pulp-paperworld magazine issue 1

PULP-PAPERWORLD The Official Magazine

FEATURED ARTICLES Nautilus® SuperWhite CO2 neutral Your 100% recycled premium paper

BTG’s Total Tissue Capability Concept.

Pyroll Group Contract converting - a new option

Alec Tindal on

Optical Brightners & Paper whiteness

Picture Supplied © 2010 by Mondi

www.pulp-paperworld.com

issue 1 / May 2010

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May 2010 CONTENTS 3. Contents

12

22

5. The task light in DuraPulp

by Södra At Milan Design Week 2010, April 14-19 at Superstudio Piú, Swedish lighting company Wästberg launched a lighting fixture made in DuraPulp

23. BTG at PulPaper 2010 To see how BTG can raise your productivity!

7. BTG- TTC Total Tissue Capability Driving cost saving through process improvement

25. DHL RAILeurope Keeping your business on the right track

12. NASH vacuum pumps for the PM 7 in Dunaujvaros Gardner Denver Nash Germany supplied the complete vacuum system for dewatering in the forming and press sections

27. The Mutag BioChip™, the carrier for biological sewage water treatment Multi Umwelttechnologie AG has over 15 years experience with culture media for immobilising micro-organisms during the treatment of sewage water

14. Pyroll Group/Contract converting - a new option Paper and paperboard manufacturers worldwide are constantly developing their businesses by making them more cost-efficient and customer-oriented

31

22. New Metso Technology Center opens in Shanghai The official inauguration of the Metso Technology Center will take place on May 28, 2010

16. Optical Brighteners by Alec Tindal Optical Brighteners have been used industrially for over 50 years. When used in paper, they are almost always based on diamino stilbene structures.

17. Imery’s on pigment effects on coating strength Coating strength is a critical property of printing papers if they are to survive the demands of modern printing processes.

31. Mondi balances product emissions by introducing Nautilus® SuperWhite CO2 Neutral paper Nautilus® SuperWhite CO2 Neutral is a 100% recycled paper that provides customers with the option to offset the CO2 emissions produced in the manufacturing process.

33. Scanjet Systems our concept – responsible tank cleaning 38. CEPI on Food contact: Selfregulation for paper industry

Willian Kenyon introduces a new tensioner to it’s range

William Kenyon has recently introduced a low cost tensioner to complement its full specification tensioner product and the company has already received its first UK order.

The new unit has been designed with rodless cylinders and a reduced frame.

It is aimed particularly at machines running at lower speeds and in positions where space is limited.

Andy Barnes, Sales Manager, commented, “Over the last few years we have identified a clear demand for a tensioning system which caters for the specific requirements of machines with severe space restrictions and/or where limited running speeds mean that the capabilities of a full specification tensioner are not needed.

The rodless design lends itself to all systems - whether single, two or three ropes - and can be installed either horizontally or vertically, with minimal changes to the support framework.

The new tensioner is being supplied through the company’s UK operation in Dukinfield, Cheshire. The full specification tensioner units will continue to be supplied from the company’s US subsidiary.

The addition of this new tensioner design means that William Kenyon has a rope threading solution to suit all positions and budgets.” email: andy@williamkenyon.co.uk

Södra Cell Värö: the world’s first to fossil-fuel-free consolidate and expand its wiping pulp mill

Ahlstrom

fabirics capacity in Italy

Ahlstrom, a global leader in the development and manufacture of high performance nonwovens and specialty papers, will consolidate its nonwoven wiping fabrics manufacturing platform in Italy, with the aim of increasing capacity, efficiency and breadth of product range.

The production of wipes will be located in two out of three existing manufacturing sites: Mozzate and Copyright © Ahlstrom Corporation Cressa, while the Carbonate plant will be closed. All the plants are located in the Milan region and belong to Home & Personal Nonwovens business area. Ahlstrom is a leading manufacturer of wiping fabrics, offering a broad range The consolidation will not have any of materials and technologies for dimajor impact on personnel or cause verse wiping applications. The comsignificant non-recurring costs. The pany manufactures wiping fabrics at company plans to complete the pro- its sites across Europe, USA and South ject by early 2011.

America

Södra Cell has now completed the investments which make its Värö mill the world’s first fossil-fuel-free pulp mill.

Södra has made extensive energy investments at Södra Cell Värö over the past few years. These investments mean that the pulp mill will now be free from fossil fuels.

Of late, we have spent SEK 600 million building: . New evaporation plant - for a more energy-efficient mill . Feed water preheating - to produce more electricity . Flue gas cooling - for more district heating . Bark drying - for optimum fuel for district heating supplies These investments have just been completed this spring and form part of an investment programme which has been ongoing since 2002, worth SEK 1.7 billion to date.

ADDING VALUE TO PAPER

PIGMENTS FOR PAPER

BENEATH EVERY SURFACE DEPTH OF KNOWLEDGE IMERYS Pigments for Paper actively works in partnership with customers to develop new and innovative solutions to solve their technical challenges.

Our Research & Development teams have a unique knowledge of mineral technology as well as an unrivalled depth of application expertise, to improve the formulations of the customer’s products and complement the natural value of the minerals we supply.

Internet: Asia Pacific

S. America N. America Europe

Tel: +32 (0) 2 655 63 40

Tel: +1 770 594 0660

Tel: +55 11 2133 0055

Tel: +65 67 99 60 60

www.imerys-paper.com

The paper task light in DuraPulp by Södra Claesson Koivisto Rune w101 by Wästberg WÄSTBERG

DuraPulp

Launched in 2008, Wästberg

DuraPulp is made from selected pulp from Södra combined with PLA (Polylactic acid, a renewable biopolymer produced from starch).

The two components in combination provide special properties that can be reinforced through hot pressing.

DuraPulp is a material with high wet strength, high water resistance, high dimensional stability as well as high tensile strength and bending stiffness.

DuraPulp is made from 100 per cent renewable fibres and is fully biodegradable.

lamps are now sold globally and have been honoured with more than 20 awards for design excellence, including 6 Good Design Awards, 4 red dot awards, Design Award of the Federal Republic of Germany and an Elle Interior Design Prize. Wästberg is based in Helsingborg, Skåne, the southernmost part of Sweden.

SÖDRA

Södra is a Swedish group

At Milan Design Week 2010, April 14-19

“Combining old wisdom with ground-

with broad forestry opera-

at Superstudio Piú, Swedish light-

breaking technology is elementary to

tions and is a leading pro-

ing company Wästberg launched a

Wästbergs philosophy” says Magnus

ducer of pulp, wood prod-

lighting fixture made in DuraPulp and

Wästberg, founder and CEO of Wästberg.

u c t s a n d b i o e n e r g y. T h e

developed in close collaboration with

“Paper has been used throughout his-

c o m p a n y, w h i c h i s o w n e d

Swedish forestry industry company

tory for making lamp shades. Now we are

by 52,000 forest owners in

Södra and Swedish architects and

using paper for the actual structure of the

southern Sweden, has 4,000

designers Claesson Koivisto Rune.

fixture adding advanced LED technology.”

