Cold-seal adhesives and comestible packages formed therewith
AssigneeCentury Adhesives Corp.
InventorsCharles O. Pike, Tamela A. Viers
Life of this patent
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Abstract
Comestibles are packaged in wrappers formed of plastic film or equivalent sheet material sealed with cold-seal adhesives containing a minor percentage of vinylpyrrolidone/styrene copolymer as a bond enhancement agent.
Claims5
A sheet material for packaging of comestibles comprising a continuous film of polyolefin resin that has been corona treated on one surface thereof, which surface has printed thereon in ink artwork and text and also a geometric pattern of cold-seal adhesive containing as an active ingredient between about 4-6% by weight of vinylpyrrolidone/styrene copolymer, rubber 25-45%, acrylic polymer 20-25%, tackifier 25-35%.
Dependencies are inferred from the claim text.