Method for producing a dry preform produced by knitting, method for manufacturing a product made of composite materials from said preform
US11433568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2018 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Dec 11, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2505/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a transformable dry preform, in particular for the creation of a product made of composite materials, includes the sequence of the following steps: simultaneous weft/wale knitting of at least one stitch thread and at least one unidirectional reinforcement thread, at least one stitch thread including a material, the nature of which being different to that of a material comprised in at least one unidirectional reinforcement thread, at least one of the materials being thermoplastic and having a melting point lower than the melting point of at least one other material, referred to as reinforcement material; and creating of a three-dimensional knit that constitutes a dry preform in the shape of the product that is to be obtained. Additionally, a product made of composite materials can be produced using the dry preform created by the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.