CN108086011B - Stretch yarn and dyeing method thereof - Google Patents
Stretch yarn and dyeing method thereof Download PDFInfo
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- CN108086011B CN108086011B CN201711341834.9A CN201711341834A CN108086011B CN 108086011 B CN108086011 B CN 108086011B CN 201711341834 A CN201711341834 A CN 201711341834A CN 108086011 B CN108086011 B CN 108086011B
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- 238000004043 dyeing Methods 0.000 title claims abstract description 163
- 238000000034 method Methods 0.000 title claims abstract description 114
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 19
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 19
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 239000000975 dye Substances 0.000 claims abstract 2
- 238000012546 transfer Methods 0.000 claims description 34
- 239000003795 chemical substances by application Substances 0.000 claims description 29
- 238000001035 drying Methods 0.000 claims description 22
- 239000007800 oxidant agent Substances 0.000 claims description 16
- 238000007670 refining Methods 0.000 claims description 16
- 230000001590 oxidative effect Effects 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 30
- 239000007788 liquid Substances 0.000 description 20
- 235000017550 sodium carbonate Nutrition 0.000 description 15
- 229910000029 sodium carbonate Inorganic materials 0.000 description 15
- 238000007599 discharging Methods 0.000 description 14
- 239000002994 raw material Substances 0.000 description 12
- 235000011121 sodium hydroxide Nutrition 0.000 description 10
- 230000018044 dehydration Effects 0.000 description 9
- 238000006297 dehydration reaction Methods 0.000 description 9
- 239000004033 plastic Substances 0.000 description 8
- 238000004804 winding Methods 0.000 description 8
- 239000012752 auxiliary agent Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000009941 weaving Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003518 caustics Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 235000013351 cheese Nutrition 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000002903 organophosphorus compounds Chemical group 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- -1 phosphate ester Chemical class 0.000 description 2
- 229920000151 polyglycol Polymers 0.000 description 2
- 239000010695 polyglycol Substances 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
- D06P1/613—Polyethers without nitrogen
- D06P1/6138—Polymerisation products of glycols, e.g. Carbowax, Pluronics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/24—Polyamides; Polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention relates to an elastic yarn and a dyeing method thereof. The dyeing method comprises the steps of obtaining elastic yarn, and then performing tube loosening, dyeing and post-process treatment on the elastic yarn; wherein, loosening the cylinder: the elastic yarn is loosened by a loose bobbin with the density of 0.2g/cm3‑0.4g/cm3(ii) a Dyeing: transferring the elastic yarn after the bobbin loosening procedure to a dyeing bobbin, wherein the outer diameter of the dyeing bobbin is smaller than that of the bobbin loosening bobbin; and then placing the dyed bobbin in dyeing equipment for dyeing, wherein the dyeing process comprises the following steps: adding water, dye and sodium sulfate into the dyeing equipment, and preserving heat for 1-30min at the temperature of 45-55 ℃; then heating to 60-85 deg.C, and keeping the temperature for 5-30 min; adding alkali, and keeping the temperature for 20-80 min. The dyeing method can effectively solve the problem that the elastic yarn shrinks in the dyeing process, improves the dyeing uniformity and has simple process.
Description
Technical Field
The invention relates to yarn processing, in particular to elastic yarn and a dyeing method thereof.
Background
The elastic fabric has the advantages that due to the effect of elasticity, the hand feeling and the drapability of the fabric are obviously improved, the comfort and the fit of related clothes are improved, and the fabric is popular with consumers. In the dyeing process of the elastic yarn, the phenomena of uneven dyeing and dyeing impermeability are easy to appear in the color, so that the yarn loss is large, and the production cost is high.
At present, the elastic yarn mainly comprises the following traditional process methods:
(1) the cotton can loosening equipment dyeing method comprises the following steps:
the process comprises the following steps: loosening bobbin, pretreatment, dyeing, dehydration, drying and spooling
By using cotton bobbin loosening equipment, the density of the elastic yarn blank yarn is limited, the density is higher after the yarn is contracted in the bobbin dyeing process, and the dyeing quality problem is obvious.
