Method for improving arch shape of cloth lines of cloth between rows

By first drying the cloth with water at low temperature and then fixing the cloth at high temperature, the bow problem of the inter-row cloth is solved, the stability of the cloth pattern and high-quality production are achieved, and the defective rate is reduced.

CN120683672APending Publication Date: 2025-09-23PACIFIC (PANYU) TEXTILES LTD
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Patent Information

Application Number
CN202510957621.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-11
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

The existing technology is difficult to effectively improve the bow problem of the weft yarn grain of the inter-row cloth, which causes the weft yarn to be unevenly stressed during the weaving process, forming a bow shape, affecting product quality.

Method used

The process of first drying the cloth with low-temperature water and then setting it at high temperature is adopted. The low-temperature water treatment allows the inter-row cloth to fully swell and release internal stress. Combined with high-temperature setting, the stability of the cloth grain is ensured, avoiding stretching or shrinkage, and the parameters of the setting machine are optimized to improve the bow shape of the cloth grain.

Benefits of technology

The bow shape of the inter-row cloth was significantly improved, the production qualification rate was increased, and the rejection rate was reduced to below 2.5%, meeting the market's high-quality requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a method for improving the cloth grain arch shape of inter-row cloth, and the method comprises the following steps: sequentially carrying out low-temperature rinsing and drying, high-temperature blank fixing, dye vat water washing, dehydration and cloth loosening, cloth drying by a setting machine and finished product setting on the gray cloth of the inter-row cloth to obtain the finished inter-row cloth, and the method comprises the following steps: firstly carrying out low-temperature rinsing and drying on the cloth and then carrying out high-temperature blank fixing; the arch-shaped problem of the inter-row cloth lines is obviously improved, so that the batch number proportion of the arch-shaped inter-row cloth lines of the produced finished product is greatly reduced, and the production qualification rate of the fabric is obviously improved.
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Description

Technical Field

[0001] The invention relates to the technical field of fabric processing, in particular to a method for improving the bow shape of a pattern of an inter-row fabric. Background Art

[0002] Interlaced fabric generally refers to a fabric made from multiple strands of cotton or synthetic fibers woven through a special process. Its fabric structure and appearance presents an interlaced effect formed by a cyclic distribution of at least two colors. The interlacing of the warp and weft yarns in interlaced fabric can easily lead to uneven stress on the weft yarn during the weaving process. For example, the twill weave structure makes the weft yarn prone to uneven internal stress distribution during weaving, causing the weft grain to bend and form a bow. In addition, if the weft tension is not properly controlled during the weaving process, it will also cause the weft yarn to be unevenly stressed during weaving, resulting in a bow shape. To address the bowing phenomenon, the textile industry generally tries to minimize the tension of the cloth support and the tension of the cloth drop during weaving, and then improve it in the subsequent dyeing and finishing processes. For example, direct high-temperature setting of the embryo and straightening the weft on the head of the setting machine to create a straight cloth grain. However, this method does not significantly improve the bowing effect. The output quality of the cloth is low, and the cloth grain is still skewed. Or, if the process conditions are inappropriate during high-temperature setting, the cloth grain rebounds in the finished product process.

[0003] CN115012153A discloses a process for processing polyester-cotton satin strip products, including the steps of turning over the cloth, pre-setting, singeing, desizing and bleaching, mercerizing, dyeing, post-setting and packaging. The pre-setting process is performed by setting the setting machine temperature at 210°C, and the post-setting process is performed by setting the setting machine temperature at 170-200°C. Both the pre-setting and post-setting processes are high-temperature heat setting processes. The process only mentions whether the product has wrinkles, without more accurately measuring its bow ratio, thereby failing to further improve product quality.

[0004] CN106381626A discloses a production process for a circulating colored striped water-shedding cloth, comprising the following steps: a cloth preparation group flattens and loosens the cloth, five-thread flat sewing is performed on the cloth ends, the cloth is shaped in a 98°C × 20-day steam shrinking machine, dry-shaped at 200°C × 32-day, and hot-water-shaped at 160°C × 26-day. The process still uses the traditional high-temperature shaping process, which has little effect on improving the bow shape of the cloth grain, and there is still much room for improvement.

