Method for the manufacture of laminated packing material...

B - Operations – Transporting – 32 – B

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154/106, 154/108

B32B 27/16 (2006.01) B29C 65/54 (2006.01) B65D 65/40 (2006.01)

Patent

CA 2007483

A method for the manufacture of a laminated material for the manufacture of packing containers with good gas and aroma barrier properties. The laminated material has a base layer and a layer serving as a gas and aroma barrier. The method comprises coating a first side of a polymer carrier with a 50-500 .ANG. thick barrier layer of silicon dioxide or silicon nitride, by means of vacuum deposition. A second side of the polymer carrier is bonded to a first side of a base layer having first and second sides, by means of an intermediate layer of bonding agent.

Divulgation d'une méthode de fabrication d'un matériau laminé, destiné à la fabrication d'emballages d'expédition et présentant une bonne étanchéité aux gaz et aux arômes. Ce matériau comporte une couche de base et une couche formant une barrière aux gaz et aux arômes. La méthode divulguée consiste à appliquer, par métallisation sous vide, à une première face d'un support en polymère, une couche protectrice de dioxyde de silicium ou de nitrure de silicium, de 50 à 500 .ANG. d'épaisseur. Une deuxième face du support en polymère est collée, au moyen d'une couche intermédiaire d'agent liant, à une première face d'une couche de base comportant deux faces.

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