(2) The dry overturning dyeing method of the cotton can loosening equipment comprises the following steps:
the process comprises the following steps: loosening drum, pretreatment, dehydration, drying, loosening drum, dyeing, dehydration, drying and spooling
Since the stretch yarn is shrunk once at a higher temperature in the pretreatment, the density is higher but the yarn is not dyed, and quality problems cannot be caused. And then, before dyeing, overturning is arranged, so that the density of the bobbin during dyeing is reduced, and the dyeing quality of the stretch yarn can be improved to a certain extent. However, the method has long production flow, the density after drying cannot be effectively monitored, and the quality problem is reduced but not ideal.
Disclosure of Invention
Therefore, there is a need for a dyeing method for elastic yarn, which can effectively improve the shrinkage problem of the elastic yarn during the dyeing process, improve the dyeing uniformity and has a simple process.
A dyeing method of elastic yarn comprises the steps of obtaining the elastic yarn, and then performing tube loosening, dyeing and post-process treatment on the elastic yarn; wherein,
loosening the barrel: the elastic yarn is loosened by a loose bobbin with the density of 0.2g/cm3-0.4g/cm3；
Dyeing: transferring the elastic yarn after the bobbin loosening procedure to a dyeing bobbin, wherein the outer diameter of the dyeing bobbin is smaller than that of the bobbin loosening bobbin; and then placing the dyed bobbin in dyeing equipment for dyeing, wherein the dyeing process comprises the following steps:
adding water and dye into the dyeing equipment, and keeping the temperature at 45-55 ℃ for 1-30 min; then heating to 60-85 deg.C, and keeping the temperature for 5-30 min; adding alkali, and keeping the temperature for 20-80 min.
In the above-described method for dyeing elastic yarn, the kind of elastic yarn is not limited, and any elastic yarn such as cotton elastic yarn, nylon elastic yarn, and polyester elastic yarn may be used.
In one embodiment, the density of the elastic yarn after transferring in the dyeing process is 0.13g/cm3～0.26g/cm3。
In one embodiment, in the tube loosening process, the single yarn weight is 0.3-1 kg.
In one embodiment, in the dyeing process, the temperature is increased to 60-85 ℃ at a temperature increase rate of 0.5-2 ℃/min.
In one embodiment, the dyeing process uses a bath ratio of 1: 4-25. The types and the dosage of the dye and the alkali can be selected according to requirements, wherein the alkali can be sodium carbonate (sodium carbonate) generally, and the dosage is 2-25 g/L.
In one embodiment, in the dyeing process, water and dye are added, and a dyeing assistant is also added, wherein the dyeing assistant is sodium sulfate (anhydrous sodium sulphate), and the dosage of the dyeing assistant is 2-90 g/L.
In one embodiment, in the dyeing process, the dyeing process further includes a pretreatment step:
before adding water and dye into the dyeing equipment, adding finishing liquid to treat for 15-45min at 90-125 ℃, wherein the finishing liquid comprises a refining agent with the concentration of 0.5-2g/L, a water softener with the concentration of 0.5-1g/L, an alkaline agent with the concentration of 1-2g/L and an oxidant with the concentration of 2-5 g/L;
then washing with water, adding water, acid with concentration of 0.5-1.5g/L, and deoxyenzyme with concentration of 0.1-0.3g/L, and keeping the temperature at 45-55 deg.C for 10-20 min.
In one embodiment, the refining agent is a mixture of alkyl polyglycol ethers; the water softener is an organic phosphorus compound; the alkaline agent is sodium hydroxide (flake caustic soda) and the oxidant is H2O2。
In one embodiment, the acid is acetic acid and the deoxyenzyme is ENH 0801.
In one embodiment, in the dyeing process, the dyeing process further includes a post-treatment step:
adding alkali, keeping the temperature for 20-80min, adding water and soaping agent with concentration of 0.5-2g/L, and treating at 70-110 deg.C for 5-20 min.
In one embodiment, the soaping agent is an organic phosphate ester.
In one embodiment, the outer diameter of the pine cone is 75mm-260 mm; the outer diameter of the dyeing bobbin is 60mm-85 mm.
In one embodiment, the external diameter of the pine cone is 75mm-149mm or 151mm-260 mm.
In one embodiment, in the bobbin loosening process, a transfer layer is coated on the outer side of the bobbin loosening process, and then the elastic yarn is loosened on the outer side of the transfer layer;
in the dyeing procedure, the transfer layer is turned outwards to wrap the elastic yarn after the bobbin is loosened, the bobbin is taken out, and then the transfer layer wrapping the elastic yarn after the bobbin is loosened is transferred to the dyeing bobbin.
