A solar control pigmented thermoplastic polymer sheet

B - Operations – Transporting – 29 – C

Patent

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B29C 47/06 (2006.01) B32B 5/16 (2006.01) B32B 27/20 (2006.01) B32B 33/00 (2006.01) F21V 9/06 (2006.01) G02B 5/20 (2006.01) B29C 47/10 (2006.01) B29C 51/00 (2006.01) B29C 51/14 (2006.01) F21S 11/00 (2006.01)

Patent

CA 2340132

A solar control light transmitting thermoplastic polymer sheet (30) is provided which contains flakes of metal pigment that are aligned coplanar with the upper face of the sheet. The sheet transmits a controlled amount of light while reflecting a significant amount and absorbing the rest. In an alternative embodiment, the sheet has a co-extruded second layer of UV- protective thermoplastic polymer (34), formed on top of the first layer (32). Metal pigment may be dispersed in the co-extruded layer of UV-protective thermoplastic polymer.

L'invention concerne une feuille polymère thermoplastique pigmentée (30) permettant le passage des rayons solaires et contenant des flocons de pigment métallique alignés coplanaires par rapport à la face supérieure de la feuille. Celle-ci transmet une quantité régulée de lumière en en réfléchissant une quantité considérable et en en absorbant le reste. Selon une variante, la feuille comporte une seconde couche co-extrudée de polymère thermoplastique (34) à écran UV formé sur la partie supérieure de la première couche (32). Le pigment métallique peut être dispersé dans la couche coextrudée de polymère thermoplastique à écran UV.

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