CN113430754A - Production process for improving crease of knitted fabric - Google Patents
Production process for improving crease of knitted fabric Download PDFInfo
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- CN113430754A CN113430754A CN202110815106.7A CN202110815106A CN113430754A CN 113430754 A CN113430754 A CN 113430754A CN 202110815106 A CN202110815106 A CN 202110815106A CN 113430754 A CN113430754 A CN 113430754A
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- 239000004744 fabric Substances 0.000 title claims abstract description 194
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 67
- 238000005406 washing Methods 0.000 claims abstract description 54
- 238000004043 dyeing Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000007670 refining Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 21
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002253 acid Substances 0.000 claims abstract description 13
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 13
- 238000012797 qualification Methods 0.000 claims abstract description 5
- 230000000630 rising effect Effects 0.000 claims abstract description 4
- 239000000110 cooling liquid Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 10
- 229920002334 Spandex Polymers 0.000 claims description 7
- 230000006872 improvement Effects 0.000 claims description 7
- 239000004759 spandex Substances 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004513 sizing Methods 0.000 abstract 2
- 238000002203 pretreatment Methods 0.000 abstract 1
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/04—Carriers or supports for textile materials to be treated
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to the technical field of knitted fabrics, in particular to a production process for improving crease of knitted fabrics, which comprises the following steps: a, pretreatment: the cloth feeding speed of open width water washing is 15-30m/min, and the cloth is fed in a loose manner; the refining temperature of the open-width water washing second tank is 100-; then carrying out acid neutralization at the temperature of not less than 40 ℃; finally, washing with water at 20-30 ℃; b, presetting: the temperature is 185-205 ℃, and the presetting time is 20-35S; c, dyeing: the cloth holding capacity of the dye vat is 65-70%; adjusting the pressure of the nozzle, the running speed of the lifting roller and the temperature rising and reducing speed according to the specification of the fabric; d, shaping: the setting time is 20-30S, and the cloth is cooled by a cooling device after being discharged by the setting machine until the cloth falling temperature is not higher than 45 ℃. According to the invention, by controlling the process parameters of the pre-treatment, dyeing and sizing of the knitted fabric and combining a specific sizing cooling scheme, the crease of the knitted fabric is effectively improved, the product qualification rate of a factory is increased, and the production cost of the factory is saved.
Description
Technical Field
The invention relates to the technical field of knitted fabrics, in particular to a production process for improving crease of knitted fabrics.
Background
The reasons for the crease of the knitted fabric are generally as follows: firstly, the texture structure of the knitted fabric is formed by winding loops, and the knitted fabric is subjected to tension in the production process to generate large stretching deformation; secondly, the folding and the extrusion of the fabric in the dye vat lead to the displacement and the deformation of the coil due to the shrinkage difference of the fiber in a short time when the temperature rise and fall are too fast; thirdly, the cloth cover temperature is higher after the finished product is shaped, and the in-vehicle hot pressing deformation is formed due to insufficient cooling.
The knitted fabric is deformed due to the reasons, creases are caused, the appearance of a product is influenced, even the order is scrapped when the knitted fabric is serious, great loss is brought to customers and factories, in order to improve the creases, the conventional mode is to carry out setting and tentering processes on the knitted fabric, then the knitted fabric is preshrinked, although the creases of the knitted fabric are improved to some extent after the repair process is added, the production cost of the factories is increased, and economic loss is brought to the factories.
Disclosure of Invention
In order to solve the technical problems, the invention provides a production process for improving crease of knitted fabric, which comprises the following steps:
a, pretreatment: adopting an open width washing machine for pretreatment, wherein the washing cloth feeding speed is 15-30m/min, and controlling through a speed regulating device of the open width washing machine to ensure that the cloth surface has no tension when feeding cloth; the refining temperature of the open-width water washing second tank is 100-; then carrying out acid neutralization at the temperature of not less than 40 ℃; finally, washing with water at 20-30 ℃;
b, presetting: pre-setting the pre-treated fabric at 185-205 ℃ for 20-35S; controlling the flatness of the cloth surface and the breadth of the pre-shaped fabric and the square gram weight, wherein the breadth of the pre-shaped fabric is 6-8cm wider than the breadth of the finished product, and the square gram weight of the pre-shaped fabric is 5-8g/m2 larger than the square gram weight of the finished product;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, and controlling the cloth holding capacity of the dye vat to be 65-70%; for the fabric with the square gram weight of more than 200g/m2, increasing the pressure of a nozzle and reducing the running speed of a lifting roller; if the square gram weight of the fabric is less than 200g/m2, the pressure of the nozzle is reduced, and the running speed of the lifting roller is increased; in the dyeing process, the dyeing temperature rising speed is not more than 4 ℃/min, and the dyeing temperature reduction speed is not more than 5 ℃/min;
d, shaping: the setting temperature of the dyed fabric is 6-28 ℃ lower than the presetting temperature, the setting time is 20-30S, the cloth outlet of the setting machine is connected with a cloth cover cooling device, the set fabric is cooled by the cooling device and then is subjected to cropping folding, the cooling treatment time of the fabric by the cooling device is 15-25S, and the cropping temperature of the cooled fabric is not higher than 45 ℃.
