Cashmere triacetate tencel nylon core-spun yarn production process

Abstract

The invention discloses a production process of cashmere triacetate tencel nylon core-spun yarn. The core-spun yarn comprises core yarn and a covering fiber layer, the production process comprises the steps of raw material selection and raw material pretreatment; preparing a coating fiber layer; preparing a core yarn; preparing a covering yarn; drafting cashmere, triacetic acid, cashmere, triacetic acid and cashmere to form a first mixed wool top in the first drawing process; drafting cashmere, triacetic acid, the first mixed wool top, the first mixed wool top, triacetic acid and cashmere to form a second mixed wool top; according to third drawing, the cashmere, the second mixed wool tops and the cashmere are drafted to form cashmere triacetate tencel mixed strips. Through a proper drawing process, the outer side surface of the covering yarn is basically completely made of cashmere fibers, the prepared fabric shows the soft hand feeling and the skin-friendly effect of cashmere, tencel and triacetate fibers in the fabric have the good moisture absorption effect, the yarn cost can be reduced, and the fabric has the good moisture absorption effect. The nylon filaments can improve the strength of the covering yarn.

Description

TECHNICAL FIELD

[0001] The present application relates to a cashmere triacetate Tencel nylon core-spun yarn production process, and belongs to the technical field of core-spun yarn production. BACKGROUND

[0002] Cashmere fiber is a rare special animal fiber, not only the yield is rare (only accounts for 0.2% of the total output of animal fibers in the world), and the quality is excellent, the transaction is by gram, is considered by people as "fiber gem", "fiber queen", is all the textile raw materials that can be used by human beings at present and cannot be compared. Cashmere products have delicate appearance, soft and smooth hand feeling, light and comfortable wearing, good warmth retention, but the length of the pile is limited, the elasticity of the finished product is poor; the height of the pile, the smoothness of the hand feeling is affected by the washing process, it is difficult to keep the style consistent, and the elasticity is poor.

[0003] The raw material of triacetate fiber is natural wood pulp, and the characteristics are soft hand feeling, good drape, not easy to wrinkle, good thermoplasticity, which can make the fabric clothes keep the design style. And the luster is similar to that of silk, the hand feeling is soft and smooth and has elasticity. Cashmere fiber is a kind of excellent textile raw material, the prepared fabric has the characteristics of softness, silkiness and other characteristics under the premise of warmth retention.

[0004] Tencel is the trade name of Lyocell fiber of Lenzing Joint Stock Company, which is a kind of pure natural regenerated fiber produced by solvent spinning method with conifer wood pulp as raw material. It is very similar to pure cotton, has the characteristics of skin affinity, smooth touch, better air permeability, bright and stable color, has the properties of moisture absorption, air permeability, strength and the like.

[0005] When cashmere fiber is used to prepare yarn, the cost problem needs to be considered, in order to make the surface of the prepared yarn present the characteristics of cashmere fiber, and reflect the moisture absorption of Tencel and triacetate fiber, the whole production process needs to be considered. How to design a cashmere triacetate Tencel nylon core-spun yarn production process, which can make the surface of the yarn present cashmere fiber, becomes a problem to be solved. SUMMARY

[0006] The purpose of the present application is to provide a cashmere triacetate Tencel nylon core-spun yarn production process, which can improve the arrangement of fiber strip and equipment during drawing, so that the surface of the core-spun yarn presents cashmere fiber, thereby achieving the effect of reducing cost.

[0007] To solve the above technical problems, the purpose of the present application is achieved as follows: The present application relates to a cashmere triacetate Tencel nylon core-spun yarn production process, and the core-spun yarn comprises a core yarn and a cladding fiber layer cladded on the outer side of the core yarn; the core yarn comprises a nylon filament and a Tencel yarn which are parallel twisted, and the cladding fiber layer is a cashmere triacetate mixed fiber layer. The production process comprises the following steps: S1, selection of raw materials: selecting nylon filament, Tencel fiber, triacetate fiber and cashmere fiber; the fineness of the cashmere is 15.8-16.7 μm, and the length is 36-38 mm; the triacetate fiber is a short fiber with a fineness of 1.5-3D and 20-25 crimps per inch; the Tencel fiber has a fineness of 1.3-2.5 dtex and a length of 38-51 mm; S2, pretreatment of raw materials: including wooling of cashmere and pre-wetting of triacetate fiber; S3, preparation of the wrapped fiber layer: preparing cashmere sliver and triacetate sliver from cashmere and triacetate fiber respectively, then preparing cashmere triacetate blended sliver through the drawing process, and then preparing cashmere triacetate blended roving through the roving process; S4, preparation of core yarn: twisting Tencel yarn and nylon filament together; S5, preparation of core-spun yarn: preparing cashmere triacetate Tencel nylon core-spun yarn using a ring spinning frame with a core yarn feeding device; In the drawing process, it includes first drawing, second drawing and third drawing; In the first drawing, one cashmere sliver, two triacetate slivers, one cashmere sliver, two triacetate slivers and one cashmere sliver are stacked in sequence, and then drawn by a drawing frame to form a first blended sliver; In the second drawing, one cashmere sliver, one triacetate sliver, one first blended sliver, one first blended sliver, one triacetate sliver and one cashmere sliver are stacked in sequence, and then drawn by a drawing frame to form a second blended sliver; In the third drawing, one cashmere sliver, four second blended slivers and one cashmere sliver are stacked in sequence, and then drawn by a drawing frame to form a cashmere triacetate Tencel blended sliver.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: in the drawing process, a sliver feeding device is included; The sliver feeding device comprises 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, and a pair of pressure rollers 6 and a guide U-shaped groove 7 are arranged on the second adjusting frame 4.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the first adjusting frame 3 and the second adjusting frame 4 are height-adjustable in the vertical direction.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the wool top treatment is to uniformly spray the wool top treatment agent in a proportion of 10-15% by weight on the cashmere fibers, and stack for 20-24 hours; The wool top treatment agent comprises 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.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the draft ratio control of the HY491 type roving machine in the roving process is 1.48 times, 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 core yarn tension control is 0.5cN / tex during the preparation of the core-spun yarn.

