Polyurethane film for heat applied graphics

Details Polyurethane film for heat applied graphics Polyurethane film for heat applied graphics

1996-03-21

1999-02-02

Zirker, Daniel

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428480, 428195, 428200, 4284231, B32B 300, B32B 712

Patent

active

058662480

ABSTRACT:
A composite film of two layers, comprising a graphic color layer containing at least 50 wt % thermoplastic polyurethane, at least 10 wt % pigment, and a polyester elastomer, and an adhesive layer containing a thermoplastic adhesive. The color layer contains a non-blooming internal wax lubricant constituting less than about 0.1 wt % of the color layer. A combination comprising a laminate of two layers, one layer of which contains a polyurethane and the other layer of which includes an amorphous polyester directly adhered to a fabric, the improvement comprising said layer which contains a polyurethane, having an opaque exposed surface substantially free of surface lubricants. In a process for extruding polyurethane film, the improvement comprising mixing no more than about 0.1 wt % of a non-blooming internal wax lubricant in the polyurethane, prior to extrusion.

REFERENCES:
patent: 3660212 (1972-05-01), Liebe, Jr.
patent: 4269885 (1981-05-01), Mahn
patent: 4423106 (1983-12-01), Mahn
patent: 4786349 (1988-11-01), Mahn, Sr.
patent: 5312645 (1994-05-01), Dressler
patent: 5441785 (1995-08-01), Liebe, Jr.
patent: 5573834 (1996-11-01), Stahl
Hytrel Polyester Elastomer (Product and Properties Guide).

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