Reclosable plastic bags having improved lip sidewelds and method of making same
US5167454A · kind A · utility
41Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1991 |
| Grant date | Dec 1, 1992 |
| Priority date | — |
| Expiry date | May 31, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D33/007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A reclosable plastic bag including grip strips of a plurality of spaced apart ridges extending generally parallel to one another over the width of the bag on opposed lips of the bag, wherein the ridges are characterized in cross-section by a lower generally triangularly-shaped portion and by an upper bulbous portion defined generally at an apex of the lower generally triangularly-shaped portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.