Apparatus for and method of pressing plastic sheets

Details Apparatus for and method of pressing plastic sheets Apparatus for and method of pressing plastic sheets

1981-08-10

1982-11-23

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Reshaping or treatment of an optical preform

249134, 264293, 264320, 264337, 425385, 425394, 425403, 425411, B29C 1700, B29C 100

Patent

active

043604838

ABSTRACT:
A peripheral edge-containing member is provided to reduce the length of the projectile path of fragmented particles expelled outwardly from the peripheral edge of a frangible pressing plate which is broken during the press-stretching or press-polishing of acrylic sheets. The acrylic sheets are fabricated for use in light weight transparencies.

REFERENCES:
patent: 3562383 (1971-02-01), Ayres
patent: 3632841 (1972-01-01), Fortin
patent: 3668053 (1972-06-01), Ayres
patent: 3681483 (1972-08-01), Moore
patent: 3784655 (1974-01-01), Lewchuk et al.
patent: 3808077 (1974-04-01), Rieser et al.
patent: 3856498 (1974-12-01), Campagna et al.
patent: 3912790 (1975-10-01), Chang et al.
patent: 3937863 (1976-02-01), Moore
patent: 4147679 (1979-04-01), Scriven et al.
patent: 4231827 (1980-11-01), Wilson et al.
patent: 4268554 (1981-05-01), Gras

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