Injection molding method and injection molding machine
US10926436B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 25, 2015 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | May 24, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76832
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided is an injection molding method for resin that contains reinforcing fiber, the method being capable of easily eliminating uneven distribution of added components. The injection molding method is provided with: a plasticizing step for supplying resin pellets P and added components to a cylinder equipped with a screw 10, which has a rotating axis as the center is capable of rotating normally and in reverse, and generating molten resin by rotating the screw 10 in the normal direction; and an injecting step for injecting the molten resin M comprising the added components into a cavity. In the plasticizing step, a reverse rotation operation for reversing the rotation of the screw 10 is performed or a screw-stopping operation of stopping the normal rotation of the screw 10 is performed with a prescribed timing and for a prescribed period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.