B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/08 (2006.01) B29C 47/06 (2006.01) B32B 7/02 (2006.01) B32B 27/18 (2006.01) B32B 27/36 (2006.01) E04C 2/10 (2006.01) E04C 2/54 (2006.01)
Patent
CA 2262543
A multilayered transparent amorphous thermoplastic plate with at least one central layer and at least one outer layer which are mainly composed of crystallizable thermoplastic. The thermoplastic of the central layer has a higher standard viscosity than the outer layer. The invention also relates to a method of manufacture for the above-mentioned plate as well as to its use. According to the invention the plate can also contain at least one additive such as ultra violet stabilizers, antioxidant agents and/or one anti-scratch coating on at least one side.
L'invention concerne une plaque multicouche transparente amorphe comprenant au moins une couche centrale et au moins une couche de recouvrement qui contiennent comme principal constituant un thermoplastique cristallisable. Le thermoplastique de la couche centrale présente une plus grande viscosité standard que celui de la couche de recouvrement. L'invention concerne en outre un procédé permettant de produire ladite plaque et son utilisation. La plaque obtenue selon l'invention peut également contenir au moins un additif tel que des antiultraviolets et des antioxydants et/ou être munie au moins sur une face d'un revêtement résistant aux éraflures.
Brunow Rainer
Murschall Ursula
Aventis Research & Technologies Gmbh & Co. Kg
Fetherstonhaugh & Co.
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