Cling film laminate structure

B - Operations – Transporting – 32 – B

Patent

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Details

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

Patent

CA 2544644

A cling film laminate structure, a process for making the laminate, and use of the laminate in a fastening system for various goods is disclosed. The laminate is composed of a cling layer having autoadhesive surface properties bonded to a substantially non-stretchable carrier layer. The carrier layer is formed of a material which eliminates, or substantially limits, stretching of the cling layer. An ethylenebased or propylene-based metallocene or single site catalyzed polyolefm provides the autoadhesive surface properties for the cling layer. Preferably, the carrier layer is comprised of a nonwoven material, or a thermoplastic film. A laminate composed of a cling layer and a non-stretchable carrier layer is particularly useful as a fastening system for a package, envelope, tape or disposable soft goods article.

La présente invention a trait à une structure laminée de pellicule autocollante, un procédé pour la fabrication d'un tel laminé, et l'utilisation d'un tel laminé dans un système d'emballage pour divers articles. Le laminé est constitué d'une couche autocollante présentant des propriétés de surface autocollante assemblée à une couche de support sensiblement non étirable. La couche de support est réalisée en un matériau qui élimine, ou limite sensiblement, l'étirage de la pellicule autocollante. Un métallocène à base d'éthylène ou à base de propylène ou une polyoléfine catalysée à site unique fournit les propriétés de surface autocollante pour la couche autocollante. De préférence, la couche de support comporte un matériau non-tissé, ou un film thermoplastique. Un laminé constitué d'une couche autocollante et d'une couche de support non étirable est particulièrement utile en tant que système d'attache pour un emballage, une enveloppe, un ruban ou un article de biens non durables.

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