阅读说明：本技术 麻类纱穿筘前的预处理方法 (Pretreatment method before reeding of bast fiber yarns ) 是由 殷翠红 刘洋洋 周宝 赵洪 江鹏程 孙艳红 于 2020-06-05 设计创作，主要内容包括：本发明属于纺织技术领域,具体涉及一种麻类纱穿筘前的预处理方法。上轴工序和穿筘工序之间设置有加湿工序,加湿工序是采用加湿液对麻类纱经纱进行蒸汽加湿。本发明改变了麻类品种手工穿筘的传统工艺方法,采用蒸汽加湿装置,在织轴进行穿筘前对织轴外层经纱进行加湿处理,即在传统工艺中增加了加湿步骤,提高外层经纱的含湿率,改善麻类纱线强力、柔软性能,解决了麻类品种直接进行穿筘机穿筘的经纱断头问题,实现了麻类品种穿筘机进行穿筘的工艺。(The invention belongs to the technical field of spinning, and particularly relates to a pretreatment method of bast fiber yarns before reeding. A humidifying process is arranged between the upper shaft process and the reeding process, and the humidifying process is to perform steam humidification on the hemp yarn and warp by adopting humidifying liquid. The invention changes the traditional process method of manual reeding of the hemp varieties, adopts the steam humidifying device to humidify the outer-layer warp of the loom beam before reeding the loom beam, namely, a humidifying step is added in the traditional process, so that the moisture content of the outer-layer warp is improved, the strength and the flexibility of the hemp yarns are improved, the problem of warp breakage of the hemp varieties directly reeded by a reeding machine is solved, and the process of reeding the hemp varieties by the reeding machine is realized.)

1. A pretreatment method before the reeding of the bast fiber yarns comprises an upper shaft process and a reeding process, and is characterized in that a humidifying process is arranged between the upper shaft process and the reeding process, and the humidifying process is to perform steam humidification on the bast fiber yarns and warps by adopting humidifying liquid.

2. The method of claim 1, wherein the wetting agent is a mixture of a humectant and water.

3. The method of claim 2, wherein the humectant is fatty alcohol polyoxyalkylene ether.

4. The method of claim 1, wherein the humidifying fluid is present in a concentration of 10-20% by volume.

5. The pretreatment method before reeding of bast fiber yarn as claimed in claim 1, wherein the steam temperature is 100-130 deg.C and the humidifying time is 10-20 min.

6. The method of claim 1, wherein the bast yarns are prepared from bast fibers.

7. The method of claim 6, wherein the bast yarns are prepared from one or more of cotton, wool, regenerated cellulose, and chemical fibers.

8. The pretreatment method before reeding of hemp yarns according to claim 1, characterized in that the device used in the humidification process comprises a door-shaped creel (1), the upright columns on two sides of the door-shaped creel (1) are provided with reciprocating conveyor belts (2), two ends of each reciprocating conveyor belt (2) are respectively provided with a fixed pressing strip (3), the fixed pressing strips (3) are arranged between the upright columns on two sides of the door-shaped creel (1), the reciprocating conveyor belts (2) are provided with humidification air pipes (5), the humidification air pipes (5) and the fixed pressing strips (3) are arranged in parallel, the humidification air pipes (5) are connected with an electric heating steam generator (7) through steam transmission pipes (6), the humidification air pipes (5) are provided with steam spray holes (8), and warp yarns (9) are fixed on the fixed pressing strips (3).

9. The pretreatment method before reeding of hemp yarn as claimed in claim 8, wherein the reciprocating conveyor belt (2) and the fixing batten (3) are fixed on the upright posts at both sides of the portal creel (1) through fixing clips (4); the length of the reciprocating conveyor belt (2) is 115-125 cm; the distance between the humidifying air pipe (5) and the warp (9) is 2-4 cm; the steam spray holes (8) are arranged on the humidifying air pipe (5) at intervals; the diameter of the steam jet hole (8) is 0.5-1 mm; the distribution distance of the steam jet holes (8) is 1.6-2.2 m; the opening direction of the steam spray holes (8) is vertical to the plane where the upright columns on the two sides of the portal creel (1) are located; one side of the door-shaped creel (1) is provided with a beam of weaving (10), warp yarns (9) are wound on the beam of weaving (10), and the beam of weaving (10) is placed on a beam of weaving trolley (11).

10. The pretreatment method before reeding of hemp yarn according to claim 8 or 9, wherein the humidifying step is to fix the warp (9) on the fixing batten (3), the humidifying liquid is added into the electric heating steam generator (7) to generate steam, the steam enters the humidifying air pipe (5) through the steam transmission pipe (6), the steam is sprayed out through the steam spraying hole (8), and the humidifying air pipe (5) is driven by the reciprocating conveyor belt (2) to do up-and-down reciprocating motion to humidify the warp (9).

