Polyolefin pre-stretched packaging film
US9981454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2010 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Sep 3, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/15
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention provides a polyolefin pre-stretched packaging film comprising perforations arranged in a series of columns along a longitudinal direction of the film, wherein each adjacent column of said perforations is separated by a column without perforations along the longitudinal direction, and the perforations are staggered in a transverse direction across the film, wherein said film comprises an inherent cling surface on at least one of its surfaces; wherein the perforations cover at least 25% of the total surface area of the film, and the film has an inside/inside cling property of 5 to 22 gr, and a weight of no more than 13 g/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.