Process for producing a multilayer molded article
US5053179A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1988 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Nov 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/68
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a process for producing a multilayer molded article which includes supplying at least one piece of a skin material having a desired shape and a resin melt between unclosed upper and lower molds and closing the molds to form a multilayer molded article including the thermoplastic resin and the skin material which covers only a desired part of the article, wherein the resin melt is supplied at or near a center area of a rear face of the skin material, or wherein after the skin material is lifted to a position at which the skin material contacts a cavity surface of the upper mold by a vertically movable rod or bar which is positioned at a part of the lower mold on which the skin material is placed, the resin melt is supplied between the upper and lower molds and the rod or bar is returned to a determined position at least before the molding is completed. This process economically produces a multilayer molded article in which the skin material covers the desired part of the article without displacement and which has a good feeling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.