CN102719969A - Multi-fibre blending fabric - Google Patents

Abstract

The invention discloses a multi-fibre blending fabric, which is made from flax fibre, Lyocell fibre and bamboo fibre according to a certain blending ratio. The multi-fibre blending fabric can solve problems of cotton fibre such as being airtight, removing moisture slowly and producing bacteria and mildew easily. Three fibres of the flax fibre, the Lyocell fibre and the bamboo fibre are finely combined together and the characteristics of the three fibers are given full play so that the three fibres are complemented each other with advantages. Therefore the yarn strength is improved. The multi-fibre blending fabric is integrated with health, fashion, quality and environmental protection.

Description

Multi-fiber blend fabric

technical field

The invention relates to a blended fabric, in particular to a multi-fiber blended fabric.

Background technique

Today, when people are returning to nature and advocating green textiles, pure natural fiber products can no longer satisfy people's pursuit of fashionable, comfortable and healthy life. The cotton fiber commonly used in the home textile industry has good hygroscopicity and is soft and close to the skin. At the same time, it also has the disadvantages of being airtight and slow in dehumidification, and it is easy to breed bacteria and cause mildew. The textile products made of flax fiber are crisp and smooth, breathable and cool, moisture-wicking, non-stick to the skin, anti-mildew and antibacterial, no static electricity, simple and elegant, and a combination of natural beauty and health care modern consumer fashion. It has become the first choice for people's summer consumption due to its characteristics. However, the wear resistance of flax fiber is only average, and its durability is poorer than that of cotton fabrics, its drapability and resilience are poor, its spinnability is low, and its anti-mildew and moth resistance is weak. Purely spun linen fabrics are relatively rough and low-grade, making them uncomfortable to wear next to the body.

Contents of the invention

Purpose of the invention: The purpose of the invention is to provide a multi-fiber blended fabric in order to solve the deficiencies of the prior art.

The technical solution adopted in the present invention: a multi-fiber blended fabric, which is formed by blending flax fiber, Lyocell fiber and bamboo fiber, the warp and weft are the same, and the flax fiber is 30-45%, Lyocell fiber is 35-45%, bamboo fiber is 20-35%.

The function of flax is that it is similar to human skin, and has natural functions such as temperature adjustment, skin protection, anti-virus and antibacterial; flax fiber fabric has good hygienic performance, fast moisture absorption and heat dissipation, breathable and smooth, comfortable body feeling, warm in winter and cool in summer, eliminates static electricity, and is anti-static. Anti-pollution, anti-dust and other health care functions; flax contains hemicellulose that can absorb ultraviolet rays, so that ultraviolet rays cannot irradiate the human body, protect the skin, and have anti-magnetic and anti-radiation effects.

Lyocell fiber combines the advantages of natural fiber and synthetic fiber. It has the advantages of good hygroscopicity, breathability and comfort of cellulose fiber. The wearing comfort is far better than that of polyester. At the same time, it has the advantage of high strength of synthetic fiber, its strength is higher than that of cotton and ordinary viscose, it has good washing dimensional stability and good cost performance, and Lyocell fiber and flax fiber have good blending properties.

Bamboo charcoal fiber has fine unit fineness, soft hand feeling, good toughness and good resilience. And it also has good antibacterial and antibacterial properties and super adsorption capacity, and can absorb, decompose and deodorize harmful substances and dust such as formaldehyde, benzene, toluene and ammonia. It can emit far-infrared rays, store heat and keep warm, and its temperature rises faster than ordinary cotton fabrics. The high balanced moisture regain and water retention rate of bamboo charcoal fiber endow it with the ability to regulate humidity. In addition, bamboo charcoal fiber has high negative ion emission concentration and high mineral content, which is very beneficial to health.

Spinning process and blending scheme design:

Warp and weft yarn specifications: flax fiber 30-45/Lyocell fiber 35-45/bamboo fiber 20-3540-60

Twist twist direction: 120pcs/10cm/Z

Spinning main technological process (known equipment and technology):

A002D type plucking machine → A035D type mixed cotton opener → A092 type cotton box feeder → 1171 type lapping machine → 1181C carding machine → FA302 type drawing frame → FA311 type drawing frame (two lanes) → A454G Type roving frame→FA5o6 type spinning frame→drying→winding.

