Laminated film for forming an easily openable tightly sealed bag
US5141795A · kind A · utility
31Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1991 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Jul 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A laminate film for forming a tightly sealed bag that can be opened easily by tearing at an edge thereof. The film is a laminate of a substrate layer and a heat seal layer, the substrate layer having a multiplicity of through cuts formed therein, said through cuts being partially or wholly filled by the heat seal layer material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.