Plastic film
AssigneeSumitomo Chemical Company, Limited
InventorsNobuo Fukushima, Shuji Kitamura, Kiyohiko Nakae, Kozo Kotani, Takayuki Terazawa, Toyoaki Nakarai
Life of this patent
Estimating the term…
Abstract
An infrared radiation absorbing film suitable for agricultural purposes comprising a first layer of olefin resin containing an amorphous hydrated aluminosilicate gel and optionally, additional layers of an olefin resin encompassing said first layer.
Claims8
An infrared radiation absorbing film comprising a layer of 100 weight parts of an olefin resin (A) and 2 to 25 weight parts of an amorphous hydrated aluminosilicate gel (B) and at least one other layer of at least one resin selected from the group consisting of ionomer resins (C) and olefin resins (D) being on the inner and outer surfaces of the layer,
- wherein the amorphous hydrated aluminosilicate gel and olefin resin (A) in the layer have a ratio of refractive index n.sub.A of the olefin resin (A) to refractive index n.sub.B of the amorphous hydrated aluminosilicate gel, (n.sub.A /n.sub.B), within the range of from 0.99 to 1.02, and the amorphous hydrated aluminosilicate gel has the following composition:
- (SiO.sub.2).sub.x.(Al.sub.2 O.sub.3).sub.y.(M.sub.2 O).sub.x.n H.sub.2 O
- wherein M represents an alkali metal, 0.14.ltoreq.y/x.ltoreq.0.33, 0.2.ltoreq.z/y.ltoreq.1.6, and n is zero or a positive number.
Dependencies are inferred from the claim text.