Last year Claesson Koivisto Rune and

“One principal mission for Södra, together

Södra developed the Parupu children’s

with innovative partners, is to develop and

chair out of DuraPulp, thus proving it pos-

supply tomorrow’s raw materials based

sible to make a real chair of paper. Now

on renewable forest resources”, says

Internationally renowned

Claesson Koivisto Rune and Södra team

Karin Emilsson, director of technology at

architectural office founded

up with Wästberg to challenge them-

Södra and head of Södra Innovation. ”The

in 1995 by Mårten Claesson,

selves even further: merging electricity,

DuraPulp lamp by Wästberg meets high

Eero Koivisto and Ola Rune.

paper and light, using paper, not only as

customer standards of functionality and

The office has also estab-

a component or for casing, but really fully

design although it’s made out of a new

lished itself as a successful

integrated.

totally renewable material.”

employees and sales of SEK 17 billion.

CLAESSON KOIVISTO RUNE

d e s i g n s t u d i o . To d a y, t h e y work with more than 50 companies worldwide.

NASH vacuum pumps for the PM 7 in Dunaujvaros Gardner Denver Nash Germany supplied the complete vacuum system for dewatering in the forming and press sections of the new PM7 paper machine in Dunaujvaros. This technology has already proven itself in every other paper machine within the Hamburger Group, with robustness, efficiency and flexibility that guarantee the highest operational reliability.

On the new PM7 in Dunaujvaros, nine NASH 2BE3 vacuum pumps are used. Each pump is driven by a motor equipped with a frequency converter, allowing the rotational speed to be set to exactly suit the actual process conditions. This causes the vacuum pressure to adapt to process conditions as well. Additionally, three centrifugal fans for the low-vacuum scavenge points in the forming section have been included. As a result, the vacuum system provides the greatest flexibility at optimum efficiency.

For the plant operator, the advantages of a NASH liquid ring vacuum system were obvious: • An extremely robust system: overload safe and resistant to process failures • Very high overall efficiency, particularly in conjunction with optimum control • Optimum felt dewatering through the volumetric operating principle of the liquid ring vacuum pump - the

scavenge pressure adjusts automatically to suit the felt permeability • Scavenge-side liquid carry-over with low fiber content is not a problem for the NASH pumps • Rotation speed control offers the potential of high energy savings • Low specific power requirements • Low noise emissions due to low peripheral speeds of the vacuum pump • Future system adaptation, without influencing other scavenge points, is easily done by changing the rotation speed of individual vacuum pumps • High operational safety, even if individual vacuum pumps are deactivated • Very low service and maintenance costs • Confidence in more than 100 years of know-how accumulated by the market leader in the paper industry With the decision to use NASH vacuum pumps, the plant operator also made a decision for an innovative, environmentally friendly and economical attractive solution.

About the Company: Gardner Denver Nash is the Nash Division of Gardner Denver, Inc. Originating from nash_elmo Industries, the company is the world’s leading manufacturer of liquid ring vacuum pumps, compressors and engineered systems. For more than 100 years, Gardner Denver Nash has engineered and produced liquid ring pumps and vacuum and compressor systems for the most demanding applications in a variety of fields and industries.

Caption: NASH 2BE3 vacuum pumps with separator, motor and gearbox on the PM 7 in Dunaujvaros

Contact: Nash – Zweigniederlassung der Gardner Denver Deutschland GmbH Marketing Wolfgang Kraft Phone: +49 (0)911 / 1454-7771 Fax: +49 (0)911 / 1454-7777 wolfgang.kraft@gardnerdenver.com

Pyroll Group/Contract converting Paper and paperboard

manufacturers worldwide are constantly developing their businesses by making them more cost-efficient and customer-oriented. One way to achieve this is to use a reliable partner for converting, storage and logistics.

- a new option

By relying on a professional and experienced contract converter for converting such as tailored sheeting, rewinding and ream wrapping of paper and board, the manufacturers can focus on their core business, free capital and save time and money.

If the manufacturers´ own resources are insufficient, the contract converter can offer extra capacity when needed. converting units amounts to 250,000 tonnes of paper and paperboard. Sheeting is the most important sector. Practically all sheet and reel sizes can be processed. Four of the Pyroll converting units are in Finland and one is in Poland.

Pyroll is the largest privatelyowned contract converter in Europe and the market leader in finishing treatment services to the paper and paperboard industries. It acts as a flexible link between manufacturers and their clients.

Together with its partners, Pyroll also offers comprehensive packaging and logistics services. The annual capacity of Pyroll´s five

units operate state-of-the-art facilities and machinery.

Pyroll is open-minded to developing new service concepts. The company also has the capacity to launch new converting facilities in the future, either as integrated in-house units in the clients´ premises or on as a cooperating partner.

Pyroll also offers its expertise as a planning and building consultant for companies considering a sheeting unit investment of their own.

a comprehensive service from paper and paperboard converting to storage and transports to customers and end users all over Europe.

Pyroll can also process material flows coming outside of The two other business Europe. lines of Pyroll are Packages and Paper Merchant.

The Strykow unit in Central Pyroll´s sites in Finland are Pyroll manufactures a wide Poland has a prime logistic located on excellent transport range of consumer packages location with excellent road from paper, paperboard and and railway connections in plastic. As a paper merchant, all directions - it is situated Pyroll is a member of the at the intersection of the two Igepa Group, an international major highways in Poland. organization of leading paper merchants.

An east-west motorway, part of the Trans-European Additional information: Corridor, is under construcTero Karstikko connections -highways, railtion and will connect some Marketing Manager of Germany´s key industrial ways and two major export Pyroll Group/Contract concities through Poland all the ports. They also offer an efverting ficient gateway to the Rusway up to Moscow.

Tel. +358 40 8449814 sian market and of course to tero.karstikko@pyroll.com the Nordic countries. All the Pyroll can offer its clients

Optical Brighteners by

Alec Tindal Managing Director of Makowhiteness Ltd. Chemical Background

Optical Brighteners have been used industrially for over 50 years. When used in paper, they are almost always based on diamino stilbene structures. The main building blocks of the chemical structure are always the same but the functional end groups that give the Optical Brightener its specific application characteristics are controlled by the substitution of different amines.

There are two sulphonic acid groups within the main body of the chemical structure therefore every stilbene Optical Brightener has some water solubility.

The linear/planar shape of the molecule allows it to attach very well to cellulose and starch, and other polymers that contain –OH groups.

Optical Brighteners usually have little or no affinity for fillers, pigments, latex etc.

By using amines with sulphonic acid groups attached, the solubility of the Optical Brightener can be increased.

The shape of the molecule can also be changed slighted by different amines, so that the performance is affected in different application conditions.

Application

In the wet-end of the paper making process tetra sulphonated (4 sulpho groups) or di sulphonated (2 sulpho groups) products are used.

In the size-press tetra sulphonated, modified tetra sulphonated (4 sulpho groups, but with a modified structure to improve solubility) and hexa sulphonated (6 sulpho groups) are required because the solubility must be higher. In the coating any type can be used but the performance depends on the coating recipe, in particular the additives that contain –OH groups such as Starch, PVOH, CMC etc.There have been many developments in Optical Brighteners over the years and a review of the patents is recommended for anyone with an interest in the chemistry involved. There are many different structures available commercially.

Formulation

Most Optical Brighteners for paper are sold as liquids, the formulation of the liquid is often important to the papermaker as many tonnes are used over the course of the year. During the Optical Brightener manufacturing process, salt is formed (NaCl) which destabilises the liquid in some cases.

This salt needs to be removed by reverse osmosis or else stabilising compounds need to be added such as urea. There are a large number of products available with special formulations to solve certain applications and environmental issues.

