Tear-resistant fine fabric and processing technology thereof

Abstract

The invention relates to the technical field of fabrics, in particular to a tear-resistant fine fabric and a processing technology of the tear-resistant fine fabric. 20 to 30 parts of high-strength polyester fiber; 10 to 20 parts of fine denier spandex filaments; the preparation method comprises the following steps: step 1, a raw material pretreatment stage; 2, a spinning stage; step 3, weaving stage; and step 4, an after-finishing stage. According to the tear-resistant fine fabric and the processing technology thereof, a cross-linked network structure is formed on the surface of the fabric by using the waterborne polyurethane resin and the cross-linking agent, so that the tear resistance of the fabric is remarkably enhanced; due to the slender and soft characteristics of the long stapled cotton fibers and the addition of the nano-scale natural protein fibers, a good fine texture foundation is laid for the fabric. And the fabric is treated by using an environment-friendly softening agent through a softening finishing process, so that the hand feeling of the fabric is softer and smoother, and meanwhile, the tear resistance of the fabric is not influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of fabrics, and specifically to a tear-resistant and delicate fabric and its processing technology. Background Art

[0002] In the current fabric market, consumers have increasingly high requirements for the performance and texture of fabrics. On the one hand, many fabrics are prone to tearing during daily use. For example, when outdoor sports clothing fabrics are pulled by external forces, or when home textile products are rubbed and pulled during use and washing, which greatly affects the service life and use experience of fabric products; on the other hand, delicate texture is also one of the important factors in measuring fabric quality. Rough fabrics are not only uncomfortable to wear or use, but also lack a high-class appearance. However, existing fabrics often have difficulty in simultaneously combining the advantages of tear resistance and delicate texture. Traditional methods of improving tear resistance may cause the fabric to become thick and stiff, thus losing its delicate handfeel; while fabrics that focus on delicate texture often perform poorly in tear strength. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the present invention provides a tear-resistant and delicate fabric and its processing technology.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the present invention provides the following technical solution: A tear-resistant and delicate fabric, comprising the following raw materials in parts by weight:

[0007] Long-staple cotton fiber: 30 - 50 parts;

[0008] High-strength polyester fiber: 20 - 30 parts;

[0009] Fine-denier spandex filament: 10 - 20 parts;

[0010] Nanoscale natural protein fiber: 5 - 15 parts.

[0011] The present invention further provides a processing technology for a tear-resistant and delicate fabric, comprising the following steps:

[0012] Step 1, raw material pretreatment stage: After respectively weighing the long-staple cotton fiber, high-strength polyester fiber, fine-denier spandex filament, and nanoscale natural protein fiber according to the above parts by weight, put them into a carding machine for carding treatment to loosen the fiber bundle into a single fiber state to ensure the uniformity of subsequent mixing, and spray an appropriate amount of deionized water on the mixed fiber raw materials for humidification treatment;

[0013] Step 2, Spinning Stage: Feed the pre-treated mixed fiber raw materials into a carding machine. Through the carding action of the carding machine, the fibers are further straightened and arranged in parallel to form continuous fiber strips. Perform a drawing operation on the obtained fiber strips, adopting a three-pass drawing process to further improve the straightening parallelism and mixing uniformity of the fibers. Spin the roving into yarn through a ring spinning frame;

[0014] Step 3, Weaving Stage: Wind a certain number of yarns parallelly onto a warp beam for warping, and then perform sizing treatment. Through sizing, a protective film is formed on the surface of the warp yarns to enhance the wear resistance and tensile resistance of the warp yarns. Then, use a rapier loom for weaving;

[0015] Step 4, Post-treatment Stage: Conduct softening treatment, anti-tearing treatment, and pre-shrinking and shaping on the fabric.

[0016] Preferably, in Step 1, the opening treatment time is controlled at 15 - 30 minutes according to the initial state of the fibers, and the rotational speed of the opener is set at 800 - 1200 revolutions per minute. After completion of opening, fully mix the various fibers in a blending machine for 20 - 40 minutes to ensure uniform distribution of various fibers and form mixed fiber raw materials.