In one embodiment, the material of the transfer layer is chemical fiber fabric, cotton fabric or elastic yarn fabric.
In one embodiment, the post-process treatment comprises drying: and drying the dyed stretch yarn until the moisture regain is not less than 5%.
The invention also provides the elastic yarn prepared by the dyeing method of the elastic yarn.
Compared with the prior art, the invention has the following beneficial effects:
the dyeing method of the elastic yarn adopts a certain loose bobbin density to firstly loosen the elastic yarn on a loose bobbin, wherein the elastic yarn is in a stretching state, and then the elastic yarn is integrally and directly transferred to a dyeing bobbin with the outer diameter smaller than that of the loose bobbin to provide a shrinking space for the elastic yarn, so that the elastic yarn stretched by the loose bobbin realizes pre-shrinking on the dyeing bobbin, and the density of the elastic yarn is reduced to a proper range. On the basis, the transferred elastic yarn is dyed by combining a certain dyeing process, so that the stability of color quality is ensured, the dyeing process has better color reproducibility, and the uneven dyeing and the dyeing opacity ratio of the elastic yarn are obviously reduced.
In addition, compared with the traditional process method, the dyeing method does not need to perform repeated tube loosening and high-temperature pretreatment, has simple flow and short production period, can be produced on the existing tube loosening and winding equipment, and does not need additional equipment investment.
Furthermore, certain pretreatment and post-treatment steps are combined in the dyeing process, so that the yarn can reach certain whiteness and good capillary effect, and the uneven dyeing and the dyeing opacity ratio of the elastic yarn are further reduced.
Furthermore, in the bobbin loosening process, the transfer layer is firstly coated on the outer side of the bobbin loosening process, and then when the elastic yarns are transferred in the dyeing process, the transfer layer can be used for wrapping the elastic yarns, so that the transfer is more convenient, the problem that inner-layer yarns of the elastic yarns are easy to disorder in the transfer process can be solved, and the winding efficiency is improved. In addition, the fabric made of a certain material is used as the transfer layer, and the influence of the existence of the transfer layer on the dyeing quality can be avoided by matching with the dyeing process.
Detailed Description
The stretch yarn and the dyeing method thereof according to the present invention will be described in further detail with reference to specific examples.
The refining agent adopted in the embodiment of the invention is an alkyl polyglycol ether mixture which is purchased from EPD-C of Kekai company.
The water softener is an organophosphorus compound available from CHD0801 from Fubao corporation.
The oxidant is H2O2。
Deoxygenases are enzyme derivatives, available from ENH0801 from fubao.
The soaping agent is an organic phosphate ester available from DM-1573 of Germany.
Example 1
This example describes a method for dyeing stretch yarn, using CF50s/1+ XLA 42D stretch yarn, in a 1400mm diameter dye vat. The dyeing method comprises the following specific steps:
step 1), preparing a plastic non-porous bobbin (bobbin loosening bobbin) with the outer diameter of 120mm in a bobbin loosening process;
step 2) a barrel loosening process is carried out, wherein a polyester material transfer layer (in a barrel shape with two open ends) is wrapped on a 120mm plastic non-porous barrel;
step 3) loosening the elastic yarn on a machine table of a plastic non-porous bobbin with the outer diameter of 120mm wrapped with a transfer layer;
and 4) stopping loosening the cylinder by the machine after the weight of the loose cylinder reaches 0.6kg, wherein the density of the loose cylinder is 0.28g/cm3；
Step 5) manually turning the transfer layer on the plastic non-porous bobbin from inside to outside to wrap the elastic yarn on the outer layer; then the elastic yarn and the transfer layer are manually transferred to a perforated dyeing bobbin with the outer diameter of 64 mm; the density after transfer was 0.19g/cm3；
Step 6), arranging cage installation, carrying out visual inspection after cage installation, and enabling the transferred dyeing bobbin coated with the elastic yarn and the transfer layer to be free of hole leakage;
step 7), after the OK is checked, putting the whole cage into a dye vat, and arranging pretreatment; the pretreatment finishing liquid contains a refining agent, flake caustic, a water softener and an oxidant, and the solvent is water, wherein the dosage of the refining agent is 1.5G/L, the dosage of the water softener is 0.8G/L, the concentration of the flake caustic is 1.5G/L, and the dosage of the oxidant is 5.0G/L; treating at 110 deg.C for 30min, and draining; then 2 times of water washing are arranged; adding water, adding auxiliary agent HAC 0.8G/L and deoxyenzyme 0.25G/L, keeping the temperature at 55 deg.C for 10min, and draining;
step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 55 ℃ for 15min, then heating to 60 ℃ at the heating rate of 1.5 ℃/min, keeping the temperature for 20min, then adding soda ash, keeping the temperature for 60min, and then discharging the liquid; wherein 150% of dye used in Nippon Sumitomo BL BRF, 4.8% of OWF, 80g/L of anhydrous sodium sulphate, 20g/L of soda ash, 380KG of yarn weight and bath ratio are as follows: 14.7;
step 9) post-treatment: treating the soaping agent at 2.0G/L for 20 minutes at the temperature of 95 ℃;
step 10) dehydration: after the post-treatment OK, dewatering on a centrifugal dehydrator;
step 11), drying: arranging and drying the bobbins, wherein the moisture regain is 10%;
step 12) spooling: and rewinding the dried bobbin on a winding device to a bobbin required by weaving.