Further, the knitted fabric is a 30S pure cotton bead ground fabric, and the crease improvement process comprises the following steps:
a, pretreatment: the cloth feeding speed of washing is 20m/min, the refining temperature of the open width washing two tanks is 100 ℃, and washing is carried out at 80 ℃ after refining is finished; the acid neutralization temperature is 40 ℃; finally, washing with water at 25 ℃;
b, presetting: the presetting temperature is 185 ℃, and the presetting time is 20S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 0.9, and the cloth speed is 280 m/min;
d, shaping: the setting temperature is 165 ℃, the setting time is 25S, the cooling treatment time of the fabric by a cooling device is 20S, and the doffing temperature of the cooled fabric is 45 ℃.
Further, the knitted fabric is 30S cotton terry cloth containing 10% of spandex, and the process for improving the crease is as follows:
a, pretreatment: the cloth feeding speed of washing is 20m/min, the refining temperature of the open width washing two tanks is 105 ℃, and washing is carried out at 85 ℃ after refining is finished; the acid neutralization temperature is 45 ℃; finally, washing with water at 30 ℃;
b, presetting: the presetting temperature is 185 ℃, and the presetting time is 30S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 1.0, and the cloth speed is 230 m/min;
d, shaping: the setting temperature is 165 ℃, the setting time is 20 seconds, the cooling treatment time of the fabric by a cooling device is 25 seconds, and the doffing temperature of the cooled fabric is 45 ℃.
Further, the knitted fabric is 40S polyester plain cloth containing 10% of spandex, and the process for improving the crease is as follows:
a, pretreatment: the cloth feeding speed of washing is 25m/min, the refining temperature of the open width washing two tanks is 105 ℃, and washing is carried out at 85 ℃ after refining is finished; the acid neutralization temperature is 45 ℃; finally, washing with water at 25 ℃;
b, presetting: the presetting temperature is 190 ℃, and the presetting time is 20S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 0.9, and the cloth speed is 300 m/min;
d, shaping: the setting temperature is 180 ℃, the setting time is 20S, the cooling treatment time of the fabric by a cooling device is 25S, and the doffing temperature of the cooled fabric is 40 ℃.
And furthermore, in the step D shaping process, the cooling device comprises an air cooler and a cooling roller.
Further, the chill roll is for cup jointing tubular structure, including outer tube, cooling hollow layer and dabber, the outer tube is the copper pipe, the hollow layer is used for the cooling liquid to flow through in the cooling, dabber and outer tube connection for drive the chill roll and rotate.
Furthermore, the cooling rollers comprise at least six groups which are sequentially arranged along the fabric transmission direction, cooling liquid of the cooling rollers is sequentially transmitted between the cooling rollers, and the transmission direction of the cooling rollers is opposite to the fabric transmission direction.
Furthermore, the crease qualification rate of the knitted fabric produced by the production process is not less than 95%.
Further, in the step B pre-setting process, the overfeed rate of the fabric is not lower than 20%.
Further, in the step B presetting process, the presetting vehicle speed is 15-30 m/min.
Compared with the prior art, the invention has the beneficial effects that: by controlling the technological parameters of the pre-processing, dyeing and shaping of the knitted fabric and combining a specific shaping cooling scheme, the crease of the knitted fabric is effectively improved, the crease qualification rate of the fabric is not lower than 95%, the product qualification rate of a factory is increased, the product quality is improved, the improvement process is adopted, extra repair is not needed, and the production cost of the factory is saved.
Drawings
FIG. 1 is a schematic structural view of a chill roll according to an embodiment of the present invention;
fig. 2 is a schematic sectional view of a cooling roller according to an embodiment of the present invention.