Current Issues

Most of the major issues affecting Optical Brighteners over the last 2 to 3 years have revolved around supplies of the major raw material Diamino Stilbene. The industry consumes huge volumes of raw materials and supply difficulties have a knock on effect on Optical Brightener prices. Diamino Stilbene is made from para Nitro Toluene (PNT).

This stage of the reaction is considered to be quite hazardous, therefore the manufacture of PNT is only carried out by a very few companies globally. There have been interruptions in the supply of Diamino Stilbene during the Beijing Olympic period and in supplies of PNT during 2010, often due to company closures because of environmental conditions.

IMERYS TECHNICAL GUIDE

IMERYS TECHNICAL GUIDE

The build up of deposits on printing blankets (ink piling) can have a significant effect on press runnability. While coating strength is an important factor affecting piling, there have been reports that pigment type also affects piling tendency, with GCC-based coatings more likely to cause a problem than those based on kaolin. While this is unsubstantiated for multi-layer coating, recent work has clearly shown that in single coating, kaolin type and level in the recipe can affect piling. Piling results from systematic pilot and full scale printing studies are shown below. Studies were based on typical European LWC recipes and are described in more detail in the Imerys ”LWC Formulation Guide”.

Figure 9: Ink Piling effects with LWC coatings.

Highest Piling

C

9000 Large Plate Diameter

7000

B

6000

Figure 10: Mean geometrical bending stiffness of C2S woodfree papers.

A

A 5000

Low Kaolin 4000 50

There have been a number of published studies assessing how different pigment systems affect stiffness. The results have shown that kaolins give higher elastic modulus leading to greater stiffness than GCCs in coating applications. Kaolin aspect ratio and the level of kaolin in the recipe is also important in determining the overall stiffness. Higher amounts of high aspect ratio kaolins give the greatest stiffness.

The aspect ratio effects are shown below. Data were taken from a woodfree pilot coater trial where 50:50 kaolin/GCC blends with differing aspect ratio kaolins were compared with a 100% GCC recipe. A 16% increase in bending stiffness over GCC was observed with coatings containing 50% of the highest aspect ratio kaolin.

10000

60

Stiffness is another important strength factor, not only for the feel of the paper, but also for press runnability, especially in sheet fed offset applications. Low stiffness also often limits the lower basis weight for a paper.

C Small Plate Diameter

8000

Pigment Effects on Stiffness

40

30

20

10

Kaolin Level in Recipe %

The results of the study showed clear differences between the LWC formulations, with the key differentiators being the kaolin level and kaolin type in the recipe. In general it was evident that kaolins with larger plate diameters gave lower ink piling than ultrafine kaolin and that piling also reduced with increased kaolin in the recipe. Moreover, it was clear that the differences were significant, with the extent of the build up doubling between the best and the worst recipes. Subsequent studies have indicated that

Mean bending resistence, coated and calendered paper, 50% clay, mN

Top Blanket Scans 600dpi/pixels

12000 11000

PIGMENT EFFECTS ON COATING STRENGTH

the effects were related primarily to differences in ink tack build and intrinsic coating strength between the recipes.

Pigment Effects on Ink Piling

66.0 65.0 64.0 63.0 62.0 61.0 60.0 59.0 58.0 57.0 56.0 55.0 54.0

Contour Xtreme

Strength Properties of Paper Coatings Coating strength is a critical property of printing papers if they are to survive the demands of modern printing processes.

Offset lithography in particular is one of the most demanding processes in terms of the requirements of the paper substrate.

High speeds and up to 8 consecutive ink and fountain application are common and on perfecting sheet-fed presses (printing both sides simultaneously), there may be up to 12 passes, before the paper can relax. In order to survive this process, the coating must have sufficient strength to avoid picking in the presence of high tack inks and aqueous fountain solutions Good dimensional stability is also needed to ensure print stays in register and for sheet fed grades to avoid paper jams, which can result in lost productivity and waste.

However, printing is not the only process demanding paper strength. Further examples include calendering where dusting can occur if the coating is under bound and in packaging grades, coating crack during folding can be a major issue.

E100

Factors Influencing Printing Strength

Capim DG # 2 clay

Binder Demand

GCC 0

10

20

30

40

50

60

Kaolin shape factor

Pigment Size, Shape & Surface Area

Binder Properties Tg, COOH, Chemistry Particle Size

Coating Pore Structure

Summary The strength of coated papers has always been a topic of considerable interest because of the cost implications involved in binding coatings. In this guide we have highlighted the important pigment factors which control the strength characteristics of coatings.

Ink Setting Tack Build = Applied Stress

Coating Strength (Pick Resistance)

Mineral/Latex Adhesion

Pigment type will affect coating strength in a number of ways: Fine pigments with high surface area have a high binder demand and give a fast tack build, putting more stress on the paper surface during ink application, Narrow p.s.d. pigments give very porous structures which are weak and lose more binder into the basepaper, The role of shape is much more complex, but in general higher shape kaolin gives : - Better binder retention (+) - Slower ink setting and lower stress during ink application (+) - Better coverage, which can also help reduce fibre pick (=/+) - Better in-plane strength, and increased modulus, leading to higher stiffness (+) - Slightly weaker z-directional strength (-) - Increased likelihood of fount retention in coating layer (-)

Fount solution Ink oils

For a given binder type, binder demand is dictated by a combination of the physical and chemical properties of the pigment system together with the coating structure generated. These aspects are discussed further in the following sections.

PCC

In practice most coatings today are based on carbonate with kaolin used at low levels. In this situation the benefits associated with high shape kaolins outweigh the drawbacks. Imerys has a wide portfolio of coating pigments which can be used in combination to optimise binder level, and the application knowledge to help customers use them to best advantage.

Europe

N. America

Email

Tel: +44 1726 818000

Tel: +1 770 594 0660

technicalguide@imerys.com

Asia Pacific

S. America

©IMERYS - May 2010

Tel: +65 67 99 60 60

Tel: +55 11 2133 0055

There are a large number of interdependent factors which determine if a coating will give coating pick. This is summarised in the diagram opposite.

Pigment related factors are coded orange, binder blue, and press factors green. The key factor is the “binder demand” of the pigment system. This is best defined as the amount of binder needed to give acceptable runnability on the press.

GCC

KAOLIN

IMERYS TECHNICAL GUIDE

Particle shape also influences ink setting, with high aspect ratio kaolin particles reducing the number of pores at the surface and slowing down the ink setting rate. This is readily seen from SEM pictures of coating surfaces below.

Higher Surface Porosity

Narrow GCC PCC

60 40 20

Broad GCC PCC

0

9

10

11

12

13

6

8

10

12

14

16

18

Figure 2: Tensile strength of coating layers measured in the xy and z directions

Tensile strength M Pa

6.00

Blends of ultrafine GCC with ultrafine platy kaolin, 5 pph latex

5.00 4.00 3.00

40

50

60

93/9 94/17 95/25 94/18 93/23

The penetration and retention of fount solution and ink oils into the coating layer is also important in controlling strength during offset printing. Recent work has shown that water and mineral oil have a pronounced, but transient, weakening effect on coating strength. When these fluids are present in the coating layer, strength is reduced, but once they either pass into the bulk of the paper, become emulsified in the ink or evaporate, the strength is regained. Our studies in this area have indicated that the decrease in strength is a function of the fluid polarity, with more polar liquids such as linseed oil and water, giving a greater decrease in strength. This is shown in Figure 6. Our research suggests that the mechanism is linked to the ability of polar fluids to weaken the ionic bonding between the pigment particles and the latex binder causing failure.