Example 2
This example is a dyeing method for stretch yarn, using raw materials and dyeing method similar to example 1, with the main differences:
the density of the loose tube after the loose tube in the step 4) is 0.2g/cm3；
The density after the transfer in the step 5) was 0.13g/cm3；
Step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 50 ℃ for 1min, heating to 70 ℃ at the heating rate of 1 ℃/min, keeping the temperature for 30min, adding sodium carbonate, keeping the temperature for 40min, and discharging the liquid.
Example 3
This example is a dyeing method for stretch yarn, using raw materials and dyeing method similar to example 1, with the main differences:
the density of the loose tube after the loose tube in the step 4) is 0.4g/cm3；
The density after the transfer in the step 5) was 0.26g/cm3；
Step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 45 deg.C for 30min, heating to 85 deg.C at a rate of 0.5 deg.C/min, keeping the temperature for 5min, adding sodium carbonate, keeping the temperature for 20min, and discharging the liquid.
Example 4
In this example, a method for dyeing stretch yarn, CF50s/1+ lycra 40D stretch yarn was selected and dyed in a dye vat with a diameter of 1800 mm. The dyeing method comprises the following specific steps:
step 1), preparing a plastic non-porous bobbin (bobbin loosening bobbin) with the outer diameter of 230mm in a bobbin loosening process;
step 2) a barrel loosening process is carried out, wherein a polyester material transfer layer (in a shape of a barrel with two open ends) is wrapped on a 230mm plastic non-porous barrel;
step 3) loosening the elastic yarn on a machine table of a plastic non-porous bobbin with the outer diameter of 230mm wrapped with a transfer layer;
and 4) stopping loosening the cylinder by the machine after the weight of the cylinder is 0.6kg, and loosening the cylinder at the momentThe density was 0.30g/cm3；
Step 5) manually turning the transfer layer on the plastic non-porous bobbin from inside to outside to wrap the elastic yarn on the outer layer; then the elastic yarn and the transfer layer are manually transferred to a perforated dyeing bobbin with the outer diameter of 76 mm; the density after transfer was 0.20g/cm3；
Step 6), arranging cage installation, carrying out visual inspection after cage installation, and enabling the transferred dyeing bobbin coated with the elastic yarn and the transfer layer to be free of hole leakage;
step 7), after the OK is checked, putting the whole cage into a dye vat, and arranging pretreatment; the pretreatment finishing liquid contains a refining agent, flake caustic, a water softener and an oxidant, and the solvent is water, wherein the dosage of the refining agent is 1.5G/L, the dosage of the water softener is 0.8G/L, the concentration of the flake caustic is 1.5G/L, and the dosage of the oxidant is 5.0G/L; treating at 110 deg.C for 30min, and draining; then 2 times of water washing are arranged; adding water, adding auxiliary agent HAC 0.8G/L and deoxyenzyme 0.25G/L, keeping the temperature at 55 deg.C for 10min, and draining;
step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 55 ℃ for 15min, then heating to 60 ℃ at the heating rate of 1.5 ℃/min, keeping the temperature for 20min, then adding soda ash, keeping the temperature for 60min, and then discharging the liquid; wherein, the dye is used for Nippon Sumitomo BL R SPE, the OWF is 2.5 percent, the anhydrous sodium sulphate is 60g/L, the soda is 20g/L, the yarn weight is 317KG, the bath ratio is: 17.7;
step 9) post-treatment: treating the soaping agent at 2.0G/L for 20 minutes at the temperature of 95 ℃;
step 10) dehydration: after the post-treatment OK, dewatering on a centrifugal dehydrator;
step 11), drying: arranging and drying the bobbins, wherein the moisture regain is 10%;
step 12) spooling: and rewinding the dried bobbin on a winding device to a bobbin required by weaving.
