Active cashmere-like yarn and preparation process

Abstract

The invention discloses an active cashmere-shaped yarn and a preparation process, the active cashmere-shaped yarn comprises a core yarn, a decorative yarn and a covering yarn, the decorative yarn is twisted on the core yarn and located between the core yarn and the covering yarn, the covering yarn is twisted on the decorative yarn, and the twisting direction of the covering yarn is opposite to that of the decorative yarn; the decorative yarns and the covering yarns form cashmere-shaped fluff through an active treatment process in the processing process; the decorative yarn and the covering yarn are composed of chinlon filaments, and the core yarn is composed of polyester filaments and spandex filaments. By taking the dry mass of the active cashmere-shaped yarn as a reference, the proportions of various materials are as follows: 70%-80% of polyester, 15%-20% of chinlon and 4%-10% of spandex, the elasticity and soft and light hand feeling of real cashmere are reproduced, the warm keeping effect is good, meanwhile, the cost is lower, and pilling is not easy to occur after sanding treatment.

Description

Technical Field

[0001] The invention relates to an active cashmere-like yarn and a preparation process thereof, belonging to the technical field of textiles. Background Art

[0002] Cashmere is an extremely precious and high-quality natural animal fiber, also known as "fiber diamond" or "soft gold." Grown primarily on the inner layer of goat skin, cashmere is used to protect against harsh cold weather. Cashmere is widely used in the textile industry due to its lightness, softness, warmth, moisture-wicking breathability, and high elasticity. However, cashmere is difficult to harvest, resulting in low production and a high price. Cashmere also has drawbacks such as pilling and the need for meticulous care. Consequently, imitation cashmere yarns have emerged on the market, produced using chemical fibers or blends of chemical fibers with relatively inexpensive natural fibers (such as ordinary wool). However, most existing imitation cashmere yarns can only mimic cashmere in certain aspects and cannot compare to genuine cashmere yarn in many aspects. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide an active cashmere-like yarn and a preparation process to solve the existing problems.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: it includes core yarn, decorative yarn and covering yarn, the decorative yarn is twisted on the core yarn and is located between the core yarn and the covering yarn, the covering yarn is twisted on the decorative yarn and its twist direction is opposite to that of the decorative yarn; the decorative yarn and the covering yarn are subjected to an active treatment process during the processing to form cashmere-like fluff, and the cashmere-like fluff can not only reproduce the plush and soft feel of cashmere, but also form an air layer near the fabric, thereby enhancing the warming effect of the fabric using the present invention; the decorative yarn and the covering yarn are composed of nylon filaments. As the part that directly contacts the outside world, nylon has a soft and comfortable feel, a tough texture, and good wear resistance, and is responsible for providing the present invention with a soft and light feel and good wear resistance. The core yarn is composed of polyester filaments and spandex filaments. Spandex has strong elasticity and is mainly responsible for providing the present invention with elasticity close to cashmere; polyester is mainly used as a reinforcing layer to ensure the strength of the core yarn. Based on the dry mass of the active cashmere-like yarn, the proportions of various materials are: polyester 75%-80%, nylon 15%-20%, and spandex 4%-10%.

[0005] Preferably, the active treatment of the decorative yarn and the covering yarn includes a sanding treatment of the decorative yarn and the covering yarn, wherein the sanding treatment produces cashmere-like hairs with a length of 0.1 mm to 1.5 mm on the decorative yarn and the covering yarn, wherein the density of the cashmere-like hairs after the sanding treatment is related to the intensity of the sanding treatment. In addition to enhancing the yarn's feel and thermal insulation properties, the sanded nylon filament also overcomes the disadvantage of being prone to pilling.

[0006] Preferably, the fineness of the nylon filaments is 100D-250D, the spandex filaments in the core yarn (1) are 20-70D, and the polyester filaments are 70-180D.

[0007] Preferably, in the cross section of the reactive cashmere-like yarn, the number of the nylon filament, the spandex filament and the polyester filament is no less than one.

