Viscose fiber cone yarn low-bath ratio dyeing method

Abstract

The invention discloses a viscose fiber cone yarn low-bath ratio dyeing method which is characterized in that a cone yarn with a density of 0.30-0.53 g / cm3 is adopted to be dyed in a dyeing machine according to an acidic degreasing process; a main pump circulation way of the dyeing machine is unidirectional operation of dye liquor from the inside of the cone yarn to the outside of the cone yarn, and the pressure difference between the dye liquor inside and outside the cone year is controlled to be between 1.0 bar and 3.0 bar. The viscose fiber cone yarn low-bath ratio dyeing method mainly solves the relevant problems of density, pressure difference, acidity and alkalinity in the cone yarn dyeing process, thereby meeting the process requirements of 1:3 ultra-low-bath ratio dyeing.

Description

technical field

[0001] The invention belongs to a viscose cheese dyeing method, in particular to a viscose fiber cheese dyeing method with a low liquor ratio. Background technique

[0002] Bath ratio is a term used in textile dyeing and finishing, which refers to the ratio of exhaust dyed fabric to dye liquor. Liquor ratio is one of the three elements of the dyeing process. The size of the liquor ratio affects the amount of water used and the amount of dyes and auxiliaries. With the increase of the liquor ratio, the consumption of water, steam, electricity, dyes, and auxiliaries per ton of yarn How to reasonably control the bath ratio and reduce the bath ratio is one of the main ways to save energy and reduce emissions.

[0003] Yarn dyeing liquor ratio is divided into three categories, 1:8 or more is a large liquor ratio, 1:5-6 is a low liquor ratio, and 1:4 or less is an ultra-low liquor ratio. At present, the dyeing of viscose fiber (filament, staple fiber and other ray...