Production process of wool / cashmere triacetate lyocell fancy napping yarn

Abstract

The invention discloses a wool / cashmere triacetate lyocell fancy napping yarn production process, which comprises the following steps: preparing core yarns, fixed yarns and decorative yarns, and preparing and shaping napping yarns: drawing and roving cashmere card slivers, triacetate card slivers and wool card slivers to prepare the decorative yarns; the core yarn, the fixed yarn and the decorative yarn are prepared into fancy loop yarn on a fancy twisting machine, the fancy loop yarn is subjected to napping treatment, loops formed by the decorative yarn are napped to form fiber bundles clamped by the core yarn and the fixed yarn, and the fancy napping yarn is prepared. According to the production process of the wool / cashmere triacetate lyocell fancy napping yarn, the outer side of the formed fiber bundle is the cashmere fiber, and the interior of the formed fiber bundle is the triacetate fiber and the lyocell fiber, so that the cost can be reduced, and the hygroscopicity of the fluff part can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a wool cashmere triacetate lyocell fancy pulled wool yarn production process, and belongs to the technical field of fancy pulled wool yarn production. BACKGROUND

[0002] Wool fibers have excellent elasticity and warmth, but the felting property and itching of wool itself affect its use. Cashmere fiber belongs to a rare special animal fiber, not only has a rare yield (only accounts for 0.2% of the total yield of animal fibers in the world), but also has excellent quality, is traded by gram, and is considered as a "fiber gem" and a "fiber queen" by people, and is currently incomparable to all textile raw materials that can be used by humans. Cashmere products have a delicate and full appearance, a soft and smooth hand feeling, and are light and comfortable to wear, and have good warmth, but the length of the pile is limited, and the finished product has poor elasticity; the height of the pile and the smoothness of the hand feeling are affected by the washing process, and it is difficult to maintain a consistent style and poor elasticity.

[0003] The raw material of triacetate fiber is natural wood pulp, and the characteristics are soft hand feeling, good drape, non-crease, good thermoplasticity, which can make the fabric clothes keep the design style. And the luster is similar to that of mulberry silk, and the hand feeling is soft and smooth with elasticity. Cashmere fiber is a kind of excellent textile raw material, and the prepared fabric has the characteristics of softness, silkiness and the like under the premise of having warmth.

[0004] Lyocell fiber is a green textile and garment fabric, which not only has the comfort, good hand feeling and easy dyeing characteristics of natural cotton, but also has the environmental protection advantages that traditional viscose fibers do not have. Lyocell fiber uses renewable bamboo and wood pulp as raw material, and lyocell fiber can fully reproduce the natural properties of wood pulp, and even if the fiber is burned or rots, it can be biodegraded, and there is no waste and by-product.

[0005] Pulled wool yarn refers to the surface of the yarn being pulled to form long pile on the surface of the yarn, and has the characteristics of comfortable hand feeling, light comfort and good warmth. The application of cashmere fiber to pulled wool yarn can make good use of the delicate and soft and smooth hand feeling of cashmere. However, cashmere is expensive, and how to use other degradable fibers to prepare a cashmere fancy pulled wool yarn becomes a problem to be solved. SUMMARY

[0006] The purpose of the present application is to provide a wool cashmere triacetate lyocell fancy pulled wool yarn production process, which has pile on the surface of the yarn and soft and light hand feeling.

