Woolen spinning production process of cashmere protein fiber blended yarn

Abstract

The invention discloses a woolen spinning production process for cashmere and protein fiber blended yarn. The woolen spinning production process comprises the steps of raw material selection, wherein cashmere fibers and protein fibers are selected; the raw material pretreatment comprises wool mixing treatment of cashmere fibers and pretreatment of protein fibers; the pretreatment agent is prepared from deionized water, a penetrating agent, an antistatic agent, a silicon-based softening agent, cocamidopropyl hydroxysulfobetaine and waterborne polyurethane; in the opening picking process, two times of cotton cleaning are adopted; a carding process: carding the mixed fiber cotton rolls by adopting a carding machine to prepare mixed fiber strips; and a spinning process: spinning by using a mule spinning device. According to the woolen spinning production process for the cashmere and protein fiber blended yarn, the problems of damage to protein fibers, uneven mixing and the like during cashmere and protein fiber blending can be solved through wool mixing treatment of the cashmere fibers and pretreatment of the protein proportion, the yarn quality and the production efficiency are improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a cashmere protein fiber blended yarn spinning production process, belongs to the protein fiber spinning production technical field. BACKGROUND

[0002] Cashmere fiber belongs to natural protein fiber, which is a thin layer of fine cashmere grown in the outer skin layer of goats, covered at the root of the goat hair, the fiber is fine and three-dimensional crimp, the fiber is relatively fluffy, easy to form air layer, has very strong warmth, is a rare special animal fiber, not only the yield is rare, more importantly, its excellent quality and characteristics, known as the "Queen of Fiber". However, due to the short cashmere fiber, the spinning difficulty is relatively large, and the cost of pure cashmere yarn is high, which limits its wide application.

[0003] The regenerated collagen fiber is a regenerated protein fiber produced by Zhonghua Chemical Factory, which is an animal protein regenerated fiber, which is made of collagen extract spinning in two layers of cowhide. The moisture regain of regenerated collagen fiber is as high as 22.1%, has good moisture retention, rich in 17 kinds of amino acids, close to human body, and is comfortable to skin. Adding 30% of regenerated collagen fiber in the yarn has obvious deodorizing effect on ammonia, acetic acid, isovaleric acid and other odors; the blended product with 50% of regenerated collagen fiber can pass the AAA level certification of antibacterial, and has significant antibacterial effect on common bacteria such as staphylococcus aureus and escherichia coli. Good biocompatibility, low antigenicity, and can achieve self-extinguishing away from fire, LOI reaches 36, has flame retardant effect. Because the regenerated collagen used is biodegradable. The regenerated collagen fiber has low elastic modulus and strength, and high elongation at break, the fiber breaking strength is 1.5 cN / dtex, and the elongation at break is 25%, so fiber damage is easy to occur in the processing process, thus forming neps, affecting the yarn index. And the moisture regain of the fiber is large. Under the standard temperature and humidity conditions, the moisture content of the regenerated collagen fiber is about 22%, which is 2.5 times of cotton fiber and 2 times of viscose fiber. The high moisture regain brings great difficulty to the production process, and the problems such as sticking of the thickening process, rubber roller and other problems are easy to occur, which affects the yield and quality. The fiber shrinkage is large. The regenerated collagen fiber will shrink greatly at about 65 DEG C, and the temperature of the grabbing and beating part needs to be strictly controlled in the production process to avoid overheating and shrinkage of the regenerated collagen fiber.

[0004] How to design a cashmere protein fiber blended yarn spinning production process becomes a problem to be solved. SUMMARY

[0005] The present application aims to provide a cashmere protein fiber blended yarn spinning production process, which improves the problem of poor cohesion of cashmere and protein fiber through pretreatment of raw materials, and reduces the cost of yarn.