[0017] Preferably, in Step 1, spray an appropriate amount of deionized water onto the mixed fiber raw materials for humidification treatment to control the moisture content of the fibers at 8% - 12%, facilitating subsequent carding processing. Meanwhile, use an air current impurity removal device to remove impurities in the fibers to ensure the purity of the fibers. The air current speed is set at 10 - 15 m / s, and the impurity removal time is 10 - 20 minutes.

[0018] Preferably, in Step 2, the rotational speed of the cylinder of the carding machine is set at 300 - 500 revolutions per minute, and the rotational speed of the doffer is set at 20 - 30 revolutions per minute;

[0019] The roller speed of each drawing process is reasonably set between 150 - 250 m / min according to the thickness of the fiber strip and the equipment performance, and the draft multiple is controlled at 6 - 10 times. After completion of drawing, perform the roving process. The spindle speed of the roving frame is set at 600 - 1000 revolutions per minute, and the twist factor is controlled between 80 - 120 to twist the fiber strip into roving;

[0020] The spindle speed of the ring spinning frame is set at 12000 - 18000 revolutions per minute, and the twist is adjusted according to the required strength and hand feeling of the fabric, generally controlled at 800 - 1200 turns per meter. The spun yarn is then subjected to winding treatment through a winding machine to remove defects and impurities in the yarn. The winding speed is set at 800 - 1200 m / min.

[0021] Preferably, in step 3, a certain number of fine yarns are wound parallelly on a warp beam, the warping speed is controlled at 300 - 500 meters per minute, and the tension is uniform and moderate to ensure the neat arrangement of the warp yarns. Subsequently, sizing treatment is carried out. An environment-friendly sizing agent is selected, and the sizing agent is prepared according to the ratio of the weight of the sizing agent to the yarn of 1:5 - 1:8. The sizing temperature is controlled at 90 - 100 °C, and the squeezing pressure is set at 10 - 20 kN. A protective film is formed on the surface of the warp yarns through sizing, and the loom speed is 400 - 800 revolutions per minute.

[0022] Preferably, in step 4, the greige cloth obtained by weaving is put into a finishing solution containing an environment-friendly softener for softening finishing. The dosage of the softener is 3% - 5% of the weight of the greige cloth, the temperature of the finishing solution is controlled at 40 - 50 °C, and the treatment time is 20 - 30 minutes;

[0023] Prepare an anti-tear finishing solution, which contains an appropriate amount of waterborne polyurethane resin and a crosslinking agent. The dosage of the waterborne polyurethane resin is 5% - 8% of the weight of the greige cloth, and the dosage of the crosslinking agent is 2% - 5% of the weight of the waterborne polyurethane resin. Immerse the greige cloth in the anti-tear finishing solution and treat it at a temperature of 50 - 60 °C for 30 - 40 minutes, and then carry out drying. The drying temperature is set at 100 - 120 °C;

[0024] The fabric that has undergone softening and anti-tear finishing is subjected to pre-shrinking treatment. The hot and humid pre-shrinking method is adopted. The fabric is soaked in hot water containing an appropriate amount of wetting agent for 10 - 15 minutes, the water temperature is controlled at 70 - 80 °C, and then mechanical squeezing pre-shrinking is carried out. The pre-shrinking rate is controlled at 3% - 5% to reduce the shrinkage phenomenon of the fabric during subsequent use. After pre-shrinking is completed, setting treatment is carried out. The setting temperature is set at 150 - 180 °C, and the setting time is 30 - 60 seconds to make the size of the fabric stable and the appearance flat, and finally obtain a finished fabric with anti-tear and delicate properties.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, the present invention provides a fabric with anti-tear and delicate properties and its processing technology, having the following beneficial effects:

[0027] For the fabric with anti-tear and delicate properties and its processing technology, a crosslinked network structure is formed on the fabric surface by using waterborne polyurethane resin and a crosslinking agent, significantly enhancing the anti-tear ability of the fabric;