[0008] Preferably, the fiber count of the polyester filament and the nylon filament is 24-72F, and the spandex filament is a single fiber. Under other conditions unchanged, the higher the number of single fibers of the filament, the softer the hand feel and the finer the fabric.

[0009] Preferably, in order to enhance the strength of the core yarn and ensure the overall structural stability of the present invention, the number of the polyester filaments is greater than that of the spandex filaments.

[0010] Preferably, in order to enhance the strength of the core yarn and ensure the overall structural stability of the present invention, the denier of the polyester filaments is greater than the denier of the spandex filaments.

[0011] The present invention also provides a preparation process for the active cashmere-like yarn, which comprises the following steps: S10: Pre-spinning the polyester filament, nylon filament and spandex filament to prepare for the subsequent preparation of core yarn, decorative yarn and covering yarn; S20: Using a fancy twisting machine, polyester filament and spandex filament are used as core yarns, while nylon filament is fed as decorative yarn and covering yarn to produce fancy yarn through twisting; S30: Use a suede machine to perform suede treatment on the decorative yarn and covering yarn; S40: skeining the active cashmere yarn; S50: steaming the active cashmere yarn; S60: reeling the active cashmere yarn.

[0012] Preferably, S10 is to pre-treat each raw material by immersing it in a treatment solution of 5-10 parts by weight of crude oil, 1-8 parts by weight of an antistatic agent, and 75-90 parts by weight of water, and letting it stand for 18-24 hours and then drying. The purpose of pre-treatment is to reduce friction and static electricity generated by the fiber during processing, and also to improve the antistatic properties of the finished yarn. The antistatic agent is one of antistatic agent SN42, antistatic agent SN52, and antistatic agent SN62.

[0013] Preferably, in S20, the working conditions of the fancy twisting machine are: the inner twist is 650-950 twists / m, the twist direction is "Z"; the outer twist is 300-750 twists / m, the twist direction is "S"; the overfeed ratio is 1.5-2.5, and the speed is 7500-8500 rpm.

[0014] Preferably, in S30, a double-grinding sanding machine is used, which has a higher sanding efficiency and can overcome the problem of less fluff and uneven length and quantity after a single sanding with a single grinding stone. The sanding roller of the double-grinding sanding machine is ceramic. The characteristics of ceramic material are high hardness, uniform friction and high temperature resistance. The working conditions of the sanding machine are: roller speed 800-1500rpm, pressure 40-100N, tension 10-18cN.

[0015] Preferably, in S40, the skein has a gram weight of 200-240 grams per skein.

[0016] Preferably, in S50, the yarn steaming temperature is 75-85° C. and the time is 30-60 minutes.

[0017] Preferably, in S60, when rewinding, it should be ensured that all kinds of defects are removed, and the threshold control is: coarse place is 120-145%, and fine place is controlled at 40-50%.

[0018] The beneficial effects of the present invention are: reproducing the elasticity and soft and light feel of real cashmere, having good warmth-keeping effect, having low cost, and being less likely to pill after being sanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings: Figure 1 This is a schematic diagram of the overall structure of an active cashmere-like yarn in the present invention; Figure 2 This is a schematic diagram of the structure of an active cashmere-like yarn after activation treatment in the present invention; Figure 3 This is a flow chart of a process for preparing an active cashmere-like yarn according to the present invention; In the figure, 1-core yarn, 2-decorating yarn, 3-covering yarn, 4-cashmere-like wool. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See Figure 1The present invention provides an active cashmere-like yarn, comprising a core yarn 1, a decorative yarn 2 and a covering yarn 3, wherein the decorative yarn 2 is twisted on the core yarn 1 and is located between the core yarn 1 and the covering yarn 3, and the covering yarn 3 is twisted on the decorative yarn 2 and its twist direction is opposite to that of the decorative yarn 2; the decorative yarn 1 and the covering yarn 3 are subjected to an active treatment process during the processing to form cashmere-like hair 4, and the cashmere-like hair 4 can not only reproduce the plush and soft feel of cashmere, but also form an air layer near the fabric, thereby enhancing the warmth-keeping effect of the fabric using the present invention; the decorative yarn 2 and the covering yarn 3 are composed of nylon filaments, which are the parts that directly contact the outside world. Nylon has a soft and comfortable feel, a tough texture, and good wear resistance, and is responsible for providing the present invention with a soft and light feel and good wear resistance. The core yarn 1 is composed of polyester filaments and spandex filaments. Spandex has strong elasticity and is mainly responsible for providing the present invention with elasticity close to cashmere; polyester is mainly used as a reinforcing layer to ensure the strength of the core yarn. Based on the dry mass of the active cashmere-like yarn, the proportions of various materials are: polyester 75%-80%, nylon 15%-20%, and spandex 4%-10%.

