Method for injection molding
US5096655A · kind A · utility
12Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | May 21, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/812
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing an injection molded product includes the step of introducing an amount of a molten thermoplastic sufficient for the preparation of the injection molded product into a mold cavity. A quantity of heated gas is introduced into the mold cavity, the molten thermoplastic in the mold cavity thereby forming a gas cavity in the molten thermoplastic. The heated gas is then vented from the gas cavity and a cooling gas is introduced into the gas cavity. The injection molded product is cooled and then the cooling gas is vented from the gas cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.