The cooling roller 1, the outer sleeve 10, the cooling hollow layer 11 and the mandrel 12.
Detailed Description
The invention will be further explained with reference to the drawings and examples.
The invention provides a production process for improving crease of knitted fabric, which comprises the following steps:
a, pretreatment: adopting an open width washing machine for pretreatment, wherein the washing cloth feeding speed is 15-30m/min, and controlling through a speed regulating device of the open width washing machine to ensure that the cloth surface has no tension when feeding cloth; the refining temperature of the open-width water washing second tank is 100-; then carrying out acid neutralization at the temperature of not less than 40 ℃; finally, washing with water at 20-30 ℃;
b, presetting: pre-setting the pre-treated fabric at 185-205 ℃ for 20-35S; controlling the flatness of the cloth surface and the breadth of the pre-shaped fabric and the square gram weight, wherein the breadth of the pre-shaped fabric is 6-8cm wider than the breadth of the finished product, and the square gram weight of the pre-shaped fabric is 5-8g/m2 larger than the square gram weight of the finished product; the overfeed rate of the general fabric is not lower than 20 percent, and the presetting vehicle speed is 15-30 m/min;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, and controlling the cloth holding capacity of the dye vat to be 65-70%; for the fabric with the square gram weight of more than 200g/m2, increasing the pressure of a nozzle and reducing the running speed of a lifting roller; if the square gram weight of the fabric is less than 200g/m2, the pressure of the nozzle is reduced, and the running speed of the lifting roller is increased; in the dyeing process, the dyeing temperature rising speed is not more than 4 ℃/min, and the dyeing temperature reduction speed is not more than 5 ℃/min;
d, shaping: the setting temperature of the dyed fabric is 6-28 ℃ lower than the presetting temperature, the setting time is 20-30S, the cloth outlet of the setting machine is connected with a cloth cover cooling device, the set fabric is cooled by the cooling device and then is subjected to cropping folding, the cooling treatment time of the fabric by the cooling device is 15-25S, and the cropping temperature of the cooled fabric is not higher than 45 ℃.
The crease improvement production process for several specific sizes of fabrics will be given below:
example 1
This example provides a crease improvement process of 30S pure cotton bead ground fabric, including the following steps:
a, pretreatment: the cloth feeding speed of washing is 20m/min, the refining temperature of the open width washing two tanks is 100 ℃, and washing is carried out at 80 ℃ after refining is finished; the acid neutralization temperature is 40 ℃; finally, washing with water at 25 ℃;
b, presetting: the presetting temperature is 185 ℃, and the presetting time is 20S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 0.9, and the cloth speed is 280 m/min;
d, shaping: the setting temperature is 165 ℃, the setting time is 25S, the cooling treatment time of the fabric by a cooling device is 20S, and the doffing temperature of the cooled fabric is 45 ℃.
Example 2
This example presents a crease improvement process for a 30S cotton terry knit fabric containing 10% spandex, comprising:
a, pretreatment: the cloth feeding speed of washing is 20m/min, the refining temperature of the open width washing two tanks is 105 ℃, and washing is carried out at 85 ℃ after refining is finished; the acid neutralization temperature is 45 ℃; finally, washing with water at 30 ℃;
b, presetting: the presetting temperature is 185 ℃, and the presetting time is 30S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 1.0, and the cloth speed is 230 m/min;
d, shaping: the setting temperature is 165 ℃, the setting time is 20 seconds, the cooling treatment time of the fabric by a cooling device is 25 seconds, and the doffing temperature of the cooled fabric is 45 ℃.
The thickness and the gram weight of the material of the terry cloth with the same yarn count are larger than those of the bead structure, so that the nozzle pressure in dyeing is correspondingly increased, and the cloth speed is reduced, so that the crease of the fabric is improved.
Example 3
This example shows a 40S polyester flat fabric containing 10% spandex, and the process for improving the crease comprises:
a, pretreatment: the cloth feeding speed of washing is 25m/min, the refining temperature of the open width washing two tanks is 105 ℃, and washing is carried out at 85 ℃ after refining is finished; the acid neutralization temperature is 45 ℃; finally, washing with water at 25 ℃;
b, presetting: the presetting temperature is 190 ℃, and the presetting time is 20S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 0.9, and the cloth speed is 300 m/min;
d, shaping: the setting temperature is 180 ℃, the setting time is 20S, the cooling treatment time of the fabric by a cooling device is 25S, and the doffing temperature of the cooled fabric is 40 ℃.