[0022] See Figure 2 The active treatment of the decorative yarn and the covering yarn includes a sanding treatment of the decorative yarn and the covering yarn. The sanding treatment produces cashmere-like hairs 4 with a length of 0.1 mm to 1.5 mm. The density of the cashmere-like hairs 4 after the sanding treatment is related to the intensity of the sanding treatment. The sanded nylon filament not only enhances the yarn's feel and thermal insulation properties, but also overcomes the disadvantage of pilling.

[0023] Preferably, the fineness of the nylon filament is 100D-250D, the spandex filament in the core yarn 1 is 20-70D, and the polyester filament is 70-180D.

[0024] Preferably, the number of the nylon filament, spandex filament and polyester filament is no less than 1.

[0025] Preferably, the polyester filament and nylon filament have a monofilament count of 24-72F, and the spandex filament is a single fiber (i.e., 1F). Under other conditions remaining unchanged, the higher the monofilament count of the filament, the softer the hand feel and the finer the fabric.

[0026] Preferably, in order to enhance the strength of the core yarn and ensure the overall structural stability of the present invention, the number of the polyester filaments is greater than that of the spandex filaments.

[0027] Preferably, in order to enhance the strength of the core yarn and ensure the overall structural stability of the present invention, the denier of the polyester filaments is greater than the denier of the spandex filaments.

[0028] See Figure 3 The present invention also provides a preparation process of the active cashmere-like yarn, comprising the following steps: S10: Pre-spinning the polyester filament, nylon filament and spandex filament to prepare for the subsequent preparation of core yarn, decorative yarn and covering yarn; S20: Using a fancy twisting machine, polyester filament and spandex filament are used as core yarns, while nylon filament is fed as decorative yarn and covering yarn to produce fancy yarn through twisting; S30: Use a suede machine to perform suede treatment on the decorative yarn and covering yarn; S40: skeining the active cashmere yarn; S50: steaming the active cashmere yarn; S60: reeling the active cashmere yarn.

[0029] Preferably, S10 is to pre-treat each raw material by immersing it in a treatment solution of 5-10 parts by weight of crude oil, 1-8 parts by weight of an antistatic agent, and 75-90 parts by weight of water, and letting it stand for 18-24 hours and then drying. The purpose of pre-treatment is to reduce friction and static electricity generated by the fiber during processing, and also to improve the antistatic properties of the finished yarn. The antistatic agent is one of antistatic agent SN42, antistatic agent SN52, and antistatic agent SN62.

[0030] Preferably, in S20, the working conditions of the fancy twisting machine are: the inner twist is 650-950 twists / m, the twist direction is "Z"; the outer twist is 300-750 twists / m, the twist direction is "S"; the overfeed ratio is 1.5-2.5, and the speed is 7500-8500 rpm.

[0031] Preferably, in S30, a double-grinding sanding machine is used, which has a higher sanding efficiency and can overcome the problem of less fluff and uneven length and quantity after a single sanding with a single grinding stone. The sanding roller of the double-grinding sanding machine is ceramic. The characteristics of ceramic material are high hardness, uniform friction and high temperature resistance. The working conditions of the sanding machine are: roller speed 800-1500rpm, pressure 40-100N, tension 10-18cN.