For coatings the key factor is the ability of coating to trap fount solution during the timescales relevant to the printing process. This in turn will be related to the coating structure (porosity) and hence pigment properties. The effect of coating structure has been explored by comparing coatings made with 100% GCC and 100% coarse platey kaolin using CsCl labelled fount solution and SIMS analysis to image the location of the Cs+ (Figure 7).

+ Platey Fines

+ Blocky Fines

0

30

60

90

120

150

180

210

Time after Printing (Seconds)

Figure 6: Influence of fluids on the tensile strength of latexbound kaolin coatings. Polar fluids have the greatest weakening effect.

7.0

Another example is shown below in woodfree studies based on fast setting 80:20 PCC/kaolin coatings. Here the influence of kaolin to control ink rate in a porous coating was measured against the ability of increasing binder level to close the surface. The results were surprising in that changing only 20 parts of the pigment recipe to a high aspect ratio kaolin had much the same impact on ink tack development as increasing binder by 2-4 parts (or 2244%).

The results of these experiments clearly show that at longer time scales, coatings containing high shape pigments are more likely to retain fount solution than coatings containing low shape pigments where the fount although rapidly absorbed, passes quickly to the basepaper. The suggestion is that higher shape pigments may increase the likelihood of fount weakening. However, it must be remembered that coatings based on high shape pigments also tend to have lower surface porosity. On the short timescales relevant to the printing process it is possible that with these coatings much of the fount solution may not penetrate the coating and instead end up being emulsified in the ink.

In contrast unsaturated oils such as linseed oils dry by oxidation and hence remain in the coating layer permanently. Figure 8 shows the change in tensile strength over 3 months for kaolin coatings saturated with linseed and mineral oils. The linseed oil saturated coating is permanently weakened, whilst the mineral oil evaporates allowing the coating to regain its strength.

Figure 8: Linseed oil remains in the coating after printing and causes permanent weakening 6 Linseed oil Mineral oil 5

4

3

2

Kaolin UFP, 60 s immersion time 1

6.0 5.0

0

original Mineral oil

4.0

Unwetted

Water redried

3.0

Wetted

Redried

2.0 Wood oil

1.0

Linseed oil

Water/IPA Water

In-plane 2.00

70

Influence of Coating Structure on the Weakening Effects of Printing Fluids

2µm/¼ µm

Particle shape is also very important when considering the mechanical properties and binder requirements of coatings. High aspect ratio particles, such as kaolin, give coatings which have different strength properties depending on the direction the stress is applied. Figure 2 shows this for a series of kaolin/ GCC blends. GCC coatings have similar strength in all directions. As the proportion of kaolin is increased, the strength in the in-plane (xy) and z-direction diverge, with the xy-direction strength increasing. This increase in xy strength is accompanied by an increase in modulus which can be an advantage in resisting cracking during folding.

30

GCC Slower Ink Setting

Figure 4: High shape factor particles slow down ink setting and can reduce ink tack build with time

Particle Shape Effects and Coating Strength

20

Time after Printing (s)

20

Surface area, m2 g-1

Binder level pph

10

PCC

Separation Force -->

8

Kaolin

3

0

0 7

4

Tensile strength MPa

Dry Pick Velocity, cm s-1

Broad GCC

80

PCC/Platey Clay

5

1

More information on this can be found in the companion Imerys Technical Guide, “Coatings for Offset Lithography”. However, an illustration of the power of shape for controlling ink tack development is shown in Figure 4. In this study, fine platey and fine low shape kaolin particles were added in corresponding amounts to a base kaolin. In the case of the low shape particles, the rate of tack development increased, while addition of platey fines slowed ink tack development down, thus reducing the stress during printing.

9.5pph latex

Stronger

PCC/Fine Clay +4 Parts SA Latex

2

GCC

Figure 1: Pigment type and surface area effects on strength (PCC and GCC)

100

PCC/Fine Clay +2 Parts SA Latex

6

Tack Force (N)

The binder demand of a pigment is commonly linked to its surface area, with fine, high surface area pigments generally requiring higher binder levels to give the same coating strength as coarser, low surface area pigments. This is shown for a series of GCC and PCC pigments in Figure 1. This, however, is a simplification, since it is evident that pigment designs with narrow particle size distributions, such as PCC, are inherently weaker than their broad p.s.d. counterparts, even if the surface area is the same. Narrow p.s.d. pigment designs lose more binder into the basesheet during coating application, and also generate coatings with a high pore volume which are inherently weaker (Figure 1). Typically we would expect a narrow particle size GCC or PCC to require 20% or more binder than a similarly sized broad particle size pigment.

120

PCC/Fine Clay

7

Figure 3: SEM images of coating surfaces Platy Kaolin

Figure 7: SIMS analysis of Cs+ labelled fount

8

Tensile strength, MPa

Pigment Particle Size Effects and Coating Strength

Figure 5: Pigment and binder effects on ink tack development

0.0 4

1.00

z-direction

6

8

10

12

14

16

18

20

pph latex

0.00 100

80

60

40

20

0

% GCC

PIGMENTS FOR PAPER

PIGMENTS FOR PAPER

IMERYS TECHNICAL GUIDE

Particle shape also influences ink setting, with high aspect ratio kaolin particles reducing the number of pores at the surface and slowing down the ink setting rate. This is readily seen from SEM pictures of coating surfaces below.

Higher Surface Porosity

Narrow GCC PCC

60 40 20

Broad GCC PCC

0

9

10

11

12

13

6

8

10

12

14

16

18

Figure 2: Tensile strength of coating layers measured in the xy and z directions

Tensile strength M Pa

6.00

Blends of ultrafine GCC with ultrafine platy kaolin, 5 pph latex

5.00 4.00 3.00

40

50

60

93/9 94/17 95/25 94/18 93/23

The penetration and retention of fount solution and ink oils into the coating layer is also important in controlling strength during offset printing. Recent work has shown that water and mineral oil have a pronounced, but transient, weakening effect on coating strength. When these fluids are present in the coating layer, strength is reduced, but once they either pass into the bulk of the paper, become emulsified in the ink or evaporate, the strength is regained. Our studies in this area have indicated that the decrease in strength is a function of the fluid polarity, with more polar liquids such as linseed oil and water, giving a greater decrease in strength. This is shown in Figure 6. Our research suggests that the mechanism is linked to the ability of polar fluids to weaken the ionic bonding between the pigment particles and the latex binder causing failure.

For coatings the key factor is the ability of coating to trap fount solution during the timescales relevant to the printing process. This in turn will be related to the coating structure (porosity) and hence pigment properties. The effect of coating structure has been explored by comparing coatings made with 100% GCC and 100% coarse platey kaolin using CsCl labelled fount solution and SIMS analysis to image the location of the Cs+ (Figure 7).

+ Platey Fines

+ Blocky Fines

0

30

60

90

120

150

180

210

Time after Printing (Seconds)

Figure 6: Influence of fluids on the tensile strength of latexbound kaolin coatings. Polar fluids have the greatest weakening effect.

