CN104018336A - Method for desizing cotton yarn-dyed fabrics - Google Patents
Method for desizing cotton yarn-dyed fabrics Download PDFInfo
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- CN104018336A CN104018336A CN201410288237.4A CN201410288237A CN104018336A CN 104018336 A CN104018336 A CN 104018336A CN 201410288237 A CN201410288237 A CN 201410288237A CN 104018336 A CN104018336 A CN 104018336A
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Abstract
The invention discloses a method for desizing cotton yarn-dyed fabrics and belongs to the cotton yarn-dyed fabric pretreatment technology field of printing and dyeing industries. The cotton yarn-dyed fabrics are subjected to compound bio-enzyme desizing treatment after being pretreated by hot water, are subjected to enzyme deactivation treatment after stacking to remove active enzyme remaining in the fabrics, and then are washed and dried. The method aims at solving the technical problem that starch sized cotton yarn-dyed fabrics alpha-amylase padding-steaming stacking method is poor in desizing effect and starch size still remains on desized yarn-dyed fabrics, so that after-treatment quality of the yarn-dyed fabrics is influenced, thus the purpose of improving the desizing effect of the yarn-dyed fabrics is achieved.
Description
Technical field
The invention belongs to textile yarn-dyed fabric the pretreatment technology field, particularly destarch treatment process of dyeing.
Background technology
In order to meet the normal weaving process requirement of yarn-dyed fabric, the warp thread of textile yarn-dyed fabric all needs through starching weaving as last, after weaving, in order not affect the rear arrangement of yarn-dyed fabric and to meet the quality requirements such as yarn-dyed fabric feel, outward appearance, need first yarn-dyed fabric to be carried out to destarch processing, to remove the slurry on yarn-dyed fabric warp thread.At present by more than 11.7tex be made into through weft yarn, the warp sizing of low-grade textile yarn-dyed fabric is taking (sex change) starch size as main.The destarch of traditional textile yarn-dyed fabric generally adopts alkali destarch or the destarch of alkali-oxidant, but these desizing method can be checked colors, the color of fabric face and the brute force of fiber cause damage, traditional desizing also needs to consume a large amount of water and chemical substance in addition, not only consumption of natural resource, and environment is produced to severe contamination.Therefore only greatly develop environmentally friendly desizing, could fundamentally address this problem, in addition in conjunction with the feature of yarn-dyed fabric self, the destarch of yarn-dyed fabric can only adopt the destarch mode of biological enzyme gentle, that the fabric color of checking colors does not exert an influence.
Although years of researches and application have been carried out in the biology enzyme destarch of the textile yarn-dyed fabric of starch starching, the single α-amylase destarch of main employing at present.Find from long-term production practices, after the technique destarch of the single α-amylase destarch of existing employing is processed, the destarch effect of yarn-dyed fabric is undesirable, destarch grade only has 4-5 level, there is sizable gap with the 7-8 level requiring, cause the Boardy Feeling of fabric after destarch, had a strong impact on the quality of Yarn-dyed fabric.This is that as amylopectin in cornstarch accounts for 74%, amylose only accounts for 26% because starch is mainly made up of amylopectin; In farina, amylopectin accounts for 80%, and amylose only accounts for 20%.And α-amylase belongs to endo-type amylase, when acting on starch, it is to cut off the α-Isosorbide-5-Nitrae glycosidic bond in starch polymer chain in random mode, but can not be hydrolyzed α-1 in amylopectin that 6 glycosidic bonds can not be hydrolyzed α-Isosorbide-5-Nitrae glycosidic bond of contiguous branch point.