Example 5
This example is a dyeing method for stretch yarn, using raw materials and dyeing method similar to example 4, with the main differences:
the density of the loose tube after the loose tube in the step 4) is 0.22g/cm3；
Density after transfer in step 5) was 0.15g/cm3；
Step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 50 ℃ for 1min, heating to 70 ℃ at the heating rate of 1 ℃/min, keeping the temperature for 30min, adding sodium carbonate, keeping the temperature for 40min, and discharging the liquid.
Example 6
This example is a dyeing method for stretch yarn, using raw materials and dyeing method similar to example 4, with the main differences:
the density of the loose tube after the loose tube in the step 4) is 0.36g/cm3；
The density after the transfer in the step 5) was 0.25g/cm3；
Step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 45 deg.C for 30min, heating to 85 deg.C at a rate of 0.5 deg.C/min, keeping the temperature for 5min, adding sodium carbonate, keeping the temperature for 20min, and discharging the liquid.
Comparative example 1
This comparative example is a dyeing method for stretch yarn, using raw materials and a dyeing method similar to example 1, comprising the following steps:
step 1) the loose tube process is directly to arrange the loose tube on a machine table of a dyeing tube with holes and the outer diameter of 64mm, and the density of the loose tube is 0.35g/cm3(ii) a The weight of the loose tube is 0.6 kg;
step 2), arranging a cage on a dyeing platform after loosening the cylinder, placing the yarn into a dye vat after checking OK, and arranging pretreatment; the pretreatment finishing liquid contains a refining agent, caustic soda flakes, a water softener and an oxidant, and the solvent is water; wherein the dosage of the refining agent is 1.5G/L, the dosage of the water softener is 0.8G/L, the concentration of the flake caustic soda is 1.5G/L, the dosage of the oxidizing agent is 5.0G/L, and the water is discharged after being treated for 30min at the temperature of 110 ℃; then 2 times of water washing are arranged; adding water, adding auxiliary agent HAC 0.8G/L and deoxyenzyme 0.25G/L, keeping the temperature at 55 deg.C for 10min, and draining;
after the pretreatment of the step 3), arranging a dyeing platform for cylinder discharging, dewatering and drying, and then sending the yarn to a bobbin loosening workshop;
step 4) after receiving the pre-treated yarn in the tube loosening workshop, loosening the tube with the density of 0.30g/cm3；
Step 5), the dyeing platform receives the pre-treated yarn after the loose tube and arranges dyeing; adding water, dye and anhydrous sodium sulphate, keeping the temperature at 55 ℃ for 15min, then heating to 60 ℃ at the heating rate of 1.5 ℃/min, keeping the temperature for 20min, then adding soda ash, keeping the temperature for 60min, and then discharging the liquid;
step 6) post-treatment: treating the soaping agent at 2.0G/L for 20 minutes at the temperature of 95 ℃;
step 7) dehydration: after the post-treatment OK, dewatering on a centrifugal dehydrator;
step 8), drying: arranging and drying the bobbins, wherein the moisture regain is 10%;
step 9) spooling: and rewinding the dried bobbin on a winding device to a bobbin required by weaving.