[0005] Therefore, how to develop a method for improving the bow shape of the inter-row cloth and prepare high-quality inter-row cloth products to meet market demand is an urgent problem to be solved in this field. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a method for improving the bow shape of the inter-row cloth. The method first driers the cloth in water at low temperature and then fixes the cloth at high temperature, so that the inter-row cloth is fully swollen in advance to release internal stress. The synergistic effect of each process significantly improves the bow shape of the inter-row cloth, thereby improving the production qualification rate of such fabrics.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The present invention provides a method for improving the bow shape of inter-row cloth, the method comprising the following steps:

[0009] The inter-row cloth embryonic cloth goes through the processes of low-temperature water drying, high-temperature embryo setting, dye vat washing, dehydration loosening, setting machine drying and finished product setting in sequence to obtain the finished inter-row cloth.

[0010] The method of the present invention first performs low-temperature water treatment on the inter-row cloth embryo cloth to fully swell the inter-row cloth embryo cloth in advance to fully release the internal stress, and then combines it with high-temperature embryo setting. The various processes work synergistically to avoid stretching or shrinking of the inter-row cloth when it is discharged, ensure the stability of the cloth sealing, and significantly improve the bow shape of the cloth grain of the inter-row cloth.

[0011] Preferably, based on the mass percentage of the inter-row cloth grey cloth being 100wt%, the inter-row cloth grey cloth includes 35wt% to 45wt% CD POLY, 25wt% to 35wt% acrylic fiber, 15wt% to 25wt% viscose fiber and 5wt% to 10wt% spandex.

[0012] Among them, 35wt% to 45wt% CD POLY can be, for example, 35wt%, 38wt%, 40wt%, 42wt% or 45wt%; 25wt% to 35wt% acrylic fiber can be, for example, 25wt%, 28wt%, 30wt%, 32wt% or 35wt%; 15wt% to 25wt% viscose fiber can be, for example, 15wt%, 17wt%, 20wt%, 22wt% or 25wt%; 5wt% to 10wt% spandex can be, for example, 5wt%, 6wt%, 7wt%, 8wt%, 9wt% or 10wt%;

[0013] Preferably, the warp density CPI of the inter-row cloth grey fabric is 45-55, for example, it can be 45, 48, 50, 52 or 55.

[0014] Preferably, the transverse density WPI of the inter-row cloth grey fabric is 35-43, for example, 35, 38, 40, 42 or 43.

[0015] Preferably, the sealing depth of the inter-row cloth grey cloth is 167-205 cm, for example, it can be 167 cm, 170 cm, 175 cm, 180 cm, 185 cm, 190 cm, 195 cm, 200 cm or 205 cm.

[0016] Preferably, the low-temperature water-passing and drying process includes the inter-row cloth grey cloth being sequentially passed through a slurry tank, pressed, overfed and low-temperature dried in a setting machine before exiting the machine.

[0017] Preferably, the water temperature of the slurry tank is 20-30°C, for example, 20°C, 22°C, 24°C, 26°C, 28°C or 30°C.

[0018] It is worth noting that if the inter-row cloth grey cloth has serious bow shape (such as bow ratio > 4%), the water temperature of the slurry tank can be appropriately increased to 50-70℃, for example, it can be 50℃, 55℃, 60℃, 65℃ or 70℃; or it can be directly passed through an ultrasonic deoiler (with hot water at 50-70℃ in the tank) and then dried in a setting machine.

[0019] In the present invention, the yarns of the inter-row grey cloth are first passed through the sizing tank for water before the low-temperature drying, which is beneficial for the yarns of the inter-row grey cloth to absorb water and produce a certain swelling, thereby releasing the internal stress and improving the stability of the cloth sealing in the subsequent process.

[0020] The amount of water flowing through the slurry tank in the present invention is not limited as long as it ensures that the inter-row grey cloth can be fully immersed.

[0021] Preferably, the rolling pressure is 4 to 6 bar, for example, 4 bar, 4.2 bar, 4.5 bar, 4.8 bar, 5 bar, 5.2 bar, 5.5 bar, 5.8 bar or 6 bar.

