Laminating film without a release layer, process for the product

Details Laminating film without a release layer, process for the product Laminating film without a release layer, process for the product

1996-07-10

1997-10-07

Ryan, Patrick

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428 343, 428 359, 428 85, 428283, 428288, 4283115, 4283159, 4284237, 4284248, 428913, 1563082, 156324, B32B 900

Patent

active

056746008

ABSTRACT:
The present invention relates to a film of at least two layers having at least one side softening at a lower temperature and at least one side softening at a higher temperature, wherein the higher-softening side substantially consists of a thermoplastic polyurethane which softens at above 100.degree. C. on a Kofler hot bench and the median of the softening range is at least 15.degree. C. above that of the lower-softening layer and the matrix component of the lower-softening side consists of at least one hot-bonding thermoplastic material from the group comprising polyamides, polyesters and polyurethanes having a median of the softening range on a Kofler hot bench of below 100.degree. C. and at least one additive component from the group comprising

REFERENCES:
patent: 3880691 (1975-04-01), Pannenbecker et al.
patent: 4877856 (1989-10-01), Hall et al.

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