[0028] The slender and soft characteristics of the long-staple cotton fiber itself and the addition of nano-scale natural protein fiber lay a good foundation for the delicate texture of the fabric. After the softening finishing process, the fabric is treated with an environment-friendly softener, making its hand feel softer and smoother, and at the same time not affecting the anti-tear performance of the fabric;

[0029] The several selected fiber raw materials each have their own characteristics and cooperate with each other synergistically. Long-staple cotton fibers provide comfortable skin-friendly properties and a certain basic strength; high-strength polyester fibers focus on enhancing the overall tear resistance; fine-denier spandex filaments endow the fabric with good elasticity, enabling the fabric to stretch moderately with body movements or external forces during wearing or use and not being easily damaged due to excessive stretching; nano-scale natural protein fibers optimize the fineness and skin-friendliness of the fabric. This way of the synergistic action of multiple fibers optimizes the comprehensive performance of the fabric and overcomes the performance shortfalls of single-fiber fabrics. Detailed implementation manners

[0030] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Implementation in the raw material pretreatment stage:

[0032] Implementation of fiber opening and mixing: Accurately weigh 40 parts of long-staple cotton fibers, 25 parts of high-strength polyester fibers, 15 parts of fine-denier spandex filaments, and 10 parts of nano-scale natural protein fibers, and put them into the opener respectively. Set the rotation speed of the opener at 1000 revolutions per minute and carry out the opening treatment for 20 minutes to loosen each fiber into a single-fiber state. Then transfer all the opened fibers to the cotton mixer, start the cotton mixer, and make it fully mix at a stirring speed of 30 revolutions per minute for 30 minutes to ensure the uniform distribution of various fibers and obtain the mixed fiber raw material.

[0033] Implementation of fiber humidification and impurity removal: Use a spray device to evenly spray deionized water on the mixed fiber raw material, and monitor the moisture content of the fibers through a humidity sensor while spraying to make it reach about 10%. Subsequently, feed the humidified fiber raw material into the air current impurity removal device, set the air current speed at 12 m / s, and carry out the impurity removal treatment for 15 minutes to remove impurities such as dust and short fibers in the fibers, ensure the purity of the fibers, and prepare for the subsequent spinning process.

[0034] Implementation in the spinning stage:

[0035] Implementation of carding into sliver: Feed the pretreated mixed fiber raw material into the carding machine, set the cylinder rotation speed of the carding machine at 400 revolutions per minute and the doffer rotation speed at 25 revolutions per minute, start the carding machine for carding to further straighten and parallelize the fibers to form a continuous fiber sliver. Pay attention to observing the quality of the fiber sliver during the process to avoid excessive damage to the fibers.

[0036] Drawing and roving implementation: Three drawing operations are performed on the drawn sliver. During the first drawing, the roller speed is set at 200 m / min, and the draft ratio is controlled at 8 times. During the second drawing, the roller speed is adjusted to 220 m / min, and the draft ratio is 7 times. During the third drawing, the roller speed is set at 240 m / min, and the draft ratio is 6 times to further improve the straightness, parallelism, and mixing uniformity of the fibers. After drawing, the sliver is fed into a roving frame. The spindle speed of the roving frame is set at 800 r / min, and the twist factor is controlled at around 100 to twist the sliver into roving.

[0037] Spinning and winding implementation: The roving is put into a spinning frame to spin into yarn. The spindle speed of the spinning frame is set at 15000 r / min, and the twist is adjusted to 1000 turns / m to ensure that the yarn has appropriate strength and fineness. The spun yarn is then subjected to winding treatment on a winding machine. The winding speed is set at 1000 m / min to remove defects and impurities in the yarn, ensuring good quality and package forming of the yarn, which is convenient for subsequent warping process.