Beneficial effects: the green and environment-friendly flax fiber, Lyocell fiber and bamboo fiber are selected for blending and interweaving, so that the performance advantages of various fibers are complementary. The fabric not only has good moisture absorption and air permeability, but also has a smooth, soft, and shape-retaining property, and the raw material can be degraded naturally, which is natural and environmentally friendly.

Detailed ways

The present invention will be further described below in conjunction with specific embodiment:

Example 1: flax fiber 40%/Lyocell fiber 40%/bamboo charcoal fiber 20% 40 pieces

1. Open and clean cotton

The task is to uniformly make a cotton web of a certain quality through grasping, opening, removing impurities and mixing the three raw materials of flax, Lyocell and bamboo fiber according to the requirements of cotton blending. The flax, Lyocell and bamboo fibers are then mixed in a 40/40/20 ratio on a disc bale. The process of opening and cleaning cotton adopts the process of "more loosening, less beating, heavy and even mixing". The cotton picking machine adopts dense beaters, and the cotton storage capacity of the cotton box should reach more than 2/3 of its height, so that it is easy to mix evenly. Increase the speed ratio of inclined curtains and flat curtains to facilitate opening and loosening. The porcupine opener adopts a card beater, which can strengthen carding and reduce fiber damage. Due to the large friction coefficient of Lyocell fiber and hemp fiber, the fan speed of the lapping machine is increased, which is more than 30% faster than that of the comprehensive beater, which is convenient for the smooth transfer of fibers. A gap of 5mm is left between the cotton boards, and the plane is filled with air to improve the lap. Horizontal unevenness. The main process parameters are: roll dry basis weight 365g/m, roll quality deviation ±200g, longitudinal unevenness <1.2%, transverse unevenness <4.5%, porcupine opener card needle beater speed 500r/min, comprehensive beater speed 900r /min, fan speed 1200r/min.

2. Carding process

The flax fiber, Lyocell, and bamboo fiber have poor cohesion, and the cotton net falls, so a slightly larger cotton net tension is used for drafting, and a cotton support board is installed under the cotton net, and the nodding process of the rear car belly is adjusted reasonably, and the cover plate is properly accelerated Speed, remove as much fluff and fine impurities as possible. In order to reduce fiber damage, the licker-in and cylinder speeds should be appropriately reduced. In order to avoid Lyocell fibers and super-long noils from wrapping around the cylinder, the distance between the cylinder and the cover plate should also be properly enlarged, and the doffer speed should be slowed down to facilitate fine carding. The sliver weight is appropriately increased to reduce the holes in the cotton net and improve the evenness of the sliver. The main process parameters are as follows: cylinder rotation speed 360r/min, licker-in roller rotation speed 360r/min, doffer rotation speed 18r/min, distance between feeding plate and licker-in roller 0.18inln, cylinder-doffer interval 0.13mm, cylinder-cover plate The intervals are 0.30, 0.28, 0.23, 0.23, 0.28mm, the intervals from the licker-in to the bottom of the small drain are 2mm, the sliver weight is 17g/5m, and the flower rate of the cover is 4.5%.

3. Drawing process

In order to strengthen the mixing and improve the evenness, the process measures of "three-way mixing, forward and reverse phase joining" are adopted for the drawing. The flax fibers are long, and there are a small amount of ultra-long fibers, and the length unevenness is large, so larger rollers are used. The gripping distance and roller pressure are used to achieve the length of the break and keep the short, so as to reduce the "hard head" problem caused by the inability to open the draft during the post-process processing. Due to the messy fibers entering the head and the presence of hooks, a larger draft ratio is used in the rear area of the head. The focus of the third parallel is to improve the evenness of the cooked sliver and reduce the uneven quality. The principle of centralized drafting is adopted, that is, the drafting is concentrated in the front area, and the total draft and the draft in the rear area should be small. The selection of specific process parameters is shown in Table 1.

