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Hemp cheese and reactive dye dyeing method thereof

A technology for reactive dyes and cheese, applied in the field of dyeing and finishing, can solve the problems of increased contact between dyes and hemp cheese, aggravated hydrolysis, uneven dyeing, etc., and achieves easy promotion and industrialization, salt content and dye content. Low, simple water treatment effect

Pending Publication Date: 2022-07-15
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, because most of the water is adsorbed on the hemp cheese yarn, the chances of the dye and the hemp cheese yarn contacting increase, and the dyeing is too fast, which is prone to uneven dyeing.
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

[0060] Example 1, preparation of black hemp cheese.

[0061] Hemp cheese to be dyed: 21 high-grade hemp cheese.

[0062] Hemp cheese yarn to be dyed: 288kg.

[0063] Dye Recipe:

[0064] Active black G: 5% (owf.);

[0065] Chemical dye water: 40% (owf.).

[0066] Lye recipe:

[0067] Soda ash: 15% (owf.);

[0068] Alkali water: 60% (owf.).

[0069] Dyeing process and parameters

[0070] 11. Weighing and chemicals.

[0071] 12. Squeeze water before dyeing, put the scouring and squeezed hemp cheese into a special dyeing vat for hemp cheese in non-aqueous medium. When squeezing water, the pressure is 0.2MPa, and the moisture content of the hemp cheese after squeezing is 120%. (owf.). Among them, in this embodiment, unless otherwise specified, the special dyeing vat for non-aqueous medium hemp cheese can be referred to as a dyeing vat for short.

[0072] 13. Add non-aqueous medium and put the non-aqueous medium into the dye vat. At this time, the mass ratio of hemp chees...

Embodiment 2

[0085] Example 2, navy blue hemp cheese.

[0086] Hemp cheese to be dyed: 32 high-grade hemp cheese.

[0087] Mass of hemp cheese yarn to be dyed: 288kg.

[0088] Dye Recipe:

[0089] Active navy L-3G: 3% (owf.);

[0090] Chemical dye water: 30% (owf.).

[0091] Lye recipe:

[0092] Soda ash: 10% (owf.);

[0093] Alkali water: 50% (owf.).

[0094] Dyeing process and parameters

[0095] 21. Weighing and chemicals.

[0096] 22. Squeeze water before dyeing, put the scouring and squeezed hemp cheese into a special dyeing vat for hemp cheese in non-aqueous medium. When squeezing water, the pressure is 0.4MPa, and the moisture content of the hemp cheese after squeezing is 80%. (owf.). Among them, in this embodiment, unless otherwise specified, the special dyeing vat for non-aqueous medium hemp cheese can be referred to as a dyeing vat for short.

[0097] 23. Add non-aqueous medium and put the non-aqueous medium into the dye vat. At this time, the mass ratio of hemp cheese ...

Embodiment 3

[0110] Example 3, red hemp cheese.

[0111] Hemp cheese to be dyed: 32 high-grade hemp cheese.

[0112] Mass of hemp cheese yarn to be dyed: 288kg.

[0113] Dyeing Recipe:

[0114] Reactive Red L-S: 0.5% (owf.);

[0115] Chemical dye water: 10% (owf.).

[0116] Lye recipe:

[0117] Soda ash: 5% (owf.);

[0118] Alkali water: 30% (owf.).

[0119] Dyeing process and parameters

[0120] 31 Weighing and chemical materials.

[0121] 32 Put the scouring and water-pressed hemp cheese into a special dyeing vat for non-aqueous medium hemp cheese. When water is pressed, the pressure is 0.4MPa, and the water content of the hemp cheese after water is 90% (owf.). Among them, in this embodiment, unless otherwise specified, the special dyeing vat for non-aqueous medium hemp cheese can be referred to as a dyeing vat for short.

[0122] 33. Add non-aqueous medium and put the non-aqueous medium into the dye vat. At this time, the ratio of hemp cheese yarn to non-aqueous medium is 1:4. ...

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Abstract

The invention relates to the technical field of dyeing and finishing, in particular to linen cheese and a reactive dye dyeing method thereof. The linen cheese is dyed by reactive dye, the soaping fastness of dyeing of the linen cheese under the national standard GB / T 3921-2008 is grade 4-5, the dry rubbing fastness of dyeing of the linen cheese under the national standard GB / T 3920-2008 is grade 4-5, the wet rubbing fastness of dyeing of the linen cheese under the national standard GB / T 4841.7-2006 is grade 3-4, and the color depth of dyeing of the linen cheese 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 hemp bobbin and a dyeing method for reactive dye yarn. Background technique [0002] At present, the main dyeing method for reactive dyeing of hemp cheese yarn is the dyeing tank water bath dyeing method. The dyeing water bath ratio of the dyeing method is large, the dyeing rate and the color fixing rate are not high, and the dye utilization rate is about 60%. In addition, a large part of the dyes cannot be fixed to the hemp fiber, and it needs to be washed with a large amount of water to wash this part of the dyes to meet the fastness requirements. The dyeing method wastes water resources and pollutes the water environment. In addition, in the dyeing process of the dyeing method, a large amount of salt needs to be added to promote dyeing, a large amount of dyes and salts exist in the wastewater, the wastewater treatment is difficult, and the wastewater reuse rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/58D06P1/38D06P1/92
CPCD06P3/58D06P1/38D06P1/922D06P1/928
Inventor 陈文淼詹磊刘今强王际平
Owner HAINING GREEN UNIVERSE TEXTILE TECH CO LTD
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