[0032] Preferably, in S40, the skein has a gram weight of 200-240 grams per skein.

[0033] Preferably, in S50, the yarn steaming temperature is 75-85° C. and the time is 30-60 min.

[0034] Preferably, in S60, when rewinding, it should be ensured that all kinds of defects are removed, and the threshold control is: coarse place is 120-145%, and fine place is controlled at 40-50%.

[0035] The following are specific embodiments of the above scheme: Example 1 As a preferred embodiment of this embodiment, based on the dry weight of the active cashmere-like yarn, the proportions of various materials are: polyester 78%, nylon 18%, and spandex 4%. The fineness of the nylon filaments is 120D / 36F, the spandex filaments in the core yarn are 40D / 1F, and the polyester filaments are 80D / 36F.

[0036] As a preferred embodiment of this embodiment, S10 is to pre-treat each raw material by immersing it in a treatment solution composed of 5 parts by weight of crude oil, 2.5 parts by weight of an antistatic agent, and 75 parts by weight of water, and then letting it stand for 18 hours and drying. In this embodiment, the antistatic agent is antistatic agent SN42.

[0037] As a preferred implementation of this embodiment, in S20, the working conditions of the fancy twisting machine are: the inner twist is 800 twists / m, the twist direction is "Z"; the outer twist is 500 twists / m, the twist direction is "S"; the overfeed ratio is 2.5, and the speed is 8000 rpm.

[0038] As a preferred embodiment of this embodiment, in S30, the working conditions of the sueding machine are: roller speed 1000 rpm, pressure 60 N, tension 12 cN. In this case, the obtained fuzz length is about 0.5-1 mm.

[0039] As a preferred implementation of this embodiment, in S40, the skein weight is 200 grams per skein.

[0040] As a preferred implementation of this embodiment, in S50, the yarn steaming temperature is 82° C. and the time is 35 minutes.

[0041] As a preferred implementation of this embodiment, in S60, the threshold control is: the coarse part is 130%, and the fine part is controlled at 45%.

[0042] Example 2 As a preferred embodiment of this embodiment, based on the dry weight of the active cashmere-like yarn, the proportions of various materials are as follows: polyester 75%, nylon 15%, and spandex 10%. The nylon filaments have a fineness of 100D / 24F, the spandex filaments in the core yarn are 20D / 1F, and the polyester filaments are 70D / 24F. By appropriately increasing the spandex proportion and reducing the spandex denier, the elasticity of the active cashmere-like yarn provided by this embodiment is enhanced, making it suitable for fabrics and apparel requiring high stretch.

[0043] As a preferred embodiment of this embodiment, S10 is to pre-treat each raw material by immersing it in a treatment solution of 8 parts by weight of crude oil, 4.5 parts by weight of an antistatic agent, and 80 parts by weight of water, and then letting it stand for 24 hours and drying. In this embodiment, the antistatic agent is antistatic agent SN52.

[0044] As a preferred implementation of this embodiment, in S20, the working conditions of the fancy twisting machine are: the inner twist is 650 twists / m, the twist direction is "Z"; the outer twist is 300 twists / m, the twist direction is "S"; the overfeed ratio is 2.5, and the speed is 7500 rpm.

[0045] As a preferred embodiment of this embodiment, in S30, the roller speed is 1000 rpm, the pressure is 70 N, and the tension is 15 cN. In this case, the obtained pile length is about 0.5-1 mm.

[0046] As a preferred implementation of this embodiment, in S40, the skein weight is 200 grams per skein.

[0047] As a preferred implementation of this embodiment, in S50, the yarn steaming temperature is 82° C. and the time is 35 minutes.

[0048] As a preferred implementation of this embodiment, in S60, when rewinding, the threshold control is: the thick part is 120%, and the fine part is controlled at 40%.

[0049] Example 3 This example is similar to Example 1, except that, as a preferred embodiment of this example, in S30, the operating conditions of the sueding machine are: roller speed 800 rpm, pressure 40 N, and tension 10 cN. Under these settings, the sueding intensity is lower than that of Example 1, resulting in fewer, shorter fuzz (approximately 0.1-0.3 mm) and a smooth, delicate feel.