Debranching enzyme is α-1 in the macromolecular compounds such as hydrolysis amylopectin, glycogen, and the enzyme of 6 glycosidic bonds, at present in a large number for starch industry, brewing industry and feedstuff industry.As the production for starch industry high glucose slurry, conventional production methods is to adopt α-amylase and Glucoamylase hydrolysis starch, because these two kinds of enzymes all can not hydrolyzing alpha-1,6 glycosidic bonds, therefore starch can not thoroughly be decomposed, add debranching enzyme, can reduce the reaction time, and can improve the purity of product; Production for high maltose syrup: maltose adopts α-amylase, the common hydrolyzed starch of beta amylase to make, in the time of saccharification, add debranching enzyme and de-amylopectin can be formed to short amylose fragment, be conducive to the effect of α-amylase, reduce the formation of β-limit dextrin, thereby improve the content of maltose; In the saccharifying of brewing, make barley and other auxiliary material saccharification complete, the enzyme system in Fructus Hordei Germinatus, also add α-amylase and debranching enzyme etc.; For the cereal starch of feed, taking amylopectin as main, its content is up to 80%, amylose content only accounts for 20%, adding appropriate starch debranching enzymically decomposed starch liquefier can make it change amylose into, so more be conducive to other diastatic hydrolytic processes, improve the utilization rate of cereal starch in feed.
Carbohydrase claims again glucoamylase, can starch be decomposed into glucose from irreducibility end hydrolysis a-1.4 glucoside bond, also can slowly be hydrolyzed a-1.6 glucoside bond, be converted into glucose, also can be hydrolyzed dextrin, discharge glucose from the irreducibility end of dextrin.
Summary of the invention
Object of the present invention be exactly in starch starching, the bank up technical problem of method destarch poor effect of low-grade textile pad-decatize of yarn-dyed fabric α-amylase, propose a kind of improve at present in, the effect of low-grade textile yarn-dyed fabric enzyme process destarch, improve the desizing method of the quality of Yarn-dyed fabric.
Technical solution of the present invention comprises the following steps:
1) preliminary treatment: textile yarn-dyed fabric is through hot-water pretreatment;
2) compound bio enzyme desizing processing: by fabric through pH value be 5.0～7.0, after the enzyme desizing immersion that comprises α-amylase, debranching enzyme and carbohydrase rolls, then the processing of banking up; The described liquid carrying rate of processing of banking up is 50～120%, and the environment temperature of processing of banking up is 40～70 DEG C, and the time of banking up is 45～120min;
3) the enzyme processing of going out: remove residual organized enzyme in fabric;
4) washing, oven dry: the clean post-drying of cold water washing by fabric through 20～40 DEG C.
The present invention adopts the compound destarch enzyme liquid first padding by α-amylase, debranching enzyme and carbohydrase three common combination, then bank up, go out enzyme and washing to the textile yarn-dyed fabric of starch starching.
Because amylase is generally difficult for decomposing raw starch or sclerosis starch, the present invention adopts hot-water pretreatment can impel starch serous coat swelling, enzyme liquid can be penetrated in serous coat preferably, has increased enzyme and has contacted with the effective of starch size, is more conducive to the decomposition of enzyme to starch.Banking up is the important means that reaches enzyme desizing treatment effect, and in general, in the field of activity of destarch enzyme, the temperature of banking up is high, and the time is shorter; The temperature of banking up is low, and the time is long.The temperature of banking up that the present invention adopts is 40～70 DEG C, and the time of banking up is 45～120min, can make enzyme fully act synergistically with starch in optimum temperature range, and the starch size on yarn-dyed fabric is thoroughly decomposed, and improves destarch effect.
To sum up; it is effective that the present invention adopts textile yarn-dyed fabric compound bio of the present invention enzyme desizing to have destarch; little to fibre damage; the quality of processing fabric is high; soft; particularly the colourity of PROCESS FOR TREATMENT waste water of the present invention, pH value and COD value, far below traditional handicraft, are conducive to the protection of ecological environment, have also greatly alleviated the burden of sewage disposal.And the present invention has been owing to having adopted the continuous processing technique that pads-bank up, have that production efficiency is high, labour intensity is low, the feature such as energy-conservation, water saving.
Enzyme is a kind of protein, there is specific stereoeffect, when pH value is higher than 9 time, can make the stereochemical structure of enzyme destroy and lose activity, improve the pH value enzyme that goes out and have that enzyme-removal temperature is low, the high feature of the enzyme efficiency of going out, and thermally sensitive color on yarn-dyed fabric is not had to any impact, but can make webbing alkalescence, therefore, go out after enzyme and will fully wash; Equally, when temperature be elevated to 85～100 DEG C also can make the space structure of enzyme, even chemical constitution destroy and lose activity, improve the temperature enzyme that goes out and also there is the high feature of enzyme efficiency of going out, and can not make yarn-dyed fabric band alkalescence, alkali-sensitive color on yarn-dyed fabric is not had to any impact.
