Method of coextruding plastics to form a composite sheet

Details Method of coextruding plastics to form a composite sheet Method of coextruding plastics to form a composite sheet

1981-12-04

1985-06-04

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming electrical articles by shaping electroconductive...

15624411, 264105, 264171, 264177R, 4251311, 4251335, B29D 908

Patent

active

045213593

ABSTRACT:
This invention pertains to a method of producing a composite sheet of plastic materials by means of coextrusion. Two plastic materials are matched with respect to their melt indices. These matched plastic materials are then coextruded in a side-by-side orientation while hot and soft to form a composite sheet having a substantially uniform demarkation therebetween. The plastic materials are fed at a substantially equal extrusion velocity and generally have substantially equal viscosities. The coextruded plastics can be worked after coextrusion while they are still hot and soft.

REFERENCES:
patent: 1476392 (1923-12-01), Carroll
patent: 1978163 (1934-10-01), Megow
patent: 2696640 (1954-12-01), Wienand
patent: 3276943 (1966-10-01), Kawamura
patent: 3532570 (1970-10-01), Cotter
patent: 3557262 (1971-01-01), Mitchell et al.
patent: 3629037 (1971-12-01), Masuda et al.
patent: 3849051 (1974-11-01), Solbeck
patent: 4055526 (1977-10-01), Kiyokawa et al.
patent: 4105829 (1978-08-01), Venero
patent: 4152387 (1979-05-01), Cloeren
patent: 4169816 (1979-10-01), Tsien
patent: 4197169 (1980-04-01), Zahn et al.
patent: 4259417 (1981-03-01), Bellows et al.
patent: 4272312 (1981-06-01), Thompson
patent: 4272471 (1981-06-01), Walker
patent: 4277317 (1981-07-01), Grimes et al.
patent: 4279732 (1981-07-01), Bellows et al.
patent: 4285794 (1981-08-01), Bellows et al.
patent: 4286027 (1981-08-01), Shropshire et al.
patent: 4293623 (1981-10-01), Klemann et al.
patent: 4312735 (1982-01-01), Grimes et al.
Extended Abstracts, vol. 79-2, The Electrochemical Society, Fall Meeting, Oct. 14-19, 1979.
"Development of a Bipolar Zn/BRz Battery", Bellows et al., Aug. 18-22, 1980.
Doe Battery & Electrochemical Contractors' Conference, vol. II, Dec. 10-12, 1979, (U.S. Dept. of Energy).

Affiliated with

Also associated with

Rating

Method of coextruding plastics to form a composite sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of coextruding plastics to form a composite sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of coextruding plastics to form a composite sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-827955