B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/36 (2006.01)
Patent
CA 2649258
[PROBLEMS] To provide a biaxially oriented polyester film, particularly a biaxially oriented polyester film for forming members which is useful as a substrate in producing metallic forming members by metal vapor deposition or as a surface protective film in the forming of decorative sheets. [MEANS FOR SOLVING PROBLEMS] A biaxially oriented polyester film for forming members, which is an at least two-ply laminate constituted of a layer (A) made of a polyester (A) and a layer (B) made of a polyester (B) wherein the interlaminar strength between the layers (A) and (B) is 5 N/15mm or above and the stress values (F100 values) at 100% elongation in the lengthwise and widthwise directions at 200°C and 150°C are 1 to 50 MPa.
L'invention permet de produire un film polyester orienté de manière biaxiale, en particulier un film polyester orienté de manière biaxiale pour former des éléments qui est utile comme substrat dans la production d'éléments de formation métallique par dépôt de vapeur métallique ou comme film protecteur de surface dans la formation de feuilles décoratives. L'invention concerne un film polyester orienté de manière biaxiale pour former des éléments, qui est un stratifié à au moins deux épaisseurs constitué d'une couche (A) faite d'un polyester (A) et d'une couche (B) faite d'un polyester (B), la résistance interlaminaire entre les couches (A) et (B) étant de 5 N/15 mm ou plus et les valeurs de contrainte (valeur F100) à 100 % d'élongation dans les directions de la longueur et de la largeur à 200 °C et 150 °C allant de 1 à 50 MPa.
Kimura Masahiro
Manabe Isao
Matsui Ryosuke
Smart & Biggar
Toray Industries Inc.
LandOfFree
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