Agricultural barrier films having superior tear strength properties
US7662463B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
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Inventor
Key dates
| Filing date | Aug 17, 2007 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Aug 17, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3175
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A mulch barrier film having, for example, a methyl bromide permeability of less than about 15 g/m2-hr and machine direction Elmendorf tear strength of at least about 75 gf. The mulch barrier film is an extruded, cast, and preferably embossed, multilayer film having at least one polyolefin layer and at least one polyamide layer. The combination of the film structure and the casting process achieves a barrier film that has low permeability to volatile soil treatment chemicals, such as methyl bromide, and superior tear strength properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.