Heat tunnel for film shrinking
US7155876B2 · kind B2 · utility
54Cited by
13References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2003 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Oct 7, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A heat tunnel for applying heated air to articles enclosed in shrink-wrap film includes at least one air supply unit; a conveyor; and a heat shroud spaced from the conveyor. Tha air supply unit includes a source of heated air, a fan, a heated air plenum, air ducts, and a return air plenum. Multiple air supply units can be provided along the conveyor to create a heat tunnel of desired length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.