Producing device and producing method for chopped fiber bundles, producing device and producing method for fiber-reinforced resin forming materials, cutting blade for carbon fiber bundles, and rotary cutter for carbon fiber bundles
US10889919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2018 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | May 31, 2038 |
Classification
- Technology area (CPC —)General
Abstract
One mode of the invention relates to a producing a device for chopped fiber bundles having a chopper unit including a cutting blade for cutting long fiber bundles, a guide for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and a structure, provided between the chopper unit and the guide, that widens the fiber bundles. The invention also relates to method for producing chopped fiber bundles by widening fiber bundles while restricting the travel direction of the long fiber bundles to be supplied to chopper unit by a guide, and obtaining chopped fiber bundles by cutting the fiber bundles with the chopper unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.