Table 1 Process parameters of flax/Lyocell/bamboo fiber blended yarn drawing frame

project Head and Two combined Sanhe combined root number 6 8 6 Total draft multiple 6.5 9.4 6 Rear area draft multiple 1.77 1.37 1.37 Roller distance/mm 10/22 13/13/13 13/13/13 Front roller speed/r·min ^-1 1346 1346 1346 Adjusting ring diameter/mm 14 14 14 Bell mouth diameter/mm 3.4 3.2 3.0 Quantitative weight of dry strips/g·(5m) ^-1 17 16 16 Evenness CV/% 7.4 7.0 7.0

4. Roving process

Four-roller double-short apron drafting is adopted, and the cohesion of flax fiber, Lyocell, and bamboo fiber is poor, so a smaller spinning tension, a larger roving twist coefficient, and a lower speed are used, which is conducive to reducing broken ends . The main technical parameters of the roving are: total draft 7.609 times, rear draft 1.33 times, roller gauge 12NIITI×27mill×30mill, nip gauge 6.5lnln, roving twist coefficient 85, dry basis weight 4.5g/10m, front roller speed 130r/min, quality unevenness 1.2%, evenness CV 13.2%.

5. Spinning process

Spinning flax fiber, Lyocell and bamboo fiber yarn on cotton spinning frame is more difficult than spinning cotton yarn and cotton blended yarn of the same number, because the hemp fiber is thick, hard, straight, slippery, and naturally crimped, and the cohesion between fibers is poor, and at the same time The short fiber rate is high, and there are ultra-long fibers. Although a large number of short fibers and some ultra-long fibers have been removed through the previous processes, there are still some short fibers and ultra-long fibers in the roving, which brings difficulties to the production of spun yarns. , and deteriorate the yarn quality. The length of flax fiber in the blended yarn is long, and contains a small part of ultra-long fiber, and the twist coefficient of the roving is relatively large, so the spinning process adopts a slippery drafting process, using heavy pressure, low speed, slightly larger rear draft and slightly larger Roller Gauge. Hemp fiber has poor elasticity, poor cohesion, and many short fibers. In order to increase yarn strength and elasticity and reduce hairiness, the twist coefficient of spun yarn should be slightly larger. The twist coefficient we choose is 405.

The spinning process parameters are: yarn fineness 40.7tex (14.5Ne), total draft 12.5 times, rear zone draft 1.424 times, roller gauge 18.5mm×26nTln, front roller speed 234r/min, yarn twist 62 twists/ 10cm, yarn twist factor 405.

6. Winding

The winding process adopts the technological route of "small tension, low speed, guaranteed elongation, and air splicing".

(1) The elongation of hemp fiber, Lyocell, and bamboo fiber blended yarn is low. In order to maintain the elasticity of the yarn to the maximum extent, a small tension of 6.9CN is used for winding.

(2) The lower speed is beneficial to reduce the regenerated hairiness and maintain the elongation of the yarn, the speed is 570m/min.

(3) Check the manual air splicer FG304 spindle by spindle to ensure that the splicing strength is greater than 85% of the original yarn strength.

Embodiment 2: flax fiber 30%/Lyocell fiber 40%/bamboo charcoal fiber 30% 60

1. Open and clean cotton

The task is to uniformly make a cotton web of a certain quality through grasping, opening, removing impurities and mixing the three raw materials of flax, Lyocell and bamboo fiber according to the requirements of cotton blending. The flax, Lyocell and bamboo fibers are then mixed in a 40/40/20 ratio on a disc bale. The process of opening and cleaning cotton adopts the process of "more loosening, less beating, heavy and even mixing". The cotton picking machine adopts dense beaters, and the cotton storage capacity of the cotton box should reach more than 2/3 of its height, so that it is easy to mix evenly. Increase the speed ratio of inclined curtains and flat curtains to facilitate opening and loosening. The porcupine opener adopts a card beater, which can strengthen carding and reduce fiber damage. Due to the large friction coefficient of Lyocell fiber and hemp fiber, the fan speed of the lapping machine is increased, which is more than 30% faster than that of the comprehensive beater, which is convenient for the smooth transfer of fibers. A gap of 5mm is left between the cotton boards, and the plane is filled with air to improve the lap. Horizontal unevenness. The main process parameters are: roll dry basis weight 365g/m, roll quality deviation ±200g, longitudinal unevenness <1.2%, transverse unevenness <4.5%, porcupine opener card needle beater speed 500r/min, comprehensive beater speed 900r /min, the fan speed is 1200r/min.

