Polyester film laminate and cassette recording tape comprised th

Details Polyester film laminate and cassette recording tape comprised th Polyester film laminate and cassette recording tape comprised th

1984-10-18

1988-04-19

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

156176, 1563099, 156322, 1563314, 427365, 4273935, 428204, 428480, B32B 710, B32B 2708, B32B 3112, B32B 3120

Patent

active

047388919

ABSTRACT:
Colored polyester film laminates, well adopted as leaders for cassette recording tapes, are facilely produced by (a) coating one face surface of a first length of polyester film with a layer of colorant and adhesive, (b) heating said coated first length of polyester film to a laminating temperature, (c) heating a second length of polyester film to essentially the same laminating temperature as that of said first length of polyester film, (d) hot calendering and coextensively laminating together said first and second lengths of polyester films to produce a polyester film laminate which comprises a colorant/adhesive interlayer, and then (e) cooling and rolling said product laminate.

REFERENCES:
patent: 3322605 (1967-05-01), Frech
patent: 4337285 (1982-06-01), Akao et al.
patent: 4387129 (1983-06-01), Vincent
patent: 4486508 (1984-12-01), Coughlin et al.

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