[0006] In order to solve the above-mentioned technical problems, the purpose of the present invention is achieved as follows: The present invention relates to a cashmere protein fiber blended yarn spun production process, comprising the following steps: S1. Raw material selection: cashmere fiber and protein fiber are selected; the cashmere fiber has a fineness of 14-16 microns and a length of 35-40 mm; the protein fiber is regenerated collagen fiber; S2. Raw material pretreatment: including cashmere fiber and wool processing and protein fiber pretreatment; The wool treatment of cashmere is to evenly spray a wool treatment agent at a weight ratio of 10-15% on the cashmere fibers and pile them for 20-24 hours; the wool treatment 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-isothiazoline-3-one, dodecyl dimethylamine oxide, Tween-80 and sorbitan monooleate; The pretreatment of the protein fiber comprises spraying a pretreatment agent at a weight ratio of 10-15% on the protein fiber and placing the pretreatment agent in an environment of 26-28° C. and 50-55% RH for 22-24 hours; the pretreatment agent comprises deionized water, a penetrant, an antistatic agent, a silicone-based softener, cocamidopropyl hydroxysulfobetaine, and water-based polyurethane; S3, Blowing Process: The pre-treated cashmere fiber and protein fiber are blown for the first time according to the blending ratio, and then packaged into mixed fiber bales. The mixed fiber bales are then blown for the second time. The mixed fiber after the second blown is fed into a cotton feeder through a condenser and evenly transported to a single-beater lap forming machine to form a mixed fiber lap. S4, combing process: The mixed fiber laps are combed with a combing machine to form mixed fiber strips; a combing machine with 30 combing points is selected, and No. 33 card clothing is used for the initial combing, and No. 34 card clothing, the highest number for woolen spinning, is used for the final combing; the distance between the front doffer and the front cylinder is set to 10-12 wires, and the distances between the front cylinder and the five working rollers are 12, 12, 10, 8, and 8 wires respectively; S5. Spinning process: Spinning is performed using a mule spinning device.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the pretreatment agent includes 100 parts by mass of deionized water, 5-10 parts by mass of a penetrant, 10-15 parts by mass of an antistatic agent, 3-5 parts by mass of a silicone-based softener, 3-5 parts by mass of cocamidopropyl hydroxysulfobetaine and 5-10 parts by mass of an aqueous polyurethane.

[0008] As a preferred scheme of the above scheme and on the basis of the above scheme: the blending agent comprises 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, 2-4 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.

[0009] As a preferred scheme of the above scheme and on the basis of the above scheme: the mule spinning includes two processes of drafting and twisting, in the drafting, the total length of the delivery is 1800-1900mm, the slub length is 1400-1500mm, the slub drafting multiple is 1.2-1.25, and the additional drafting multiple is 1.15-1.2; in the twisting, the spindle speed during the slub twisting is 1400-1450r / min, and the time is 5-5.5s; the spindle speed during the drafting and twisting is 600-620r / min, and the time is 1.5-1.7s; the spindle speed during the additional twisting is 3600-3700r / min, and the time is 5.5-6s.

[0010] As a preferred scheme of the above scheme and on the basis of the above scheme: further comprising a bobbin winding process; the working state of the bobbin electronic clearer is set as: neps 250%, slubs 130%*1.3cm, long slubs 135%*30cm, fine parts 35%*25cm, and winding speed 400-420m / min.

[0011] The application has the advantages that the rough spinning production process of cashmere protein fiber blended yarn can reduce the damage to protein fibers and uneven mixing during the blending of cashmere protein fibers, improve the quality and production efficiency of yarn, and reduce the production cost. DETAILED DESCRIPTION

[0012] The application will be further described below in combination with specific examples.

[0013] Example 1 The rough spinning production process of cashmere protein fiber blended yarn related to the present application comprises the following steps: S1, raw material selection: selecting cashmere fibers and protein fibers; the fineness of the cashmere fibers is 16 microns, and the length is 40mm; the protein fibers are regenerated collagen fibers with a fiber specification of 2.22dtex*38mm.

[0014] S2, raw material pretreatment: including cashmere fiber blending and protein fiber pretreatment.

