B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
18/783
B32B 27/36 (2006.01) B32B 27/32 (2006.01)
Patent
CA 1314124
ABSTRACT OF THE INVENTION A coextruded heat sealable film made with nonoriented polyester and a heat seal layer comprising about 50% to about 80% of a copolyester and about 20% to about 52% of an olefin polymer is disclosed. In one preferred embodiment the polyester base layer includes from about 1% to about 5% of a polyolefin, LLDPE being preferred; and in another preferred embodiment the polyester base layer comprises a resin which in a nonoriented film form has a tensile strength of 7,000 psi or more. The heat sealable film can be laminated with aluminum foil, paper, etc. to form a composite which is heat sealable, useful in pouches and lidding stock. The heat seal layer using about 30% to about 40% LLDPE as the olefin polymer is particularly useful when the film is laminated to aluminum foil and heat sealed as lidding stock to crystallized CPET trays.
612452
Cassan Maclean
Reynolds Consumer Products Inc.
LandOfFree
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