Plastic film product
US4543279A · kind A · utility
46Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1983 |
| Grant date | Sep 24, 1985 |
| Priority date | — |
| Expiry date | Mar 3, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24777
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A plastic film product, such as a sealed bag, wound film or adhesive tape, has a plurality of random scratches or cuts having notches toward the other side of the film, formed along the edges thereof so as to be shallow and small enough to be invisible to the naked eye in order to reduce resistance to tearing perpendicular to the edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.