[0015] The wool and hair treatment is to evenly spray the wool and hair treatment agent in a proportion of 15% by weight on the cashmere fibers, and stack for 20 hours, so that the wool and hair treatment agent can penetrate into the cashmere fibers; the wool and hair 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.

[0016] Further, the wool and hair treatment agent comprises 100 parts by mass of deionized water, 20 parts by mass of epoxy soybean oil, 5 parts by mass of C16 / C18 fatty acid methyl ester complex, 5 parts by mass of coconut oil diethanolamide, 5 parts by mass of castor oil polyoxypropylene polyoxyethylene ether, 4 parts by mass of 2-methyl-4-isothiazolin-3-one, 3 parts by mass of dodecyl dimethyl amine oxide, 10 parts by mass of Tween-80 and 1 part by mass of sorbitan monooleate. The C16 / C18 fatty acid methyl ester complex is a mixture of C16 fatty acid methyl ester and C18 fatty acid methyl ester in a ratio of 1:1.

[0017] The pretreatment of protein fibers refers to spraying a pretreatment agent in a proportion of 15% by weight on the protein fibers, and placing them in an environment of 26-28°C and 50-55% r.h. for 22h; the pretreatment agent comprises deionized water, penetrant, antistatic agent, silicon-based softener, cocamidopropyl hydroxysultaine and water-based polyurethane, which can improve the strength of the protein fibers by 15.7% after testing. The penetrant is penetrant JFC2. The antistatic agent is wool antistatic agent RC-931.

[0018] Further, the pretreatment agent comprises 100 parts by mass of deionized water, 10 parts by mass of penetrant, 10 parts by mass of antistatic agent, 5 parts by mass of silicon-based softener, 3 parts by mass of cocamidopropyl hydroxysultaine and 10 parts by mass of water-based polyurethane.

[0019] S3, the opening and cleaning process: the pretreated cashmere fibers and protein fibers are first cleaned according to the blending ratio, packaged into a mixed fiber package, and then the mixed fiber package is secondly cleaned; the mixed fibers after the second cleaning are fed into the cotton feeding machine through the condenser, uniformly transported into the single beater lap former, and formed into a mixed fiber lap. In this embodiment, the cashmere fibers and protein fibers are mixed in a ratio of 50:50. The double cleaning can increase the mixing effect of the cashmere fibers and protein fibers.

[0020] S4, carding process: using carding machine to card the mixed fiber lap, and making mixed fiber sliver; selecting carding machine with 30 carding points, selecting 33 gauge for primary carding, and selecting coarse spinning highest gauge 34 gauge for final carding; setting the front doffer to front roller gauge to 10 filaments, and setting the interval between the front roller and the five work rollers to 12, 12, 10, 8, and 8 filaments respectively. By reasonably setting the carding machine parameters, the fiber carding is more sufficient, and the parallel straightness and mixing uniformity of the fiber are improved.

[0021] S5, spinning process: using the walking spindle spinning equipment to spin. The walking spindle spinning includes two processes of drafting and twisting. In the drafting process, the total length of the delivery is 1800mm, the sliver length is 1500mm, the sliver drafting multiple is 1.2, and the additional drafting multiple is 1.2. In the twisting process, the spindle speed is 1400r / min when twisting the sliver, the time is 5.5s; the spindle speed is 600r / min when drafting and twisting, the time is 1.7s; the spindle speed is 3600r / min when adding twist, the time is 6s. The fineness of the prepared coarse spinning yarn is 40, and the fineness and strength of the yarn are ensured by accurately controlling the drafting and twisting parameters. The single yarn breaking strength reaches 3.5cN / dtex, the yarn evenness is 12.5%, and the hairiness index is 3.0, which meets the industry standards.

[0022] Further, the production process also includes a bobbin winding process; the working state of the bobbin electronic clearer is set as: neps 250%, short thick 130% x 1.3cm, long thick 135% x 30cm, thin 35% x 25cm, and winding speed 400-420m / min.

