Apparatus, method, and coating die for producing long fiber-reinforced thermoplastic resin composition
US5783129A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1996 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Feb 16, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S366/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and methods are provided for producing a long fiber-reinforced thermoplastic resin compositions by initially loosening a continuous fiber bundle by a fiber loosening device so as to form a moving web-like continuous fiber bundle. At least one side of the moving web-like continuous fiber bundle which passes through the die is coated with a thermoplastic resin melt extruded through a slit disposed in the die by an extruder. The slit has substantially the same width as that of the web-like continuous fiber bundle to provide an even supply of the resin melt in the width direction of the web-like continuous fiber bundle. A thermoplastic resin melt is supplied to the slit via a plurality of resin supply paths which are branched successively on the same plane. The resin supply paths are positioned so as to be symmetrically planar with respect to the central axis of the root paths thereof. The web-like continuous fiber bundle is impregnated with the thermoplastic resin melt and can thereafter be shaped to a final product form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.