Prepreg manufacturing method and manufacturing apparatus
US11499025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2019 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Sep 10, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides an apparatus for producing a prepreg, for applying a coating liquid to a reinforcing fiber sheet, the apparatus including: a coating section including: a liquid pool storing the coating liquid and having a portion whose cross-sectional area decreases continuously and vertically downward, and a narrowed section having a slit-like outlet in communication with the lower end of the liquid pool; a running mechanism for allowing the reinforcing fiber sheet to run vertically downward and be introduced into the coating section; a take-up mechanism for taking up the reinforcing fiber sheet downward from the coating section; wall constituent members opposed to each other in the thickness direction of the reinforcing fiber sheet to form the narrowed section; and an external force application mechanism for applying an external force to the wall constituent members in the thickness direction of the reinforcing fiber sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.