Energy saving greenhouse screen
AssigneeAB Ludvig Svensson
InventorsPer Holgerson, Daniel Asplund
Life of this patent
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Abstract
A greenhouse screen strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product, wherein at least some of the strips comprise a film material in the form of a single- or multilayer polyester film is disclosed. The film material has a transparency of at least 93.5% and is provided with at least a first anti-reflective coating or layer on a first side of the film material.
Claims17
A greenhouse screen comprising strips of film material that are interconnected by a yarn system of transverse threads and longitudinal threads by means of knitting, warp-knitting or weaving process to form a continuous product, and at least some of said strips comprise an anti-reflective film material in the form of a single- or multilayer polyester film provided with a first anti-reflective coating on a first side of the single- or multilayer polyester film and a second anti-reflective coating or an anti-reflective layer on a second side of the single- or multilayer polyester film, said anti-reflective film material in the form of a single- or multilayer polyester film has a total thickness of at least 10 micrometers and at the most 40 micrometers, a transparency of at least 93.5%, wherein each of said anti-reflective coating(s) have a refractive index at a wavelength of 589 nm that lies below 1.64, and said anti-reflective layer has a refractive index at a wavelength of 589 nm that lies below 1.64 when measured in the machine direction (MD).
Dependencies are inferred from the claim text.