[0038] Weaving stage implementation:

[0039] Warping and sizing implementation: The wound yarn is warped according to the fabric design requirements. The warping speed is controlled at 400 m / min. Through the tension adjustment device, the warp tension is ensured to be uniform and moderate, and the warp yarn is neatly wound on the warp beam. Then sizing treatment is carried out. An environmentally friendly starch-based sizing agent is selected, and the sizing agent is prepared according to the ratio of sizing agent to yarn weight of 1:6. The sizing temperature is set at 95 °C, and the squeezing pressure is set at 15 kN to form a protective film on the surface of the warp yarn, enhancing the wear resistance and tensile resistance of the warp yarn and improving the weavability of the yarn.

[0040] Weaving implementation: Air-jet loom is used for weaving. The loom speed is controlled at 600 r / min to ensure the smooth progress of the weaving process and weave the grey fabric.

[0041] Post-finishing stage implementation:

[0042] Softening finishing implementation: A finishing solution containing an environmentally friendly silicone softener is prepared, and the dosage of the softener is 4% of the weight of the grey fabric. The woven grey fabric is put into the finishing solution, the temperature of the finishing solution is set at 45 °C, and the treatment time is 25 minutes to make the fabric fully absorb the softener, improving the hand feeling of the fabric and making it more delicate and soft.

[0043] Anti - tear finishing implementation: Prepare the anti - tear finishing solution. Weigh the water - based polyurethane resin, with its dosage being 6% of the weight of the grey cloth. Then, weigh the cross - linker according to 3% of the weight of the water - based polyurethane resin. After mixing the two evenly, soak the grey cloth in the anti - tear finishing solution and treat it at a temperature of 55°C for 35 minutes. Subsequently, put it into a drying device for drying, and set the drying temperature at 110°C, so that the active ingredients in the finishing solution form a cross - linked network structure on the fabric surface, enhancing the anti - tear performance of the fabric.

[0044] Pre - shrinking and shaping implementation: Use the wet - heat pre - shrinking method to pre - shrink the fabric. Soak the fabric in 75°C hot water containing an appropriate amount of wetting agent for 12 minutes, and then perform pre - shrinking through a mechanical extrusion device, with the pre - shrinking rate controlled at 4% to reduce the shrinkage phenomenon of the fabric during subsequent use. After pre - shrinking, send the fabric into a shaping machine for shaping treatment. Set the shaping temperature at 160°C and the shaping time at 45 seconds to make the fabric dimensionally stable and have a flat appearance, finally obtaining a finished fabric with anti - tear and delicate properties.

[0045] In this context, the mention of "embodiment" means that the specific features, structures, or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it particularly limited to its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0046] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present application.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A tear-resistant and fine fabric, characterized in that: The invention comprises the following raw materials in parts by weight: Long-staple cotton fiber: 30-50 parts; High-strength polyester fiber: 20-30 parts; Fine denier spandex yarn: 10-20 parts; Nano-scale natural protein fiber: 5-15 parts.

2. A processing technology for tear-resistant and fine fabrics, characterized in that: The steps include: Step 1, raw material pretreatment stage: long-staple cotton fiber, high-strength polyester fiber, fine-denier spandex yarn and nano-scale natural protein fiber are weighed according to the above weight parts, and put into an opener for opening treatment to loosen the fiber bundle into a single fiber state to ensure the uniformity of subsequent mixing, and spray an appropriate amount of deionized water on the mixed fiber raw material for humidification treatment; Step 2, spinning stage: the pre-treated mixed fiber raw material is fed into a carding machine, and the fibers are further straightened and arranged in parallel through the carding action of the carding machine to form continuous fiber strips, and the fiber strips obtained by carding are subjected to a drawing operation, and a three-pass drawing process is adopted to further improve the straightening parallelism and mixing uniformity of the fibers, and the roving is spun into spun yarn through a spinning frame; Step 3, weaving stage: a certain amount of fine yarn is wound parallely on the warp beam for warping, and then sizing is performed to form a protective film on the surface of the warp yarn to enhance the wear resistance and tensile strength of the warp yarn, and then the rapier loom is used for weaving; Step 4, finishing stage: softening, tear-resistant finishing, pre-shrinking and shaping the fabric.