7.0

Another example is shown below in woodfree studies based on fast setting 80:20 PCC/kaolin coatings. Here the influence of kaolin to control ink rate in a porous coating was measured against the ability of increasing binder level to close the surface. The results were surprising in that changing only 20 parts of the pigment recipe to a high aspect ratio kaolin had much the same impact on ink tack development as increasing binder by 2-4 parts (or 2244%).

The results of these experiments clearly show that at longer time scales, coatings containing high shape pigments are more likely to retain fount solution than coatings containing low shape pigments where the fount although rapidly absorbed, passes quickly to the basepaper. The suggestion is that higher shape pigments may increase the likelihood of fount weakening. However, it must be remembered that coatings based on high shape pigments also tend to have lower surface porosity. On the short timescales relevant to the printing process it is possible that with these coatings much of the fount solution may not penetrate the coating and instead end up being emulsified in the ink.

In contrast unsaturated oils such as linseed oils dry by oxidation and hence remain in the coating layer permanently. Figure 8 shows the change in tensile strength over 3 months for kaolin coatings saturated with linseed and mineral oils. The linseed oil saturated coating is permanently weakened, whilst the mineral oil evaporates allowing the coating to regain its strength.

Figure 8: Linseed oil remains in the coating after printing and causes permanent weakening 6 Linseed oil Mineral oil 5

4

3

2

Kaolin UFP, 60 s immersion time 1

6.0 5.0

0

original Mineral oil

4.0

Unwetted

Water redried

3.0

Wetted

Redried

2.0 Wood oil

1.0

Linseed oil

Water/IPA Water

In-plane 2.00

70

Influence of Coating Structure on the Weakening Effects of Printing Fluids

2µm/¼ µm

Particle shape is also very important when considering the mechanical properties and binder requirements of coatings. High aspect ratio particles, such as kaolin, give coatings which have different strength properties depending on the direction the stress is applied. Figure 2 shows this for a series of kaolin/ GCC blends. GCC coatings have similar strength in all directions. As the proportion of kaolin is increased, the strength in the in-plane (xy) and z-direction diverge, with the xy-direction strength increasing. This increase in xy strength is accompanied by an increase in modulus which can be an advantage in resisting cracking during folding.

30

GCC Slower Ink Setting

Figure 4: High shape factor particles slow down ink setting and can reduce ink tack build with time

Particle Shape Effects and Coating Strength

20

Time after Printing (s)

20

Surface area, m2 g-1

Binder level pph

10

PCC

Separation Force -->

8

Kaolin

3

0

0 7

4

Tensile strength MPa

Dry Pick Velocity, cm s-1

Broad GCC

80

PCC/Platey Clay

5

1

More information on this can be found in the companion Imerys Technical Guide, “Coatings for Offset Lithography”. However, an illustration of the power of shape for controlling ink tack development is shown in Figure 4. In this study, fine platey and fine low shape kaolin particles were added in corresponding amounts to a base kaolin. In the case of the low shape particles, the rate of tack development increased, while addition of platey fines slowed ink tack development down, thus reducing the stress during printing.

9.5pph latex

Stronger

PCC/Fine Clay +4 Parts SA Latex

2

GCC

Figure 1: Pigment type and surface area effects on strength (PCC and GCC)

100

PCC/Fine Clay +2 Parts SA Latex

6

Tack Force (N)

The binder demand of a pigment is commonly linked to its surface area, with fine, high surface area pigments generally requiring higher binder levels to give the same coating strength as coarser, low surface area pigments. This is shown for a series of GCC and PCC pigments in Figure 1. This, however, is a simplification, since it is evident that pigment designs with narrow particle size distributions, such as PCC, are inherently weaker than their broad p.s.d. counterparts, even if the surface area is the same. Narrow p.s.d. pigment designs lose more binder into the basesheet during coating application, and also generate coatings with a high pore volume which are inherently weaker (Figure 1). Typically we would expect a narrow particle size GCC or PCC to require 20% or more binder than a similarly sized broad particle size pigment.

120

PCC/Fine Clay

7

Figure 3: SEM images of coating surfaces Platy Kaolin

Figure 7: SIMS analysis of Cs+ labelled fount

8

Tensile strength, MPa

Pigment Particle Size Effects and Coating Strength

Figure 5: Pigment and binder effects on ink tack development

0.0 4

1.00

z-direction

6

8

10

12

14

16

18

20

pph latex

0.00 100

80

60

40

20

0

% GCC

PIGMENTS FOR PAPER

PIGMENTS FOR PAPER

IMERYS TECHNICAL GUIDE

IMERYS TECHNICAL GUIDE

The build up of deposits on printing blankets (ink piling) can have a significant effect on press runnability. While coating strength is an important factor affecting piling, there have been reports that pigment type also affects piling tendency, with GCC-based coatings more likely to cause a problem than those based on kaolin. While this is unsubstantiated for multi-layer coating, recent work has clearly shown that in single coating, kaolin type and level in the recipe can affect piling. Piling results from systematic pilot and full scale printing studies are shown below. Studies were based on typical European LWC recipes and are described in more detail in the Imerys ”LWC Formulation Guide”.

Figure 9: Ink Piling effects with LWC coatings.

Highest Piling

C

9000 Large Plate Diameter

7000

B

6000

Figure 10: Mean geometrical bending stiffness of C2S woodfree papers.

A

A 5000

Low Kaolin 4000 50

There have been a number of published studies assessing how different pigment systems affect stiffness. The results have shown that kaolins give higher elastic modulus leading to greater stiffness than GCCs in coating applications. Kaolin aspect ratio and the level of kaolin in the recipe is also important in determining the overall stiffness. Higher amounts of high aspect ratio kaolins give the greatest stiffness.

The aspect ratio effects are shown below. Data were taken from a woodfree pilot coater trial where 50:50 kaolin/GCC blends with differing aspect ratio kaolins were compared with a 100% GCC recipe. A 16% increase in bending stiffness over GCC was observed with coatings containing 50% of the highest aspect ratio kaolin.

10000

60

Stiffness is another important strength factor, not only for the feel of the paper, but also for press runnability, especially in sheet fed offset applications. Low stiffness also often limits the lower basis weight for a paper.

C Small Plate Diameter

8000

Pigment Effects on Stiffness

40

30

20

10

Kaolin Level in Recipe %

The results of the study showed clear differences between the LWC formulations, with the key differentiators being the kaolin level and kaolin type in the recipe. In general it was evident that kaolins with larger plate diameters gave lower ink piling than ultrafine kaolin and that piling also reduced with increased kaolin in the recipe. Moreover, it was clear that the differences were significant, with the extent of the build up doubling between the best and the worst recipes. Subsequent studies have indicated that

Mean bending resistence, coated and calendered paper, 50% clay, mN

Top Blanket Scans 600dpi/pixels

12000 11000

PIGMENT EFFECTS ON COATING STRENGTH

the effects were related primarily to differences in ink tack build and intrinsic coating strength between the recipes.

Pigment Effects on Ink Piling

66.0 65.0 64.0 63.0 62.0 61.0 60.0 59.0 58.0 57.0 56.0 55.0 54.0

Contour Xtreme

Strength Properties of Paper Coatings Coating strength is a critical property of printing papers if they are to survive the demands of modern printing processes.

Offset lithography in particular is one of the most demanding processes in terms of the requirements of the paper substrate.