Comparative example 2
This comparative example is a dyeing method for stretch yarn, using raw materials and a dyeing method similar to example 1, comprising the following steps:
step 1) the loose tube process is directly to arrange the loose tube on a machine table of a dyeing tube with holes and the outer diameter of 64mm, and the density of the loose tube is 0.35g/cm3(ii) a The weight of the loose tube is 0.6 kg;
step 2), arranging a cage on a dyeing platform after loosening the cylinder, placing the yarn into a dye vat after checking OK, and arranging pretreatment; the pretreatment finishing liquid contains a refining agent, caustic soda flakes, a water softener and an oxidant, and the solvent is water; wherein the dosage of the refining agent is 1.5G/L, the dosage of the water softener is 0.8G/L, the concentration of the flake caustic soda is 1.5G/L, the dosage of the oxidizing agent is 5.0G/L, and the water is discharged after being treated for 30min at the temperature of 110 ℃; then 2 times of water washing are arranged; adding water, adding auxiliary agent HAC 0.8G/L and deoxyenzyme 0.25G/L, keeping the temperature at 55 deg.C for 10min, and draining;
step 3), the dyeing platform receives the pre-treated yarn after the loose tube and arranges dyeing; adding water, dye and anhydrous sodium sulphate, keeping the temperature at 55 ℃ for 15min, then heating to 60 ℃ at the heating rate of 1.5 ℃/min, keeping the temperature for 20min, then adding soda ash, keeping the temperature for 60min, and then discharging the liquid;
step 4), post-treatment: treating the soaping agent at 2.0G/L for 20 minutes at the temperature of 95 ℃;
step 5) dehydration: after the post-treatment OK, dewatering on a centrifugal dehydrator;
step 6), drying: arranging and drying the bobbins, wherein the moisture regain is 10%;
step 7) spooling: and rewinding the dried bobbin on a winding device to a bobbin required by weaving.
Comparative example 3
This comparative example is a dyeing process for stretch yarn using raw materials and a dyeing process similar to example 1, with the main differences:
step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 50 ℃ for 15min, heating to 90 ℃ at the heating rate of 0.5 ℃/min, keeping the temperature for 20min, adding sodium carbonate, keeping the temperature for 60min, and discharging the liquid.
Comparative example 4
This comparative example is a dyeing process for stretch yarn using raw materials and a dyeing process similar to example 1, with the main differences:
the density of the loose tube after the loose tube in the step 4) is 0.6g/cm3；
The density after the transfer in the step 5) was 0.32g/cm3。
Comparative example 5
This comparative example is a dyeing method for stretch yarn, using raw materials and a dyeing method similar to example 4, comprising the following steps:
step 1) the loose tube process is directly to arrange the loose tube on a machine table of a dyeing tube with holes and the outer diameter of 76mm, and the density of the loose tube is 0.36g/cm3(ii) a The weight of the loose tube is 0.6 kg;
step 2), arranging a cage on a dyeing platform after loosening the cylinder, placing the yarn into a dye vat after checking OK, and arranging pretreatment; the pretreatment finishing liquid contains a refining agent, caustic soda flakes, a water softener and an oxidant, and the solvent is water; wherein the dosage of the refining agent is 1.5G/L, the dosage of the water softener is 0.8G/L, the concentration of the flake caustic soda is 1.5G/L, the dosage of the oxidizing agent is 5.0G/L, and the water is discharged after being treated for 30min at the temperature of 110 ℃; then 2 times of water washing are arranged; adding water, adding auxiliary agent HAC 0.8G/L and deoxyenzyme 0.25G/L, keeping the temperature at 55 deg.C for 10min, and draining;
after the pretreatment of the step 3), arranging a dyeing platform for cylinder discharging, dewatering and drying, and then sending the yarn to a bobbin loosening workshop;
step 4) after receiving the pre-treated yarn in the tube loosening workshop, loosening the tube with the density of 0.33g/cm3；
Step 5), the dyeing platform receives the pre-treated yarn after the loose tube and arranges dyeing; adding water, dye and anhydrous sodium sulphate, keeping the temperature at 55 ℃ for 15min, then heating to 60 ℃ at the heating rate of 1.5 ℃/min, keeping the temperature for 20min, then adding soda ash, keeping the temperature for 60min, and then discharging the liquid;
step 6) post-treatment: treating the soaping agent at 2.0G/L for 20 minutes at the temperature of 95 ℃;
step 7) dehydration: after the post-treatment OK, dewatering on a centrifugal dehydrator;
step 8), drying: arranging and drying the bobbins, wherein the moisture regain is 10%;
step 9) spooling: and rewinding the dried bobbin on a winding device to a bobbin required by weaving.
