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EXTRUSION MACHINERY

Davis-Standard to cater to larger die sizes

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o support its growing market share in blown film, extrusion machinery supplier Davis-Standard recently expanded its in-house die-machining capabilities at its plant in the US. It installed the Viper heavyweight VTL machining centre that will accommodate largediameter mandrels with four-axis capabilities. This upgrade, the company says, will allow its Centrex and Vertex co-extrusion dies to be manufactured in diameters up to 2,100 mm. The new machining centre features automatic

tool changes, allowing f o r m u l t i p le machining processes to be completed in one set-up. Parts will also be machined with improved finishes to reduce hand polishing. Davis-Standard’s die designs have been used worldwide for agricultural and packaging film applications. The threelayer Centrex die features an insulated IBC (internal bubble cooling) system with internal and external heating arrangement to help reduce melt fracture and increase rates. Meanwhile, engineered for tight gauge distribution and

Davis-Standard’s newly installed machining centre accommodates large-diameter mandrels with fouraxis capabilities

control, the Vertex features a concentric design with spiral channels fed from a

Jumbo sticks to speedy machines

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o stay ahead of the competition, Taiwanese machine maker Jumbo Steel is upgrading its product range. Its product portfolio includes machines for making straws, strapping bands, suction hoses and PVC heat shrinkable film. “We will introduce a straw making machine with a higher speed of 1,700 pieces/minute (from 1,400 pieces/minute) at the end of this year,” Manager Sandy Kuo said to PRA recently, adding that the machine is currently undergoing trials. While the straw machinery market is a competitive one, with the Taiwanese and Chinese occupying a large market share, Kuo says the d i f f e r e n c e i n J u m b o ’s machinery is in the automation. “We offer a three-in-one package that includes an in-line extruder and packing machine,

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saving labour costs. We sell around 20 such models to the US every year,” she said, adding, “Americans make these types of machines too, with double the speed, but they cost five times more.” Other new machines that are doing well are those for making lollipop and cotton bud sticks. “We are testing out a new design for making antiant lollipop sticks with a “blind” hole (hollow at the bottom but not at the top) and hope to be able to introduce this machine soon,” she said, adding that it will have an output of 700 pieces/minute. Another highlight from the Taichung-based company is its PP strapping band machine that comes with a special design for 5 mm strapping band. When asked about the company’s business, Kuo says, “We recently sold machines to one of

OCTOBER / NOVEMBER 2011

the biggest straw makers in the world, situated in Thailand, and also to Aqua in Indonesia. Our machines are sold in 100 countries but in Southeast Asia, we

vertical binary network to provide better melt flow uniformity. focus on selling to large companies.” Noting that speed and service are selling factors for the company, Kuo says next year’s highlights at Taipeiplas will be higher speed machinery with more automation.

Jumbo is working on a machine able to produce anti-ant lollipop sticks

Profile for Plastics & Rubber Asia

Plastics and Rubber Asia October-November 2011 Issue  

Plastics and Rubber Asia October-November 2011 electronic issue

Plastics and Rubber Asia October-November 2011 Issue  

Plastics and Rubber Asia October-November 2011 electronic issue