High-strength non-chlorinated multi-layered polymeric article

Details High-strength non-chlorinated multi-layered polymeric article High-strength non-chlorinated multi-layered polymeric article

B - Operations, Transporting

32

B

B32B 27/12 (2006.01) D06N 3/18 (2006.01) G09F 7/00 (2006.01) G09F 21/04 (2006.01)

Patent

CA 2162380

A multi-layered article (10) includes a fabric (12) having a polymeric sheet (14, 16) secured to each side of the fabric (12). Each polymeric sheet (14, 16) secured to the fabric (12) has two non-chlorinated polymeric layers. The first non-chlorinated polymeric layer (A, A') is disposed on the inner side of each sheet and contains an ethylene copolymer that has a Shore A hardness less than 85. The second non-chlorinated polymeric layer (B, B') is disposed on the outer side of each sheet and contains a polymer having a Shore A hardness greater than 85. The multi-layered article (10) demonstrates good flex-crack resistance to make it suitable for use in a roll-up sign (30) or a truck trailer cover (40).

L'invention concerne un article multicouches (10) comprenant un tissu (12) présentant une feuille polymère (14, 16) fixée aux deux côtés du tissu (12). Chaque feuille polymère (14, 16) fixée au tissu (12) comporte deux couches polymères non chlorées. La première couche polymère non chlorée (A, A') est disposée sur le côté interne de chaque feuille et elle contient un copolymère éthylénique qui a une dureté Shore A inférieure à 85. La seconde couche polymère non chlorée (B, B') est disposée sur le côté externe de chaque feuille et elle contient un polymère ayant une dureté Shore A supérieure à 85. L'article multicouches (10) a une bonne résistance aux craquelures produites par flexion, ce qui permet de l'utiliser pour des signalisations (30) que l'on peut enrouler ou pour des bâches (40) destinées à des remorques de camions.

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