[0022] The purpose of the pressing method described in the present invention is to dry the inter-row fabric after it has been watered in the sizing tank, thereby reducing the burden on the subsequent drying of the fabric and reducing energy consumption. If the inter-row fabric is thick, the pressing pressure can be appropriately increased, but it is still necessary to avoid excessive pressure, which can cause serious problems such as holes in the inter-row fabric and yarn damage. If the inter-row fabric is thin, the pressing pressure can be appropriately reduced.

[0023] Preferably, the low-temperature water drying process is also performed with an automatic weft straightening process before the overfeeding.

[0024] It is worth noting that, when the low-temperature water drying cloth is carried out in the present invention, automatic weft straightening treatment is performed before the overfeeding, and the bending roller and the straight roller need to be adjusted to ensure that the fabric grain of the inter-row cloth is as straight as possible before the positive overfeeding.

[0025] The overfeeding performed during the low-temperature water drying process of the present invention is positive overfeeding, that is, feeding as much as possible and bringing waves into the machine.

[0026] Preferably, the oven temperature of the setting machine during the low-temperature drying is 100-140°C, for example, 100°C, 110°C, 120°C, 130°C or 140°C.

[0027] Preferably, when drying the cloth at low temperature, the wind speed of the setting machine is 40% to 100%, for example, 40%, 50%, 60%, 70%, 80%, 90% or 100%.

[0028] Preferably, the temperature of the grey cloth after low-temperature drying is 100-140°C, for example, it can be 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C or 140°C.

[0029] The setting machine used for low-temperature and high-temperature drying of cloth in the present invention has 8 ovens. When drying the cloth at low temperature, the machine parameters are set according to the thickness, composition and yarn type of the inter-row cloth. For example, the following machine parameters can be set: needle rack 170cm×7 (8-section oven, 7-section needle rack); set temperature: 150℃×6+140℃×2 (that is, the temperature of the first 6 ovens is set to 150℃, and the temperature of the last 2 ovens is set to 140℃) or 140℃×8 (that is, the temperature of all 8 ovens is set to 140℃); set wind power: 60% / 65%×4 (that is, the wind power of each two ovens is set synchronously, 60% is the upwind wind power, and 65% is the downwind wind power); set automatic temperature control: OMT is set to 140℃.

[0030] Among them, 150℃×6+140℃×2 (i.e. the temperature of the first 6 ovens is set to 150℃, and the temperature of the last 2 ovens is set to 140℃) is mostly used for high-temperature pulling racks; 140℃×8 (i.e. the temperature of all 8 ovens is set to 140℃) is mostly used for low-temperature pulling racks, that is, to ensure that the cloth is completely dry.

[0031] Preferably, the high-temperature setting embryo includes the inter-row embryo cloth after the low-temperature water drying treatment, which is sequentially passed through the overfeed part of the setting machine and the high-temperature drying part before exiting the machine.

[0032] The degree of overfeeding during high-temperature embryo setting in the present invention is adaptively adjusted according to the surface conditions of the inter-row cloth at that time.

[0033] The overfeeding performed in the high-temperature embryo setting process in the method of the present invention is a stretching state.

[0034] Preferably, the oven temperature of the shaping machine during high-temperature shaping is 190-205°C, for example, 190°C, 192°C, 195°C, 197°C, 200°C, 202°C or 205°C.

[0035] Preferably, the wind force of the setting machine during high-temperature embryo setting is 50% to 100%, for example, it can be 50%, 60%, 70%, 80%, 90% or 100%.

[0036] Preferably, during the high-temperature setting, the time for the inter-row cloth to pass through the oven area with a temperature of 190-205° C. is maintained for 15-25 seconds, for example, 15 seconds, 18 seconds, 20 seconds, 22 seconds or 25 seconds.

[0037] The setting machine used for the low-temperature drying and high-temperature drying cloths in the present invention has 8 sections of ovens. During the high-temperature setting, the machine parameters are set according to the thickness, composition, yarn type of the inter-row cloth and the state of the cloth after the low-temperature drying. For example, the following machine parameters can be set: needle rack 165cm+175cm×6 (8 sections of ovens, 7 sections of needle racks); set temperature: 170℃+197℃×7 (that is, the temperature of the first section of the oven is set to 170℃, and the temperature of the last 7 sections is set to 170℃). The oven temperature is set to 197°C); the wind speed is set to 60% / 65%+95% / 100%×2+90% / 95% (i.e., the wind speed of the ovens in sections 1 to 2 is set to 60% for upwind and 65% for downwind; the wind speed of the ovens in sections 3 to 6 is set to 95% for upwind and 100% for downwind; the wind speed of the ovens in sections 7 to 8 is set to 90% for upwind and 95% for downwind); and the automatic temperature control is set: VMT is set to 195°C×20s.