[0050] Example 4 This example is similar to Example 1, except that, as a preferred embodiment of this example, in S30, the suede sanding machine operates under the following conditions: roller speed 1500 rpm, pressure 100 N, and tension 18 cN. This setting produces a higher suede sanding intensity than in Example 1, resulting in long, dense pile (approximately 1-1.5 mm), with a fluffy, soft, but slightly rough feel.

[0051] Example 5 This example is similar to Example 1, except that, as a preferred embodiment of this example, based on the dry weight of the active cashmere-like yarn, the proportions of various materials are: polyester 76%, nylon 20%, and spandex 4%. This example moderately increases the nylon content of the covering and trim yarns, thereby improving its wear resistance and strength. This example is suitable for applications requiring high wear resistance, such as sock manufacturing. The nylon filaments have a fineness of 120D / 48F, the spandex filaments in the core yarn are 40D / 1F, and the polyester filaments are 80D / 48F.

[0052] As a preferred embodiment of this embodiment, S10 is to immerse each raw material in a treatment solution of 10 parts by weight of crude oil, 8 parts by weight of antistatic agent, and 90 parts by weight of water for pretreatment, and then stand for 24 hours and dry. In this embodiment, the antistatic agent is antistatic agent SN52.

[0053] As a preferred implementation of this embodiment, in S20, the working conditions of the fancy twisting machine are: the inner twist is 950 twists / m, the twist direction is "Z"; the outer twist is 750 twists / m, the twist direction is "S"; the overfeed ratio is 2.5, and the speed is 8500 rpm.

[0054] As a preferred implementation of this embodiment, in S30, the working conditions are: the working conditions of the suede sanding machine are: roller speed 800 rpm, pressure 50 N, tension 10 cN, short pile length (about 0.1-0.3 mm), and delicate and smooth feel.

[0055] As a preferred implementation of this embodiment, in S40, the skein weight is 200 grams per skein.

[0056] As a preferred implementation of this embodiment, in S50, the yarn steaming temperature is 82° C. and the time is 35 minutes.

[0057] As a preferred implementation of this embodiment, in S60, when rewinding, the threshold control is: the thick part is 145%, and the fine part is controlled at 50%.

[0058] Example 6 This example is similar to Example 1, except that, as a preferred embodiment of this example, based on the dry mass of the active cashmere-like yarn, the proportions of the various materials are: polyester 80%, nylon 16%, and spandex 4%. This example appropriately increases the content of polyester, one of the core yarn components. Polyester has good thermoplasticity and low moisture absorption, making this example suitable for fabrics or garments requiring set or quick-drying properties. The nylon filaments have a fineness of 250D / 72F, the spandex filaments in the core yarn are 70D / 1F, and the polyester filaments are 180D / 72F.

[0059] As a preferred embodiment of this embodiment, S10 is to pre-treat each raw material by immersing it in a treatment solution of 8 parts by weight of crude oil, 5 parts by weight of an antistatic agent, and 80 parts by weight of water, and then letting it stand for 20 hours and drying. In this embodiment, the antistatic agent is antistatic agent SN62.

[0060] As a preferred implementation of this embodiment, in S20, the working conditions of the fancy twisting machine are: the inner twist is 750 twists / m, the twist direction is "Z"; the outer twist is 600 twists / m, the twist direction is "S"; the overfeed ratio is 2.5, and the speed is 8200 rpm.

[0061] As a preferred embodiment of this embodiment, in S30, the working conditions are: the working conditions of the suede sanding machine are: roller speed 1200 rpm, pressure 90 N, tension 17 cN. The pile is long and dense (about 1-1.5 mm), and feels fluffy and soft but slightly rough.

[0062] As a preferred implementation of this embodiment, in S40, the skein weight is 200 grams per skein.

[0063] As a preferred implementation of this embodiment, in S50, the yarn steaming temperature is 82° C. and the time is 35 minutes.

