Apparatus and method for forming inflated articles
US7389626B2 · kind B2 · utility
17Cited by
89References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2007 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Apr 4, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7138
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for making inflated articles from a film web having two juxtaposed film plies. One version of the apparatus generally includes a first rotary sealing device for producing transverse seals that bond the film plies together, an inflation assembly for directing gas between the film plies, and a second rotary sealing device for producing a longitudinal seal between the film plies. The longitudinal seal intersects the transverse seals so that the gas is enclosed between the longitudinal seal, transverse seals, and film plies to thereby form an inflated article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.