CN104018336B - A kind of desizing method of textile yarn-dyed fabric - Google Patents
A kind of desizing method of textile yarn-dyed fabric Download PDFInfo
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- CN104018336B CN104018336B CN201410288237.4A CN201410288237A CN104018336B CN 104018336 B CN104018336 B CN 104018336B CN 201410288237 A CN201410288237 A CN 201410288237A CN 104018336 B CN104018336 B CN 104018336B
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Abstract
A method for textile yarn-dyed fabric destarch, belongs to the textile yarn-dyed fabric pretreatment technology field of dyeing.First by textile yarn-dyed fabric after hot-water pretreatment through compound bio enzyme desizing process, heap postpone is gone out ferment treatment, removes organized enzyme residual in fabric, then through washing, dry.The present invention is intended to solve the textile yarn-dyed fabric α-amylase of starch starching pads-and decatize banks up after method destarch poor effect, destarch and residual starch slurry gone back by yarn-dyed fabric, the technical problem of yarn-dyed fabric Final finishing quality can be affected, to reach the object improving yarn-dyed fabric destarch effect.
Description
Technical field
The invention belongs to textile the yarn-dyed fabric 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 weave last as all need through starching, after weaving, in order to not affect the Final finishing of yarn-dyed fabric and meet the quality requirements such as yarn-dyed fabric feel, outward appearance, need first to carry out destarch process to yarn-dyed fabric, to remove the slurry on yarn-dyed fabric warp thread.At present by more than 11.7tex in weft yarn is made into, the warp sizing of low-grade textile yarn-dyed fabric is based on (sex change) starch size.The destarch of traditional textile yarn-dyed fabric generally adopts alkali destarch or alkali-oxidant destarch, but these desizing method can be checked colors, the color of fabric face and the brute force of fiber cause damage, desizing traditional in addition also needs to consume a large amount of water and chemical substance, not only consumption of natural resource, and severe contamination is produced to environment.Therefore environmentally friendly desizing is only greatly developed, 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 gentle, that fabric color of checking colors does not have an impact biological enzyme.
Although the biology enzyme destarch of the textile yarn-dyed fabric of starch starching has carried out years of researches and application, the α-amylase destarch that main employing is single at present.Find from long-term production practices, after the technique destarch process of the single α-amylase destarch of existing employing, the destarch effect of yarn-dyed fabric is undesirable, destarch grade only has 4-5 level, sizable gap is had with the 7-8 level required, cause the Boardy Feeling of fabric after destarch, have a strong impact on the quality of Yarn-dyed fabric.This is because starch forms primarily of amylopectin, as in cornstarch, amylopectin accounts for 74%, amylose only accounts for 26%; In farina, amylopectin accounts for 80%, and amylose only accounts for 20%.And α-amylase belongs to endo-type amylase, be the α-Isosorbide-5-Nitrae glycosidic bond cut off in a random way in starch polymer chain when it acts on starch, but can not α-1,6 glycosidic bond in hydrolyzing amylopectin, the α-Isosorbide-5-Nitrae glycosidic bond of contiguous branch point can not be hydrolyzed.
Debranching enzyme is the enzyme of α-1,6 glycosidic bond in the macromolecular compound such as hydrolyzing amylopectin, glycogen, a large amount of for starch industry, brewing industry and feedstuff industry at present.As the production for high glucose slurry in starch industry, conventional production methods adopts 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 the reaction time be reduced, and the purity of product can be improved; Production for high maltose syrup: maltose adopts α-amylase, beta amylase cohydrolysis starch to obtain, when saccharification, amylopectin can take off and props up and form short amylose fragments by interpolation debranching enzyme, be conducive to the effect of α-amylase, reduce the formation of β-limit dextrin, thus improve the content of maltose; In the saccharifying of brewing, barley and other auxiliary material saccharification be made completely, except the enzyme system in Fructus Hordei Germinatus, also add α-amylase and debranching enzyme etc.; For the cereal starch of feed, based on amylopectin, 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 is also known as glucoamylase, from irreducibility end hydrolysis a-1.4 glucoside bond, starch can be decomposed into glucose, also can slowly be hydrolyzed a-1.6 glucoside bond, be converted into glucose, also can hydrolyse dextrin, from the irreducibility end release glucose of dextrin.