[0023] Example two The cashmere protein fiber blended yarn coarse spinning production process of the present embodiment includes the following steps: S1, raw material selection: selecting cashmere fiber and protein fiber; the fineness of the cashmere fiber is 14 microns, and the length is 35mm; the protein fiber is regenerated collagen protein fiber, and the fiber specification is 2.22dtex x 38mm.

[0024] S2, raw material pretreatment: including wool combing treatment of cashmere fiber and pretreatment of protein fiber.

[0025] The wool combing treatment of cashmere is to uniformly spray the wool combing treatment agent in a weight ratio of 10% on the cashmere fiber, and to stack for 24 hours, so that the wool combing treatment agent can penetrate into the cashmere fiber; the wool combing 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.

[0026] Further, the scouring agent comprises 100 parts by mass of deionized water, 10 parts by mass of epoxy soybean oil, 8 parts by mass of C16 / C18 fatty acid methyl ester complex, 3 parts by mass of coconut oil diethanolamide, 10 parts by mass of castor oil polyoxypropylene polyoxyethylene ether, 2 parts by mass of 2-methyl-4-isothiazolin-3-one, 5 parts by mass of dodecyl dimethyl amine oxide, 5 parts by mass of Tween-80, and 3 parts by mass of sorbitol monooleate.

[0027] The pretreatment of the protein fiber refers to spraying a pretreatment agent in a proportion of 10% by weight on the protein fiber, and placing the protein fiber in an environment of 26-28°C and 65-70% r.h. for 24 hours; the pretreatment agent comprises deionized water, a penetrating agent, an antistatic agent, a silicon-based softening agent, cocamide propyl hydroxyl sulfobetaine, and aqueous polyurethane, which can improve the strength of the protein fiber, and the strength is improved by 17.6% after testing.

[0028] Further, the pretreatment agent comprises 100 parts by mass of deionized water, 5 parts by mass of a penetrating agent, 15 parts by mass of an antistatic agent, 3 parts by mass of a silicon-based softening agent, 5 parts by mass of cocamide propyl hydroxyl sulfobetaine, and 5 parts by mass of aqueous polyurethane.

[0029] S3, an opening and cleaning process: the pretreated cashmere fiber and the protein fiber are first cleaned according to the blending ratio, packaged to form a mixed fiber package, and the mixed fiber package is secondly cleaned; the mixed fiber after the second cleaning is fed into a cotton feeding machine through a condenser, uniformly transported into a single beater lap former, and a mixed fiber lap is formed. In this embodiment, the cashmere fiber and the protein fiber are mixed in a ratio of 70:30. The second cleaning can increase the mixing effect of the cashmere fiber and the protein fiber.

[0030] S4, a carding process: the mixed fiber lap is carded by a carding machine to form a mixed fiber sliver; a carding machine with 30 carding points is selected, 33 gauge is selected for the first carding, and 34 gauge, which is the highest gauge for spinning, is selected for the last carding; the gauge between the front doffer and the front cylinder is set to 12 filaments, and the distances between the front cylinder and the five work rollers are 12, 12, 10, 8, and 8 filaments, respectively. By reasonably setting the parameters of the carding machine, the carding of the fiber is more sufficient, and the parallel straightness and the mixing uniformity of the fiber are improved.

[0031] S5, spinning process: using a mule spinning equipment to spin. The mule spinning includes two processes of drafting and twisting, in the drafting, the total length of the delivery is 1900mm, the sliver length is 1400mm, the sliver drafting multiple is 1.25, the additional drafting multiple is 1.15; in the twisting, the spindle speed of the sliver twisting is 1450r / min, the time is 5s; the spindle speed of the drafting and twisting is 620r / min, the time is 1.5s; the spindle speed of the additional twisting is 3700r / min, the time is 5.5s. The prepared roving yarn has a fineness of 40, by precisely controlling the drafting and twisting parameters, the fineness and strength of the yarn are ensured. The single yarn breaking strength reaches 3.2cN / dtex, the slub unevenness is 10.5%, the hairiness index is 2.8, and all indexes meet the industry standards.

