Regenerated cellulose fiber cheese and reactive dye dyeing method thereof

A technology of regenerated cellulose and reactive dyes, which is applied in the field of dyeing and finishing, can solve the problems of increased contact opportunities, intensified hydrolysis, and fast dyeing, etc., and achieves the goals of reducing material costs, easy promotion and industrialization, and reducing washing times Effect

Pending Publication Date: 2022-05-03
HAINING GREEN UNIVERSE TEXTILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, since most of the water is adsorbed on the regenerated cellulose fiber cheese, the chances of the dye being in contact with the regenerated cellulose fiber cheese increase, the dyeing is too fast, and uneven dyeing is prone to occur.
Moreover, the feeding method of this scheme will cause the local pH in the dyeing bath to rise sharply, causing the hydrolysis of the dye to intensify under the condition of high pH value, and at the same time, it will also make the reaction speed of the local dye and the fiber too fast, thus resulting in poor dyeing. Uniform phenomenon, in non-aqueous medium dyeing, less water consumption, this phenomenon will be more obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1, prepare black viscose cheese.

[0062] Viscose cheeses to be dyed: 40 viscose cheeses.

[0063] Viscose cheese to be dyed: 288kg.

[0064] Dye formula:

[0065] Reactive Black G: 5% (owf.);

[0066] Chemical dye water: 40% (owf.).

[0067] Lye recipe:

[0068] Soda ash: 15% (owf.);

[0069] Alkali water: 60% (owf.).

[0070] Dyeing process and parameters

[0071] 11. Weighing and chemical materials.

[0072] 12. Squeeze water before dyeing, put the viscose cheese after scouring and squeezing into the special dyeing vat for non-aqueous medium regenerated cellulose fiber cheese. The moisture content is 200% (owf.). Wherein, in this embodiment, unless otherwise specified, the special dyeing vat for non-aqueous medium regenerated cellulose fiber cheese can be simply referred to as dyeing vat.

[0073] 13. Add non-aqueous medium, put the non-aqueous medium into the dye vat, at this time, the mass ratio of viscose cheese and non-aqueous medium is 1:3. ...

Embodiment 2

[0086] Embodiment 2, navy blue tencel cheese.

[0087] Tencel packages to be dyed: 32 Tencel packages.

[0088] Mass of Tencel package yarn to be dyed: 288kg.

[0089] Dye formula:

[0090] Active navy blue L-3G: 3% (owf.);

[0091] Chemical dye water: 30% (owf.).

[0092] Lye recipe:

[0093] Soda ash: 10% (owf.);

[0094] Alkali water: 50% (owf.).

[0095] Dyeing process and parameters

[0096] 21. Weighing and chemical materials.

[0097] 22. Squeeze water before dyeing, put the Tencel package yarn after scouring and squeezing water into the non-aqueous medium regenerated cellulose fiber package special dyeing vat, when squeezing water, pressurize the pressure at 0.3MPa, and the Tencel package yarn will contain water after squeezing water The rate is 180% (owf.). Wherein, in this embodiment, unless otherwise specified, the special dyeing vat for non-aqueous medium regenerated cellulose fiber cheese can be simply referred to as dyeing vat.

[0098] 23. Add non-aque...

Embodiment 3

[0111] Embodiment 3, red bamboo fiber cheese.

[0112] Bamboo fiber cheeses to be dyed: 40 bamboo fiber cheeses.

[0113] The quality of the bamboo fiber package yarn to be dyed: 288kg.

[0114] Dye formula:

[0115] Reactive Red L-S: 0.5% (owf.);

[0116] Chemical dye water: 10% (owf.).

[0117] Lye recipe:

[0118] Soda ash: 5% (owf.);

[0119] Alkali water: 30% (owf.).

[0120] Dyeing process and parameters

[0121] 31 weighing materials and chemical materials.

[0122] 32 Put the bamboo fiber cheese yarn after scouring and water extraction into the special dyeing vat of non-aqueous medium regenerated cellulose fiber cheese yarn, during water extraction, the pressurized pressure is 0.4MPa, and the bamboo fiber cheese yarn moisture content after water extraction is 130% ( owf.). Wherein, in this embodiment, unless otherwise specified, the special dyeing vat for non-aqueous medium regenerated cellulose fiber cheese can be simply referred to as dyeing vat.

[0123] 3...

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Abstract

The invention relates to the technical field of dyeing and finishing, in particular to regenerated cellulose fiber cheese and a reactive dye dyeing method thereof. The regenerated cellulose fiber cheese is dyed by reactive dye, the soaping fastness of dyeing of the regenerated cellulose fiber cheese under the national standard GB/T 3921-2008 is grade 4-5, the dry rubbing fastness under the national standard GB/T 3920-2008 is grade 4-5, the wet rubbing fastness is grade 3-4, and the color depth under the national standard GB/T 4841.7-2006 can reach 2/1 standard depth.

Description

technical field [0001] The invention relates to the technical field of dyeing and finishing, in particular to a regenerated cellulose fiber cheese and a reactive dye dyeing method thereof. Background technique [0002] Regenerated cellulose fiber is made of natural cellulose (cotton, hemp, bamboo, tree, shrub, etc.), without changing its chemical structure, but only changing the physical structure of natural cellulose, so as to produce fibers with better performance. Common regenerated cellulose fibers include viscose, tencel, modal, bamboo fiber, cupro fiber, etc. [0003] At present, the main dyeing method for reactive dyeing of regenerated cellulose fiber cheese is dyeing bath water bath dyeing method. The dyeing water-bath ratio of the dyeing method is large, the dye uptake rate and color fixation rate are not high, and the dyestuff utilization rate is about 70%. Moreover, a large part of the dyestuff fails to be fixed on the regenerated cellulose fiber, and it needs t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/66D06P1/38D06P1/92
CPCD06P3/66D06P1/38D06P1/0032D06P1/926D06P1/928
Inventor 沈吉芳陈文淼程文青詹磊刘今强王际平
Owner HAINING GREEN UNIVERSE TEXTILE TECH CO LTD
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