Wrapping device
US5839832A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | May 7, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/3453
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A wrapping device having a laminate film is disclosed. The laminate film includes at least a pair of outer layer and inner layer comprising synthetic resin layers non-heat-fusible relative to each other, a bonded portion through which the outer layer and the inner layer are bonded to each other by bonding means and a non-bonded portion where the outer layer and the inner layer are separated from each other. A communicating passage is formed at the non-bonded portion by the inner and outer layers. A communicating construction is provided to the inner layer at the non-bonded portion, the construction allowing communication between space facing the inner layer and the communicating passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.