D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
D06P 3/52 (2006.01) D06P 1/651 (2006.01) D06P 1/92 (2006.01)
Patent
CA 2120136
A method of dyeing film of polyethylene terephthalate wherein the film (1) is immersed in a dye bath (15) or solvent or dispersion dyes, dissolved or dispersed or both in a carrier consisting of glycerol triacetate, the dye bath (15) being heated so the film (11) is raised to the glass transition temperature of the film (11), and the dye and carrier are absorbed into the film (11). The dye and carrier are removed from the surface of the film (11) by a washing bath (18), and the film (11) is then heated (20) to remove the carrier absorbed in the film (11) without depreciating the dyestuff or the film (11).
Le procédé de teinture d'un film de térèphthalate de polyéthylène consiste à immerger le film (11) dans un bain colorant (15) de colorants de type à solvant ou dispersion, dissous ou dispersé ou les deux dans un milieu porteur consistant en du triacétate de glycérol, le bain colorant (15) étant chauffé afin que le film (11) soit porté à sa température de transition du verre, et le colorant et le milieu porteur sont absorbés par le film (11). Le colorant et le milieu porteur sont éliminés de la surface du film (11) à l'aide d'un bain de lavage (18), puis le film (11) est chauffé (20) pour éliminer le porteur absorbé dans le film (11) sans dépréciation du colorant ou du film (11).
Acquired Technology Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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