Zipper for reclosable thermoplastic bag, process and apparatus for making
US5140727A · kind A · utility
137Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1991 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Apr 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/45168
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A zipper for a reclosable thermoplastic bag which produces an audible clicking sound and/or a vibratory or bumpy feel when closed or "zipped", and processes and apparatus for making such zippers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.