Title:
DYEING METHOD AND APPARATUS FOR KERATINOUS FIBER
Document Type and Number:
Japanese Patent JPS55128064
Kind Code:
A
Abstract:
In dyeing keratinous fibres, such as wool, by impregnating the fibres with aqueous compositions containing dyes, followed by storage in the moist condition, a higher level of fixation, enabling heavier shades to be obtained with cheaper dyes, can be achieved by raising the temperature of the stored fibres by means of radio frequency heating. The storage temperature is preferably between 40 DEG and 80 DEG C., which usually requires about 0.05 kw hour/kg fibres. Acid, milling, chrome and premetallized dyes can be used, as well as reactive dyes and substantive optical brighteners. The fibres are cuttled into an insulated plastics material cart located between a pair of electrodes in an r.f. chamber. One electrode is fixed and the other is adjustable so that the r.f. load acting on the fibres may be set at a desired value.
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Inventors:
JIYON FUOSUTAA GURAHAMU
RICHIYAADO ROBAATO DEIMOTSUKU
RICHIYAADO ROBAATO DEIMOTSUKU
Application Number:
JP3603280A
Publication Date:
October 03, 1980
Filing Date:
March 21, 1980
Export Citation:
Assignee:
WOOL DEV INT
International Classes:
D06B17/04; D06B1/00; D06B19/00; D06P5/20; (IPC1-7): D06B1/00