Heat tunnel for film shrinking
US7269929B2 · kind B2 · utility
43Cited by
21References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2006 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Jul 31, 2026 |
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. The 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.