Apparatus for the biaxial orientation of a deformable sheet mate

Details Apparatus for the biaxial orientation of a deformable sheet mate Apparatus for the biaxial orientation of a deformable sheet mate

1980-12-30

1983-05-24

Mackey, Robert

Textiles: cloth finishing

Expanding device for textile webs

Biaxial expansion

26 92, 26106, 2642902, 425 66, B29D 724

Patent

active

043843921

ABSTRACT:
The present invention is an apparatus for biaxial orientation of precrystalline polyacrylonitrile polymer sheet consisting essentially of a machine direction orientor which stretches the sheet in the machine direction a transverse direction orientor which stretches the sheet in the direction 90.degree. to the machine direction, both processes of which may be completed rapidly in a heated essentially aqueous environment.

REFERENCES:
patent: 458678 (1891-09-01), Narwood
patent: 469256 (1892-02-01), Laval
patent: 2582165 (1952-01-01), Rosenfeld
patent: 2719323 (1955-10-01), Thompson
patent: 3055048 (1962-09-01), Koppehele
patent: 3172150 (1965-03-01), Dornier
patent: 3283981 (1966-11-01), Allen et al.

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