Hinged flexible polyurethane foam protective packaging and shipping element
US6508362B2 · kind B2 · utility
15Cited by
17References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2000 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Dec 13, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/107
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hinged flexible polyurethane foam protective packaging element is formed from a flexible polyurethane foam laminated to a polyethylene, polypropylene or urethane film. The flexible polyurethane foam has a density in the range of 0.7 lbs/ft3 to 2.8 lbs/ft3 and IFD25 in the range of 25 lbs to 270 lbs. The film has a thickness from 2 mil to 125 mil. The foam is cut through all or substantially all of its thickness without cutting through a portion of the film. The uncut portion of the film creates a repeatably bendable hinge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.