Vented plastic film and method of making
US8637134B1 · kind B1 · utility
10Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2010 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Aug 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24331
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Vented plastic stretch film and a method of making the film in which elongated reinforcement strips are applied to a base sheet, each reinforcement strip including a cord-like, reinforcement member formed from plastic film and a flat, narrow film strip covering the reinforcement member. Vent holes are formed from slits between the reinforcement members by applying tensional forces to the base sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.