Packing container provided with tear-up opening arrangement
US4410128A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1981 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Jan 16, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1051
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tear-up opening arrangement for a packing container which is manufactured from a plane packing material web by folding is disclosed. The packing material is pierced through along a cut line which is situated alongside or in the vicinity of a base line of a sealing fin projecting from the packing container. The cut line is covered along the inside of the packing container by a thin, molecular-oriented plastic strip whose direction of orientation coincides with the extension of the cut line. The cut line has two end portions extending on either side of the apex of a triangular lug of the container and a center portion extending parallel to, but at a distance from, a line through the apex and the end portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.