Packaging for piece goods
US5184771A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | Jun 26, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D75/26
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention concerns an essentially hermetic wrapping, in particular a tubular pouch wrapping, comprising two strip-like edge zones of the wrap material that are joined together by sealing, and two incisions 4, 18, 24, 28 are present in at least one of the two said edge zones, the wrap material forming a grip tab between said two incisions by means of which a tear-open region is pulled off when the wrapping is being opened. When a multi-layer wrap material is used of which the layers are selected from the series: paper, unstretched polyolefin foil or layer, aluminum foil, biaxially stretched polypropylene foil, biaxially stretched polyamide foil, biaxially stretched polyethleneterphthalate foil and a sub-assembly of two or three layers of the above materials bonded together with high peel strength, wherein this series the layers of material cited earlier always are nearer the wrapped good than those cited later, then when the wrappings are opened, starting from the incisions 4, 18, 24, 28, the wrap material tears along two approximately mutually parallel lines 8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.