CN104342919A - Mercerizing treatment process for knitting OE yarn - Google Patents
Mercerizing treatment process for knitting OE yarn Download PDFInfo
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- CN104342919A CN104342919A CN201310322253.6A CN201310322253A CN104342919A CN 104342919 A CN104342919 A CN 104342919A CN 201310322253 A CN201310322253 A CN 201310322253A CN 104342919 A CN104342919 A CN 104342919A
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Abstract
Relating to the technical field of textile printing and dyeing, the invention discloses a mercerizing treatment process for a knitting OE (open-end) yarn. The process is directed at the problems of serious water pollution and high wastewater treatment cost caused by consumption of high concentration caustic soda in existing OE yarn mercerizing treatment processes. The process includes the steps of: refining treatment: conducting refining treatment on a singed OE yarn grey cloth, and then carrying out draining, cloth discharge, dehydration and drying; mercerizing treatment: performing mercerizing treatment on the refined grey cloth, and controlling the concentration of sodium carbonate in the bleaching liquid at 1.5-2g/L, the concentration of hydrogen peroxide at 3-5g/L, the pH value of the bleaching liquid at 10.5-11, the bleaching liquid temperature at 20-35DEG C, and the treatment time at 30-50min; and shaping: fully drying the grey cloth subjected to mercerizing treatment, and finally conducting heat shaping in a shaping machine. The process provided by the invention is especially suitable for mercerizing treatment on knitted fabric.
Description
Technical field
The present invention relates to fabrics printing and dyeing technical field, particularly relate to a kind of mercerization process of knitting OE yarn.
Background technology
OE(open-end) yarn is also referred to as open-end spinning or rotor spinning, belongs to open-end-spinning, and when namely spinning, twisting yarn ruptures, and by revolving cup high speed rotating, forms negative pressure, yarn is twisted.OE yarn short fiber, not easily broken, its raw material can be cotton textiles, polyester cotton blending or other raw materials.
Add man-hour at OE yarn, for fabric have strict before final treatment techniques, fabric, before processing, first requires that carrying out two cylinder to grey cloth singes process, removes the lint of generation when grey cloth is advanced, reaches the effect that cloth cover is bright and clean.Fabric carries out singing after process, and then carry out boiling-off destarch and mercerization process, boiling-off desizing is disposed by the slurry fractions in fabric.Mercerization process is processed with concentrated caustic (NaOH) under some tension by OE yarn before dyeing and finishing, and OE yarn shrinks in aqueous slkali, expands to cloth clamp, spray alkali, suction alkali, open washing are dried, fabric lines is very scraped, and cloth cover reaches the treatment process of lightening effects, and its performance of shrinking is improved.
But, concentrated caustic all has corrosiveness to fiber, skin etc., processing procedure water wasting, takes electricity, wash water more than 4 times, residual carbonate can cause hickie, the COD value of raffinate (ChemicalOxygen Demand, i.e. COD, it is under certain conditions, adopt the oxidant content consumed during certain strong oxidizer process water sample, represent with the mg/L of oxygen, COD reflects in water by the degree that reducing substances pollutes) higher, wastewater treatment expense increases.
Summary of the invention
For in existing OE yarn mercerization process, adopt concentrated caustic to make the serious and wastewater treatment problem costly of water pollutions, the object of this invention is to provide a kind of mercerization process of knitting OE yarn.
The technical solution adopted for the present invention to solve the technical problems comprises the following steps:
(1) refining treatment: the OE yarn grey cloth after singing is carried out refining processing, then draining, goes out cloth, dehydration, dries;
(2) mercerization finish: the grey cloth after step (1) refining treatment is carried out mercerization finish, controlling soda ash concentration in bleaching liquor is 1.5 ~ 2g/L, and hydrogen peroxide concentration is 3 ~ 5g/L, and bleaching liquor pH value is between 10.5 ~ 11;
(3) shape: the grey cloth after step (2) mercerization finish is fully dried, finally HEAT SETTING in setting machine again.
Preferably, the weight ratio controlling grey cloth and water in described step (1) is 1.5 ~ 12, and in solution, refining agent concentration is 0.2 ~ 3g/L, and degreaser concentration is 0.2 ~ 2g/L, and soda ash concentration is 2 ~ 5g/L, solution temperature 95 ~ 100 DEG C, 20 ~ 100 minutes processing times.
Further, containing stabilizing agent in the bleaching liquor of described step (2), stabilizer concentration is 0.5 ~ 1.5g/L.
Described stabilizing agent is sodium metasilicate, and described sodium metasilicate and hydrogen peroxide amount ratio are 2:1.
