HT Fine Chemical Co., Ltd.
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Application of Multi-functional Scouring Agent DAY in Continuous Pretreatment

Application of Multi-functional Scouring Agent DAY in Continuous Pretreatment

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With the improvement of people's living standards, the government is more and more active in environmental protection. As a major emitter, the production costs of printing and dyeing enterprises remain high. Environmental protection solution forces dyeing factories to reduce emissions. Energy conservation and emission reduction will be a forever topic. The market's capacity is excessive and the market competition is fierce, thus, improving production efficiency and reducing costs are the goals pursued by dyeing factories. The market demands higher and higher fabric quality, such as small color differences. A higher standard is also put forward to the crease, and finish of cloth surface. Continuous pretreatment is a good solution at present. At present, dyeing plants with a small scale are planning to install continuous equipment.


The following is the second generation of improved multi-functional pretreatment products and processes developed by our company. Compared with the first generation products, it has the advantages of more powerful functions, can be used in a complex environment and its application range is wider. It is with low production costs, high production efficiency, and remarkable energy-saving, and emission reduction effect. It is also a cost-effective product launched by our company in line with the market development trend.


1. General property

The multifunctional scouring process includes two products: multifunctional scouring agent and proton treating agent.

Item

Multi functional scouring agent DAY

Proton treatment agent 307A

Appearance

Light to colorless transparent liquid with good fluidity

Light brown transparent to slightly turbid liquid with good fluidity

Ionicity

Anion / nonionic

Anion / nonionic

Solubility

Soluble in water, super low foam

Soluble in water, super low foam

Stability

Resistant to acid, alkali, hard water metal, salt ,etc.

Resistant to acid, alkali, hard water metal, salt ,etc.


2.Properties and fields of application

(1). It integrates impurity removal, permeation, emulsification, oil removal, and hydrogen peroxide stability;

(2). It has good sequestering and dispersing ability, non-stick roller, good anti- staining, and super low foaming.

(3). After pretreatment, the fabric with good capillary effect, good whiteness, good hand feeling and high dyeing rate.

(4). Environmental product and free of APEO and other harmful substances.


3. Application

1. Formula of steam working solution: unit: g / L

Product

medium and dark color

light colour

white

Caustic soda 100%

6-12

6-12

6-12

Hydrogen peroxide 50%

5-10

12-18

18-25

Multi-function scouring DAY

4-5

4-5

4-5

Proton treatment agent 307A

1-2

3-4

5-6


Note: according to the different process of cloth and equipment, the process in the table is only for reference.


2. Formula of demineralization process : unit: g / L

Product

medium and dark color

Light color

white

Multi-function scouring agent DAY

1-2

1-2

1-2

Proton treatment agent 307A

0.5-1

2-3

2-3


3.Formula of cold path batch process : unit: g / L

Product

medium and dark color

Light color

white

Caustic soda 100%

8-15

8-15

8-15

Hydrogen Peroxide 50%

12-16

20-25

25-30

Cold reactor refining agent 487

8-10

10-12

10-12

Proton treatment agent 307A

0

1-2

2-3

Note: according to the different process of cloth and equipment, the process in the table is only for reference.


4. Process (according to the equipment conditions of dyeing factory)

4.1 continuous steam and water washing method

4.1.1 without demineralization box

Multiple immersion of working fluid (rolling residual rate: 90-100%) → steaming (100 ℃ * 15-20min) → 90 ℃ hot water washing (or 85 ℃ track washing) → 60 ℃ hot water washing → 40 ℃ wash with acid → cold water washing → dropping box (coating moisturizing).


process1.png


4.1.2 With pre-eluted mine box

Fabric preparation (→ predetermined type → polishing) → pre-washing and demineralization at 60 ℃→ demineralization at 85 ℃→ washing 50 ℃ → rolling dry (70%) → soaking and rolling working fluid (room temperature, 100-110%) → steaming 100 ℃ * 15-20min → 85 ℃ - 60 ℃ washing → acid neutralization → cold water washing → falling into the box (coating moisturizing)


4.2 Cold path batch- continuous washing

Cold path batch (two dipping and two padding or one dipping& padding) → batch for 12-16 hours (envelope sealing) → hot water washing for 1 grid at 70 ℃ → hot water washing for 2 grids at 90 ℃ → acid neutralization for 1 grid → cold water washing for 1 grid → dropping box (coating for moisture preservation)



4.3 Cold path batch--washing in cylinder

Cold path batch (two dipping and two padding or one dipping& padding) → batch for 12-16 hours (coating moisturizing) → washing in cylinder and neutralizing with acid → washing → dyeing



5. Cost comparison between continuous process and traditional vat cooking process (steaming process with demineralization as an example)

6. (1). Traditional process: caustic soda (100%) 2g/L, hydrogen peroxide (50%) 4g/L, Oil removing agent 600 1g/L, oxygen bleaching stabilizer 1g/L, calculated by bath ratio of 1:6.


process2.png


(2). Continuous steaming process: caustic soda (100%) 10g / L, hydrogen peroxide (50%) 16g / L, light color process as an example.


7. Compared with similar authoritative products on the market, DAY has a higher cost-performance ratio.

Taking the comparison of competitive product 1 and competitive product 2 of an authoritative product on the market as an example, the comparison of the quality indexes of the continuous steaming process with the same dosage is as follows: Fabric type: 16S cotton single side


Capillary effect(cm/30min)

Whiteness(wr,%)

Bursting strength(N)

left

middle

right

left

middle

right

left

middle

right

DAY

11

10

10.2

10.1

80

80

80

406

404

408

22

10.2

10.3

10.1

81

81

81

407

410

405

Competitive products 1

11

11.1

10.9

11

78

78

77.8

400

403

406

22

11.3

11.2

11.2

77.9

78.2

78

405

401

408

Competitive products 2

11

9.8

9.7

9.9

79.1

79

79.2

401

399

397

22

9.6

9.7

9.8

78.9

79.1

79

402

400

398


From the above table, we can see that the comprehensive effect of DAY of our company has completely reached the level of similar authoritative products on the market.


7. Conclusion

In today's environmental protection situation, the waste water discharge index is extremely precious, water-saving and energy-saving products are undoubtedly sought after by the market. Compared with the traditional tank cooking, the cooking and bleaching of continuous pretreatment saves production time and greatly improves the use efficiency of dyeing vat. Moreover, the product is energy-saving and efficient, simple operation, and high-cost performance, so it is worth promoting.


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