Antistatic sheet material, package and method of making

B - Operations – Transporting – 29 – C

Patent

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154/140, 220/2,

B29C 47/08 (2006.01) B32B 27/08 (2006.01) B32B 27/16 (2006.01) B65D 30/08 (2006.01)

Patent

CA 2004137

An antistatic sheet material and package formed therefrom is provided. The laminated sheet material includes a first inner layer which is preferably a coextruded film having a polyolefin ply and second copolymer ply of ethylene-acrylic acid copolymer, ethylene vinyl acetate copolymer, or blends thereof, a second intermediate layer such as a polyester film having an electrically conductive material thereon, and an outer layer of an antistatic material. The laminate may be formed by hot roll lamination or an adhesive may be used between the first and second layers.

L'invention porte sur un matériau pour feuille antistatique et sur un produit de conditionnement dérivé. Le matériau pour feuille laminée comprend une première couche intérieure, qui est de préférence une pellicule coextrudée comportant un pli de polyoléfine et un second pli à base de copolymère d'éthylène-acide acrylique ou de copolymère d'éthylène-acétate de vinyle, ou de leurs mélanges; une seconde couche intermédiaire, comme une pellicule de polyester recouverte d'un matériau conducteur d'électricité; une couche extérieure à base d'un matériau antistatique. Le laminé peut être produit par lamination à chaud, ou avec utilisation d'un adhésif entre la première et la seconde couche.

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