Polyolefin/copolyamide rf active adhesive film

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 77/00 (2006.01) B32B 27/06 (2006.01) B32B 27/32 (2006.01) B32B 27/34 (2006.01) C08F 255/02 (2006.01) C08F 265/04 (2006.01) C08G 69/34 (2006.01) C08J 5/18 (2006.01) C08L 23/08 (2006.01) C08L 51/06 (2006.01) C08L 77/02 (2006.01) C08L 77/06 (2006.01) C08L 77/08 (2006.01) C09J 7/00 (2006.01) C09J 123/08 (2006.01) C09J 177/00 (2006.01) C09J 177/02 (2006.01) C09J 177/06 (2006.01) C09J 177/08 (2006.01)

Patent

CA 2404692

Flexible, halogen-free, high frequency-sealable films fabricated from a blend of a copolyamide and a polyolefin having a carboxylic acid or carboxylic acid anhydride functionality have sufficient copolyamide to yield a DLF of at least 0.05 at a frequency of 27 megahertz and serve as effective substitutes for flexible polyvinyl chloride films. The films may be mono-layer films or multi- layer films, especially where the high frequency-sealable films serve as outer or skin layers in multi-layer films. Products made from such mono-layer and multi-layer films find utility in a number of applications, especially for medical device applications.

Films souples exempts d'halogène pouvant être scellés sous haute fréquence et fabriqués à partir d'un mélange de copolyamide et de polyoléfine possédant une fonctionnalité d'acide carboxylique ou d'anhydride d'acide carboxylique. Ces films contiennent suffisamment de copolyamide pour produire un facteur de perte diélectrique (DLF) d'au moins 0,05 à une fréquence de 27 mégahertz et servir de substituts efficaces pour des films souples de chlorure de polyvinyle. Ces films peuvent être des films monocouches ou multicouches, particulièrement quand ces films pouvant être scellés sous haute fréquence servent de couches extérieures ou de peaux dans des films multicouches. Les produits fabriqués à partir de ces films monocouches et multicouches sont utiles dans une variété de mises en application, en particulier, dans le domaine médical.

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