Further, in described step (2), the temperature of bleaching liquor is 25 ~ 30 DEG C, processing time 30 ~ 50min.
In described step (2), cloth speed is 10 ~ 30m/min, tension force 200 ~ 400N.
Effect of the present invention is: technical solution of the present invention is improvement for OE yarn dyeing fabric technique and optimization, the yarn-dyed whole front mercerization process of OE adopts soda ash to replace caustic soda to bleach or refining, controlled by temperature and dosage, dyeing time shortens 50% nearly, improve labor productivity, alleviate the burden of sewage disposal; In addition, in the technical program, the washable and color fastness to light of dyestuff on OE yarn woven fabric all meets the COLOR FASTNESS requirement of DYED FABRICS, not only has good Color, also improves the stability of fabric quality and dyeing.
Detailed description of the invention
Embodiment one:
(1) refining treatment: the OE yarn grey cloth after singing is put into overflow dye vat and carries out refining processing, the weight ratio controlling grey cloth and water is 10:1, and in solution, refining agent concentration is 3g/L, degreaser concentration is 2g/L, soda ash concentration is 5g/L, solution temperature 100 DEG C, 20 minutes processing times.Then draining, go out cloth, dehydration, dry.
(2) mercerization finish: cloth is carried out mercerization finish on cylinder mercerizing range, controlling soda ash concentration in bleaching liquor is 2g/L, stabilizer concentration is 1.5g/L, hydrogen peroxide concentration is 5g/L, and bleaching liquor pH value is 11, and bleaching liquor temperature is 35 DEG C, processing time 30min, cloth speed is 30m/min, and tension force 400N, spray washing temperature is 80 DEG C.
(3) shape: the fabric after mercerization finish is fully dried, finally HEAT SETTING in setting machine again, obtain product.
In tradition mercerization process, the consumption of caustic soda is all higher, and caustic soda not only regulates pH value, and the function of also hold concurrently destarch and kiering, it is very unstable that this just makes drift bathe, and accelerates the decomposition of hydrogen peroxide, not only waste hydrogen peroxide, and fiber degradation may be caused to make fabric tendering.In order to control the decomposition rate of hydrogen peroxide, applicable stabilizing agent be added, hydrogen peroxide is decomposed by technological requirement, and decomposition and stable between reach balance.In addition, in bleaching process, bleaching liquor pH can decline gradually, needs suitably to add alkaline agent in bleaching liquor, if sodium metasilicate etc. is as stabilizing agent, prevents bleaching liquor pH value from declining, damage fiber.The stabilizing agent adopted in the present invention is sodium metasilicate (waterglass), sodium metasilicate and hydrogen peroxide amount ratio are 2:1, and sodium metasilicate too much can make fabric hardness increase, and feel is hardened, in bleaching liquor, total alkali content 60 ~ 80% is provided by sodium silicate for this reason, and all the other 20 ~ 40% are provided by NaOH.
Embodiment two:
(1) refining treatment: the OE yarn grey cloth after singing is put into overflow dye vat and carries out refining processing, the weight ratio controlling grey cloth and water is 2:1, and in solution, refining agent concentration is 0.2g/L, degreaser concentration is 0.2g/L, soda ash concentration is 2g/L, solution temperature 95 DEG C, 100 minutes processing times.Then draining, go out cloth, dehydration, dry.
(2) mercerization finish: cloth is carried out mercerization finish on cylinder mercerizing range, controlling soda ash concentration in bleaching liquor is 1.5g/L, stabilizer concentration is 0.5g/L, hydrogen peroxide concentration is 3g/L, and bleaching liquor pH value is 10.5, and bleaching liquor temperature is 20 DEG C, processing time 50min, cloth speed is 10m/min, and tension force 200N, spray washing temperature is 80 DEG C.
(3) shape: the fabric after mercerization finish is fully dried, finally HEAT SETTING in setting machine again, obtain product.
Embodiment three:
(1) refining treatment: the OE yarn grey cloth after singing is put into overflow dye vat and carries out refining processing, the weight ratio controlling grey cloth and water is 5:1, and in solution, refining agent concentration is 1.5g/L, degreaser concentration is 1g/L, soda ash concentration is 3g/L, solution temperature 80 DEG C, 60 minutes processing times.Then draining, go out cloth, dehydration, dry.
(2) mercerization finish: cloth is carried out mercerization finish on cylinder mercerizing range, controlling soda ash concentration in bleaching liquor is 1.8g/L, stabilizer concentration is 1g/L, hydrogen peroxide concentration is 4g/L, and bleaching liquor pH value is 10.8, and bleaching liquor temperature is 25 DEG C, processing time 40min, cloth speed is 25m/min, and tension force 300N, spray washing temperature is 80 DEG C.
