Method for manufacturing a prepreg made of a composite material
US12138869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2019 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Jan 24, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0872
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The method comprises the following consecutive steps: providing at least one reinforcement layer and at least one matrix sheet made of thermoplastic material; forming a complex with the reinforcement layer and the matrix sheet; and placing the complex in a production tool so that the thermoplastic material impregnates the fibers of the reinforcement layer(s) in order to form a prepreg. The method comprises, in the production tool, the following consecutive steps: heating the complex to a temperature higher than the melting temperature of the thermoplastic material without applying pressure; heating the complex to a temperature higher than the melting temperature of the thermoplastic material while applying a production pressure higher than atmospheric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.