B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/08 (2006.01) B29C 47/06 (2006.01) B32B 27/18 (2006.01) B32B 27/20 (2006.01) E04C 2/20 (2006.01) E04C 2/54 (2006.01)
Patent
CA 2261716
A multilayered, transparent coloured amorphous plate with 1 to 20 mm thickness contains a crystallising thermoplastic material as its main component and a dye which is soluble in the thermoplastic material. The plate consists of at least one covering layer and at least one core layer, the standard viscosity of the thermoplastic material of which the core layer is made being higher than that of the thermoplastic material of the adjacent covering layer(s).
L'invention concerne une plaque amorphe monochrome transparente à couches multiples d'une épaisseur comprise entre 1 et 20 mm, qui contient comme principal constituant une matière thermoplastique cristallisable et au moins un colorant soluble dans la matière plastique. Cette plaque comprend une couche de revêtement et au moins une couche médiane. La viscosité standard de la matière thermoplastique de la couche médiane est supérieure à celle de la matière thermoplastique constituant la(les) couche(s) de revêtement adjacente(s).
Brunow Rainer
Murschall Ursula
Aventis Research & Technologies Gmbh & Co. Kg
Fetherstonhaugh & Co.
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