B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 55/28 (2006.01) A23B 7/148 (2006.01) B29C 71/02 (2006.01)
Patent
CA 2606419
A heat-shrinkable polylactic acid (PLA) film and a method of its manufacture are provided. In an exemplary embodiment, the PLA films exhibit heat-induced growth in the cross direction with concomitant shrinkage in the machine direction. The films may comprise any grade of PLA polymer, optionally including additives, such as antiblock, slip, viscosity enhancers and combinations thereof. A method of manufacture is disclosed which includes a post-extrusion temperature conditioning step.
La présente invention concerne un film thermorétractable en acide polylactique (PLA) et le procédé de fabrication correspondant. Dans un mode de réalisation caractéristiques, les films en PLA présentent une croissance thermo-induite selon l'axe transversal concomitant avec un retrait dans le sens machine. Ces films peuvent comprendre toutes qualités de polymères du PLA, avec éventuellement des additifs tels que des améliorants d'antiblocage, de glissement et de viscosité, et certaines de leurs combinaisons. L'invention concerne également un procédé de fabrication avec, après extrusion, une opération de conditionnement à la température.
Mbm Intellectual Property Law Llp
Plastic Suppliers Inc.
LandOfFree
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