Therefore, the present invention's enzyme processing of going out has two kinds of modes, a kind of is to improve the go out method of enzyme of pH value: first the fabric of heap postpone is washed through the hot water storgae of 70～80 DEG C, and then starch products after being decomposed by enzyme on the cold rinse bank eccysis fabric of 20～40 DEG C, then the sodium hydrate aqueous solution that is 9～10 through pH by fabric pads processing.
When adopting when improving pH value and going out the method for enzyme, in described sodium hydrate aqueous solution, the accounting of NaOH is 0.5～1.0g/L.The concentration of NaOH is too low, and pH does not reach requirement, and the enzyme effect of going out is bad; Naoh concentration is too high, though the enzyme effect of going out having had, the too high color that may affect on yarn-dyed fabric of pH, and increased the burden of follow-up washing.
Another kind of enzyme inactivating method is high temperature WATER-WASHING METHOD: by the fabric of heap postpone directly through the hot water treatment of 85～100 DEG C.
Because enzyme is to be incubated the processing of banking up to the destarch processing of yarn-dyed fabric, after enzyme desizing, the starch being degraded still remains on yarn-dyed fabric, thus after destarch, need to carry out multistep washing (first hot water wash, then cold wash), to remove the starch size of having degraded on yarn-dyed fabric.The effect of enzyme of going out is by improving temperature or pH value, enzyme being lost activity.
Fully remove the starch catabolite after being decomposed by enzyme on yarn-dyed fabric by the inventive method enzyme after washing that goes out, improve feel and the wettability of fabric.
The textile yarn-dyed fabric that the present invention is more applicable for processing be with starch size starching by more than 11.7tex be made into through weft yarn, low-grade textile yarn-dyed fabric.
In addition, in enzyme desizing liquid of the present invention, α-amylasecontent is 0.5～5.5g/L, and debranching enzyme content is 0.5～5.0g/L, and carbohydrase content is 0.5～5.0g/L.
The excellent results of this enzyme desizing fluid component: utilize α-amylase to cut off at random α-1 in starch polymer chain, 4 glycosidic bonds, debranching enzyme hydrolysis amylopectin α-1,6 glycosidic bonds, carbohydrase is from the synergy of irreducibility end hydrolysis a-1.4 glucoside bond, improve decomposition efficiency and the decomposition rate of starch size, improve the destarch effect of yarn-dyed fabric.
In enzyme desizing liquid of the present invention, can also comprise bleeding agent, the content of bleeding agent in enzyme desizing liquid is 0～20g/L, and described bleeding agent is fatty alcohol-polyoxyethylene ether, metal carboxylate anion surfactant or Sulfates anion surfactant.The present invention adopts bleeding agent in enzyme desizing liquid, is the wetting osmosis of utilizing add of bleeding agent, makes enzyme fully be penetrated into fabric and yarn inside, improves the decomposition removal effect of enzyme to fabric and yarn internal starch slurry.
Preferred bleeding agent is nonyl alcohol polyoxyethylene ether or octyl group alcohol polyoxyethylene ether or lauryl sodium sulfate.
In order to improve the wetting and permeance property of yarn-dyed fabric, make the starch serous coat of fabric and yarn inside fully swelling, improve follow-up enzyme and process the decomposition to starch size.The present invention also can add fatty alcohol-polyoxyethylene ether, metal carboxylate anion surfactant or Sulfates anion surfactant in pretreated hot water.Preferably add nonyl alcohol polyoxyethylene ether or octyl group alcohol polyoxyethylene ether or lauryl sodium sulfate.
Detailed description of the invention
One, embodiment 1:
Textile yarn-dyed fabric grey cloth specification: 14.5tex × 14.5tex, 480/10cm of warp count, 275.5/10cm of weft count.Grey cloth has passed through starch size starching processing.
Desizing flow scheme design: textile yarn-dyed fabric pads after hot-water pretreatment that complex enzyme liquid, insulation are banked up, hot water wash (the double enzyme that goes out), cold wash.
