Tear-resistant polyester film and laminated sheets comprised of

Details Tear-resistant polyester film and laminated sheets comprised of Tear-resistant polyester film and laminated sheets comprised of

1991-05-29

1992-12-22

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428336, 428338, 428339, 428480, 428481, 524 95, 524 97, B32B 2710, B32B 2736

Patent

active

051733579

ABSTRACT:
Polyester film has a thickness of between 10 to 500 .mu.m and exhibits excellent tear strength retention against thermal history conditions. The film is prepared from a resin composition which includes 100 parts by weight of a polyester consisting essentially of alkylene terephthalate groups as the main recurring units in the polymer chain and between 0.1 to 5 parts by weight of a bisoxazoline compound incorporated thereinto. The film is usefully employed as a sterilizing bag or as a food-packaging material and can be laminated to anther sheet of film or to paper.

REFERENCES:
patent: 4499219 (1985-02-01), Buxbaum et al.
patent: 4595612 (1986-06-01), Tavss et al.
patent: 4946372 (1990-08-01), Avni
patent: 4957578 (1990-09-01), Huffman et al.
patent: 5049603 (1991-09-01), Mochizuki

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