Method for molding foamed material
US12185788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Nov 7, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/504
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for forming a molded foam article. An example method may include molding a plurality of separate pieces of closed-cell foam by exposure to a temperature cycle within a sealed mold to soften the plurality of pieces sufficiently for physical bonding; and forming a molded foam article with the pieces bonded together without an adhesive, wherein, during the temperature cycle, the mold is unsealed at least once to release gases and/or pressure. In another example, a method includes exposing a filled, sealed mold filled with a plurality of pieces of foamed material to a heating cycle; at a threshold temperature, unsealing the filled, sealed mold until a pressure reduces to within a threshold of atmospheric pressure; and, following the unsealing, cooling the filled mold prior to removing a molded foam article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.