Extrusion molding of polyamidoimide resins
US4431600A · kind A · utility
4Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1982 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | Jan 19, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2077/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for extrusion molding a polyamidoimide resin comprising: feeding a polyamidoimide molding material in a granular solid or powder form into an extruder; then simultaneously compressing and melting the polyamidoimide molding material under a pressure of about 300 kg/cm.sup.2 or more by heating it to a temperature between the melting point and the decomposition temperature of the polyamidoimide resin; and next introducing the molten polyamidoimide molding material into a die such that the molten material is shaped to a desired form, solidified in the die, and is extruded from the die in a solidified form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.