Polymer foam, thermoformed shapes thereof and method of forming

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

1985-07-19

1986-07-01

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 53, 264321, 521 56, 521 59, 521 60, 521 79, 521 81, 521 98, C08J 914

Patent

active

045981043

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: 3020248 (1962-02-01), Henning
patent: 3089857 (1963-05-01), Pottenger
patent: 4097425 (1978-06-01), Niznik
patent: 4280950 (1981-07-01), Nagata et al.
patent: 4334030 (1982-06-01), Kochanowski
patent: 4360486 (1982-11-01), DiBiasi et al.

Affiliated with

Also associated with

Rating

Polymer foam, thermoformed shapes thereof and method 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 method 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 method of forming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1082841