Laminate of a substrate and an extruded high density...

Details Laminate of a substrate and an extruded high density... Laminate of a substrate and an extruded high density...

B - Operations, Transporting

32

B

B32B 27/32 (2006.01) B32B 25/08 (2006.01) B60J 10/00 (2006.01) B60J 10/04 (2006.01)

Patent

CA 2396256

A laminate (12) of an elastomeric substrate (18) and a high density polyethylene layer having certain properties is disclosed. The preferred high density polyethylene has a density of from 0.940 to 1.000 g/cm3, a melt index of less than 10 grams per 10 minutes under conditions of 190 °C and 2.160 kg load and 298.2 kPa, and a melt index of greater than 5 grams per 10 minutes under conditions of 190 °C and 21.6 kg load and 2,982.2 kPa pressure. The laminate (12) is particularly well suited for use in automotive seals.

L'invention concerne un laminé (12) d'un substrat (18) élastomère et d'un polyéthylène haute densité présentant certains propriétés. Le polyéthylène haute densité préféré a une densité de 0,940 à 1,000 g/cm?3¿, un indice de fusion inférieur à 10 g par 10 minutes dans des conditions de température de 190 ·C et de charge de 2,160 kg et de pression de 298,2 kPa, et un indice de fusion supérieur à 5 grammes par 10 minutes dans des conditions de température de 190 ·C, de charge de 21,6 kg et de pression de 2 982,2 kPa. Le laminé (12) peut être utilisé avantageusement dans les joints d'étanchéité d'automobiles.

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