Method and apparatus of producing sheet wrapping body
US5740661A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 22, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | May 22, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a sheet wrapping body producing apparatus, an oxygen absorbing strip sheet supplied from an oxygen absorbing sheet supplying shaft is cut out by a first rotary die cut unit to make an oxygen absorbing sheet tip. The tip is transported in such a manner to prevent the misalignment by a delivery drum unit and a first transportation belt unit. During the transportation, a breathing layer strip sheet is supplied on a transporting surface of the first transportation belt unit, on which the oxygen absorbing sheet tip is placed. Also, a strip cover film is placed on the oxygen absorbing sheet tip. Then, a rotary seal unit seals the breathing layer strip sheet and strip cover film, and the sealed portion is cut by a second rotary die cut unit. Accordingly, a sheet wrapping body can be produced at high speeds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.