Antistatic sheet material, package and method of making
AssigneeThe Dow Chemical Company
InventorsMichael A. Babinec, Charles L. Mott, David C. Burdeaux
Life of this patent
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Abstract
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.
Claims22
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising:
- (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers. ethylene-vinyl acetate copolymers and blends thereof.
- (b) a second intermediate layer having an electrically conductive material deposited thereon laminated to said first inner layer and adjoining said copolymer ply, and
- (c) an outer layer of an antistatic material, said opposite said first inner layer.
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising:
- (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers, ethylene-vinyl acetate copolymers, and blends thereof,
- (b) a second intermediate layer having an electrically conductive material deposited thereon.
- (c) a layer of adhesive between said first layer and said second layer bonding said first layer to said second layer with said copolymer ply adjoining said layer of adhesive, and
- (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer.
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising:
- (a) a first inner layer of a polyolefin film having antistatic properties.
- (b) a second intermediate layer having an electrically conductive material deposited thereon,
- (c) a layer of adhesive between said first layer and said second layer with said electrically conductive material of said second layer adjoining said layer of adhesive, and
- (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer.
A package adapted to receive and protect an electrostatically sensitive component, the walls of said package formed of an antistatic sheet material comprising:
- (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers, ethylene-vinyl acetate copolymers, and blends thereof,
- (b) a second layer having an electrically conductive material deposited thereon laminated to said first inner layer and adjoining said copolymer ply, and
- (c) an outer layer of an antistatic material, said outer layer being located on the side of said second layer opposite said first layer.
- said package being formed by joining together said walls along opposing side edges of facing first inner layers of said antistatic sheet material.
A package adapted to receive and protect an electrostatically sensitive component, the walls of said package formed of an antistatic sheet material comprising:
- (a) a first inner layer of a polyolefin film having antistatic properties;
- (b) a second layer having an electrically conductive material deposited thereon.
- (c) a layer of adhesive between said firs layer and said second layer bonding said first layer to said second layer, with said electrically conductive material of said second layer adjoining said layer of adhesive, and
- (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer.
- said package being formed by joining together said walls along opposing side edges of facing first layers of said antistatic sheet material.
Dependencies are inferred from the claim text.