High speeds and up to 8 consecutive ink and fountain application are common and on perfecting sheet-fed presses (printing both sides simultaneously), there may be up to 12 passes, before the paper can relax. In order to survive this process, the coating must have sufficient strength to avoid picking in the presence of high tack inks and aqueous fountain solutions Good dimensional stability is also needed to ensure print stays in register and for sheet fed grades to avoid paper jams, which can result in lost productivity and waste.

However, printing is not the only process demanding paper strength. Further examples include calendering where dusting can occur if the coating is under bound and in packaging grades, coating crack during folding can be a major issue.

E100

Factors Influencing Printing Strength

Capim DG # 2 clay

Binder Demand

GCC 0

10

20

30

40

50

60

Kaolin shape factor

Pigment Size, Shape & Surface Area

Binder Properties Tg, COOH, Chemistry Particle Size

Coating Pore Structure

Summary The strength of coated papers has always been a topic of considerable interest because of the cost implications involved in binding coatings. In this guide we have highlighted the important pigment factors which control the strength characteristics of coatings.

Ink Setting Tack Build = Applied Stress

Coating Strength (Pick Resistance)

Mineral/Latex Adhesion

Pigment type will affect coating strength in a number of ways: Fine pigments with high surface area have a high binder demand and give a fast tack build, putting more stress on the paper surface during ink application, Narrow p.s.d. pigments give very porous structures which are weak and lose more binder into the basepaper, The role of shape is much more complex, but in general higher shape kaolin gives : - Better binder retention (+) - Slower ink setting and lower stress during ink application (+) - Better coverage, which can also help reduce fibre pick (=/+) - Better in-plane strength, and increased modulus, leading to higher stiffness (+) - Slightly weaker z-directional strength (-) - Increased likelihood of fount retention in coating layer (-)

Fount solution Ink oils

For a given binder type, binder demand is dictated by a combination of the physical and chemical properties of the pigment system together with the coating structure generated. These aspects are discussed further in the following sections.

PCC

In practice most coatings today are based on carbonate with kaolin used at low levels. In this situation the benefits associated with high shape kaolins outweigh the drawbacks. Imerys has a wide portfolio of coating pigments which can be used in combination to optimise binder level, and the application knowledge to help customers use them to best advantage.

Europe

N. America

Email

Tel: +44 1726 818000

Tel: +1 770 594 0660

technicalguide@imerys.com

Asia Pacific

S. America

©IMERYS - May 2010

Tel: +65 67 99 60 60

Tel: +55 11 2133 0055

There are a large number of interdependent factors which determine if a coating will give coating pick. This is summarised in the diagram opposite.

Pigment related factors are coded orange, binder blue, and press factors green. The key factor is the “binder demand” of the pigment system. This is best defined as the amount of binder needed to give acceptable runnability on the press.

GCC

KAOLIN

New Metso Technology Center opens in Shanghai The official inauguration of the Metso Technology Center will take place on May 28, 2010 in Shanghai. The opening of the center brings facilities for the world’s newest and most modern valve factory and supply center as well as facilities for the production, assembly and testing of process automation systems.

In addition to the office premises, the center also comprises premises for Automation business line’s sales, project and engineering units in China. All of Automation business line’s units in the Shanghai area will be operating at the new center.

The Metso Technology Center, located in the Shanghai Waigaoqiao Free Trade Zone, comprises 20,000 square meters of floor space for manufacturing and 9,500 square meters of office area. Initially, the center will employ about 250 people. Later, in 2013, the number of employees forming a functional entity is estimated to increase to 650. Metso’s applications, solutions and knowledge-based services are designed to improve customers’ process performance and profitability by increasing productivity, quality, process availability and environmental friendliness.

With a strong presence in China, Metso can provide better service to energy, oil and gas, and pulp and paper customers, especially in China and Asia Pacific. It also enables the development of a global supply chain for valve production.

One of the most notable transactions over the course of some years has been the delivery of more than 3,000 rotary control valves and 1,000 automated valves and 3,500 intelligent valve controllers to one of the world’s largest ethylene project in China.

Metso is also the leading supplier of automation

solutions to the pulp and paper industry in the Chinese markets. Metso is a clear industry leader in flow control devices for the pulp and paper industry, with a 60% share of the markets served. Metso has supplied over 100 control systems to the power industry and well over 100 control systems to the pulp and paper industry.

Metso made its first deliveries to China back in the 1950s. It started its own operations in China through a joint venture in the 1980s. Today, Metso operates in 16 different localities in China, where it has about 2,600 employees.

Metso is a global supplier of sustainable technology and services for mining, construction, power generation, automation, recycling and the pulp and paper industries. We have about 27,000 employees in more than 50 countries. www.metso.com/automation Metso Automation Esa Lumme, Director Shanghai Plant, Metso’s Automation business line Tel: +86 1391 865 8049 E-mail: esa.lumme@metso.com http://www.metso.com/automation

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The Mutag BioChip™, the carrier for biological sewage water treatment Stefan Christof Bidinger, Bernd Dzedzig, Dr.-Ing. Markus Geiger, Bernd Rauch (Multi Umwelttechnologie AG, Aue) Multi Umwelttechnologie AG has over 15 years experience with culture media for immobilising micro-organisms during the treatment of sewage water. During this time, we have used almost every known carrier in many different large plants, types of sewage water and areas of application. The knowledge that we have gained as a result, along with the comprehensive data material, enables us to make a well-founded assessment of the specific performance data of the in some cases extremely different carriers. Since Multi Umwelttechnologie AG was at no time linked to a particular supplier, we were able - on the basis of the operational experience gained - to undertake targeted optimisation either of the carrier itself or the process conditions. The emphasis here was on minimising operational problems arising from the weaknesses of "conventional" culture media that these days cannot be overlooked. The thorough implementation of our requirements for an optimum carrier led to one result: the Mutag BioChip™. From our point of view, this is currently the "best available carrier" specifically for purifying types of sewage water that are difficult to treat.

1. How the Mutag BioChip™ works The special way in which the Mutag BioChip™ works, together with its efficiency, are readily explained in relation to the characteristic fluid bed process conditions. A prerequisite for the biological transformation of sewage water contents in the fluid bed is the immobilisation of the micro-organisms on the surface of the carrier. The effectiveness of the biological transformation is determined here by the carrier's "active" surface. This requires the following demands to be placed on the carrier: Firstly, there must be sufficient protected surface to enable the microorganisms to survive and multiply in these areas, and secondly it is necessary to realise maximum mass transfer (substrate, oxygen, metabolic products) between the microorganisms and the sewage water. At first glance it would appear that fulfilling both these requirements simultaneously is contradictory it process terms, but this can be refuted below:

Figure 1: Colonised Mutag BioChip™s

First, the error of maximising the volumetric surface (in m²/m³ carriers). It is of course possible to produce extremely porous carriers, but it is also a fact that these pores must be accessible to the micro-organisms as a potential colonisation surface. It is easy to see that this is scarcely possible for cavities inside a carrier. If, as is commonly the case, the transformation efficiency is correlated against the porosity, this represents a fatal distortion of the actual conditions.

This is different in the case of the Mutag Biochip™: Here, a relatively thin and largely open carrier provides an extremely large surface in which the micro-organisms can form colonies in protected pores, but at the same time still remain in intensive contact with the surrounding fluid (sewage water). Consequently, the micro-organisms can be optimally supplied with nutrients and the metabolic products are efficiently transported away, which at least partially explains the effectiveness and high degradation efficiency of the Mutag BioChip™. Expressed in figures: the active surface of the Mutag BioChip™ is more than 3,000 m²/m³ (Figures 1 and 2).

