Glass fiber-reinforced thermoplastic resin pellets and their production process
US6911259B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2003 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Jan 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing glass fiber-reinforced thermoplastic resin pellets, which comprises a step of drawing out glass fiber strands from the inside of glass fiber rolls and introducing them into a resin impregnation die, a step of supplying a molten thermoplastic resin into the resin impregnation die and impregnating the glass fiber strands with the thermoplastic resin, a step of drawing out the glass fiber strands impregnated with the thermoplastic resin from the resin impregnation die and cooling and solidifying the thermoplastic resin to obtain a linear molded product, and a step of cutting the molded product into a predetermined length, wherein as the glass fibers, glass fiber strands drawn out from rolls, each roll obtained by bundling monofilaments having a diameter of from 6 to 25 μm and winding them so that the inner diameter will be from 18 to 50 cm, are used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.