Process for making polyetherester elastomer film

Details Process for making polyetherester elastomer film Process for making polyetherester elastomer film

1986-12-17

1988-06-14

Short, Patricia

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

264178R, 2642101, 2642106, B29D 701

Patent

active

047511320

ABSTRACT:
A process is provided for preparing an elastic film of a specific elastomeric composition which is formed by melt blending two particular elastomers, each of which is composed of hard and soft segments made from poly(tetramethylene ether)glycol, 1,4-butane diol and a phenylene dicarboxylic acid or a derivative thereof. One of the elastomers has an inorganic anti-blocking agent compounded in it. The process includes the steps of melt blending, melt extrusion, quenching and providing a draw-down of 12 to 40 to form a film which is particularly suited for use as elastic leg-strips in diapers.

REFERENCES:
patent: 3651014 (1972-03-01), Witsiepe
patent: 3763109 (1973-10-01), Witsiepe
patent: 3766146 (1973-10-01), Witsiepe
patent: 3917743 (1975-11-01), Schroeder et al.
patent: 3932326 (1976-01-01), Hoh et al.
patent: 3968183 (1976-07-01), Hayashi
Nishimura et al. "Elastomers Based on Polyester", J. Macromol. Sci. (Chem), A1(4), 617-625 (1967).

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