WO2019136614A1

WO2019136614A1 - New method for dyeing silk

Info

Publication number: WO2019136614A1
Application number: PCT/CN2018/072013
Authority: WO
Inventors: 李玉清
Original assignee: 海安科皓纺织有限公司
Priority date: 2018-01-10
Filing date: 2018-01-10
Publication date: 2019-07-18

Abstract

Disclosed is a method for dyeing silk. The method comprises: A. preparation of a dyeing solution: the dyeing solution includes a dye solution and an auxiliary solution, which are respectively prepared by dissolving a material in soft water and uniformly stirring same according to the dyeing process requirements, and then stored in liquid storage tanks for use; B. delivery of the dyeing solution: the dye solution and the auxiliary solution are mixed at a ratio of 5:1 and delivered into a padding tank, with the temperature being 18℃-35℃; C. padding of the dyeing solution: a silk fabric is continuously and smoothly introduced into the padding tank to be immersed in the dyeing solution and absorb the dyeing solution, and is then wound up; and D. stacking: a silk fabric roll resulting from the winding, together with a spindle head, is immediately tightly cladded with a thin film, and is then stacked for 5-24 hours in a rotating state, with the rotation speed being 4-8 r/min, and the ambient temperature being 15℃-35℃. The method has the advantages of saving steam, saving auxiliaries, having a high dye utilization rate, less dyeing wastewater, and being environmentally friendly; and the dye permeability, uniformity, and flatness of the dyed fabric are all better when compared with conventional dyeing methods.

Description

New silk dyeing method

Technical field

The invention relates to a method for dyeing silk, in particular to a dyeing method for uniformly dyeing dyes by dyeing liquid at room temperature, winding, coating and stacking.

Background technique

The existing silk dyeing method adopts the dip dyeing method, and the bath ratio is generally between 1:10 and 1:50 (that is, 10 to 50 kg of water is required for 1 kg of the fabric), the fabric is immersed in the dyeing liquid, and the dyeing liquid is heated, and a lot of dyeing is added. High-temperature dyeing (generally 75 ° C ~ 95 ° C); the disadvantage is that it consumes a lot of steam, water and additives; and the dye utilization rate is low, the discharge of dyeing wastewater is large, and the environmental pollution is serious.

Summary of the invention

In order to overcome the technical defects existing in the prior art mentioned above, the object of the present invention is to provide a novel silk dyeing method which has less consumption of steam and water, greatly reduces the amount of dyeing auxiliary, high dye utilization rate, and dyeing quality. High, environmentally friendly and so on.

In order to achieve the above object, the technical solution of the present invention is as follows:

A novel silk dyeing method, which in turn comprises:

A. Dyeing liquid preparation: The dyeing liquid includes dye liquid and auxiliary liquid, the dye liquid and the auxiliary liquid are respectively softened and mixed according to the dyeing process requirements, and then stored in different liquid storage tanks for use;

B. dyeing liquid transportation: the dye liquid and the auxiliary liquid are mixed into the rolling liquid tank in a ratio of 5:1, and the temperature of the dyeing liquid is 18 to 35 ° C;

C. Dip-dyed dyeing liquid: The silk fabric is continuously and smoothly operated to absorb the dyeing liquid in the dyeing liquid immersed in the rolling liquid tank, and then pulled away from the dyeing liquid and passed through a pair of uniform rolls and then driven by the center driving roller on the winding frame. The roll is taken up and the winding tension is 10~200N; the pair of uniform rolls are pressed to the silk fabric, and the rolling rate is maintained at 70-110%;

D. Stacking: The silk fabric roll after winding is tightly coated with the film immediately with the shaft head, and then stacked for 5 to 24 hours in a rotating state, the rotation speed is 4-8 r/min, and the ambient temperature is 15 to 35 °C. To ensure that the dye liquor does not transfer due to gravity;

After that, you can proceed to the next finishing process.

Wherein, the silk fabric needs to be refined before entering the rolling liquid equipment, and requires: the gross effect is ≥8cm/30min; the PH value of the cloth surface is 6～7.8.

Wherein, the dye liquid is a reactive dye, the amount is from 1 to 250 g / l, and the rest is soft water;

The auxiliary solution comprises 0-30 g/l of penetrant, 0-100 g/l of cosolvent, 0-200 g/l of dyeing agent, 5-600 g/l of alkali agent, and the rest is soft water.

The invention has the beneficial effects that the dyeing method of the silk cold-rolled pile of the invention is that the dyeing liquid is immersed in the room temperature state, and the silk surface of the fabric only has 70-110% dyeing liquid (1 kg fabric contains 0.7-1.1 kg dyeing liquid). Winding, and then through the room temperature stacking to complete the dyeing process, so it has significant water saving (1kg fabric needs about 1kg water dyeing), steam saving, saving additives, high dye utilization, less dyeing wastewater, environmentally friendly advantages; The dyeability, uniformity, and flatness of the dyed fabric are better than conventional dyeing methods.

Detailed ways

The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

The silk cold-rolled pile dyeing method provided by the invention can be specifically refined into: dyeing liquid preparation - dyeing liquid transportation (while fabric preparation) - padding dyeing liquid - flat roll winding - coating - stacking - - finishing; where:

1. Dyeing liquid preparation: Dyeing liquid is dye liquid and other auxiliary liquid:

1), dye liquid: the content of reactive dye is 1 ~ 200g / l, the dye according to the amount required for dyeing with soft water, placed in a liquid storage tank for use.