[0013] The beneficial effects of the present application are: the production process of the cashmere three-acetic acid Tencel nylon core-spun yarn relates to a suitable drawing process, so that the outer surface of the core-spun yarn is basically all cashmere fibers, so that the prepared fabric also shows the soft hand feeling and skin effect of cashmere, and the Tencel and three-acetic acid fibers inside have good moisture absorption effect, and the cost of yarn can be reduced, and the setting of nylon filament can improve the strength of the core-spun yarn. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the production process flow chart involved in the present application; Figure 2 is a structure schematic view of the top feeding device used in the drawing process of the present application. DETAILED DESCRIPTION

[0015] The present application will be further described below in combination with the drawings and specific embodiments.

[0016] In combination Figure 1 and Figure 2 , the present embodiment will be described in detail. The production process of the cashmere three-acetic acid Tencel nylon core-spun yarn relates to a production process of a cashmere three-acetic acid Tencel nylon core-spun yarn, which comprises a core yarn and a coating fiber layer coated on the outside of the core yarn; The core yarn comprises a nylon filament and a Tencel yarn, and the coating fiber layer is a cashmere three-acetic acid mixed fiber layer.

[0017] The production process comprises the following steps: S1, raw material selection: nylon filament, Tencel fiber, triacetate fiber and cashmere fiber; the fineness of the cashmere is 15.8-16.7 μm, the length is 36-38 mm; the triacetate fiber is short fiber, the fineness is 1.5-3D, and has 20-25 crimps per inch; the Tencel fiber has a fineness of 1.3-2.5 dtex and a length of 38-51 mm; the nylon filament is a 75D / 72F nylon 6 filament.

[0018] S2, raw material pretreatment: including wooling treatment of cashmere and pre-humidification treatment of triacetate fiber.

[0019] The wooling treatment of cashmere is to uniformly spray a wooling agent in a weight ratio of 10-15% on the cashmere fiber, and stack for 20-24 hours; the wooling 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.

[0020] Further, the wooling agent includes 100 parts by mass of deionized water, 10-20 parts by mass of epoxy 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 this embodiment, the wooling agent includes 100 parts by mass of deionized water, 15 parts by mass of epoxy 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.

[0021] The pre-humidification treatment of triacetate fiber is to adjust the moisture regain of triacetate fiber to about 11%, and at the same time, the moisture regain of Tencel fiber is also adjusted to about 11%.

[0022] S3, preparation of the coated fiber layer: the cashmere and triacetate fiber are respectively prepared into cashmere sliver and triacetate sliver, and then the cashmere sliver and triacetate sliver are subjected to a drawing process to prepare a cashmere triacetate mixed sliver, and then subjected to a roving process to prepare a cashmere triacetate blended roving.

[0023] In the drawing process, including the first drawing, the second drawing and the third drawing.

[0024] In the first drawing, according to 1 cashmere sliver, 2 triacetate sliver, 1 cashmere sliver, 2 triacetate sliver, 1 cashmere sliver, the slivers are stacked and then drawn by drawing frame to form the first mixed sliver.

[0025] In the second drawing, according to 1 cashmere sliver, 1 triacetate sliver, 1 first mixed sliver, 1 first mixed sliver, 1 triacetate sliver and 1 cashmere sliver, the slivers are stacked and then drawn by drawing frame to form the second mixed sliver.

[0026] In the third drawing, according to 1 cashmere sliver, 4 second mixed slivers, 1 cashmere sliver, the slivers are stacked and then drawn by drawing frame to form the cashmere triacetate tencel mixed sliver.

[0027] Further, in the drawing process, the sliver feeding device is included.

[0028] 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 compression 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 cross bar is arranged on the first adjusting frame 3, the hook 5 is fixed on the cross bar, 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.

