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Adhesive Tape Systems

Brake Shim Adhesives Solutions for Noise Reduction

Adhesive Tape Systems

Engineered to Perform Better™


Solutions for Noise Reduction ORAFOL‘s brake shim adhesives are advanced solutions for noise reduction for highly demanding automotive brake applications. This adhesive range was specifically designed to have excellent adhesion properties on most brake materials (e.g. rubber, steel, powder coated metals). The products were developed to withstand extreme shear forces and temperatures, which occur during brake operation. For decades, ORAFOL’s brake shim products have proven their worth in numerous brake systems. The long-term experience gained in this field and state-of-the art equipment have provided the possibility to offer well proven systems as well as newly developed products that meet upcoming challenges e.g. cold-noise damping. ORAFOL’s Brake Shim Solutions Offer · Damping behavior tailored to various brake systems · Excellent damping efficiency · Reliable noise reduction and long-term stability · Wide damping frequency range · Excellent shear and temperature resistance · Variety of available liners compatible to various application processes and complex product shapes

Adhesives

2

Damp. Max @ ~1000 Hz (° C)

Temp. Resistance (° C)

Peel Performance on Steel (N/25 mm)

Acrylate A

26

> 220

21

Acrylate B

26

> 220

24

CNA A

12

180

20

CNA B

2

150

17

Silicone A

80

> 220

26

Silicone B

108

> 220

26


Properties of Brake Shim Adhesives Damping Profiles (Loss Factor) The spectra were recorded using 80 - 120 µm adhesive films adhered to a 5.0 mm stainless steel ground plate and a 0.4 mm stainless steel shim. Normalized Loss Factor 0.5 mm Steel + 120 µm Adhesive + 0.4 mm Steel

Acrylate A

1

temperature (° C)

Acrylate B

NLF @ ~1000 Hz

0.75 0.5 0.25

CNA A CNA Silicone A Silicone B

0 -30

-10

10

30

50

70

11000

90

110

130

frequency (Hz)

The top figure summarises the damping behavior of6600the available brake shim adhesives. For better comparison the curves are normalized and the first Eigenfrequency (at around 1000Hz) of the loss factor is plotted over the temperature. The acrylics, 4400 as well as the cold noise acrylics (CNA), damp efficiently between -20° C and 50° C whereas the silicones at much higher temperatures between 2200 50° C and 130° C. The bottom graphs give a more detailed look onto the damping behavior of each 0 adhesive. Shown is the damping efficiency (in %) at different -30 -20 -10 frequencies 0 10 20 30 40 and 50 60temperatures. 70 80 90 100 110 120 130 140 150

damping (%)

8800

temperature (° C)

Damping (%) 0

1

2

3

8800

6600 4400

damping (%)

8800

frequency (Hz)

11000

6600 4400

2200

2200

0 -30 -20 -10

0

10

20

30

40

50

60

70

80

0 -30 -20 -10

temperature (° C)

90 100 110 120 130 140 150

0

10

20

30

temperature (° C)

40

50

2

4

5

11000 0

90 100 110 120 130 140 150

1

2

3

4

5

damping (%)

4400

frequency (Hz)

damping (%)

6600

6600 4400

2200

2200

0

10

20

30

40

50

60

70

80

temperature (° C)

90 100 110 120 130 140 150

0 -30 -20 -10

0

10

20

30

temperature (° C)

0

1

2

3

40

50

60

70

80

90 100 110 120 130 140 150

temperature (° C)

Silicone A

Silicone B

4

11000

5

8800

0

1

2

3

4

5

4400

2200

damping (%)

6600

frequency (Hz)

8800

damping (%)

frequency (Hz)

80

8800

0 -30 -20 -10

Silicones

70

CNA B 3

8800

frequency (Hz)

Cold Noise Acrylics

1

60

temperature (° C)

CNA A 11000 0

11000

5

Acrylate B

11000

damping (%)

frequency (Hz)

Acrylics

Acrylate A

4

6600 4400

2200

0 -30 -20 -10

0

10

20

30

40

50

60

70

80

90 100 110 120 130 140 150

temperature (° C)

0 -30 -20 -10

0

10

temperature (° C)

20

30

40

50

60

70

80

90 100 110 120 130 140 150

temperature (° C)

3 0

1

2

3

4

5

0

1

2

3

4

5


ORAFOL‘s Product Range for Brake Applications Adhesive Type

Adhesive Thickness (µm)

Liner Mounting Side (Brake Side)

Liner Laminating Side (Brake Shim Side)

ORABOND® 1309

Silicone

50

White PET/LDPE-laminate (suitable for Bunetto process)

Clear 36 µm PET

ORABOND® 1310

Silicone

80

White PET/LDPE-laminate (suitable for Bunetto process)

Clear 36 µm PET

ORABOND® 1373

Acrylic

100

Yellow siliconized paper 90 g/m²

ORABOND® 1373W

Acrylic

100

White PE-coated paper 140 g/m²

ORABOND® 1373WA

Acrylic

100

White PE-coated paper 100g /m²

ORABOND® 1374

Acrylic

50

Yellow siliconized paper 90 g/m²

-

ORABOND® 1374WA

Acrylic

50

White PE-coated paper 100 g/m²

-

ORABOND® 1321

Acrylic

70

Clear 50 µm PET (opt. printed)

White siliconised paper 90 g/m²

ORABOND® 1319

Acrylic

70

Yellow siliconized paper 90 g/m2

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YSTEM C ER TS EN

ATION FIC TI

MANAGE M

Product

ISO 9001 ISO 14001 ISO 50001

ORAFOL Europe GmbH Orafolstraße 1, D-16515 Oranienburg, Germany Tel: +49 (0)3301 864-0 / adhesive.tapes@orafol.de Find out more about our products at: www.orafol.com

ORAFOL Europe GmbH. ORABOND® is a registered trademark of ORAFOL Europe GmbH. - 48201-110 (09/2020)

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Solutions for Noise Reduction

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Solutions for Noise Reduction

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