Method and apparatus for injection foam molding
US6863850B2 · kind B2 · utility
3Cited by
15References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Aug 30, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C33/68
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a foamed plastic article includes disposing a release film on a mold surface of a mold cavity. At least a portion of a bushing is inserted through the release film to form an aperture in the release film. The bushing defines an inlet for foamable material. The mold cavity is then sealed. The foamable material is then injected into the mold cavity through the inlet, wherein the foamable material is conformed to the shape of the mold cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.