Concrete steps:
1, hot-water pretreatment:
By textile impregnation 3min in the hot water of 90 DEG C, then by roll pressed, and the liquid carrying rate of controlling fabric is 40～70%, then enters rear road compound biological enzyme desizing liquid and carries out destarch processing.
2, compound bio enzyme desizing processing:
Enzyme desizing liquid is prepared in advance: will in 1kg water, add α-amylase, debranching enzyme, carbohydrase and bleeding agent, and make in mixed solution containing α-amylase 0.5～2g/L, debranching enzyme 0.5～2g/L, carbohydrase 4～5g/L, bleeding agent 1～20g/L.And adjust pH value to 5～6.0 of mixed solution with acetic acid, and mixed solution is placed in and is padded in groove, heat up and be incubated to 60 DEG C.
Fabric after hot-water pretreatment is padded to the processing of banking up after drill traverse is rolled through this.
Bank up process fabric liquid carrying rate 70%～105%, environment temperature is 65～70 DEG C, the time of banking up is 46min.
Bleeding agent can adopt nonyl alcohol polyoxyethylene ether (AEO-9), also can adopt octyl group alcohol polyoxyethylene ether or lauryl sodium sulfate (NaLS).
3, the washing before enzyme of going out:
The first hot water trough washery through 70～80 DEG C by the fabric of heap postpone, and then wash through the cold rinse bank of 20～40 DEG C, with the starch products after being decomposed by enzyme on abundant eccysis fabric.
4, adopt the method that the improves pH value enzyme that goes out:
In rinsing bowl, add water, and add the NaOH of 0.5g/L～1.0g/L left and right, the pH value of liquid in rinsing bowl is brought up to 9～10, then fabric is padded to processing in this rinsing bowl.
5, go out enzyme after washing, oven dry:
The enzyme that will go out fabric after treatment adopts cold water fully to wash, then the drying in oven of 100～105 DEG C.
Textile yarn-dyed fabric after above-mentioned PROCESS FOR TREATMENT, the capillary effect after 105 DEG C of oven dry reaches 6.2cm/30min, and starch destarch rate is 100%, and destarch grade reaches 9 grades, and the strength loss of yarn-dyed fabric is 6.5%, before and after processing, the K/S value of yarn-dyed fabric is unchanged.
Two, embodiment 2:
Textile yarn-dyed fabric grey cloth specification: 14.5tex × 14.5tex, 480/10cm of warp count, 275.5/10cm of weft count.Grey cloth has passed through starch size starching processing.
Desizing flow scheme design: textile yarn-dyed fabric pads after hot-water pretreatment that the enzyme liquid that is made up of single α-amylase, insulation are banked up, hot water wash (the double enzyme that goes out), cold wash.
Concrete steps:
1, hot-water pretreatment:
After being mixed with 1kg water, 20g bleeding agent is warming up to 90 DEG C.Bleeding agent is selected nonyl alcohol polyoxyethylene ether or octyl group alcohol polyoxyethylene ether, or selects lauryl sodium sulfate (NaLS).
Concrete processing mode: by textile impregnation 3min in the mixture solution of above-mentioned 90 DEG C, then by roll pressed, the liquid carrying rate of controlling fabric is 40%-70%, then enters rear road compound biological enzyme desizing liquid and carries out destarch processing.
2, compound bio enzyme desizing processing:
Enzyme desizing liquid is prepared in advance: will in 1kg water, add α-amylase, debranching enzyme and carbohydrase, and make in mixed solution containing α-amylase 2～5.5g/L, debranching enzyme 2g～5.0/L, carbohydrase 0.5～4g/L.And adjust pH value to 6.0～7.0 of mixed solution with acetic acid, mixed solution is placed in and is padded in groove.
Fabric after hot-water pretreatment is padded to the processing of banking up after drill traverse is rolled through this.
Bank up process fabric liquid carrying rate 80～120%, the environment temperature of banking up is 40～45 DEG C, the time of banking up is 100～120min.
3, high temperature is washed the enzyme that goes out:
The fabric of heap postpone is washed to the enzyme that goes out through the hot water storgae of 85～100 DEG C, and the starch products after being decomposed by enzyme on the one hand abundant eccysis fabric, utilizes the effect of high-temperature water by enzyme-deactivating on the other hand.