Summary of the invention
Object of the present invention be exactly in starch starching, low-grade textile yarn-dyed fabric α-amylase pads-decatize banks up the technical problem of method destarch poor effect, propose a kind ofly to improve at present, 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 process: by fabric after the enzyme desizing immersion that pH value is 5.0 ~ 7.0, comprise α-amylase, debranching enzyme and carbohydrase is rolled, then process of banking up; The described liquid carrying rate banking up process is 50 ~ 120%, and the environment temperature of process of banking up is 40 ~ 70 DEG C, and the time of banking up is 45 ~ 120min;
3) go out ferment treatment: remove organized enzyme residual in fabric;
4) wash, dry: by the cold water washing clean post-drying of fabric through 20 ~ 40 DEG C.
The present invention adopts the textile yarn-dyed fabric of starch starching first pads by the compound destarch enzyme liquid of α-amylase, debranching enzyme and carbohydrase three common combination, then carries out banking up, go out enzyme and washing.
Because amylase generally not easily decomposes uncooked amylum or sclerosis starch, the present invention adopts hot-water pretreatment that starch serous coat can be impelled swelling, enzyme liquid can penetrate in serous coat preferably, adds enzyme and contacts with the effective of starch size, is more conducive to the decomposition of enzyme to starch.Banking up is the important means reaching enzyme desizing treatment effect, and in general, in the field of activity of destarch enzyme, the temperature of banking up is high, then the time is shorter; The temperature of banking up is low, then 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, enzyme can be made fully to act synergistically with starch in optimum temperature range, thoroughly decomposed by the starch size on yarn-dyed fabric, 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 process fabric is high; soft; particularly the colourity of PROCESS FOR TREATMENT waste water of the present invention, pH value and COD value are far below traditional handicraft, are conducive to the protection of ecological environment, also significantly reduce the burden of sewage disposal.And the present invention is owing to have employed the continuous processing technique padding-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 higher than 9 time, the stereochemical structure of enzyme can be made to destroy and lose activity, improve the pH value enzyme that goes out and have the advantages that enzyme-removal temperature is low, enzyme efficiency of going out is high, and any impact is not had on color thermally sensitive on yarn-dyed fabric, but webbing alkalescence can be made, therefore, go out after enzyme and will fully wash; Equally, also can make the space structure of enzyme, even chemical destruction when temperature is elevated to 85 ~ 100 DEG C and loses activity, improve the temperature enzyme that goes out and also there is the high feature of enzyme efficiency of going out, and yarn-dyed fabric band alkalescence can not be made, any impact is not had on color alkali-sensitive on yarn-dyed fabric.
Therefore, the present invention's ferment treatment that goes out has two kinds of modes, a kind of is improve pH value to carry out going out the method for enzyme: first by the hot water storgae washing of the fabric of heap postpone through 70 ~ 80 DEG C, and then the starch products after being decomposed by enzyme on the cold rinse bank eccysis fabric of 20 ~ 40 DEG C, then fabric is padded process through the sodium hydrate aqueous solution that pH is 9 ~ 10.
When adopt improve pH value carry out going out the method for enzyme time, 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 enzyme effect of going out is bad; Naoh concentration is too high, though the enzyme effect of going out had, and the too high color that may affect on yarn-dyed fabric of pH, and add 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 the destarch process of enzyme to yarn-dyed fabric is incubated process of banking up, after enzyme desizing, the starch be degraded still remains on yarn-dyed fabric, so need after destarch to carry out multistep washing (first hot water wash, then cold wash), to remove the starch size that yarn-dyed fabric has been degraded.The effect of enzyme of going out is by improving temperature or pH value, making enzyme lose activity.