Technical Field

The invention belongs to the technical field of spinning, and particularly relates to a pretreatment method of bast fiber yarns before reeding.

Background

The yarn-dyed products are popular among people because of bright color, various styles and comfortable wearing. The yarn-dyed production process is also continuously improved, innovated and improved day by day in the development process. The weaving process in the current yarn-dyed production comprises the following steps: slashing, reeding and weaving, wherein reeding is a traditional process in the yarn weaving production process and aims to sequentially penetrate warp beam warps into a dropper, a heddle, a reed and the like according to the weaving process for weaving on a loom. Because the flax yarn is small in extension, thick in yarn count, large in rigidity, more in weak knots, easy to break and easy to twist, manual reeding is used for the warp-wise flax variety at the present stage, and the problems of low efficiency and high labor cost exist in the manual reeding.

Chinese patent CN 106435943A discloses a preparation method of flax and tencel interwoven fabric, which comprises the following steps: (1) a spooling process: winding and forming the flax warp by adopting a full-automatic winder; (2) a warping process: adjusting the warping parts of the flax warps by adopting a batch warping mode, halving the warping parts, and placing one expansion reed at intervals; (3) sizing: uniformly sizing the warp yarns by a sizing machine; (4) a reeding process: sequentially passing the flax warp through a dropper, a harness wire and a reed; arranging a groove body at the bottom of the back of the dropper, then placing a weight adjusting block in the groove body, adjusting the mass of the dropper, and controlling the mass of the dropper to be 0.28-0.32 g; independently customizing the model of the heddle, and controlling the specification of a heddle eye of the heddle to be 8 x 3.8 mm; (5) weaving: weaving flax warp yarns and tencel weft yarns by an air jet loom, placing a wax block on a weft storage rack, and humidifying on a warp beam by ultrasonic atomization; (6) a finishing procedure: and bleaching and internally packaging the prepared yarn. The weight of the dropper with the general specification in the reeding process is too light, so that the dropper is suspended in a half-empty space and does not sink after the flax warp yarn is cut off. The patent only solves the problem that whether the alarm can be given in time after the warp is broken, and still does not solve the problems that the reeding is easy to break and the twisting is easy.

Chinese patent CN 104278407A discloses a weaving process of a double-layer fabric with double weave, which comprises the following process steps: the spooling step → the warping step → the preparation of a size → the sizing step → the reeding step → the weaving step → the finishing step. In the process, JC27.8Tex +40D and JC/H (60/40)21.6Tex warp yarns are used, and one surface of the processed fabric, which shows the JC27.8Tex +40D warp yarns, is used as an outer layer, so that the stiffness and the shape retention of the garment are ensured; the surface of the fabric with the exposed C/H (60/40)21.6Tex warp yarns is used as an inner layer, the hemp fibers have excellent moisture absorption and moisture removal performance, and sweat and water vapor of a human body can be absorbed and discharged in time by the inner layer of the fabric, so that the wearing comfort of the garment is improved. According to the method, China hemp fibers are firstly sized and then reeded, so that the problems that the fabric is poor in moisture absorption and sweat releasing performance, uncomfortable to wear and prone to generating static electricity due to friction are solved, but the problems that reeding quality is poor and efficiency is low are still solved.

At present, a method for solving the problems of thread breakage and twisting of hemp yarns by directly using a reeding machine, improving the production efficiency and reducing the labor cost is urgently needed.

Disclosure of Invention

The invention aims to provide a pretreatment method before reeding of bast fiber yarns, which solves the problems of thread breakage and twisting of bast fiber yarns directly by using a reeding machine, effectively improves the efficiency of a reeding process, realizes the wearability of bast fiber variety machines under a normal workshop environment, replaces manual reeding, improves the production efficiency and reduces the labor cost.

The pretreatment method before the reeding of the bast fiber yarns comprises an upper shaft-mounting process and a reeding process, wherein a humidifying process is arranged between the upper shaft-mounting process and the reeding process, and the humidifying process is to perform steam humidification on bast fiber yarns and warps by adopting humidifying liquid.

The humidifying liquid is a mixed solution of a humectant and water.

The humectant is fatty alcohol polyoxyalkylene ether; sinvadine L-635, manufactured by Kunshan Minghe auxiliaries, is preferred.

The volume percentage concentration of the humidifying liquid is 10-20%.

The steam temperature is 100-130 ℃.

The humidifying time is 10-20 minutes.

The raw material of the hemp yarn comprises hemp fiber.

The hemp yarn also comprises one or more of cotton, wool, regenerated cellulose or chemical fiber.

The steam humidifying device used in the humidifying process comprises a door-shaped creel, wherein reciprocating type conveying belts are arranged on upright posts on two sides of the door-shaped creel, fixing pressing strips are respectively arranged at two ends of each reciprocating type conveying belt, the fixing pressing strips are arranged between the upright posts on two sides of the door-shaped creel, humidifying pipes are arranged on the reciprocating type conveying belts and are arranged in parallel with the fixing pressing strips, the humidifying pipes are connected with an electric heating steam generator through steam transmission pipes, steam spray holes are formed in the humidifying pipes, and warp yarns are fixed on the fixing pressing strips.

