Pouch opening feature and method for making the same
US8230664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | May 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/15
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A flexible packaging structure has built-in opening features in a laminate with a first structure adhesively joined to a second structure. A tear area is formed by laser ablation of the laminate along a junction between the first and second portions preferably prior to assembling the laminate into the package. Laser ablation begins at the center of the tear area and progressively moves the laser in a direction radially outward from the center of the tear area. During assembly of the package, a seal is formed between end portions of the first and second portions of the laminate. A score line and a sealant reduction area are also introduced to the package to facilitate opening. The package is opened by pulling the seal near the tear area in a direction along the score line until the contents of the package are accessible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.