In the embodiment, the crease yield is not lower than 95%, so that the quality of the fabric is obviously improved.
In the above embodiment, in the step D shaping process, the cooling device includes an air cooler and a cooling roller 1, wherein the structural schematic diagram and the sectional view of the cooling roller 1 are as shown in fig. 1 and fig. 2, the cooling roller 1 is a sleeve-type structure, and includes an outer sleeve 10, a cooling hollow layer 11 and a mandrel 12, the outer sleeve 10 is a copper pipe, the copper pipe has high heat conduction efficiency, and can take away heat from the surface of the fabric at a relatively high speed, so as to accelerate cooling of the fabric surface, the cooling hollow layer is used for flowing cooling liquid, the cooling liquid includes, but is not limited to, cooling water, and the mandrel 12 is connected to the outer sleeve 10 and is used for driving the cooling roller to rotate.
In order to realize the hierarchical cooling and save the cooling liquid, the cooling rollers 1 comprise at least six groups which are sequentially arranged along the fabric transmission direction, the cooling liquid is sequentially transmitted between the cooling rollers 1 through a liquid pipeline (not shown in the figure), and the transmission direction of the cooling liquid is opposite to the fabric transmission direction, so that the temperature of the fabric surface of the fabric is reduced along with the fabric transmission direction, the temperature of the cooling liquid is also reduced, and the effects of saving the cooling liquid and cooling the fabric hierarchically can be realized.
In the fabric improvement process, in addition to the process parameters, the states of the fabric in all links are observed at any time, for example, when the fabric is woven into a roll, the fabric is prevented from being extruded by a cloth roller to form a crimping line crease; for the knitted fabrics with higher spandex content, the parking time of loosening the gray fabric in a fabric vehicle is reduced, and the crease caused by overlong hemming and stacking time of the gray fabric is prevented; in the pretreatment process, the fabric states of cloth feeding and cropping are noticed at any time, and once the cropping crease appears, the fabric should be treated in time, and the like.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A production process for improving crease of knitted fabric is characterized in that: the method comprises the following steps:
a, pretreatment: adopting an open width washing machine for pretreatment, wherein the washing cloth feeding speed is 15-30m/min, and controlling through a speed regulating device of the open width washing machine to ensure that the cloth surface has no tension when feeding cloth; the refining temperature of the open-width water washing second tank is 100-; then carrying out acid neutralization at the temperature of not less than 40 ℃; finally, washing with water at 20-30 ℃;
b, presetting: pre-setting the pre-treated fabric at 185-205 ℃ for 20-35S; controlling the flatness of the cloth surface and the breadth of the pre-shaped fabric and the square gram weight, wherein the breadth of the pre-shaped fabric is 6-8cm wider than the breadth of the finished product, and the square gram weight of the pre-shaped fabric is 5-8g/m heavier than the large square gram weight of the finished product2；
C, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, and controlling the cloth holding capacity of the dye vat to be 65-70%; greater than 200g/m for square gram weight2The pressure of the nozzle is increased, and the running speed of the lifting roller is reduced; the square gram weight is less than 200g/m2The pressure of the nozzle is reduced, and the running speed of the lifting roller is increased; in the dyeing process, the dyeing temperature rising speed is not more than 4 ℃/min, and the dyeing temperature reduction speed is not more than 5 ℃/min;
d, shaping: the setting temperature of the dyed fabric is 6-28 ℃ lower than the presetting temperature, the setting time is 20-30S, the cloth outlet of the setting machine is connected with a cloth cover cooling device, the set fabric is cooled by the cooling device and then is subjected to cropping folding, the cooling treatment time of the fabric by the cooling device is 15-25S, and the cropping temperature of the cooled fabric is not higher than 45 ℃.
2. The production process for improving crease of knitted fabric according to claim 1, characterized in that: the knitted fabric is a 30S pure cotton bead ground fabric, and the crease improvement process comprises the following steps:
a, pretreatment: the cloth feeding speed of washing is 20m/min, the refining temperature of the open width washing two tanks is 100 ℃, and washing is carried out at 80 ℃ after refining is finished; the acid neutralization temperature is 40 ℃; finally, washing with water at 25 ℃;
b, presetting: the presetting temperature is 185 ℃, and the presetting time is 20S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 0.9, and the cloth speed is 280 m/min;
d, shaping: the setting temperature is 165 ℃, the setting time is 25S, the cooling treatment time of the fabric by a cooling device is 20S, and the doffing temperature of the cooled fabric is 45 ℃.
