Embossed foam in bag cushions
US5765688A · kind A · utility
29Cited by
20References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Nov 25, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/1075
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for preparing a defined foam cushion for packaging purposes comprises placing a foamable composition into a plastic bag, maintaining the bag in an orientation that provides the bag with a defined solid geometry while the foamable composition expands into foam, and embossing at least one surface of the defined geometry bag after the foam has substantially finished expanding but has not completely hardened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.