The reciprocating type conveying belt and the fixing pressing strip are fixed on the stand columns on two sides of the door-shaped creel through fixing clamps.

The length of the reciprocating conveyor belt is 115 cm and 125 cm.

The distance between the humidifying air pipe and the warp is 2-4 cm.

The steam jet holes are arranged on the humidifying air pipe at intervals.

The diameter of the steam jet hole is 0.5-1 mm.

The distribution distance of the steam jet holes is 1.6-2.2 m, and the warp beam warps with the beam width within 2.2 m can be humidified.

The opening direction of the steam jet holes is vertical to the plane where the upright columns on two sides of the portal creel are located.

One side of the door-shaped creel is provided with a beam, warp yarns are wound on the beam, and the beam is placed on a beam trolley.

The humidifying process is that the warp is fixed on the fixed pressing bar, humidifying liquid is added into the electric heating steam generator to generate steam, the steam enters the humidifying air pipe through the steam transmission pipe, the steam is sprayed out through the steam spraying holes, and the humidifying air pipe is driven by the reciprocating conveyor belt to do up-and-down reciprocating motion to humidify the warp.

The speed of the up-and-down reciprocating motion is 2-5 m/min, and the up-and-down stroke is 115 cm and 125 cm.

The upper shaft working procedure is that the warp beam after sizing is placed on a warp beam trolley, warp yarns with the length of 20 +/-5 cm at the tail end of the warp beam are pasted and fixed by masking tape, the tail end warp yarns are fixed by a clamping plate, and the warp yarns are wound for 3-5 circles in the warp beam direction; manually unwinding the beam to make the clamping plate pass around the brush roller and fix the clamping plate by using a hanging hammer; and then rolling the brush roller to increase the tension of the warp yarns, and combing the warp yarns from bottom to top by using a brush to straighten the warp yarns.

The reeding process comprises drafting and reeding.

In the invention, the hemp yarn after sizing is humidified, and drafting and reeding are carried out by using a reeding machine to finish preparation work before weaving, and the method comprises the following specific steps: upper shaft, warp humidifying, drafting and denting.

The device used in the humidifying process can be matched with reeding equipment for use, and the humidifying liquid is uniformly used for generating hot steam to humidify the hemp yarns. After the humidification treatment, the reeding machine operation can be carried out on the hemp varieties in a reeding workshop environment with the temperature of 28 ℃ and the humidity of 65%. After the warp of the loom beam is humidified, the moisture content of the hemp yarn is improved by 10-40%, the breaking strength is improved by 10-30% on average, the softness of the yarn is obviously improved, and the state can be maintained for 40-60 minutes in a reeding workshop environment.

The invention adopts the hot steam and the wet method, improves the moisture content of the warp, effectively improves the strength, the softness and the like of the warp, solves the problems of breakage and twisting of the linen yarns when directly using the reeding machine, and improves the variety applicability of the reeding machine equipment.

The invention has the following beneficial effects:

the invention changes the traditional process method of manual reeding of the hemp varieties, adopts the steam humidifying device to humidify the outer-layer warp of the loom beam before reeding the loom beam, namely, a humidifying step is added in the traditional process, so that the moisture content of the outer-layer warp is improved, the strength and the flexibility of the hemp yarns are improved, the problem of warp breakage of the hemp varieties directly reeded by a reeding machine is solved, and the process of reeding the hemp varieties by the reeding machine is realized.

The invention is suitable for the production of yarn-dyed varieties such as warp-direction pure ramie, ramie blended yarns and the like, can improve the performance of ramie yarns, improve the applicability of reeding machines of special fiber yarns such as the ramie yarns and the like, improve the production efficiency and the product quality, reduce the production cost, shorten the production period and create economic value and social value for enterprises and society.

The method is reasonable and simple, and can be used for reeding by reeding machine equipment in a normal workshop environment. Before the reeding machine is operated, the steam humidifying device is adopted to humidify the warp yarns, so that the strength and the flexibility of the warp yarns are effectively improved, the problem of broken yarns in the reeding machine operation process is solved, and the novel pre-reeding pretreatment process is suitable for equipment reeding.

Drawings

FIG. 1 is a schematic view of the structure of a steam humidifying device of the present invention;

in the figure: 1. a portal creel; 2. a reciprocating conveyor belt; 3. fixing a pressing strip; 4. fixing the card; 5. humidifying the air pipe; 6. a steam delivery pipe; 7. an electrically heated steam generator; 8. steam spraying holes; 9. warp yarns; 10. a beam of warp; 11. a beam of loom dolly.

Detailed Description

The present invention is further described below with reference to examples.