Figure 2: Pore system of the Mutag BioChip™ (cross section) Next point: Limitation of the biological transformation by the "thick" biofilms due to siltation and "non-biological" impurities. Even if a high microbial population density can become established on a carrier, if the structure and / or geometry of the carrier is unsuitable, the mass transfer into the "deeper" layers of the biofilm is reduced. Consequently, the degradation efficiency of the immobilised biological system is continually reduced over the operating time.

Figures 3 and 5 illustrate how this can appear for various carriers and carrier geometries. The consequences of a carrier blockage are not hard to imagine. However, the countermeasure is very simple. The special geometry of the Mutag BioChip™ enables the hydraulic shear forces acting on the surface to be intensified and a self-cleaning process to be initiated, which constantly renews the carrier's active surface. This effectively prevents limitation of the biological efficiency due to mass transfer resistances.

Problems with the distribution and mixing-in of the carrier are prevented by the parabolic shape. In order to optimise the mass transfer (as already addressed a number of times), the Mutag BioChip™ was shaped like a parabolic disc.

Although this has an uncontrollable motion profile from a flow mechanics point of view, this has proven to be extremely positive in this case. In addition to the increased level of turbulence, which has the direct effect of increasing the mass transfer, the mobility of the individual carrier in the cluster is effectively increased. This results in a homogeneous distribution of the carrier within the entire reaction space, thus enabling the formation of "dead zones" to be effectively reduced.

2. Operational results

Figure 3: Blocked carrier (paper sewage water)

Figure 4: Mutag BioChip™s in parallel operation

Figure 5: Mutag BioChip™s and conventional carriers in parallel operation (result)

Of course, theoretical observations require verification of the forecast advantages within a confidence-building time frame. So far, we are able to fall back on three years worth of operational experience with the Mutag BioChip™, during which time it was in some cases possible to operate systems in parallel in order to compare Mutag BioChip™s vs. "conventional carriers". Unfortunately, not all operational results can be listed at this point, as this would understandably exceed the scope of this article. However, on the basis of the selected case examples, it is possible to meaningfully document the efficiency of the Mutag BioChip™. We consider it important to point out that the results listed here are of a fundamental nature, which enables them to be applied to other types of sewage water and applications.

In relation to the direct performance comparison, the extension of a high-load stage provided valuable results for treating the sewage water of a paper mill. In this case, the central task is to increase the system capacity from 25,000 kg COD/d to 50,000 kg COD/d, and at the same time to maintain paper production throughout the construction work. For this reason, the following procedure was chosen: Initially, the existing high-load reactor filled with conventional carrier continued in operation, with a second similar tank being set up in parallel. Following completion of the mechanical equipment (Figures 6 and 7), around 7% of the old reactor's carrier volume was put into the new highload reactor in the form of Mutag BioChip™s for the purpose of initial orientation, after which the same volume of sewage water was fed to both high-load stages. On the basis of the positive findings here, the BioChip volume was increased in a second step to 11 vol. % of the carrier that is otherwise required. Figure 8 shows the results that were then obtained. As is clearly apparent, the Mutag BioChip™ reactor then attained the same degradation efficiency as the old reactor, which meant that it was not necessary to increase the BioChip volume further. The almost tenfold increase in the degradation efficiency of the MutagBioChip™ in direct comparison with the conventional carrier was clearly and impressively proven.

Based on these findings and the stable operating results of the new Mutag BioChip™ high-load stage, the old reactor

was put out of operation and converted. Both stages are now equipped with the Mutag BioChip™ technology, and reliably deliver the required effluent values. With regard to the scale of the entire procedure, it is worth mentioning for the sake of completeness that in future, at least 1,000 m³/h of sewage water will be treated here, and that a performance increase of the low-rate activated sludge biology is also definitely planned.

As a second example and further evidence of the efficiency of the Mutag BioChip™ for nitrogen elimination also, its use in the nitrification stage for treating coking plant sewage water is described here. These are regarded not only as difficult to treat - in our experience they can be cleaned only with multiple biological stages. Particular demands are placed on the transformation rates here, and this applies specifically with regard to the reactor sizes that can be installed and controlled. Such plants with Mutag BioChip™s have been in continuous operation for more than two years. The largest have a nitrification capacity of around 100,000 population equivalent (PE) and 55,000 PE. The chip's superiority is apparent here also. Degradation rates of 4-5 kg NH4-N per m³ of carrier volume are constantly attained. And this is despite the fact that the Mutag reactors are smaller by a factor of 5 than the activated sludge tanks that are otherwise required.

3. Summary and outlook

Figure 6: Mutag BioChip™ high-load aeration system

The Mutag BioChip™ has proved to be very adaptable as far as its use in a variety of media is concerned. This applies equally to the elimination of organic compounds (measured as CSB) and nitrogen compounds (e.g. ammonium).

The properties addressed here and the established operational results of the Mutag BioChip™ alone illustrate the superiority of this carrier compared with its conventional competitors. This applies equally to the associated system components (aeration, retention device), which optimally support the special advantages of the BioChip.

Figure 7: Mutag BioChip™ high-load reactor in operation

It goes without saying that as early as in the planning stages, the future-orientated provision of capacity reserves for sewage water treatment had been decided upon for the projects presented here, and the central task was for this to be achieved without structural modifications and "only" by replenishing the carrier as necessary. In terms of the process, there are limits here that in the first approximation can be reduced to the maximum possible carrier filling ratio. It is thus easy to understand that with the Mutag BioChip™ system, it is possible to achieve an almost tenfold increase in the extension reserve compared with conventional systems.

This is sure to be particularly good news for owners of existing plants: They are often faced with the problem that operational extensions are approved only if the pollutant load remains unchanged. By using the Mutag BioChip™ system, these plants can be upgraded relatively easily, quickly and economically. This is true even if they are a long way away, because the transport costs for the carrier are lower than usual by a factor of 10.

Figure 8: COD degradation reactor (old) and Mutag BioChip™ reactor

More information is available on the Internet at http://www.mutag-biochip.com

The Premier Pulp, Paper & Board Event for Asia

NEW SHOW DATES

16-18 JUNE 2010 Queen Sirikit National Convention Center Incorporating: • New Production Technology Show Exhibition of Equipment, Machinery, Chemicals, Services and Supplies for Pulp, Paper and Board Production.

• Senior Management Symposium Asia’s Top Management Meeting for the Pulp, Paper and Board Businesses.

• Paper Products and Office Supplies Fair Exhibition of the Complete Range of Office Supplies, Paper and Board Products.

• New Applied Technology Conference Presenting the Latest Technical Developments and Solutions for Pulp and Paper Production.

Pre-register today at www.asianpapershow.com Admission is strictly for trade visitors only.

Minors under age of 16 are not permitted entry to the exhibition

Organiser

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Opening Hours: 16-17 June 2010 : 1000hrs - 1800hrs 18 June 2010 : 1000hrs - 1700hrs

www.asianpapershow.com For further information, please contact: UBM Asia Trade Fairs Pte Ltd (Reg. No. 199401769K) 3 Pickering Street #02-48 China Square Central Singapore 048660 Tel: +65 6592 0890 Fax: +65 6438 6090 Email: Gwen.Ng@ubm.com Contact: Ms Gwen Ng

NautilusŽ SuperWhite CO2 Neutral is a 100% recycled paper that provides customers with the option to offset the CO2 emissions produced in the manufacturing process. In accordance with the standards established by the Confederation of European Paper Producers’ (CEPI), Mondi voluntarily calculated the product carbon footprint of NautilusŽ SuperWhite.