Comparative example 6
This comparative example is a dyeing method for stretch yarn, using raw materials and a dyeing method similar to example 4, comprising the following steps:
step 1) the loose tube process is directly to arrange the loose tube on a machine table of a dyeing tube with holes and the outer diameter of 76mm, and the density of the loose tube is 0.36g/cm3(ii) a The weight of the loose tube is 0.6 kg;
step 2), arranging a cage on a dyeing platform after loosening the cylinder, placing the yarn into a dye vat after checking OK, and arranging pretreatment; the pretreatment finishing liquid contains a refining agent, caustic soda flakes, a water softener and an oxidant, and the solvent is water; wherein the dosage of the refining agent is 1.5G/L, the dosage of the water softener is 0.8G/L, the concentration of the flake caustic soda is 1.5G/L, the dosage of the oxidizing agent is 5.0G/L, and the water is discharged after being treated for 30min at the temperature of 110 ℃; then 2 times of water washing are arranged; adding water, adding auxiliary agent HAC 0.8G/L and deoxyenzyme 0.25G/L, keeping the temperature at 55 deg.C for 10min, and draining;
step 3), the dyeing platform receives the pre-treated yarn after the loose tube and arranges dyeing; adding water, dye and anhydrous sodium sulphate, keeping the temperature at 55 ℃ for 15min, then heating to 60 ℃ at the heating rate of 1.5 ℃/min, keeping the temperature for 20min, then adding soda ash, keeping the temperature for 60min, and then discharging the liquid;
step 4), post-treatment: treating the soaping agent at 2.0G/L for 20 minutes at the temperature of 95 ℃;
step 5) dehydration: after the post-treatment OK, dewatering on a centrifugal dehydrator;
step 6), drying: arranging and drying the bobbins, wherein the moisture regain is 10%;
step 7) spooling: and rewinding the dried bobbin on a winding device to a bobbin required by weaving.
Comparative example 7
This comparative example is a dyeing process for stretch yarn using raw materials and a dyeing process similar to example 4, with the main differences:
step 8) dyeing: adding water, dye and anhydrous sodium sulphate, keeping the temperature at 50 ℃ for 15min, heating to 90 ℃ at the heating rate of 0.5 ℃/min, keeping the temperature for 20min, adding sodium carbonate, keeping the temperature for 60min, and discharging the liquid.
Comparative example 8
This comparative example is a dyeing process for stretch yarn using raw materials and a dyeing process similar to example 4, with the main differences:
the density of the loose tube after the loose tube in the step 4) is 0.52g/cm3；
The density after the transfer in the step 5) was 0.38g/cm3。
Difference in color of inner and outer layers of the stretch yarn prepared by the dyeing methods of comparative examples 1 to 3 and comparative examples 1 to 4:
and selecting an American Alice X-Rite 7000A computer color measuring instrument to test the DE value of the color difference. Each dyeing method takes 1 cheese, and each cheese takes 10g yarn samples of the innermost layer and the outermost layer. The color difference DE of the inner yarn sample was measured under a D65 light source using the outer yarn sample as a standard. The smaller the DE value, the smaller the color difference between the inner layer and the outer layer of the cone. The computer color difference values tested are shown in table 1:
TABLE 1 computer color difference values for examples 1-3 and comparative examples 1-4
| Method of producing a composite material | DE value |
| Example 1 | 0.43 |
| Example 2 | 0.4 |
| Example 3 | 0.5 |
| Comparative example 1 | 0.66 |
| Comparative example 2 | 1.1 |
| Comparative example 3 | 0.7 |
| Comparative example 4 | 1.2 |
As can be seen from Table 1, the elastic yarn produced by the method of the invention has the advantages of minimal difference between the inside and the outside of the color, no twice tube loosening, short production flow and high efficiency.
