Process and apparatus for producing sheet-shaped prepreg
US9238336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2011 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Aug 8, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0872
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing a sheet-shaped prepreg includes: a fiber bundle introduction step in which tape-shaped reinforcing fiber bundles are disposed in a multilayer arrangement in the thickness direction and introduced into a die to which a molten thermoplastic resin has been supplied; a fiber bundle thickness reduction step in which each of the tape-shaped reinforcing fiber bundles is widened by means of spreading to reduce the thickness; a resin impregnation step in which the tape-shaped reinforcing fiber bundles are impregnated with the molten resin in the die; and a lamination step in which the plurality of resin-impregnated tape-shaped reinforcing fiber bundles are laminated in the die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.