(3) shape: the fabric after mercerization finish is fully dried, finally HEAT SETTING in setting machine again, obtain product.
When pH value of solution=11, temperature often raises 10 DEG C, and bleaching rate increases by 2.3 times, and fibre damage speed improves 2.7 times.The height of temperature has considerable influence to discoloration, and temperature is low, and discoloration is slow, and temperature raises, and effect is accelerated, and during more than 35 degree, effect is violent, and cellulosic fibrous polymer degree significantly declines, and fibre damage is serious, and therefore, bleaching liquor temperature is preferably 25 ~ 30 DEG C.
The more traditional mercerization process of the technical program, soda ash consumption reduces, and by the control of temperature and dosage, dyeing time shortens 50% nearly, improves labor productivity, alleviates the burden of sewage disposal, energy-conserving and environment-protective.
Test cloth is 32SOE yarn facecloth, and this programme and the same kind fabric of traditional mercerization methods process, compare its fracture property, tensile property, Bursting Properties and anti-wear performance as table 1.
Table 1
Visible, in tradition mercerization process, significantly declined by the OE yarn woven fabric tensile strength after concentrated caustic process, explanation latent lesion is serious, and OE yarn after method process of the present invention is washable and color fastness to light all meets the COLOR FASTNESS requirement of DYED FABRICS, not only there is good Color, also improve the stability of fabric quality and dyeing.
Those skilled in the art will recognize that; above-mentioned detailed description of the invention is exemplary; to enable those skilled in the art better understand content of the present invention; should not be understood as limiting the scope of the invention; as long as any equivalent change done according to disclosed spirit or modification, all fall into scope.
Claims (6)
1. a mercerization process for knitting OE yarn, is characterized in that it comprises the following steps:
(1) refining treatment: the OE yarn grey cloth after singing is carried out refining processing, then draining, goes out cloth, dehydration, dries;
(2) mercerization finish: the grey cloth after step (1) refining treatment is carried out mercerization finish, controlling soda ash concentration in bleaching liquor is 1.5 ~ 2g/L, and hydrogen peroxide concentration is 3 ~ 5g/L, and bleaching liquor pH value is between 10.5 ~ 11;
(3) shape: the grey cloth after step (2) mercerization finish is fully dried, finally HEAT SETTING in setting machine again.
2. mercerization process according to claim 1, it is characterized in that: the weight ratio controlling grey cloth and water in described step (1) is 1.5 ~ 12, in solution, refining agent concentration is 0.2 ~ 3g/L, degreaser concentration is 0.2 ~ 2g/L, soda ash concentration is 2 ~ 5g/L, solution temperature 95 ~ 100 DEG C, 20 ~ 100 minutes processing times.
3. mercerization process according to claim 1, is characterized in that: containing stabilizing agent in the bleaching liquor of described step (2), stabilizer concentration is 0.5 ~ 1.5g/L.
4. mercerization process according to claim 3, is characterized in that: described stabilizing agent is sodium metasilicate, and described sodium metasilicate and hydrogen peroxide amount ratio are 2:1.
5. mercerization process according to claim 1, is characterized in that: in described step (2), the temperature of bleaching liquor is 25 ~ 30 DEG C, processing time 30 ~ 50min.
6. mercerization process according to claim 1, is characterized in that: in described step (2), cloth speed is 10 ~ 30m/min, tension force 200 ~ 400N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310322253.6A CN104342919A (en) | 2013-07-29 | 2013-07-29 | Mercerizing treatment process for knitting OE yarn |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310322253.6A CN104342919A (en) | 2013-07-29 | 2013-07-29 | Mercerizing treatment process for knitting OE yarn |
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| CN104342919A true CN104342919A (en) | 2015-02-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142733A (en) * | 2017-05-17 | 2017-09-08 | 芜湖富春染织股份有限公司 | A kind of method of yarn mercerization finish |
| CN111058208A (en) * | 2019-12-06 | 2020-04-24 | 广东溢达纺织有限公司 | Cheese pretreatment process and cheese dyeing process |
-
2013
- 2013-07-29 CN CN201310322253.6A patent/CN104342919A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142733A (en) * | 2017-05-17 | 2017-09-08 | 芜湖富春染织股份有限公司 | A kind of method of yarn mercerization finish |
| CN111058208A (en) * | 2019-12-06 | 2020-04-24 | 广东溢达纺织有限公司 | Cheese pretreatment process and cheese dyeing process |
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Application publication date: 20150211 |