US 12,108,717 B2
Greenhouse screen
Per Holgerson, Brämhult (SE); and Daniel Asplund, Landvetter (SE)
Assigned to AB Ludvig Svensson, Kinna (SE)
Appl. No. 16/644,312
Filed by AB LUDVIG SVENSSON, Kinna (SE)
PCT Filed Sep. 13, 2018, PCT No. PCT/EP2018/074773
§ 371(c)(1), (2) Date Mar. 4, 2020,
PCT Pub. No. WO2019/053139, PCT Pub. Date Mar. 21, 2019.
Claims priority of application No. 1751124-7 (SE), filed on Sep. 14, 2017.
Prior Publication US 2020/0205353 A1, Jul. 2, 2020
Int. Cl. A01G 9/14 (2006.01); B32B 7/09 (2019.01); B32B 27/08 (2006.01); B32B 27/18 (2006.01); B32B 27/36 (2006.01); C09D 5/00 (2006.01); C09D 133/12 (2006.01); D06M 15/263 (2006.01); D06M 15/507 (2006.01); D06M 15/643 (2006.01)
CPC A01G 9/1438 (2013.01) [B32B 7/09 (2019.01); B32B 27/08 (2013.01); B32B 27/18 (2013.01); B32B 27/36 (2013.01); C09D 5/00 (2013.01); C09D 5/006 (2013.01); C09D 133/12 (2013.01); D06M 15/263 (2013.01); D06M 15/507 (2013.01); D06M 15/643 (2013.01); A01G 2009/1461 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/412 (2013.01); B32B 2307/418 (2013.01); B32B 2307/518 (2013.01); B32B 2410/00 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of a knitting, warp-knitting or weaving process to form a continuous product, wherein at least some of the strips comprise a polyester film having a transparency of at least 93% as measured according to ASTM-D 1003-6 (method A), said polyester film having at least one base layer B comprising a thermoplastic polyester and a UV stabilizer, said polyester film has a first and a second surface, wherein an anti-fog coating is applied to at least one of the first or second surfaces of the polyester film, wherein said anti-fog coating is a dispersion composition and comprises
a) a hygroscopic, porous material;
b) a polymer-based crosslinker;
c) an adhesion-promoting organofunctional silane; and
d) one or more surfactants;
said anti-fog coating has a thickness of at least 60 nm and at the most 150 nm, and a refractive index of below 1.64 at a wavelength of 589 nm in the machine direction (MD) of the film, said refractive index being lower than the refractive index of base layer B.