4, washing, oven dry:
The enzyme that will go out fabric after treatment adopts the abundant washes clean of cold water, then the drying in oven of 100～105 DEG C.
Capillary effect 4.2cm/30min through above-mentioned textile yarn-dyed fabric after treatment after 105 DEG C of oven dry, starch destarch rate is 85.9%, and destarch grade is 5 grades, and the strength loss of yarn-dyed fabric is 6.4%, and before and after processing, the K/S value of yarn-dyed fabric is unchanged.
Claims (10)
1. a method for textile yarn-dyed fabric destarch, is characterized in that comprising the following steps:
1) preliminary treatment: textile yarn-dyed fabric is through hot-water pretreatment;
2) compound bio enzyme desizing processing: by fabric through pH value be 5.0～7.0, after the enzyme desizing immersion that comprises α-amylase, debranching enzyme and carbohydrase rolls, then the processing of banking up; The described liquid carrying rate of processing of banking up is 50～120%, and the environment temperature of processing of banking up is 40～70 DEG C, and the time of banking up is 45～120min;
3) the enzyme processing of going out: remove residual organized enzyme in fabric;
4) washing, oven dry: the clean post-drying of cold water washing by fabric through 20～40 DEG C.
2. method according to claim 1, the enzyme processing of going out described in it is characterized in that is: the first hot water storgae washing through 70～80 DEG C by the fabric of heap postpone, and then starch products after being decomposed by enzyme on the cold rinse bank eccysis fabric of 20～40 DEG C, then the sodium hydrate aqueous solution that is 9～10 through pH by fabric pads processing.
3. method according to claim 2, the content that it is characterized in that NaOH in described sodium hydrate aqueous solution is 0.5～1.0g/L.
4. method according to claim 1, the enzyme processing of going out described in it is characterized in that is: the hot water treatment by the fabric of heap postpone through 85～100 DEG C.
5. method according to claim 1, it is characterized in that described textile yarn-dyed fabric be with starch size starching by more than 11.7tex be made into through weft yarn, low-grade yarn-dyed fabric.
6. according to method described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that in described enzyme desizing liquid, α-amylasecontent is 0.5～5.5g/L, debranching enzyme content is 0.5～5.0g/L, and carbohydrase content is 0.5～5.0g/L.
7. method according to claim 1, it is characterized in that described enzyme desizing liquid also comprises bleeding agent, the content of described bleeding agent in enzyme desizing liquid is 0～20g/L, and described bleeding agent is fatty alcohol-polyoxyethylene ether, metal carboxylate anion surfactant or Sulfates anion surfactant.
8. method according to claim 7, it is characterized in that described bleeding agent fatty alcohol-polyoxyethylene ether is nonyl alcohol polyoxyethylene ether or octyl group alcohol polyoxyethylene ether, described metal carboxylate anion surfactant is sodium laurate, and described Sulfates anion surfactant is lauryl sodium sulfate.
9. method according to claim 1, is characterized in that adding fatty alcohol-polyoxyethylene ether, metal carboxylate anion surfactant or Sulfates anion surfactant in pretreated hot water.
10. method according to claim 9, is characterized in that adding nonyl alcohol polyoxyethylene ether or octyl group alcohol polyoxyethylene ether or lauryl sodium sulfate in pretreated hot water.