[0029] The pair of compression rollers 6 arranged on the second adjusting frame 4 can flatten the sliver 8 passing through them, and the U-shaped groove 7 is arranged to 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.

[0030] In the first drawing, the quantity is 18.5g / 5m, 7 draws are used, and the back zone draw ratio is 1.58; the trumpet mouth diameter is 3.0mm.

[0031] In the second drawing, the quantity is 18.2g / 5m, 6 draws are used, and the back zone draw ratio is 1.34; the trumpet mouth diameter is 2.6mm.

[0032] In the third drawing, the quantity is 18.2g / 5m, 6 draws are used, and the back zone draw ratio is 1.24; the trumpet mouth diameter is 2.4mm.

[0033] The HY491 roving frame is used in the roving process, the back draft ratio is controlled at 1.48, the roving twist is 4.6 twist / 10 cm, and the roving weight is 4.5 g per 5 m.

[0034] S4, preparation of the core yarn: the Tencel yarn and the nylon filament are parallel twisted, and the fineness of the Tencel yarn is 60.

[0035] S5, preparation of the core-spun yarn: the cashmere three-acetic acid Tencel nylon core-spun yarn is prepared by using the ring spinning frame with the core yarn feeding device; in the preparation of the core-spun yarn, the tension of the core yarn is controlled at 0.5 cN / tex.

[0036] The prepared core-spun yarn is analyzed, and the outside of the core-spun yarn is cashmere fiber.

[0037] The above detailed the preferred embodiments of the present application. It should be understood that those of ordinary skill in the art can make many modifications and variations without creative work 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 cashmere triacetate tencel nylon core spun yarn, characterized by, The core yarn comprises a core yarn and a covering fiber layer covering the outside of the core yarn; the core yarn comprises core-spun nylon filaments and Tencel yarns, and the covering fiber layer is a cashmere tri-acetic acid mixed fiber layer; The production process comprises the following steps: S1, selection of raw materials: selecting nylon filaments, Tencel fibers, tri-acetic acid fibers and cashmere fibers; the cashmere has a fineness of 15.8-16.7 μm and a length of 36-38 mm; the tri-acetic acid fibers are short fibers with a fineness of 1.5-3D and 20-25 crimps per inch; the Tencel fibers have a fineness of 1.3-2.5 dtex and a length of 38-51 mm; S2, pretreatment of raw materials: including wool combing of cashmere and pre-humidification of tri-acetic acid fibers; S3, preparation of the covering fiber layer: preparing cashmere slivers and tri-acetic acid slivers from cashmere and tri-acetic acid fibers respectively, then preparing a cashmere tri-acetic acid mixed sliver through a drawing process from the cashmere slivers and the tri-acetic acid slivers, and then preparing a cashmere tri-acetic acid blended roving through a roving process; S4, preparation of the core yarn: core-spun Tencel yarns and nylon filaments; S5, preparation of the core yarn: preparing a cashmere tri-acetic acid Tencel nylon core yarn using a ring spinning frame with a core yarn feeding device; In the drawing process, the first drawing, the second drawing and the third drawing are included; In the first drawing, one cashmere sliver, two tri-acetic acid slivers, one cashmere sliver, two tri-acetic acid slivers and one cashmere sliver are stacked in sequence, and then a first mixed sliver is formed through drawing using a drawing frame; In the second drawing, one cashmere sliver, one tri-acetic acid sliver, one first mixed sliver, one first mixed sliver, one tri-acetic acid sliver and one cashmere sliver are stacked in sequence, and then a second mixed sliver is formed through drawing using a drawing frame; In the third drawing, one cashmere sliver, four second mixed slivers and one cashmere sliver are stacked in sequence, and then a cashmere tri-acetic acid Tencel mixed sliver is formed through drawing using a drawing frame.

2. A cashmere triacetate Tencel nylon core yarn production process as claimed in claim 1 wherein, In the drawing process, a sliver feeding device is included; The sliver feeding device comprises 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), and a pair of press rollers (6) and a guide U-shaped groove (7) are arranged on the second adjusting frame (4).

3. A process for producing cashmere triacetate Tencel nylon core yarn as claimed in claim 2, wherein, The first adjusting frame (3) and the second adjusting frame (4) are height-adjustable in the vertical direction.

4. A process for producing cashmere triacetate Tencel nylon core yarn as claimed in claim 1, wherein, The wool combing of cashmere is that a weight proportion of 10-15% of a wool combing agent is uniformly sprayed on cashmere fibers, and then the cashmere fibers are stacked for 20-24 hours; the wool combing agent comprises 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.

5. A process for producing cashmere triacetate Tencel nylon core yarn as claimed in claim 1, wherein, In the roving process, the back zone draft ratio of a HY491 type roving frame is controlled at 1.48 times, and the roving twist is 4.6 twists per 10 cm.

6. A process for producing cashmere triacetate Tencel nylon core yarn as claimed in claim 1, wherein, In the preparation of the core-spun yarn, the tension of the core yarn is controlled at 0.5 cN / tex.

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