AGRICULTURAL FILM OF FLUORINE RESIN AND GREENHOUSE Russian patent published in 2022 - IPC A01G9/14 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural film that can be used in a greenhouse with a high roof overhang. In agricultural film of fluorine resin, containing fluorine resin, one surface has roughness. The roughness has an arithmetic mean deviation of a profile Ra from 0.30 to 20 mcm and the maximum height of unevenness R_z from 1 to 8 mcm. The transmission coefficient at a wavelength from 300 to 800 nm is from 20 to 70%, and the transmission coefficient T₂ is equal to 75% or more. At the same time, the transmission coefficient T₂ is the transmission coefficient of laminate at a wavelength from 300 to 800 nm, obtained by lamination of resin film and tested film, in which the roughness of resin film is completely filled with water, and tested film with a thickness of 50 mcm, obtained from only ethylene-tetrafluoroethylene copolymer, and with a transmission coefficient at a wavelength from 300 to 800 nm of 94% and an arithmetic mean deviation of a profile Ra on both surfaces of 0.04 mcm is laminated to resin film.

EFFECT: use of the invention will allow for improvement of amount of transmitted light with simultaneous reduction in direct impact of sun light to agricultural crops.

10 cl, 17 ex, 2 tbl, 3 dwg