[0007] To solve the above technical problems, the purpose of the present application is achieved as follows: The wool cashmere triacetate lyocell fancy pulled wool yarn production process of the present application comprises the following steps: S1, preparation of core yarn: merino wool is prepared into wool roving yarn as core yarn by using the roving process; S2, preparation of fixed yarn: lyocell yarn prepared by cotton spinning production process is used as fixed yarn; S3, preparation of decoration yarn: cashmere sliver is prepared by combing, beating and carding processes; trichloroacetic acid sliver is prepared by trichloroacetic acid sliver, and wool sliver is prepared by wool sliver; Then, the cashmere sliver, trichloroacetic acid sliver and wool sliver are drawn on the drawing frame to form cashmere wool trichloroacetic acid mixed sliver, and then the cashmere wool trichloroacetic acid blended roving is prepared as decoration yarn by the roving process; S4, preparation of pulled yarn: the core yarn, fixed yarn and cashmere sliver are prepared into fancy loop yarn on the fancy twisting machine, the fancy loop yarn is treated by pulling, and the loop pulled by the decoration yarn forms a fiber bundle clamped by the core yarn and the fixed yarn, and the fancy pulled yarn is prepared; S5, setting: the pulled yarn is treated by steaming; When the cashmere sliver, trichloroacetic acid sliver and wool sliver are drawn, the first drawing, the second drawing and the third drawing are included; In the first drawing, 1 cashmere sliver, 1 trichloroacetic acid sliver, 2 wool slivers, 1 trichloroacetic acid sliver and 1 cashmere sliver are stacked in sequence, and then drawn on the drawing frame to form the first mixed sliver; In the second drawing, 1 cashmere sliver, 1 trichloroacetic acid sliver, 1 first mixed sliver, 1 wool sliver, 1 trichloroacetic acid sliver, 1 first mixed sliver, 1 wool sliver and 1 cashmere sliver are stacked in sequence, and then drawn on the drawing frame to form the second mixed sliver; In the third drawing, 2 cashmere slivers, 4 second mixed slivers and 2 cashmere slivers are stacked in sequence, and then drawn on the drawing frame to form the cashmere wool trichloroacetic acid mixed sliver.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the drawing process includes a sliver feeding device; The sliver feeding device includes a support, a first adjusting frame 3 and a second adjusting frame are arranged on the support, a hook is arranged on the first adjusting frame, and a pair of pressure rollers and a guide U-shaped groove are arranged on the second adjusting frame.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the first adjusting frame and the second adjusting frame are height-adjustable in the vertical direction.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: in the first drawing, the quantity is 18.6g / 5m, 6 draws are used, the back zone draft ratio is 1.62, and the bell mouth diameter is 3.0mm; In the second drawing, the weight is 18.4g / 5m, 8 drawing is adopted, and the back area draft ratio is 1.36; the trumpet diameter is 2.6mm; In the third drawing, the weight is 18.2g / 5m, 8 drawing is adopted, and the back area draft ratio is 1.24; the trumpet diameter is 2.4mm.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the back area draft ratio of the HY491 type roving machine is controlled at 1.48 times in the roving process, and the roving twist is 4.6 twists / 10cm.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the anti-fibrillation treatment of the lyocell fiber is further included before the lyocell yarn preparation. The anti-fibrillation treatment of the lyocell fiber refers to that the lyocell fiber is immersed in an anti-fibrillation treatment liquid with a pH value of 3-4, and the anti-fibrillation treatment liquid includes deionized water, sodium hypophosphite, a multi-active triazine crosslinking agent, a penetrant, a softener and a water-based polyurethane.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the wool and hair treatment of the cashmere is that a wool and hair treatment agent with a weight ratio of 10-15% is uniformly sprayed on the cashmere fiber, and is stacked for 20-24 hours; the wool and hair treatment agent includes deionized water, epoxy soybean oil, C16 / C18 fatty acid methyl ester complex, coconut oil diethanolamide, castor oil polyoxypropylene polyoxyethylene ether, 2-methyl-4-isothiazolin-3-one, dodecyl dimethyl amine oxide, Tween-80 and sorbitan monooleate.

[0014] The beneficial effects of the present application are that the cashmere and wool three-acetic lyocell fancy pulled wool yarn production process can reduce the cost and improve the moisture absorption of the pile part. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The present application relates to a production process flow chart; Figure 2 The present application relates to a production process flow chart; DETAILED DESCRIPTION

[0016] The present application will be further described below in combination with the drawings and specific examples.

[0017] The present application relates to a production process flow chart; Figure 1 The present application relates to a production process flow chart; Figure 2 The present application relates to a production process flow chart; The present application relates to a production process flow chart, which includes the following steps: S1, Preparation of core yarn: Merino wool is prepared into wool roving yarn as core yarn by using roving process. The wool used is selected from 70s-80s wool, and the length is 50-120mm; the wool is prepared into 30S wool roving yarn according to the roving process.

[0018] S2, Preparation of fixed yarn: Merino wool is prepared into wool spun yarn as fixed yarn by using spinning process. The lyocell fiber selected is cotton type, and the length is 38mm. The wool is prepared into 60S lyocell yarn according to the cotton spinning process.

[0019] Before the preparation of the lyocell yarn, it needs to be subjected to anti-fibrillation treatment. The anti-fibrillation treatment of the lyocell fiber refers to immersing the lyocell fiber in an anti-fibrillation treatment solution with a pH value of 3-4, which includes deionized water, sodium hypophosphite, a multi-active triazine crosslinking agent, a penetrant, a softener and water-based polyurethane. The water-based polyurethane used can form a protective film on the surface of the lyocell, thereby avoiding the fibrillation of the lyocell fiber during the carding process. The penetrant is specifically penetrant JFC-2. The softener is an organic silicon softener.

