C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/18 (2006.01) B32B 27/08 (2006.01) B32B 27/18 (2006.01) B32B 27/32 (2006.01) B65D 65/40 (2006.01) B65D 81/22 (2006.01) C08K 5/103 (2006.01) B65D 75/00 (2006.01)
Patent
CA 2208028
A multi-layer heat-shrinkable film endowed with high anti-fog properties, and having a barrier layer (1), an adhesive layer (2, 2'), and an adhesive layer (3, 3'), wherein at least one external layer (3, 3') is made of a polyolefinic polymer. Said anti-fog properties are obtained by incorporating in said film from 1 to 5 % by weight of a composition comprising (i) a glycerol mono-ester of a saturated or unsaturated fatty acid having from 8 to 20 carbons, (ii) a glycerol di-ester of a saturated or unsaturated fatty acid having from 8 to 20 carbons, and (iii) at least one polyoxyethylene ether of a fatty alcohol having from 8 to 20 carbons.
Film multi-couche thermorétractable doté de propriétés anti-buée efficaces, comprenant une couche barrière (1), une couche d'adhésif (2, 2') et une couche d'adhésif externe (3, 3') cette dernière étant constituée d'un polymère polyoléfinique. On confère au film ses propriétés anti-buée en incorporant dans ce dernier entre 1 et 5 % en poids d'une composition renfermant: (i) un mono-ester de glycérol d'un acide gras saturé ou non comprenant 8 à 20 atomes de carbone, (ii) un diester de glycérol d'un acide gras saturé ou non comprenant 8 à 20 atomes de carbone, et (iii) au moins un éther de polyoxyéthylène d'un alcool gras comprenant 8 à 20 atomes de carbone.
Bax Serge
Buongiorno Livio
Ciocca Paolo
Cryovac Inc.
Smart & Biggar
W.r. Grace & Co.,-Conn.
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