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| CN104313891A (en) * | 2014-10-17 | 2015-01-28 | 苏州大学 | Starch slurry desizing method adopting supercritical carbon dioxide as medium |
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| CN104389153A (en) * | 2014-10-17 | 2015-03-04 | 苏州大学 | Method for enzymatic desizing of cotton in supercritical carbon dioxide fluid |
| CN104452319A (en) * | 2014-10-17 | 2015-03-25 | 苏州大学 | Desizing pretreatment method of textile |
| CN106149345A (en) * | 2016-08-30 | 2016-11-23 | 苏州紫澜实业有限公司 | The desizing processing method of double-sided plush fabric |
| CN106192355A (en) * | 2016-08-30 | 2016-12-07 | 苏州紫澜实业有限公司 | The desizing processing method of Hair style fabric |
| CN106192356A (en) * | 2016-08-30 | 2016-12-07 | 苏州紫澜实业有限公司 | The desizing processing method of PV pile fabric |
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| CN106222990A (en) * | 2016-08-30 | 2016-12-14 | 苏州紫澜实业有限公司 | Fall pile fabric desizing processing method |
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| CN106245308A (en) * | 2016-08-31 | 2016-12-21 | 常熟市鑫博伟针纺织有限公司 | The desizing processing method of towel cloth |
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| CN106350987A (en) * | 2016-08-30 | 2017-01-25 | 苏州紫澜实业有限公司 | Desizing method for brushed fabric |
| CN106381672A (en) * | 2016-08-30 | 2017-02-08 | 苏州紫澜实业有限公司 | Desizing processing method of wool fabric |
| CN106381676A (en) * | 2016-08-31 | 2017-02-08 | 常熟市华裕知识产权咨询服务有限公司 | Desizing method of nitrile and cotton blended fabric |
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| CN114808323A (en) * | 2022-06-02 | 2022-07-29 | 威海市锦绣抽纱有限公司 | Cotton fabric printing and dyeing desizing pretreatment equipment and pretreatment process |
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| CN104313891A (en) * | 2014-10-17 | 2015-01-28 | 苏州大学 | Starch slurry desizing method adopting supercritical carbon dioxide as medium |
| CN104372598A (en) * | 2014-10-17 | 2015-02-25 | 苏州大学 | Supercritical carbon dioxide fluid desizing method by use of combined enzyme |
| CN104389153A (en) * | 2014-10-17 | 2015-03-04 | 苏州大学 | Method for enzymatic desizing of cotton in supercritical carbon dioxide fluid |
| CN104452319A (en) * | 2014-10-17 | 2015-03-25 | 苏州大学 | Desizing pretreatment method of textile |
| CN106222990A (en) * | 2016-08-30 | 2016-12-14 | 苏州紫澜实业有限公司 | Fall pile fabric desizing processing method |
| CN106283596A (en) * | 2016-08-30 | 2017-01-04 | 苏州紫澜实业有限公司 | The desizing processing method of velvet stuff |
| CN106192356A (en) * | 2016-08-30 | 2016-12-07 | 苏州紫澜实业有限公司 | The desizing processing method of PV pile fabric |
| CN106222989A (en) * | 2016-08-30 | 2016-12-14 | 苏州紫澜实业有限公司 | The desizing processing method of polar fleece fabric |
| CN106149345A (en) * | 2016-08-30 | 2016-11-23 | 苏州紫澜实业有限公司 | The desizing processing method of double-sided plush fabric |
| CN106245307A (en) * | 2016-08-30 | 2016-12-21 | 苏州紫澜实业有限公司 | The desizing processing method of corduroy fabric |
| CN106381672A (en) * | 2016-08-30 | 2017-02-08 | 苏州紫澜实业有限公司 | Desizing processing method of wool fabric |
| CN106192355A (en) * | 2016-08-30 | 2016-12-07 | 苏州紫澜实业有限公司 | The desizing processing method of Hair style fabric |
| CN106350988A (en) * | 2016-08-30 | 2017-01-25 | 苏州紫澜实业有限公司 | Desizing processing method of flannel fabric |
| CN106350987A (en) * | 2016-08-30 | 2017-01-25 | 苏州紫澜实业有限公司 | Desizing method for brushed fabric |
| CN106245308A (en) * | 2016-08-31 | 2016-12-21 | 常熟市鑫博伟针纺织有限公司 | The desizing processing method of towel cloth |
| CN106381676A (en) * | 2016-08-31 | 2017-02-08 | 常熟市华裕知识产权咨询服务有限公司 | Desizing method of nitrile and cotton blended fabric |
| CN110042645A (en) * | 2019-04-09 | 2019-07-23 | 杭州澳品纺织有限公司 | A kind of desizing method of cotton fabric |
| CN114808323A (en) * | 2022-06-02 | 2022-07-29 | 威海市锦绣抽纱有限公司 | Cotton fabric printing and dyeing desizing pretreatment equipment and pretreatment process |
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| CN104018336B (en) | 2016-01-20 |
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