3. The processing technology of a tear-resistant and fine fabric according to claim 2 is characterized in that: In step 1, the opening treatment time is controlled at 15-30 minutes according to the initial state of the fiber, and the speed of the opening machine is set to 800-1200 rpm. After the opening is completed, the fibers are fully mixed in a cotton mixer for 20-40 minutes to ensure that the various fibers are evenly distributed to form a mixed fiber raw material.

4. The processing technology of a tear-resistant and fine fabric according to claim 3 is characterized in that: In the step 1, a proper amount of deionized water is sprayed on the mixed fiber raw material for humidification treatment, so that the moisture content of the fiber is controlled at 8%-12%, which is convenient for subsequent combing processing. At the same time, an airflow impurity removal device is used to remove impurities in the fiber to ensure the purity of the fiber. The airflow speed is set to 10-15 m / s and the impurity removal time is 10-20 minutes.

5. The processing technology of a tear-resistant and fine fabric according to claim 4 is characterized in that: In the step 2, the cylinder speed of the carding machine is set to 300-500 rpm, and the doffer speed is set to 20-30 rpm; The roller speed of each drawing process is reasonably set between 150-250 m / min according to the thickness of the fiber strip and the performance of the equipment, and the drafting multiple is controlled at 6-10 times. After the drawing process is completed, the roving process is carried out, the spindle speed of the roving machine is set to 600-1000 rpm, and the twist coefficient is controlled between 80-120, so that the fiber strips are twisted to form roving; The spindle speed of the spinning frame is set at 12000-18000 rpm, and the twist is adjusted according to the strength and feel required by the fabric, generally controlled at 800-1200 twists / m. The spun yarn is then wound on a winding machine to remove defects and impurities in the yarn, and the winding speed is set at 800-1200 m / min.

6. The processing technology of a tear-resistant and fine fabric according to claim 5 is characterized in that: In step 3, a certain amount of spun yarn is wound in parallel on the warp beam, the warping speed is controlled at 300-500 m / min, the tension is uniform and moderate, and the warp yarns are ensured to be arranged neatly. Then, sizing treatment is performed, environmentally friendly sizing agent is selected, and the sizing agent is prepared according to a weight ratio of sizing agent to yarn of 1:5-1:8, the sizing temperature is controlled at 90-100°C, the sizing force is set to 10-20 kN, and a protective film is formed on the surface of the warp yarn by sizing, and the loom speed is 400-800 rpm.

7. The processing technology of tear-resistant and fine fabric according to claim 6 is characterized by: In the step 4, the woven grey fabric is placed in a finishing liquid containing an environmentally friendly softener for softening, the amount of the softener is 3%-5% of the weight of the grey fabric, the finishing liquid temperature is controlled at 40-50° C., and the treatment time is 20-30 minutes; Prepare an anti-tear finishing liquid, which contains an appropriate amount of water-based polyurethane resin and a cross-linking agent, wherein the amount of the water-based polyurethane resin is 5%-8% of the weight of the grey cloth, and the amount of the cross-linking agent is 2%-5% of the weight of the water-based polyurethane resin. Soak the grey cloth in the anti-tear finishing liquid, treat it at a temperature of 50-60°C for 30-40 minutes, and then dry it, and the drying temperature is set to 100-120°C; The fabrics that have been softened and tear-resistant are pre-shrinked by using the wet heat pre-shrinking method. The fabrics are soaked in hot water containing an appropriate amount of wetting agent for 10-15 minutes, and the water temperature is controlled at 70-80°C. Then mechanical extrusion pre-shrinkage is performed, and the pre-shrinkage rate is controlled at 3%-5% to reduce the shrinkage of the fabrics during subsequent use. After the pre-shrinkage is completed, the shaping treatment is performed, and the shaping temperature is set at 150-180°C and the shaping time is 30-60 seconds to stabilize the size of the fabric and make the appearance smooth, and finally obtain a tear-resistant and delicate finished fabric.