[0064] As a preferred implementation of this embodiment, in S60, when rewinding, the threshold control is: the thick part is 135%, and the fine part is controlled at 48%.

[0065] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0066] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An active cashmere-like yarn, characterized in that: The invention comprises a core yarn (1), a decorative yarn (2) and a covering yarn (3), wherein the decorative yarn (2) is twisted on the core yarn (1) and is located between the core yarn (1) and the covering yarn (3), and the covering yarn (3) is twisted on the decorative yarn (2) and its twist direction is opposite to that of the decorative yarn (2); the decorative yarn (1) and the covering yarn (3) are subjected to an active treatment process during processing to form cashmere-like fluff; the decorative yarn (2) and the covering yarn (3) are composed of nylon filaments, and the core yarn (1) is composed of polyester filaments and spandex filaments; based on the dry mass of the active cashmere-like yarn, the proportions of various materials are as follows: polyester 75%-80%, nylon 15%-20%, and spandex 4%-10%.

2. The active cashmere-like yarn according to claim 1, characterized in that: The active treatment of the decorative yarn (1) and the covering yarn (3) comprises a sanding treatment of the decorative yarn (1) and the covering yarn (3), The sanding treatment sands the decorative yarn (1) and the covering yarn (3) into cashmere-like hair (4) with a length of 0.1 mm to 1.5 mm. The density of the cashmere-like hair (4) after the sanding treatment is related to the intensity of the sanding treatment.

3. The active cashmere-like yarn according to claim 1, characterized in that: The fineness of the nylon filament is 100D-250D, the spandex filament in the core yarn (1) is 20-70D, and the polyester filament is 70-180D.

4. The active cashmere-like yarn according to claim 1, characterized in that: in, The number of the nylon filament, spandex filament and polyester filament is not less than 1. The polyester filament and the nylon filament have a fiber number of 24-72F, and the spandex filament is a single fiber.

5. The active cashmere-like yarn according to claim 1, characterized in that: The number of the polyester filaments is greater than that of the spandex filaments.

6. A process for preparing the active cashmere-like yarn according to any one of claims 1 to 5, wherein: The following steps are involved: S10: Pre-spinning the polyester filaments, nylon filaments and spandex filaments to prepare for the subsequent preparation of core yarn (1), decorative yarn (2) and covering yarn (3); S20: using a fancy twisting machine, polyester filament and spandex filament are used as core yarn (1), and nylon filament is fed as decorative yarn (2) and covering yarn (3) at the same time, and fancy yarn is produced by twisting; S30: performing a sanding process on the decorative yarn (2) and the covering yarn (3) using a sanding machine; S40: skeining the active cashmere yarn; S50: steaming the active cashmere yarn; S60: reeling the active cashmere yarn.

7. The process for preparing the active cashmere yarn according to claim 6, wherein: S10 is to immerse various raw materials in a treatment solution of 5-10 parts by weight of crude oil, 1-8 parts by weight of antistatic agent and 75-90 parts by weight of water for pretreatment, and let them stand for 18-24 hours and then dry.

8. The process for preparing the active cashmere yarn according to claim 6, wherein: In S20, the working conditions of the fancy twisting machine are: internal twist twist of 650-950 twists / m, twist direction is "Z"; external twist twist of 300-750 twists / m, twist direction is "S"; overfeed ratio is 1.5-2.5, and speed is 7500-8500 rpm.

9. The process for preparing the active cashmere yarn according to claim 6, wherein: In S30, a double-grinding sanding machine is used, wherein the sanding rollers of the double-grinding sanding machine are ceramic, and the working conditions of the sanding machine are: roller speed 800-1500 rpm, pressure 40-100 N, and tension 10-18 cN.

10. The process for preparing active cashmere yarn according to claim 9, characterized in that: In S40, the skein weight is 200-240 g per skein; In S50, the yarn steaming temperature is 75-85°C and the time is 30-60 min; In S60, when rewinding, the threshold control is: 120-145% for coarse sections and 40-50% for fine sections.

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