Method and apparatus for making foam-in-place cushions with selective distribution of foam
US7607911B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Aug 30, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C44/60
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for making a foam-in-place cushion in which a foam-forming composition is dispensed between two plastic film portions in a predetermined fashion to selectively control the distribution of the foam in the cushion. A foam dispenser can be moved in a transverse direction as foam is dispensed. A dispersion device can be employed to apply pressure on predetermined areas of the film portions towards each other so as to cause the composition to be redistributed in position in a predetermined manner while the composition is in a less than fully expanded state. The plastic film can then be sealed closed to form an expanding foam cushion that can be placed into a shipping carton where the cushion expands to fill void space, or into a mold where the cushion expands and is molded into a desired shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.