Method for circulating pressurized fluids to improve gas channel cooling
US6680011B2 · kind B2 · utility
6Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Nov 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/1729
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a molded article comprises injecting a quantity of molding material sufficient for the preparation of the molded article into a cavity of a mold, injecting a first portion of fluid into the mold cavity, creating a gas channel within the molding material, and forming the molded article within the mold cavity. At least a portion of the first portion of fluid is exhausted through a gas port, a second portion of fluid is injected into the mold material, and the molded article is cooled within the mold cavity to a temperature beneath a softening point of the molding material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.