C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/08 (2006.01) B32B 27/08 (2006.01) B32B 27/32 (2006.01) C08J 5/18 (2006.01) C08L 23/04 (2006.01) C08L 23/06 (2006.01)
Patent
CA 2281574
A polymer blend, and mono- and multilayer films made therefrom, having improved properties such as heat sealing or puncture resistance, wherein the blend has a first polymer of ethylene and at least one .alpha.-olefin having a polymer melting point between 55 to 75 ~C; a second polymer of ethylene and at least one .alpha.-olefin having a polymer melting point between 85 to 110 ~C; a third thermoplastic polymer having a melting point between 115 to 130 ~C; and optionally a fourth polymer, e.g. EVA, having a melting point between 90 to 100 ~C.
Cette invention se rapporte à un mélange de polymères, à des films mono- et multi couche fabriqués à partir d'un tel mélange doté de caractéristiques perfectionnées telles que l'aptitude au thermoscellage ou la résistance aux perforations. Ledit mélange comporte un premier polymère composé d'éthylène et d'au moins une .alpha.-oléfine et possédant un point de fusion compris entre 55 et 75 ·C; un second polymère composé d'éthylène et d'au moins une .alpha.-oléfine et possédant un point de fusion compris entre 85 et 110 ·C; un troisième polymère thermoplastique ayant un point de fusion compris entre 115 et 130 ·C; et éventuellement un quatrième polymère, tel qu'un E.V.A, ayant un point de fusion compris entre 90 et 100 ·C.
Georgelos Paul Nick
Wilhoit Darrel Loel
Curwood Inc.
Sim & Mcburney
Viskase Corporation
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