[0038] As a further preferred technical solution of the present invention, the method comprises the following steps:

[0039] First, the inter-row cloth is dried by low-temperature water. The low-temperature water drying includes the inter-row cloth passing through a sizing machine, passing through a sizing tank with water temperature of 20-30°C, and then pressing with a pressure of 4-6 bar, and then overfeeding. The cloth is then dried at low temperature in an oven at a temperature of 100-140°C and a wind speed of 40%-100% before leaving the machine. The temperature of the cloth leaving the machine is 100-140°C. The inter-row cloth after low-temperature water drying is then subjected to high-temperature setting. The high-temperature setting includes the following steps: the inter-row cloth after the low-temperature water drying is first passed through the overfeeding part of the setting machine, and then passed through the high-temperature drying part before exiting the machine. The temperature of the high-temperature drying part is 190-205°C, the wind speed is 50%-100%, and the time for the inter-row cloth to pass through the drying area with a temperature of 190-205°C during the high-temperature setting is 15-25 seconds. After that, the inter-row cloth is sequentially subjected to the dye vat washing, dehydration loosening, setting machine drying and finished product setting processes to obtain the finished inter-row cloth;

[0040] According to the mass percentage of the inter-row cloth grey cloth being 100wt%, the inter-row cloth grey cloth includes 35wt% to 45wt% CD POLY, 25wt% to 35wt% acrylic fiber, 15wt% to 25wt% viscose fiber and 5wt% to 10wt% spandex, and the warp density CPI of the inter-row cloth grey cloth is 45 to 55, the transverse density WPI is 35 to 43, and the sealing degree is 167 to 205cm.

[0041] Optionally, the method further includes a shearing process before the finished product shaping process.

[0042] It is worth noting that the method of the present invention must ensure balanced and stable tension throughout the entire dyeing and finishing process (except for the automatic weft straightening process of the low-temperature water-dried cloth, which requires correction of the bow-shaped fabric grain), otherwise it will not be conducive to improving the bow shape of the fabric grain.

[0043] Compared with the prior art, the present invention has at least the following beneficial effects:

[0044] The method for improving the bow shape of the texture of the inter-row cloth provided by the present invention significantly improves the bow shape problem of the texture of the inter-row cloth through the process of first drying the cloth with water at low temperature and then setting the blank at high temperature. The low-temperature drying of the cloth allows it to fully swell to fully release internal stress, which can improve the stability of the texture and cloth seal in subsequent processing. Combined with the high-temperature setting, the flatness of the entire inter-row cloth is improved, and the number of batches of finished inter-row cloth with bow shapes in the texture is greatly reduced. By further optimizing the processes such as overfeeding and automatic weft straightening, as well as the optimization of the machine parameters such as the oven temperature, wind power, and automatic temperature control of the setting machine, the unqualified bow ratio rate (the proportion of unqualified bow pieces) is reduced to below 2.5%, which significantly improves the production qualification rate of such fabrics and meets the high quality requirements of the current market. DETAILED DESCRIPTION

[0045] For the convenience of understanding the present invention, the present invention is given below with examples. It should be understood by those skilled in the art that the examples are only for the purpose of helping to understand the present invention and should not be regarded as specific limitations of the present invention.

[0046] The setting machine used in the following examples or comparative examples (German MONFONGS company, model 328Twin-Air8F) has 8 oven sections; the automatic weft straightening device used is the RFMC94H photoelectric weft straightener, produced by German MAHLO company.

[0047] The following embodiments or comparative examples take inter-row grey cloth with a bow ratio of ≤4% as an example.