Fully remove the starch catabolite after yarn-dyed fabric is decomposed by enzyme 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 process be with starch size starching by more than 11.7tex in weft yarn is made into, 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 α-1 in starch polymer chain at random, 4 glycosidic bonds, debranching enzyme hydrolyzing amylopectin α-1,6 glycosidic bonds, carbohydrase is from the synergy of irreducibility end hydrolysis a-1.4 glucoside bond, improve the decomposition efficiency Sum decomposition speed of starch size, improve the destarch effect of yarn-dyed fabric.
Can also comprise bleeding agent in enzyme desizing liquid of the present invention, 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, be utilize added by enter the wetting osmosis of bleeding agent, make enzyme fully penetrate into fabric and yarn interior, improve the decomposition removal effect of enzyme to fabric and yarn interior starch size.
Preferred bleeding agent is nonyl alcohol polyoxyethylene ether or octyl group alcohol polyoxyethylene ether or lauryl sodium sulfate.
In order to improve the wetting of yarn-dyed fabric and permeance property, making the starch serous coat of fabric and yarn interior fully swelling, improving the decomposition of follow-up ferment treatment 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, warp count 480/10cm, weft count 275.5/10cm.Grey cloth is through starch size starching process.
Desizing flow scheme design: textile yarn-dyed fabric pad after hot-water pretreatment complex enzyme liquid, insulation bank 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 controlling fabric is 40 ~ 70%, then enters rear road compound biological enzyme desizing liquid and carries out destarch process.
2, compound bio enzyme desizing process:
Be prepared in advance enzyme desizing liquid: will add α-amylase, debranching enzyme, carbohydrase and bleeding agent in 1kg water, makes 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 with pH value to 5 ~ 6.0 of acetic acid adjustment mixed solution, mixed solution is placed in and pads in groove, heat up and be incubated to 60 DEG C.
Fabric after hot-water pretreatment is padded through this process of banking up after drill traverse is rolled.
Bank up process fabric liquid carrying rate 70% ~ 105%, environment temperature is 65 ~ 70 DEG C, and 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 front washing of the enzyme that goes out:
First by the fabric of heap postpone through the hot water trough washery of 70 ~ 80 DEG C, and then through the cold rinse bank washing of 20 ~ 40 DEG C, with the starch products after abundant eccysis fabric is decomposed by enzyme.
4, adopt and improve the method for pH value and to go out enzyme:
In rinsing bowl, add water, and add the NaOH of about 0.5g/L ~ 1.0g/L, the pH value of liquid in rinsing bowl is brought up to 9 ~ 10, then fabric is padded process in this rinsing bowl.
5, to go out enzyme after washing, oven dry:
Cold water is adopted fully to wash, then the drying in oven of 100 ~ 105 DEG C in the fabric after the ferment treatment that goes out.
Textile yarn-dyed fabric after above-mentioned PROCESS FOR TREATMENT, the capillary effect after drying at 105 DEG C 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%, and before and after process, the K/S value of yarn-dyed fabric is unchanged.
Two, embodiment 2:
Textile yarn-dyed fabric grey cloth specification: 14.5tex × 14.5tex, warp count 480/10cm, weft count 275.5/10cm.Grey cloth is through starch size starching process.
Desizing flow scheme design: textile yarn-dyed fabric pad after hot-water pretreatment be made up of single α-amylase enzyme liquid, insulation bank up, hot water wash (the double enzyme that goes out), cold wash.
Concrete steps:
1, hot-water pretreatment:
90 DEG C are warming up to after being mixed with 1kg water by 20g bleeding agent.Bleeding agent selects 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 controlling fabric is 40%-70%, then enters rear road compound biological enzyme desizing liquid and carries out destarch process.