Since the stipulated administration of the Kyoto Protocol in 2005, emission offsetting has gained in prominence as a measure to counteract

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to develop sustainable products and maintain a transparent environmental performance.

Mondi invests in highly accredited emissionreduction programmes (e.g. wind parks and

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composting), which offset the CO2 emitted

is already one of Mondi’s most environmentally

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In reference to the recent introduction of Mondi’s

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emissions that are an unavoidable part of the

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nces product sions ng NautilusÂŽ White tral paper

Using this framework, Mondi presented a standardized, concise statement detailing the environmental impact of NautilusÂŽ SuperWhite.

All NautilusÂŽ papers bear the EU Flower

According to Uwe FÜlster, Mondi’s Group Head of Sustainable Development, the product carbon footprint calculation is a further step to assess the impact of production in terms of emissions to air. Mondi’s adherence to CEPI’s 10 toes standard for carbon footprint calculation was applied to a total of 24 products, including NautilusŽ SuperWhite. The 10 toes represent key phases in the lifecycle of paper and board.

production is less harmful than that of other comparable products. NautilusÂŽ SuperWhite

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RESPONSIBLE TANK CLEANING PULP & PAPER

OUR CONCEPT â&#x20AC;&#x201C; RESPONSIBLE TANK CLEANING As leaders in the global supply of equipment which uses water and chemicals to clean tanks across a wide variety of industries we know some of the pressures facing the manufacture of pulp and paper. The large volumes of water consumed and effluent discharged requires an optimal approach to cleaning. At Scanjet Systems we call this responsible tank cleaning. This means we donâ&#x20AC;&#x2122;t just supply you with equipment to clean your tanks to the highest standard and in the shortest time, instead we take care to find a technical solution that will use the lowest volume of water and chemicals, that will enable maximum recycling of cleaning waters and that will release the lowest volume and concentration of effluent. We know how important it is for your process to be efficient and environmentally responsible and we appreciate water is a scarce resource.

In our team we carry microbiologists, engineers and utilities specialists from the process industries who have the most experience in providing answers to your tank cleaning challenges. With offices based in the US, Europe and Asia Pacific we have additionally developed sales partners with specific pulp and paper industry expertise. Scanjet Systems is the global supplier but with locally placed partners .

Scanjet Systems holds the largest range of tank cleaning machines for pulp and paper applications. Decisions on whether to supply internal or external gearing, electric, mechanical or air driven, single or multi nozzle will depend on the specific vessel application. In all cases machine reliability is paramount to cope with the intensive environment. In this respect the Scanjet experience of supplying tens of thousands into the marine/shipping market instils confidence since this is a mobile industry which operates globally with few people on board.

SCANJET SYSTEMS BENEFITS REDUCING WATER USE REDUCING MICROBIOLOGICAL LEVELS IMPROVING RECYCLED PAPER PRODUCTION INCREASING PERSONNEL SAFETY

RELEVANT PRODUCTS SC 40RT

SC 15TW

SC 30T

The SC 40RT is a dual or four nozzle externally driven automated tank cleaning machine constructed of 316 stainless steel and other highly corrosion resistant materials. It employs a patented magnetic drive transmission thus reducing the need for costly seal replacements and potential failures when used in hazardous environments. The drive mechanism and other major components are external to the tank, resulting in easy maintenance and a high level of safety when the cleaning of hazadous products are required.

The SC 15TW is a 1.5â&#x20AC;? dual or four nozzle automated tank cleaning machine constructed of 316 stainless steel and other highly corrosion resistant materials. It has a fixed to moving gear ratio of 47 to 49 allowing it to produce a homogenous 360deg pattern that is superior to that of any other rotating jet head in itâ&#x20AC;&#x2122;s class. It is an integrated turbine class type of tank cleaning machine and employs an adjustable turbine and flow through gearbox. The adjustable turbine allows the rotation speed to be adjusted.

The SC 30T is a single nozzle mechanically programmable automated tank cleaning machine constructed of 316 stainless steel and other highly corrosion resistant materials. It allows the operator to wash the tank in a full 360deg mode or to set the nozzle angle to wash the tank within a particular section. It also employs a patented magnetic drive transmission. The drive mechanism and other major components are external to the tank, resulting in easy maintenance and a high level of safety.

TYPICAL APPLICATIONS Ethanol fermenters Crude oil storage tanks Gasoline storage tanks High density stock chest Large silos & dryers Over-the-road tankers & railcars Reactors Large Uni-Tanks

TYPICAL APPLICATIONS Road and Rail tanker cleaning Portable cleaning for contractors Fermenter tank cleaning Storage tank cleaning Wine storage tanks & fermenters Brewery storage tanks & fermenters

TYPICAL APPLICATIONS Ethanol fermenters Crude oil storage tanks Gasoline storage tanks High density stock chest Large silos & dryers Over-the-road tankers & railcars Reactors Large Uni-Tanks

www.scanjetsystems.com

Food contact: Self-regulation for paper industry The Confederation of European Paper Industries (CEPI) and the International Confederation of paper and board Converters in Europe (CITPA) have launched today the voluntary ‘Industry Guideline for the Compliance of Paper& Board Materials and Articles for Food Contact’.

The Guideline, which has been independently peer reviewed by PIRA International, offers route to compliance with EC Framework regulation 1935/2004, which covers all materials and articles which come in contact with food. It gives guidance to paper and board producers as well as institutions and public authorities in how to ensure that paper and board meets the quality standards appropriate to its intended use in food contact. This means it will not endanger human health by causing an unacceptable change in the food’s composition or deterioration in the way the food tastes, looks, feels and smells.

The health and safety implications of food contact are taken very seriously by the paper industry.

When it comes to consumer protection, the sector has cooperated at national government and EU level for many years.

Many of the materials which come into direct contact with food, such as cellulose film, plastics and ceramics, are subject to material-specific measures which apply uniformly throughout the EU. For paper, on the other hand, the picture is fragmented, with countries such as Germany, France, the Netherlands and Italy, having national legislation, while other countries simply conform with the more general, non-material specific regulation 1935/2004. The unintended impression given to buyers is that compliance for paper and board is less clear than for other materials.

So it is against this background that the European paper packaging value chain has compiled the voluntary Industry Guideline for the Compliance of Paper & Board Materials and Articles for Food Contact (the Guideline). CEPI will also publish a Good Manufacturing Practice (GMP) for the industry. Put simply, the Guideline spells out the rules, and the GMP describes a management system for those rules to be obeyed. GMP is not an optional bolt-on to the Guideline, but is required

by Regulation 2023/2006, a general GMP requirement recently published by the European Commission.

“The Guideline offers, in the absence of a specific measure, the alternative of self-regulation. There is now a period of opportunity during which the paper-based packaging chain can show that its own guidelines can deliver”, explains Jori Ringman, CEPI Recycling and Product Director.

Food Contact guidelines: www.cepi.org/publications Peer Review: http://www.cepi.org/content/default.asp?PageID=558&DocID=27381 For more information, please contact Daniela Haiduc CEPI Public Affairs and Communications Manager at d.haiduc@cepi.org or +32 2627 4915