Process for producing a fiber-reinforced thermoplastic resin molded article
US5783132A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1995 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Jun 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1044
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing a fiber-reinforced thermoplastic resin molded article including: (a) projecting a sheet-holding member from a cavity face of a lower mold towards a cavity face of an upper mold, (b) placing a heated fiber-reinforced thermoplastic resin sheet on the sheet-holding member, (c) closing the upper and lower molds, (d) in the step of closing the upper and lower molds, putting the sheet-holding member into the lower mold before the cavity face of the upper mold contacts with the resin sheet, (e) maintaining the upper and lower molds in a closed state, and (f) opening the upper and lower molds and removing the molded article. A fiber-reinforced thermoplastic resin molded article which has a good surface appearance and, if any, whose protrusions such as ribs and bosses are sufficiently filled with thermoplastic resin and reinforcing fibers, can be produced, without using an additional thermoplastic resin sheet and without repeating the molding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.