Continuous process and apparatus for randomly coloring pile fabr

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning

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8 14, 8 21R, D06P 512

Patent

active

041893026

ABSTRACT:
A continuous process and apparatus for randomly coloring a pile fabric material includes pretreating the fabric to be dyed with a wetting agent, conveying the pretreated fabric continuously through a series of operating stations including a gum applicator for application of a viscous gum coating and thereafter to a roll dye applicator for application of a first dye color which penetrates the gum coating prior to being set. The first dye color is of a relatively low viscosity, much lower than that of the gum, to allow said dye color to overrun the tips of the yarn. The tips of the yarn remain relatively undyed by the first dye color which settles mostly at the lower base position of the carpet yarn.
For application of additional dye colors, additional successive dye applicators may be used. In such event the dye colors applied are different viscosities. The first applied dye color is preferably of a viscosity greater than that of the second applied dye color and may be included within the gum. The first applied dye thus shields the tips of the yarn from the second applied dye which penetrates the gum coating and runs down and around the tips of the yarn. Thus, the base portions of the yarns of the fabric are dyed by the second applied dye color, and the first applied dye color serves to dye the tips of the yarn after the fabric is conveyed to a steamer where the gum is dissolved. A third color may be applied by predyeing the face yarn in a pad applicator prior to application of the gum coating. By preselecting the number of applicators and the viscosities of the dyes, selected blending of dyes may be effected to achieve multiple color effects.

REFERENCES:
patent: 997101 (1911-07-01), Swenning
patent: 1053429 (1913-02-01), Newcombe
patent: 2367730 (1945-01-01), Masland
patent: 2785081 (1957-03-01), Babiarz et al.
patent: 3468694 (1969-09-01), Moutz et al.
patent: 3683649 (1972-08-01), Tabrita et al.
patent: 4010709 (1977-03-01), Sayman et al.

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