[0048] 1. Implementation

[0049] Example 1

[0050] This embodiment provides a method for improving the bow shape of inter-row fabric, the method comprising the following steps:

[0051] First, the inter-row cloth grey fabric is subjected to low-temperature water drying. The low-temperature water drying includes that the inter-row cloth grey fabric is first passed through a slurry tank with water temperature of 25°C in a setting machine, and then pressed with a pressure of 5 bar, and then automatically straightened and overfed (overfed 140%) in sequence. After low-temperature drying, the cloth is discharged from the machine. The specific machine parameters are: needle rack 170cm×7 (7-section needle rack), set temperature: 140°C×8 (that is, the temperature of the 8-section oven is set to 140°C), set wind speed: 60% / 65%×4 (that is, the wind speed of each two ovens is set synchronously, 60% is the upwind wind speed, and 65% is the downwind wind speed), set automatic temperature control: OMT is set to 140°C; then the inter-row cloth grey fabric after low-temperature water drying is subjected to high-temperature setting, and the high-temperature setting includes: the inter-row cloth grey fabric after low-temperature water drying is passed through a setting machine again, and advanced to the overfeeding section. The cloth is then overfed by -10% at a time and then put into the drying oven. The machine parameters are: needle rack 165cm+175cm×6 (7-section needle rack); temperature setting: 170°C+197°C×7 (i.e., the temperature of the first section of the drying oven is set to 170°C, and the temperature of the next 7 sections of the drying oven is set to 197°C); wind speed setting: 60% / 65%+95% / 100%×2+90% / 95% (i.e., the wind speed of the 1st and 2nd sections of the drying oven is set to 60% for upwind and 65% for downwind, the wind speed of the 3rd and 4th sections and the 5th and 6th sections of the drying oven is set to 95% for upwind and 100% for downwind, and the wind speed of the 7th and 8th sections of the drying oven is set to 90% for upwind and 95% for downwind); automatic temperature control: VMT is set to 195°C×20s, and then the dye vat washing, dehydration loosening, setting machine drying and finished product setting processes are carried out in sequence to obtain the finished inter-row cloth.

[0052] In this embodiment, the inter-row cloth grey fabric comprises 40 wt% CD POLY, 32wt% acrylic, 21wt% viscose and 7wt% spandex, the warp density CPI of the inter-row cloth grey cloth is 50, the transverse density WPI is 39, and the sealing is 186cm; the inter-row cloth grey cloth, CPI is 58, and the sealing is 175cm; when the inter-row cloth grey cloth is dried at low temperature and exits the setting machine, the target CPI at the tail of the machine is 73, WPI is 45, the sealing is 163cm, and the target spacing: vertical 10R=4.2cm; when the inter-row cloth grey cloth is exited the setting machine after high-temperature setting, the target CPI at the tail of the machine is 55, WPI is 43, the sealing is 171cm, and the target spacing: vertical 10R=5.5cm; when the inter-row cloth grey cloth exits the machine after the finished product setting process, the target CPI at the tail of the machine is 61.5, WPI is 44, the sealing is 165cm, and the target weight is 142g / m 2 : Vertical 10R=4.8cm.

[0053] Example 2

[0054] This embodiment provides a method for improving the bow shape of inter-row cloth. Except that the high-temperature embryo setting process is overfed by -30%, the oven temperature is set to 180°C + 202°C × 7 (that is, the temperature of the first section oven is set to 180°C, and the temperature of the next 7 sections oven is set to 202°C), and the automatic temperature control: VMT is set to 200°C × 18s, the rest is the same as Example 1.

[0055] Since the overfeed is -30% during high-temperature setting in this embodiment, the fabric surface is stretched more severely, so that the target CPI cannot be achieved when the fabric is discharged from the tail of the machine after setting. In addition, when the setting temperature is increased, the feel of the fabric becomes somewhat rough.

[0056] Example 3

[0057] This embodiment provides a method for improving the bow shape of inter-row cloth. The method is the same as that of embodiment 1 except that the water temperature is 50°.

[0058] The effect of the method described in this embodiment on improving the bow shape of the finished inter-row cloth is equivalent to that in Example 1, which shows that the swelling effect of water at room temperature is sufficient for grey cloth of conventional thickness. Thick cloth or cloth with dense structure can be soaked in superheated water to promote swelling to obtain better improvement effect, but it will increase energy consumption.

[0059] Example 4

[0060] This embodiment provides a method for improving the bow shape of inter-row cloth. The method is the same as that of embodiment 1 except that the overfeeding of 140% during the low-temperature water drying process is adjusted to no overfeeding.

