Method for forming fiber-reinforced composite material
US4229397A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Dec 12, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2305/28
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for forming a uniformly mixed fibrous mat which comprises feeding a continuous high tensile modulus reinforcing fibrous material and a pre-cut thermoplastic fibrous material with a lower melting point or softening point than the temperature at which the reinforcing fibrous material melts or is damaged to a rotating rotor which is provided with projections to thereby cut the continuous fibrous material and pluck the pre-cut fibrous material, dispersing the thus treated fibrous materials into an air flow to mix the same and thereafter collecting the resulting mixed materials on a net to yield the mat. The product can thereafter optionally be compressed under heat to melt only the thermoplastic fibrous material to thereby consolidate the mat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.