Process for the production of elastic tapes from polyurethane

Details Process for the production of elastic tapes from polyurethane Process for the production of elastic tapes from polyurethane

1987-06-29

1988-11-29

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 85, 156229, 264146, 2642893, 264342R, 264348, B32B 3108

Patent

active

047879483

ABSTRACT:
Process for the production of elastic tapes from thermoplastic polyurethane elastomers, wherein the thermoplastic is extruded to form a flat or tubular film and is slit in the usual manner, the extruded film being oriented lengthwise at least in the ratio of 1:1.5, cooled and stored until the modulus of elasticity has increased by at least 25%, measured according to DIN 53,455, before the film is slit, and the use of these tapes for the production of elastic seals.

REFERENCES:
patent: 3324217 (1967-06-01), Armstrong et al.
patent: 4645135 (1987-02-01), Morris et al.
patent: 4648928 (1987-03-01), Ales

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