[0020] Specifically, the anti-fibrillation treatment solution includes 100 parts by mass of deionized water, 3-5 parts by mass of sodium hypophosphite, 5-10 parts by mass of a multi-active triazine crosslinking agent, 5-8 parts by mass of a penetrant, 3-5 parts by mass of a softener and 15-20 parts by mass of water-based polyurethane. In this embodiment, the anti-fibrillation treatment solution includes 100 parts by mass of deionized water, 5 parts by mass of sodium hypophosphite, 8 parts by mass of a multi-active triazine crosslinking agent, 6 parts by mass of a penetrant, 4 parts by mass of a softener and 17 parts by mass of water-based polyurethane.

[0021] S3, Preparation of decoration yarn: the cashmere is subjected to the processes of teaseling, beating and carding to prepare cashmere sliver; the tricellulose is prepared into tricellulose sliver, and the wool fiber is prepared into wool sliver.

[0022] The fineness of the cashmere is 15.8-16.7μm, and the length is 36-38mm; the cashmere fiber used is subjected to shrinkage resistance treatment. A teaseling treatment agent is sprayed when the cashmere is teaselled. Specifically, the teaseling treatment of the cashmere is that the teaseling treatment agent is uniformly sprayed on the cashmere fiber in a weight ratio of 10-15%, and is stacked for 20-24 hours; the teaseling treatment agent includes deionized water, epoxy soybean oil, C16 / C18 fatty acid methyl ester complex, coconut oil diethanolamide, castor oil polyoxypropylene polyoxyethylene ether, 2-methyl-4-isothiazolin-3-one, dodecyl dimethyl amine oxide, Tween-80 and sorbitol monooleate.

[0023] Further, the wool finishing agent includes 100 parts by mass of deionized water, 10-20 parts by mass of epoxidized soybean oil, 5-8 parts by mass of C16 / C18 fatty acid methyl ester complex, 3-5 parts by mass of coconut oil diethanolamide, 5-10 parts by mass of castor oil polyoxypropylene polyoxyethylene ether, 1-3 parts by mass of 2-methyl-4-isothiazolin-3-one, 3-5 parts by mass of dodecyl dimethyl amine oxide, 5-10 parts by mass of Tween-80, and 1-3 parts by mass of sorbitol monooleate. In the present embodiment, the wool finishing agent includes 100 parts by mass of deionized water, 15 parts by mass of epoxidized soybean oil, 6 parts by mass of C16 / C18 fatty acid methyl ester complex, 4 parts by mass of coconut oil diethanolamide, 8 parts by mass of castor oil polyoxypropylene polyoxyethylene ether, 2 parts by mass of 2-methyl-4-isothiazolin-3-one, 4 parts by mass of dodecyl dimethyl amine oxide, 7 parts by mass of Tween-80, and 2 parts by mass of sorbitol monooleate. The C16 / C18 fatty acid methyl ester complex is a mixture of C16 fatty acid methyl ester and C18 fatty acid methyl ester at a ratio of 1:1.

[0024] The selected wool has a fineness of 70s-80s and a length of 50-120 mm; the selected triacetate fiber is a short fiber with a fineness of 1.5-3D and 20-25 crimps per inch. The lyocell fiber has a fineness of 1.3 dtex and a dry strength of 3.72-4.40 dtex / cN.

[0025] The cashmere sliver, triacetate sliver, and wool sliver are then combined by a drawing frame to form a cashmere-wool-triacetate blended sliver, which is then subjected to a roving process to prepare a cashmere-wool-triacetate blended roving as a decorative yarn.

[0026] The cashmere sliver, triacetate sliver, and wool sliver are combined by a drawing frame in three passes, including a first pass, a second pass, and a third pass.

[0027] In the first pass, the slivers are stacked in the order of 1 cashmere sliver, 1 triacetate sliver, 2 wool slivers, 1 triacetate sliver, and 1 cashmere sliver, and then drawn by a drawing frame to form a first blended sliver. In the present embodiment, six slivers are combined, and the cashmere sliver is located at the outermost side, so that the cashmere fibers are located at the outer side of the first blended sliver.

