Method of manufacturing adhesive tape
OwnerDavid Brayinventor
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Abstract
Adhesive tape is manufactured by laminating at least one layer of a heat activated adhesive film to one layer of a substrate material, and coating the thereby obtained laminate with a pressure sensitive adhesive. Because the substrate is laminated with a film, typically a random copolymer of ethylene and acrylic acid, the adhesive which is thereafter coated on the laminate will not flow through the substrate, even if a porous substrate is used.
Claims22
A method of manufacturing adhesive tape including the following steps:
- (a) laminating at least one layer of a substrate material to at least one layer of a heat activated adhesive film at a temperature of between 200.degree. F. and 500.degree. F. to obtain a laminate having a first surface of substrate material and a second surface of heat activated adhesive film;
- and
- (b) coating said second surface of said laminate with a pressure sensitive adhesive to obtain an adhesive tape, wherein said heat activated adhesive film comprises a random co-polymer of ethylene and acrylic acid.
Adhesive tape including at least one layer of a substrate material, at least one layer of a heat sensitive adhesive film comprising a random co-polymer of ethylene and acrylic acid laminated thereto and a layer of pressure sensitive adhesive, said substrate layer and said heat activated adhesive film layer together forming a laminate having a first surface of substrate material and a second surface of heat activated adhesive film, and said pressure sensitive adhesive layer being applied to said second surface.
Dependencies are inferred from the claim text.