Apparatus for making bag material
US4812074A · kind A · utility
118Cited by
17References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Jun 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1015
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus is disclosed for making bag material having a bag wall sheet or film folded to provide a closed folded top for each bag, a zipper strip having a web being nested within the bag top fold and having the margins of the web carrying recloseable zipper profiles, and at least one of the margins remaining unattached relative to the bag wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.