Method and mold assembly for making a molded foam article
US7553437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2007 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Jul 1, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C44/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold assembly for making a molded foam article generally includes a housing having an internal cavity and an opening into the cavity, a movable support member movable between an inner position and an outer position, an object supported by the support member and having a three-dimensional shape, and a closure. A method for making a molded foam article generally includes moving the support member to the outer position, positioning a film web over the object to form a substantially convex envelopment, moving the support member to the inner position while maintaining the film web in contact with the object to reconfigure the substantially convex film envelopment into a partially concave film envelopment, and dispensing a predetermined amount of a foamable composition into the hollow space provided by the concave envelopment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.