Biaxially-oriented polyolefin multi-layer film which can be sealed on both sides, and the preparation and use of the same
US5151317A · kind A · utility
35Cited by
8References
20Claims
0Family size
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Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A five layer, biaxially-oriented polyolefin film, which is sealable on both exterior surfaces and includes a base layer of polypropylene which carries polyolefinic intermediate layers on both surfaces, and two sealing layers of sealable olefin polymers which are disposed, respectively, on the intermediate layers. The intermediate layers include 0.2-2.0% by weight of a polydialkylsiloxane having a viscosity of less than about 500 mm2/s. The film is particularly well-suited for the reception of aqueous printing inks or as a substrate for aqueous coating systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.