Closure for post filling application to packaging
US5211482A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Aug 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S24/50
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A zipper closure strip for attachment to the top of a formed, filled and sealed package is provided. The zipper strip has a pair of interlocking profile members that extend from bowed webs which conform generally to the cross section of the top of the filled package. The strip may thus straddle the top of the package, gable fashion, and be bonded to the top of the package by heat seals, adhesive or the like. A slider seats on the profile members for urging them into engagement or forcing them apart. A blade protrudes through the slider from a plunger to enable the film at the top of the package beneath the closure strip to be slit. The zipper may be cuffed to expose the top end of the package to facilitate opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.