Radio frequency (rf) weldable adhesive films

Details Radio frequency (rf) weldable adhesive films Radio frequency (rf) weldable adhesive films

B - Operations, Transporting

32

B

B32B 27/32 (2006.01) C08J 5/18 (2006.01)

Patent

CA 2370893

Flexible, halogen-free films, both multilayer films and monolayer films, can replace polyvinyl chloride films in applications requiring high speed welding by high frequency radiation. The monolayer films result from a blend of a non- polar olefin polymer and a polar olefin polymer that contains carbon monoxide. The multilayer films have like that of the monolayer films, but located so as to promote high frequency sealing. Products made from such films are particularly well suited for medical device applications.

L'invention concerne des films flexibles, exempts d'halogènes, des films multicouches et monocouche, qui peuvent remplacer des films de polychlorure de vinyle, dans des applications où on a recours à un soudage à grande vitesse par rayonnement à haute fréquence. Les films monocouche proviennent d'un mélange d'un polymère d'oléfine apolaire et d'un polymère d'oléfine polaire qui contient du monoxyde de carbone. Les films multicouches proviennent d'un mélange similaire à celui des films monocouche, mais sont localisés de manière à favoriser un soudage par haute fréquence. Des produits constitués de tels films sont particulièrement appropriés aux utilisations impliquant des dispositifs médicaux.

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