Preformed material for fiber reinforced plastics
US4906506A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1987 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Dec 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3301
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A preformed material for use in fiber reinforced plastics is formed by laminating and integrally bonding a plurality of sheet-like substrates comprising reinforcing fibers. At least one of the laminated substrates is a woven fabric substrate having bonding material composed of a thermoplastic polymer pre-adhering to the substrate and extending substantially linearly along reinforcing yarns or auxiliary filamentary yarns of the substrate. Due to the bonding material the substrates of the preformed material are effectively bonded to each other even if the amount of the bonding material is small, no deterioration occurs in the arrangement and the distribution of the reinforcing fibers, no dislocation of the substrates occurs during a manufacturing process, and excellent characteristics of and a high productivity for forming the fiber reinforced plastics can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.