Stretched plastic film for agricultural use

Details Stretched plastic film for agricultural use Stretched plastic film for agricultural use

A - Human Necessities

01

G

A01G 13/02 (2006.01) B29C 55/02 (2006.01) B29C 55/18 (2006.01)

Patent

CA 2253489

There is disclosed the provision of a plastic film for covering soil for use in cropping or covering a frame for greenhouse effect, wherein at least part of the film has been stretched beyond its yield point prior to application. In alternative forms, the film undergoes a secondary stretch to form a predetermined pattern of weakness in certain localised areas of the film. The film may be photodegradable and biologically degradable to accelerate decomposition of the film when exposed to the elements.

L'invention porte sur un film plastique de couverture du sol à utiliser à la mise en culture, ou à la couverture de châssis pour y produire l'effet de serre, au moins une partie dudit film ayant subi un étirage au delà de sa limite élastique avant application. Dans des variantes, le film subit un deuxième étirage de sorte qu'un motif prédéterminé de moindre résistance soit formé dans des zones localisées. Ledit film peut être photodégradable et biodégradable de manière que sa décomposition soit accélérée lorsqu'il est exposé aux éléments.

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