Controlling the formation of imperfections due to polymeric shrinkage during molding operations
US10766171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2014 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Aug 28, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2007/005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Particular embodiments of the invention include apparatus and methods for compensating for shrinkage of a polymeric material in a mold during curing operations. Embodiments of the method include providing a mold comprising a molding cavity defining an interior mold volume separated from an exterior environment and introducing a volume of polymeric material into the molding cavity. Such methods further include impeding the development of a void in the volume of polymeric material by, either: isolating the volume of polymeric material within the molding cavity from the exterior environment, or reducing the interior mold volume of the molding cavity to at least substantially consume a volume of polymeric material shrinkage. Such methods further include curing the polymeric material to form a molded polymeric form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.