Method of liquid treatment of textile fiber material
OwnerFritz Karrerinventor
Life of this patent
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Abstract
Textile fiber material is dyed particularly quickly, uniformly, and gently by evacuating it unitl dry in a treatment vat, whereupon the dyeing liquor is introduced into the vat, avoiding any initial condensation in the fibrous material. This is achieved by introducing the dyeing liquor at a low temperature in harmony with the vacuum or by preheating the fibrous material to the necessary degree. After having been introduced, the dyeing liquor is subjected to slight excess pressure and caused to act on the fibrous material which, subsequently, is dried in the vat.
Claims12
A method of liquid treatment of textile fiber material or the like, in particular of dyeing yarn, loose material, or textile pieces, with which the fibrous material is put into a vat, the vat is evacuated until dry, the treatment liquid is introduced into the vat, the treatment liquid is caused to act on the fibrous material for a certain period of time, the treatment liquid is withdrawn from the vat, and the fibrous material is dried in the vat, if desired, after rinsing, characterized in that the liquid is introduced into the vat under vacuum conditions, and prior to introducing the treatment liquid into the vat the temperatures of the fibrous material and of the treatment liquid as well as the pressure inside the vat are harmonized so that substantially no evaporating liquid will condense in or on the fibrous material as the treatment liquid is introduced.
A method of liquid treatment of textile fiber material or the like, in particular of dyeing yarn, loose material, or textile pieces, with which the fibrous material is put into a vat, the vat is evacuated until dry, the treatment liquid is introduced into the vat, the treatment liquid is caused to act on the fibrous material for a certain period of time, the treatment liquid is withdrawn from the vat, and the fibrous material is dried in the vat, if desired, after rinsing, characterized in that prior to introducing the treatment liquid into the vat the temperatures of the fibrous material and of the treatment liquid as well as the pressure inside the vat are harmonized by preheating the fibrous material in the vat prior to introducing the treatment liquid to such degree that no vapor will condense on the same, or by introducing the treatment liquid into the evacuated vat at a low temperature which is below the evaporating temperature corresponding to the reduced pressure in the vat.
Dependencies are inferred from the claim text.