The difference in color of the inner and outer layers of the stretch yarn prepared by the dyeing methods of comparative examples 4 to 6 and comparative examples 5 to 8 is shown in table 2:
TABLE 2 computer color difference values for examples 4-6 and comparative examples 5-8
| Method of producing a composite material | DE value |
| Example 4 | 0.48 |
| Example 5 | 0.42 |
| Example 6 | 0.55 |
| Comparative example 5 | 0.65 |
| Comparative example 6 | 1.3 |
| Comparative example 7 | 0.75 |
| Comparative example 8 | 1.5 |
As can be seen from Table 2, the elastic yarn produced by the method of the present invention has the minimum difference between the inside and the outside of the color, and the bobbin loosening is not performed twice, so the production flow is short, and the efficiency is high.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The dyeing method of the elastic yarn is characterized by comprising the steps of obtaining the elastic yarn, and then performing tube loosening, dyeing and post-process treatment on the elastic yarn; wherein,
loosening the barrel: the elastic yarn is loosened by a loose bobbin with the density of 0.2g/cm3-0.4g/cm3And the elastic yarn is in a stretching state;
dyeing: transferring the elastic yarn after the bobbin loosening process to a dyeing bobbin, wherein the outer diameter of the dyeing bobbin is smaller than that of the bobbin loosening bobbin, and the density of the elastic yarn transferred to the dyeing bobbin is 0.13g/cm3-0.26g/cm3(ii) a And then placing the dyed bobbin in dyeing equipment for dyeing, wherein the dyeing process comprises the following steps:
adding water, dye and sodium sulfate into the dyeing equipment, and preserving heat for 1-30min at the temperature of 45-55 ℃; then heating to 60-85 deg.C, and keeping the temperature for 5-30 min; adding alkali, and keeping the temperature for 20-80 min.
2. The method of dyeing an elastic yarn according to claim 1, wherein in the dyeing step, the density of the elastic yarn after being transferred to the dyeing bobbin is 0.13g/cm3-0.2g/cm3。
3. The method of dyeing an elastic yarn according to claim 1, wherein in the dyeing step, the temperature is raised to 60 to 85 ℃ at a temperature raising rate of 0.5 to 2 ℃/min.
4. The method for dyeing stretch yarn according to claim 1, wherein in the dyeing step, the dyeing process further comprises a pretreatment step of:
before the water, the dye and the sodium sulfate are added into the dyeing equipment, finishing liquor is added to be treated for 15-45min at the temperature of 90-125 ℃, wherein the finishing liquor comprises a refining agent with the concentration of 0.5-2g/L, a water softener with the concentration of 0.5-1g/L, an alkali agent with the concentration of 1-2g/L and an oxidant with the concentration of 2-5 g/L;
then washing with water, adding water, acid with concentration of 0.5-1.5g/L and deoxyenzyme with concentration of 0.1-0.3g/L, and keeping the temperature at 45-55 deg.C for 10-20 min.
5. The method for dyeing stretch yarn according to claim 1, wherein in the dyeing step, the dyeing process further comprises a post-treatment step of:
adding the alkali, keeping the temperature for 20-80min, adding water and soaping agent with the concentration of 0.5-2g/L, and treating at 70-110 ℃ for 5-20 min.
6. A method of dyeing a stretch yarn according to any one of claims 1 to 5, wherein the outer diameter of the bobbin is 75mm to 260 mm; the outer diameter of the dyeing bobbin is 60mm-85 mm.
7. The method for dyeing elastic yarn according to any one of claims 1 to 5, wherein in the step of releasing, a transfer layer is coated on the outer side of the release bobbin before releasing the elastic yarn on the outer side of the transfer layer;
in the dyeing procedure, the transfer layer is turned outwards to wrap the elastic yarn after the loose bobbin is wrapped, the loose bobbin is taken out, and then the transfer layer wrapped with the elastic yarn after the loose bobbin is transferred to the dyeing bobbin.
8. The method for dyeing elastic yarn according to claim 7, wherein the material of the transfer layer is chemical fiber fabric, cotton fabric or elastic yarn fabric.
9. The method of dyeing stretch yarn according to any one of claims 1 to 5, wherein the post-processing treatment comprises drying: and drying the dyed stretch yarn until the moisture regain is not less than 5%.
10. The stretch yarn produced by the method of dyeing stretch yarn of any one of claims 1-9.
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| CN114672943A (en) * | 2022-03-18 | 2022-06-28 | 广东溢达纺织有限公司 | Method for loosening flax cheese, dyeing method and dyed flax yarn |
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| CN102733207A (en) * | 2012-07-19 | 2012-10-17 | 天津田歌纺织有限公司 | Method for dyeing cheese prepared from polyester-cotton blending stretch yarn |
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| CN102733203A (en) * | 2012-07-09 | 2012-10-17 | 天津田歌纺织有限公司 | Dyeing method for cheese made of nylon stretch yarns |
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