[0061] The method described in this embodiment does not perform overfeeding during the low-temperature water drying process and does not achieve small wave passing through the machine, resulting in difficulty in achieving the target density in one go during the high-temperature embryo setting process.

[0062] Example 5

[0063] This embodiment provides a method for improving the bow shape of the inter-row cloth. Except that the oven temperature in the high-temperature embryo setting process is set to 170℃+192℃×7 (that is, the temperature of the first section oven is set to 170℃, and the temperature of the next 7 sections oven is set to 192℃), and the VMT is set to 190℃×28s, the rest is the same as Example 1.

[0064] In the method described in this embodiment, the inter-row cloth stays in the high temperature area for too long, and the hand feeling will be rough, and there will be a slight breakage phenomenon.

[0065] 2. Comparative Example

[0066] Comparative Example 1

[0067] This comparative example provides a method for improving the bow shape of the inter-row cloth. The method is the same as Example 1 except that the cloth is directly fixed at high temperature instead of being dried by water at low temperature.

[0068] 3. Test and its results

[0069] The method for improving the bow shape of the inter-row cloth provided in the above embodiment and comparative example is used to determine whether the specifications after high-temperature setting of the blank are qualified (if either the cloth seal or the gram weight does not meet the standard, it will be judged as unqualified, wherein the cloth seal standard is 171±2.5cm, and the gram weight range is 125±3.5g / m 2 ), the bow height and cloth seal width of the finished inter-row cloth were measured to determine whether the cloth met the acceptance standard (an average bow ratio of ≤1.5% was considered acceptable, where the bow ratio is the bow height divided by the cloth seal); to verify the stability of the method, 50 pieces of inter-row cloth with similar bowing (bow ratio of approximately 4%) were subjected to the above treatment, and the unqualified rate, i.e., the number of pieces with unqualified bowing among the 50 pieces, was calculated. The results are shown in Table 1;

[0070] Table 1

[0071]

[0072] From the data in Table 1 we can see that:

[0073] (1) It can be seen from Examples 1 and 2 that the method for improving the bow shape of the inter-row cloth provided by the present invention effectively solves the bow shape problem of the inter-row cloth by first subjecting the inter-row cloth to low-temperature water drying and then high-temperature setting, so that the bow ratio is reduced to below 1.5% and the unqualified rate is reduced to below 2.5%.

[0074] (2) Combining Example 1 and Example 3, it can be seen that the increase in water temperature described in Example 3 does not significantly improve the bow phenomenon, but increases energy consumption. This shows that the present invention further prefers that the water temperature of the slurry tank be 20-30°C, and further increases the water temperature of the low-temperature water drying cloth. Although it can theoretically increase the swelling degree of the yarn in water and the release of internal stress, generally speaking, it has no significant improvement on further reducing the bow of the cloth, because the 140°C*8 temperature setting in the chassis and the temperature control OMT setting of 140°C can basically balance the positive effects brought about by the increase in water temperature.

[0075] (3) Combining Examples 1 and 4, it can be seen that even with a high-temperature embryo setting process, the target CPI at the end of the machine cannot be achieved when the water is passed through the machine at low temperature without 140% overfeeding or a small wave process. Furthermore, the bow shape of the fabric at the end of the final product cannot be improved. This is because, during the low-temperature water pass, positive overfeeding and small wave process are not actively performed. The overfeeding process during high-temperature embryo setting alone cannot correct the end-of-machine density at the end of embryo setting and the bow shape of the fabric at the end of the final product in a timely manner.

[0076] (4) From the combination of Example 1 and Example 5, it can be seen that in the high-temperature embryo setting stage, the temperature setting in the oven is appropriately lowered, and the fabric is kept in the designated temperature zone in the machine box for a longer time. Although the target specifications can be achieved, the inter-row fabric stays in the high-temperature zone for too long, and the hand feeling will be jerky, and there will be slight breakage and tensioning. In addition, there is not much improvement in improving the bow shape of the fabric grain, but it reduces the machine speed, which is not conducive to improving production efficiency.

