Polymer foam, thermoformed shapes thereof and methods of forming

Details Polymer foam, thermoformed shapes thereof and methods of forming Polymer foam, thermoformed shapes thereof and methods of forming

1983-12-12

1985-08-13

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

264321, 264DIG66, 521 79, 521 81, 521139, 521189, 521918, C08J 914

Patent

active

045351007

ABSTRACT:
A foam structure having a density of less than about 20 lbs/ft.sup.3. The method of forming the same comprising forming a homogeneous melt blend under pressure of a polymer member selected from the group consisting of polyetherimide resin particles, polycarbonate resin particles, a polymer blend of polyphenylene oxide and polystyrene in particle form imbibed with a blowing agent, followed by extrusion of the same into a lower pressure atmosphere. A composition comprising said particles imbibed with methylene chloride, chloroform, 1,1,2-trichloroethane or mixtures thereof. A method of thermoforming said foam in sheet form.

REFERENCES:
patent: 3249561 (1966-05-01), Hendrix
patent: 3277029 (1966-10-01), Chadwick
patent: 3290261 (1966-12-01), Goldblum
patent: 3903224 (1975-09-01), Billiu
patent: 3962154 (1976-06-01), Elgi
patent: 4065401 (1977-12-01), Cohnen et al.
patent: 4097425 (1978-06-01), Niznik
patent: 4263409 (1981-04-01), Liberti
patent: 4280950 (1981-07-01), Nagata et al.
patent: 4315076 (1982-02-01), Gagliani et al.
patent: 4334030 (1982-06-01), Kochonowski
patent: 4360486 (1982-11-01), DiBiosi et al.
patent: 4361453 (1982-11-01), Gagliani et al.
patent: 4367296 (1983-01-01), Gagliani et al.

Affiliated with

Also associated with

Rating

Polymer foam, thermoformed shapes thereof and methods of forming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymer foam, thermoformed shapes thereof and methods of forming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer foam, thermoformed shapes thereof and methods of forming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2318692