Thermoforming process for polyalkylene terephthalate polyester r

Details Thermoforming process for polyalkylene terephthalate polyester r Thermoforming process for polyalkylene terephthalate polyester r

1976-11-05

1978-11-28

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

528271, 528490, B29C 1704

Patent

active

041276310

ABSTRACT:
A process for producing shaped articles of polyalkylene terephthalate resins involves thermoforming a substantially unoriented sheet of said resin which sheet has an average crystallinity thermally induced in the range of about 0% to 18% and an average temperature in the range of about 210.degree.-300.degree. F., in contact with a mold at a temperature in the range of about 240.degree.-350.degree. F. which mold is preferably at a higher temperature than said sheet. Optionally a differential in applied pressure below about 5 atmospheres can be utilized in the thermoforming.

REFERENCES:
patent: 3496143 (1970-02-01), Siggel et al.
patent: 3830616 (1974-08-01), Hawkins
patent: 3960807 (1976-06-01), McTaggart
patent: 3961008 (1976-06-01), Kuratsuji et al.
patent: 4020126 (1977-04-01), Gander et al.

Affiliated with

Also associated with

Rating

Thermoforming process for polyalkylene terephthalate polyester r does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermoforming process for polyalkylene terephthalate polyester r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoforming process for polyalkylene terephthalate polyester r will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-977791