Apparatus for the shrinking of wrapping foils
US4330265A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1980 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Mar 19, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B53/066
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to apparatus for the shrinking of foil, which is wrapped around an article, and comprises a frame 1, which along its inner edge is provided with a means of heating. The apparatus is characterized by the frame 1 being hollow, that there are means for blowing air into the hollow part, and means in the form of slots or ports 27 and 28 for leading the air out along the inner edge of the frame 1 close to the means of heating. The means of heating can, for example, consist of gas burners 20 or electric heating elements. The frame 1 can be arranged to move up and down around the article around which the foil is to be shrunk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.