[0028] In the second pass, the slivers are stacked in the order of 1 cashmere sliver, 1 triacetate sliver, 1 first blended sliver, 1 wool sliver, 1 triacetate sliver, 1 first blended sliver, 1 wool sliver, and 1 cashmere sliver, and then drawn by a drawing frame to form a second blended sliver. The cashmere-wool-triacetate ratio is ensured, and the cashmere fibers are located at the outer side as much as possible.

[0029] In the third drawing, according to the order of 2 cashmere slivers, 4 second mixed slivers, 2 cashmere slivers, the slivers are stacked and drawn by a drawing frame to form cashmere wool tric acid mixed slivers.

[0030] Further, in the drawing process, a sliver feeding device is included.

[0031] The sliver feeding device includes a support 1, a first adjusting frame 3 and a second adjusting frame 4 are arranged on the support 1, a hook 5 is arranged on the first adjusting frame 3, a pair of press rollers 6 and a guide U-shaped groove 7 are arranged on the second adjusting frame 4. A sliver can 2 is placed beside the support 1, and a sliver 8 is placed in the sliver can 2. The first adjusting frame 3 and the second adjusting frame 4 can be adjusted in height on the support 1, and a crossbar is arranged on the first adjusting frame 3, the hook 5 is fixed on the crossbar, the hook 5 has the function of hanging the sliver 8, and the position of the hook is higher than the upper edge of the sliver can 2, so that the sliver 8 has the effect of upward feeding. Upward feeding can avoid the phenomenon of sliver disorder and sticking caused by the friction between the upper sliver 8 and the lower sliver 8 when feeding on the platform, reduce the unevenness of drawing, and reduce the possible downtime.

[0032] The pair of press rollers 6 arranged on the second adjusting frame 4 can flatten the sliver 8 passing through them, and the U-shaped groove 7 arranged thereon can guide the sliver 8. In this embodiment, all the slivers are flattened and stacked before being sent to the roller of the drawing frame for drawing and drafting.

[0033] In the first drawing, the quantity is 18.6g / 5m, 6 slivers are used, and the back draft ratio is 1.62; the trumpet mouth diameter is 3.0mm.

[0034] In the second drawing, the quantity is 18.4g / 5m, 8 slivers are used, and the back draft ratio is 1.36; the trumpet mouth diameter is 2.6mm.

[0035] In the third drawing, the quantity is 18.2g / 5m, 8 slivers are used, and the back draft ratio is 1.24; the trumpet mouth diameter is 2.4mm.

[0036] In the roving process, the back draft ratio of the HY491 type roving machine is controlled at 1.48 times, and the roving twist is 4.6 twists / 10cm. The roving quantity is 4.5 grams per 5 meters. The prepared roving is analyzed, and the outer surface of the roving is cashmere fiber, and the inner core position of the roving is the mixture of cashmere, tric acid and lyocell.

[0037] S4, preparation of the pulled yarn: the core yarn, the fixed yarn and the cashmere top are prepared into fancy loop yarn on a fancy twisting machine. The inner twist is 800 twists per meter, the twist direction is "Z", the outer twist is 530 twists per meter, the twist direction is "S", the overfeed ratio is 2.5, the loop cashmere yarn has a core line stretch of 10.5%, and the number of loops in the loop cashmere yarn is 40 per 20 centimeters.

[0038] The fancy loop yarn is subjected to pulling treatment on a cone yarn pulling machine, and the loops formed by the decorative yarn are pulled to form fiber bundles clamped by the core yarn and the fixed yarn, thereby preparing the fancy pulled yarn.

[0039] S5, setting: the pulled yarn is subjected to steaming treatment; the pulled sweater is placed into a steaming box, vacuum is first drawn, then the steaming box is heated to 85 DEG C, the steaming box is kept at 85 DEG C for 5 minutes, and the steaming box is kept dry during steaming; the pulled yarn is taken out and then placed into the steaming box and heated to 80 DEG C for wet steaming, and water is added into the steaming box. The temperature is kept at 80 DEG C for 20 minutes, and then the temperature is lowered after the pulled yarn is taken out. The setting effect of the pulled yarn can be improved. After setting, the yarn is wound into a cone.