3. The production process for improving crease of knitted fabric according to claim 1, characterized in that: the knitted fabric is 30S cotton terry cloth containing 10% of spandex, and the process for improving the crease comprises the following steps:
a, pretreatment: the cloth feeding speed of washing is 20m/min, the refining temperature of the open width washing two tanks is 105 ℃, and washing is carried out at 85 ℃ after refining is finished; the acid neutralization temperature is 45 ℃; finally, washing with water at 30 ℃;
b, presetting: the presetting temperature is 185 ℃, and the presetting time is 30S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 1.0, and the cloth speed is 230 m/min;
d, shaping: the setting temperature is 165 ℃, the setting time is 20 seconds, the cooling treatment time of the fabric by a cooling device is 25 seconds, and the doffing temperature of the cooled fabric is 45 ℃.
4. The production process for improving crease of knitted fabric according to claim 1, characterized in that: the knitted fabric is 40S polyester plain cloth containing 10% of spandex, and the process for improving the crease comprises the following steps:
a, pretreatment: the cloth feeding speed of washing is 25m/min, the refining temperature of the open width washing two tanks is 105 ℃, and washing is carried out at 85 ℃ after refining is finished; the acid neutralization temperature is 45 ℃; finally, washing with water at 25 ℃;
b, presetting: the presetting temperature is 190 ℃, and the presetting time is 20S;
c, dyeing: dyeing the fabric by adopting an O-shaped airflow cylinder, wherein the cloth holding capacity of the dye cylinder is 65-70%; the pressure of the nozzle is 0.9, and the cloth speed is 300 m/min;
d, shaping: the setting temperature is 180 ℃, the setting time is 20S, the cooling treatment time of the fabric by a cooling device is 25S, and the doffing temperature of the cooled fabric is 40 ℃.
5. The production process for improving crease of knitted fabric according to claim 1, characterized in that: and D, in the shaping process, the cooling device comprises an air cooler and a cooling roller (1).
6. The production process for improving crease of knitted fabric according to claim 5, characterized in that: the cooling roller (1) is a sleeved tubular structure and comprises an outer sleeve (10), a cooling hollow layer (11) and a mandrel (12), the outer sleeve (10) is a copper pipe, the cooling hollow layer (11) is used for cooling liquid to flow through, and the mandrel (12) is connected with the outer sleeve (10) and used for driving the cooling roller (1) to rotate.
7. The production process for improving crease of knitted fabric according to claim 6, characterized in that: the cooling rollers comprise at least six groups which are sequentially arranged along the fabric transmission direction, cooling liquid of the cooling rollers is sequentially transmitted between the cooling rollers, and the transmission direction of the cooling rollers is opposite to the fabric transmission direction.
8. The production process for improving crease of knitted fabric according to claim 1 or 5, characterized in that: the crease qualification rate of the knitted fabric produced by the production process is not lower than 95%.
9. The production process for improving crease of knitted fabric according to claim 8, characterized in that: in the step B pre-setting process, the overfeed rate of the fabric is not lower than 20%.
10. The production process for improving crease of knitted fabric according to claim 9, characterized in that: in the step B, the presetting vehicle speed is 15-30 m/min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059215A (en) * | 2021-12-01 | 2022-02-18 | 鲁泰纺织股份有限公司 | Preparation method of nylon fabric |
| CN114134667A (en) * | 2021-11-29 | 2022-03-04 | 上海嘉麟杰纺织科技有限公司 | Processing method of short-process polyester spandex and tencel knitted color stripe fabric |
| CN115161929A (en) * | 2022-07-14 | 2022-10-11 | 浙江弘达环保科技有限公司 | Fabric scouring, bleaching and washing assembly line and processing technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114134667A (en) * | 2021-11-29 | 2022-03-04 | 上海嘉麟杰纺织科技有限公司 | Processing method of short-process polyester spandex and tencel knitted color stripe fabric |
| CN114059215A (en) * | 2021-12-01 | 2022-02-18 | 鲁泰纺织股份有限公司 | Preparation method of nylon fabric |
| CN115161929A (en) * | 2022-07-14 | 2022-10-11 | 浙江弘达环保科技有限公司 | Fabric scouring, bleaching and washing assembly line and processing technology |
| CN115161929B (en) * | 2022-07-14 | 2023-08-29 | 浙江弘达环保科技有限公司 | Fabric scouring and bleaching water washing assembly line and processing technology |
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