Easy to open zipper tape, and packaging bag with easy to open zipper tape
US9085393B2 · kind B2 · utility
2Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2010 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D33/2533
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A connecting portion is provided between a first thick portion and a second thick portion in a cutting portion. Further, a thinnest portion on which a stress can be concentrated is provided to the connecting portion. Accordingly, when tearing a base material film of a bag body, the connecting portion can guide a cutting line toward the thinnest portion to position the cutting line in the thinnest portion, so that the bag body can be easily opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.