2, compound bio enzyme desizing process:
Be prepared in advance enzyme desizing liquid: will add α-amylase, debranching enzyme and carbohydrase in 1kg water, makes in mixed solution containing α-amylase 2 ~ 5.5g/L, debranching enzyme 2g ~ 5.0/L, carbohydrase 0.5 ~ 4g/L.And with pH value to 6.0 ~ 7.0 of acetic acid adjustment mixed solution, mixed solution is placed in and pads in groove.
Fabric after hot-water pretreatment is padded through this process of banking up after drill traverse is rolled.
Bank up process fabric liquid carrying rate 80 ~ 120%, the environment temperature of banking up is 40 ~ 45 DEG C, and the time of banking up is 100 ~ 120min.
3, high temperature washes the enzyme that goes out:
The hot water storgae washing of the fabric of heap postpone through 85 ~ 100 DEG C to be gone out enzyme, the starch products after fully eccysis fabric being decomposed by enzyme on the one hand, utilizes the effect of high-temperature water by enzyme-deactivating on the other hand.
4, wash, dry:
Fabric after the ferment treatment that goes out is adopted the abundant washes clean of cold water, then the drying in oven of 100 ~ 105 DEG C.
The capillary effect 4.2cm/30min of textile yarn-dyed fabric after above-mentioned process 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 process, the K/S value of yarn-dyed fabric is unchanged.
Claims (8)
1. a method for textile yarn-dyed fabric destarch, comprises the following steps:
1) preliminary treatment: textile yarn-dyed fabric is through hot-water pretreatment;
2) compound bio enzyme desizing process: by fabric after the enzyme desizing immersion that pH value is 5.0 ~ 7.0, comprise α-amylase, debranching enzyme and carbohydrase is rolled, then process of banking up; The described liquid carrying rate banking up process is 50 ~ 120%, and the environment temperature of process of banking up is 40 ~ 70 DEG C, and the time of banking up is 45 ~ 120min;
3) go out ferment treatment: remove organized enzyme residual in fabric;
4) wash, dry: by the cold water washing clean post-drying of fabric through 20 ~ 40 DEG C;
The ferment treatment that goes out described in it is characterized in that is: first by the hot water storgae washing of the fabric of heap postpone through 70 ~ 80 DEG C, and then the starch products after being decomposed by enzyme on the cold rinse bank eccysis fabric of 20 ~ 40 DEG C, then fabric is padded process through the sodium hydrate aqueous solution that pH is 9 ~ 10;
In described sodium hydrate aqueous solution, the content of NaOH is 0.5 ~ 1.0g/L.
2. a method for textile yarn-dyed fabric destarch, comprises the following steps:
1) preliminary treatment: textile yarn-dyed fabric is through hot-water pretreatment;
2) compound bio enzyme desizing process: by fabric after the enzyme desizing immersion that pH value is 5.0 ~ 7.0, comprise α-amylase, debranching enzyme and carbohydrase is rolled, then process of banking up; The described liquid carrying rate banking up process is 50 ~ 120%, and the environment temperature of process of banking up is 40 ~ 70 DEG C, and the time of banking up is 45 ~ 120min;
3) go out ferment treatment: remove organized enzyme residual in fabric;
4) wash, dry: by the cold water washing clean post-drying of fabric through 20 ~ 40 DEG C;
The ferment treatment that goes out described in it is characterized in that is: by the hot water treatment of the fabric of heap postpone through 85 ~ 100 DEG C.
3. method according to claim 1 or 2, it is characterized in that described textile yarn-dyed fabric be with starch size starching by more than 11.7tex in weft yarn is made into, low-grade yarn-dyed fabric.
4. method according to claim 3, 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.
5. method according to claim 1 or 2, 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.
6. method according to claim 5, 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.
7. method according to claim 1 or 2, is characterized in that in pretreated hot water, add fatty alcohol-polyoxyethylene ether, metal carboxylate anion surfactant or Sulfates anion surfactant.
8. method according to claim 7, 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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