Inverted T-shaped endstops for reclosable package
US8424171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2007 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Mar 31, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/2598
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A length of flanged zipper material for reclosable packages or bags is provided with inverted T-shape endstops wherein the zipper profiles are crushed and the flanges are fused together. The reclosable packages or bags are separated at the mid-point of the inverted T-shaped endstops thereby forming L-shaped and reversed L-shaped endstops. The zipper flanges are fused together in the lower cross elements of the endstop thereby providing an area for the slider to be placed wherein the forces from distension of the package or bag walls are unlikely to exert forces to separate the slider from the zipper. This is particularly applicable to slider zippers wherein the flanges are attached to or substantially co-planar with the exterior sidewalls of the interlocking elements of the zipper profiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.