2), auxiliary liquid: including penetrant 0 ~ 30g / l, cosolvent 0 ~ 100g / l, dyeing agent 0 ~ 200g / l, alkaline agent 5 ~ 500g / l, according to the requirements of the dyeing process required The soft hydrate is placed in another storage tank for use.

The penetrant is one or both of the penetrant JFC, the penetrants kF-101, and kF-102.

The cosolvent is one or both of urea and alcohol.

The dyeing agent is one or both of sodium chloride and sodium sulfate.

The alkaline agent is one or two or three kinds of a bubble base, sodium phosphate, sodium hydroxide, sodium hydrogencarbonate, sodium carbonate, potassium carbonate or an alkali generator.

2. Dyeing liquid transportation: the dye liquid and the auxiliary liquid are arranged and stirred in the respective liquid storage tanks according to the requirements of the process prescription, and the dye liquid and the auxiliary liquid are mixed and input and pressed in a ratio of 4:1 by a proportional pump. In the liquid tank, the liquid level sensor in the tank monitors the delivery amount of the dye liquor, and the temperature of the dye liquor in the liquid bath is maintained at a constant room temperature (15 to 35 ° C).

3. Fabric preparation: Refined silk fabrics require continuous and smooth entry into the equipment, where:

1) Thoroughly remove impurities such as sericin and slurry;

2) The tension of the cloth should be uniform;

3), the cloth surface should be dry and consistent;

4), good water absorption, hair effect ≥ 8cm / 30min;

5), cloth neutral (PH6 ~ 7.5);

6) Control the temperature and humidity before padding.

4. Dip pad dyeing: The fabric is immersed in the padding solution of the rolling tank, and the fabric is pressed by a pair of horizontal uniform rolls (the pressing force is adjusted by adjusting the spacing between the rolls) to maintain the rolling rate of 70. ~110%; running speed is 10~70m/min.

5. Flat-width winding: After the rolling, the fabric is immediately wound on the winding frame, and the winding is driven by the center driving roller (driven by the power mechanism); the constant linear speed and constant tension are required. The tension can be adjusted according to the fabric requirements (generally 10N-200N) and the speed is synchronized with the line speed of the rolls. There is no additional friction on the surface of the fabric, the inner and outer layers are even and uniform, and the cloth surface is flat. After the winding, the diameter of the fabric roll is generally up to about 1.2 m.

6. Coating: The fabric cloth roll after being wound up by the rolling liquid is immediately tightly coated with a plastic film to prevent the dye liquor from volatilizing in the subsequent stacking process.

7. Stacking: The coated cloth rolls are stacked for 5 to 24 hours in the low-speed rotation state according to the process requirements, and the cloth roll stacking is kept at a speed of 4~8r/min to ensure that the dyeing liquid will not be damaged. The gravity is transferred and the color difference is caused. The environment of the cloth stacking workshop requires the temperature to be kept at a constant room temperature (15 to 35 ° C). The dye and fabric are fully reacted and fixed during the stacking process.

8. The finishing (including washing) process is the same as the conventional conventional process, and the description of the present invention will not be repeated.

The various types of devices and devices described above can utilize existing conventional equipment.

While the present invention has been described in connection with the specific embodiments of the present invention, those skilled in the art can understand that various modifications can be made in the form and the details in accordance with the spirit of the invention. It belongs to the scope of patent protection of the present invention.

Claims

A novel silk dyeing method, characterized in that the method comprises:

A. Dyeing liquid preparation: The dyeing liquid includes dye liquid and auxiliary liquid, the dye liquid and the auxiliary liquid are respectively softened and mixed according to the dyeing process requirements, and then stored in different liquid storage tanks for use;

B. dyeing liquid transportation: the dye liquid and the auxiliary liquid are mixed into the rolling liquid tank in a ratio of 5:1, and the temperature of the dyeing liquid is 18 to 35 ° C;

C. Dip-dyed dyeing liquid: The silk fabric is continuously and smoothly operated to absorb the dyeing liquid in the dyeing liquid immersed in the rolling liquid tank, and then pulled away from the dyeing liquid and passed through a pair of uniform rolls and then driven by the center driving roller on the winding frame. The roll is taken up and the winding tension is 10~200N; the pair of uniform rolls are pressed to the silk fabric, and the rolling rate is maintained at 70-110%;

D. Stacking: The silk fabric roll after winding is tightly coated with the film immediately with the shaft head, and then stacked for 5 to 24 hours in a rotating state, the rotation speed is 4-8 r/min, and the ambient temperature is 15 to 35 °C. To ensure that the dye liquor does not transfer due to gravity;

After that, you can proceed to the next finishing process.
The novel silk dyeing method according to claim 1, characterized in that the silk fabric needs to be refined before entering the rolling liquid equipment, and requires: a wool effect of ≥ 8 cm / 30 min; a cloth surface PH value of 6 - 7.8.
The novel silk dyeing method according to claim 1, wherein the dye liquid is a reactive dye, and the amount is from 1 to 250 g/l, and the rest is soft water;

The auxiliary solution comprises 0-30 g/l of penetrant, 0-100 g/l of cosolvent, 0-200 g/l of dyeing agent, 5-600 g/l of alkali agent, and the rest is soft water.