[0077] (5) From the perspective of Example 1 and Comparative Example 1, it can be seen that: since the comparative example 1 does not perform low-temperature water drying but directly sets the blank at high temperature, the internal stress of the inter-row cloth grain cannot be released in advance, resulting in the failure to meet the target specifications at the end of setting the blank. At the end of the finished product process, the bow ratio increases to 3.4%, and the unqualified rate increases to 3.7%. This shows that the method of the present invention can significantly improve the bow problem of the inter-row cloth grain by first performing low-temperature water drying and then setting the blank at high temperature, thereby improving the production qualification rate of such fabrics.

[0078] The applicant declares that the above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A method for improving the bow shape of inter-row cloth, characterized in that: The method comprises the following steps: The inter-row cloth embryonic cloth goes through the processes of low-temperature water drying, high-temperature embryo setting, dye vat washing, dehydration loosening, setting machine drying and finished product setting in sequence to obtain the finished inter-row cloth.

2. The method according to claim 1, characterized in that Based on the mass percentage of the inter-row cloth grey cloth being 100wt%, the inter-row cloth grey cloth includes 35wt%-45wt% CD POLY, 25wt%-35wt% acrylic fiber, 15wt%-25wt% viscose fiber and 5wt%-10wt% spandex.

3. The method according to claim 1 or 2, characterized in that The warp density CPI of the inter-row cloth is 45 to 55; Preferably, the transverse density WPI of the inter-row cloth is 35-43; Preferably, the sealing depth of the inter-row cloth grey cloth is 167-205 cm.

4. The method according to any one of claims 1 to 3, characterized in that The low-temperature water-passing and drying process includes the inter-row cloth grey cloth being sequentially passed through a slurry tank, pressed, overfed and low-temperature dried in a setting machine before exiting the machine.

5. The method according to claim 4, characterized in that The water temperature of the slurry tank is 20-30°C; Preferably, the rolling pressure is 4 to 6 bar.

6. The method according to claim 4 or 5, characterized in that When the low-temperature drying is carried out, the oven temperature of the setting machine is 100-140°C; Preferably, the wind speed of the setting machine during low-temperature drying is 40% to 100%; Preferably, the temperature of the grey cloth leaving the machine after low-temperature drying is 100-140°C.

7. The method according to any one of claims 1 to 6, characterized in that The high-temperature setting embryo includes the inter-row embryo cloth after the low-temperature water drying process, which passes through the overfeed part of the setting machine and the high-temperature drying oven part in sequence and then exits the machine.

8. The method according to claim 7, characterized in that The oven temperature of the molding machine during high-temperature molding is 190-205°C; Preferably, the wind force of the setting machine during high-temperature setting is 50% to 100%; Preferably, during the high-temperature setting, the inter-row cloth is kept in an oven area with a temperature of 190-205° C. for 15-25 seconds.

9. The method according to any one of claims 1 to 8, characterized in that The method comprises the following steps: First, the inter-row cloth is dried by low-temperature water. The low-temperature water drying includes the inter-row cloth passing through a sizing machine, passing through a sizing tank with water temperature of 20-30°C, and then pressing with a pressure of 4-6 bar, and then overfeeding. The cloth is then dried at low temperature in an oven at a temperature of 100-140°C and a wind speed of 40%-100% before leaving the machine. The temperature of the cloth leaving the machine is 100-140°C. The inter-row cloth after low-temperature water drying is then subjected to high-temperature setting. The high-temperature setting includes the following steps: the inter-row cloth after the low-temperature water drying is first passed through the overfeeding part of the setting machine, and then passed through the high-temperature drying part before exiting the machine. The temperature of the high-temperature drying part is 190-205°C and the wind speed is 50%-100%. During the high-temperature setting, the inter-row cloth is kept in the drying area with a temperature of 190-205°C for 15-25 seconds, and then the inter-row cloth is washed in the dye vat, loosened by dehydration, dried in the setting machine and set as a finished product to obtain the finished inter-row cloth; According to the mass percentage of the inter-row cloth grey cloth being 100wt%, the inter-row cloth grey cloth includes 35wt% to 45wt% CD POLY, 25wt% to 35wt% acrylic fiber, 15wt% to 25wt% viscose fiber and 5wt% to 10wt% spandex, and the warp density CPI of the inter-row cloth grey cloth is 45 to 55, the transverse density WPI is 35 to 43, and the sealing degree is 167 to 205cm.

Citation Information

Patent Citations

  • Production technology of circulation color strip sink cloth

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