B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/32 (2006.01) B32B 27/18 (2006.01)
Patent
CA 2183086
Oriented polyolefin multilayer film having a base layer containing polypropylene and at least one outer layer, the outer layer including a mixture of a first antiblock additive having a mean particle size of from 3 to 6 µm and a second antiblock additive having a mean particle size of from 2 to 4 µm, with the proviso that when the first additive is present in an amount of from 3 to 5 µm, the second antiblock additive has a particle size of greater than 2.5 µm. Such films have particularly good antiblock characteristics compared with those having either of the particular types of antiblock agent on their own,
Un film à couches multiples en polyoléfine orientée a une couche de base contenant du polypropylène et au moins une couche externe, la couche externe incluant un mélange d'un premier additif antiadhérent ayant une granulométrie moyenne allant de 3 à 6 µm et un second additif antiadhérent ayant une granulométrie moyenne allant de 2 à 4 µm, une condition à satisfaire étant que lorsque le premier additif présent a de 3 à 5 µm, le second additif antiadhérent a une granulométrie supérieure à 2,5 µm. De tels films ont des propriétés antiadhérentes particulièrement bonnes par comparaison avec ceux ayant uniquement l'un ou l'autre des deux types d'agents antiadhérents indiqués.
Courtaulds Films (holdings) Ltd.
Riches Mckenzie & Herbert Llp
LandOfFree
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