[0040] The above describes the preferred embodiments of the present application in detail. It should be understood that those skilled in the art can make many modifications and variations without creative effort based on the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the prior art according to the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A process for producing wool and cashmere triacetate lyocell fancy brushed yarn, characterized in that, Includes the following steps: S1. Preparation of core yarn: Merino wool is prepared into wool coarse yarn using a coarse spinning process to serve as core yarn. S2. Preparation of fixed yarn: Lyocell yarn prepared by the cotton spinning production process is used as fixed yarn. S3. Preparation of decorative yarn: Cashmere is processed through wool-making, beating, and combing processes to prepare cashmere slivers; triacetate fibers are made into triacetate slivers, and wool fibers are made into wool slivers; The cashmere sliver, triacetate sliver, and wool sliver are then drawn together using a drawing frame to form a cashmere-wool-triacetate blended sliver. This sliver is then processed through a roving process to prepare a cashmere-wool-triacetate blended roving as a decorative yarn. S4. Preparation of napped yarn: The core yarn, fixed yarn and cashmere sliver are prepared into fancy boucle yarn on a fancy twisting machine. The fancy boucle yarn is napped to form a fiber bundle held by the core yarn and fixed yarn. S5. Setting: Steam the raised yarn. When cashmere slivers, triacetate slivers, and wool slivers are drawn together, the process includes the first drawing, the second drawing, and the third drawing. In the first drawing process, after stacking 1 cashmere sliver, 1 triacetate sliver, 2 wool slivers, 1 triacetate sliver, and 1 cashmere sliver, a drawing frame is used to draw and form the first mixed sliver. In the second drawing process, after stacking in the following order, one cashmere sliver, one triacetate sliver, one first mixed sliver, one wool sliver, one triacetate sliver, one first mixed sliver, one wool sliver, and one cashmere sliver, the sliver is drawn using a drawing frame to form the second mixed sliver. In the third drawing process, after stacking 2 cashmere slivers, 4 second blended slivers, and 2 cashmere slivers in the order of 2, 4, and 2 cashmere slivers, a drawing frame is used to draw and form a cashmere and wool triacetate blended sliver.

2. The production process of wool and cashmere triacetate lyocell fancy brushed yarn according to claim 1, characterized in that, The drawing process includes a sliver feeding device; The wool sliver feeding device includes a bracket (1), on which a first adjusting frame (3) and a second adjusting frame (4) are provided. The first adjusting frame (3) is provided with a hook (5); the second adjusting frame (4) is provided with a pair of pressure rollers (6) and a guide U-shaped groove (7).

3. The production process of wool and cashmere triacetate lyocell fancy brushed yarn according to claim 2, characterized in that, The first adjustment frame (3) and the second adjustment frame (4) are adjustable in height in the vertical direction.

4. The production process of wool and cashmere triacetate lyocell fancy brushed yarn according to claim 1, characterized in that, During the first drawing process, the basis weight was 18.6 g / 5 m, with 6 strands drawn together, and the back zone draw ratio was 1.62; the bell mouth diameter was 3.0 mm. During the second drawing process, the basis weight was 18.4 g / 5 m, with 8 strands drawn together, and the back zone draw ratio was 1.36; the bell mouth diameter was 2.6 mm. During the third sizing process, the basis weight was 18.2 g / 5 m, with 8 sizings combined and a back zone draw ratio of 1.24; the bell mouth diameter was 2.4 mm.

5. The production process of wool and cashmere triacetate lyocell fancy brushed yarn according to claim 1, characterized in that, In the roving process, the back zone draft ratio of the HY491 roving frame is controlled at 1.48 times, and the roving twist is 4.6 twists / 10cm.

6. The production process of wool and cashmere triacetate lyocell fancy brushed yarn according to claim 1, characterized in that, Lyocell yarn preparation also includes Lyocell fiber antigen fibrillation treatment; Antigen fiber treatment of lyocell fibers refers to impregnating lyocell fibers with an antigen fiber treatment solution with a pH of 3-4. The antigen fiber treatment solution includes deionized water, sodium hypophosphite, multi-active triazine crosslinking agent, penetrant and softener, and waterborne polyurethane.

7. The production process of wool and cashmere triacetate lyocell fancy brushed yarn according to claim 1, characterized in that, The wool finishing process for cashmere involves uniformly spraying a wool finishing agent at a weight ratio of 10-15% onto the cashmere fibers and then leaving them to stand for 20-24 hours. The wool finishing agent includes deionized water, epoxidized soybean oil, C16 / C18 fatty acid methyl ester complex, coconut oil diethanolamide, castor oil polyoxypropylene polyoxyethylene ether, 2-methyl-4-isothiazolin-3-one, dodecyl dimethylamine oxide, Tween-80, and sorbitan monooleate.

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