[0032] Further, the production process further includes a bobbin winding process; the working state of the electronic clearer of the bobbin winding is set as: neps 250%, short slubs 130%*1.3cm, long slubs 135%*30cm, thin parts 35%*25cm, and winding speed 400-420m / min.

[0033] The above describes the preferred embodiments of the application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the application should be within the protection scope determined by the claims.

Claims

1. A cashmere protein fiber blended yarn spun production process, characterized in that: The steps include: S1. Raw material selection: cashmere fiber and protein fiber are selected; the cashmere fiber has a fineness of 14-16 microns and a length of 35-40 mm; the protein fiber is regenerated collagen fiber; S2. Raw material pretreatment: including cashmere fiber and wool processing and protein fiber pretreatment; The wool treatment of cashmere is to evenly spray a wool treatment agent at a weight ratio of 10-15% on the cashmere fibers and pile them for 20-24 hours; the wool 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-isothiazoline-3-one, dodecyl dimethylamine oxide, Tween-80 and sorbitan monooleate; The pretreatment of the protein fiber comprises spraying a pretreatment agent at a weight ratio of 10-15% on the protein fiber and placing the pretreatment agent in an environment of 26-28° C. and 50-55% RH for 22-24 hours; the pretreatment agent comprises deionized water, a penetrant, an antistatic agent, a silicone-based softener, cocamidopropyl hydroxysulfobetaine, and water-based polyurethane; S3, Blowing Process: The pre-treated cashmere fiber and protein fiber are blown for the first time according to the blending ratio, and then packaged into mixed fiber bales. The mixed fiber bales are then blown for the second time. The mixed fiber after the second blown is fed into a cotton feeder through a condenser and evenly transported to a single-beater lap forming machine to form a mixed fiber lap. S4, combing process: The mixed fiber laps are combed with a combing machine to form mixed fiber strips; a combing machine with 30 combing points is selected, and No. 33 card clothing is used for the initial combing, and No. 34 card clothing, the highest number for woolen spinning, is used for the final combing; the gauge from the front doffer to the front cylinder is set to 10-12 wires, and the spacing between the front cylinder and the five working rollers is 12, 12, 10, 8, and 8 wires respectively; S5. Spinning process: Spinning is performed using a mule spinning device.

2. The process for producing cashmere protein fiber blended yarn according to claim 1, wherein: The pretreatment agent includes 100 parts by mass of deionized water, 5-10 parts by mass of a penetrant, 10-15 parts by mass of an antistatic agent, 3-5 parts by mass of a silicone-based softener, 3-5 parts by mass of cocamidopropyl hydroxysulfobetaine and 5-10 parts by mass of an aqueous polyurethane.

3. The cashmere protein fiber blended yarn spun production process according to claim 1, characterized in that: The hair treatment 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, 2-4 parts by mass of 2-methyl-4-isothiazoline-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 sorbitan monooleate.

4. The process for producing cashmere protein fiber blended yarn according to claim 1, wherein: Spindle spinning includes two processes: drafting and twisting. During drafting, the total length of the machine is 1800-1900mm, the sliver length is 1400-1500mm, the sliver drafting ratio is 1.2-1.25, and the additional drafting ratio is 1.15-1.2; during twisting, the spindle speed is 1400-1450r / min when twisting the sliver, and the time is 5-5.5s; the spindle speed is 600-620 / min during drafting and twisting, and the time is 1.5-1.7s; the spindle speed is 3600-3700r / min during additional twisting, and the time is 5.5-6s.

5. The process for producing cashmere protein fiber blended yarn according to claim 1, wherein: It also includes the winding process; the working state of the self-winding electronic yarn clearer is set to: cotton knot 250%, short thick 130%×1.3cm, long thick 135%×30cm, thin thin 35%×25cm, and winding speed 400-420m / min.