Process for the preparation of composite coatings with...

Details Process for the preparation of composite coatings with... Process for the preparation of composite coatings with...

B - Operations, Transporting

32

B

B32B 5/14 (2006.01) B05B 5/00 (2006.01) B05C 5/02 (2006.01) B05D 1/26 (2006.01) B29C 47/36 (2006.01)

Patent

CA 2202996

Composite coatings are provided having a variable thickness and a coloration gradient in the cross-web direction using shims to direct flow in a premetered extrusion process and an edge band is used to provide stability to the bead. Further stability is provided by a vacuum gradient matched to the specific shim design used. The composite coatings are useful in preparing laminated structures such as automobile windshields with a gradient band.

L'invention concerne des revêtements composites présentant en sens transversal une épaisseur variable et un gradient de coloration. Des cales sont utilisées pour diriger le flux dans un processus d'extrusion pré-dosée, et une bande de rive sert à conférer de la stabilité au produit extrudé. Un gradient de vide adapté à la configuration de cale spécifique utilisée permet une stabilité accrue. Ces revêtements composites sont utiles pour préparer des structures feuilletées telles que des pare-brise d'automobiles à bande de gradient.

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