2. Carding process

The flax fiber, Lyocell, and bamboo fiber have poor cohesion, and the cotton net falls, so a slightly larger cotton net tension is used for drafting, and a cotton support board is installed under the cotton net, and the nodding process of the rear car belly is adjusted reasonably, and the cover plate is properly accelerated Speed, remove as much fluff and fine impurities as possible. In order to reduce fiber damage, the licker-in and cylinder speeds should be appropriately reduced. In order to avoid Lyocell fibers and super-long noils from wrapping around the cylinder, the distance between the cylinder and the cover plate should also be properly enlarged, and the doffer speed should be slowed down to facilitate fine carding. The sliver weight is appropriately increased to reduce the holes in the cotton net and improve the evenness of the sliver. The main process parameters are as follows: cylinder rotation speed 360r/min, licker-in roller rotation speed 360r/min, doffer rotation speed 18r/min, distance between feeding plate and licker-in roller 0.18inln, cylinder-doffer interval 0.13mm, cylinder-cover plate The intervals are 0.30, 0.28, 0.23, 0.23, 0.28mm, the intervals from the licker-in to the bottom of the small drain are 2mm, the sliver weight is 17g/5m, and the flower rate of the cover is 4.5%.

3. Drawing process

In order to strengthen the mixing and improve the evenness, the process measures of "three-way mixing, forward and reverse phase joining" are adopted for the drawing. The flax fibers are long, and there are a small amount of ultra-long fibers, and the length unevenness is large, so larger rollers are used. The gripping distance and roller pressure are used to achieve the length of the break and keep the short, so as to reduce the "hard head" problem caused by the inability to open the draft during the post-process processing. Due to the messy fibers entering the head and the presence of hooks, a larger draft ratio is used in the rear area of the head. The focus of the third parallel is to improve the evenness of the cooked sliver and reduce the uneven quality. The principle of centralized drafting is adopted, that is, the drafting is concentrated in the front area, and the total draft and the draft in the rear area should be small. The selection of specific process parameters is shown in Table 1.

Table 1 Process parameters of flax/Lyocell/bamboo fiber blended yarn drawing frame

project Head and Two combined Sanhe combined root number 6 8 6 Total draft multiple 6.5 9.4 6 Draft multiples in back zone 1.77 1.37 1.37 Roller distance/mm 10/22 13/13/13 13/13/13 Front roller speed/r·min ^-1 1346 1346 1346 Adjusting ring diameter/mm 14 14 14 Bell mouth diameter/mm 3.4 3.2 3.0 Quantitative weight of dry strips/g·(5m) ^-1 17 16 16 Evenness CV/% 7.4 7.0 7.0

4. Roving process

Four-roller double-short apron drafting is adopted, and the cohesion of flax fiber, Lyocell, and bamboo fiber is poor, so a smaller spinning tension, a larger roving twist coefficient, and a lower speed are used, which is conducive to reducing broken ends . The main technical parameters of the roving are: total draft 7.609 times, rear draft 1.33 times, roller gauge 12NIITI×27mill×30mill, nip gauge 6.5lnln, roving twist coefficient 85, dry basis weight 4.5g/10m, front roller speed 130r/min, quality unevenness 1.2%, evenness CV 13.2%.

5. Spinning process

It is more difficult to spin flax fiber, Lyocell and bamboo fiber yarn on cotton-type spinning frame than cotton yarn and cotton blended yarn of the same number, because the hemp fiber is thick, hard, straight, slippery, and naturally crimped, and the cohesion between fibers is poor, and at the same time The short fiber rate is high, and there are ultra-long fibers. Although a large number of short fibers and some ultra-long fibers have been eliminated through the previous processes, there are still some short fibers and ultra-long fibers in the roving, which brings difficulties to the production of spun yarns. , and deteriorate the yarn quality. The length of flax fiber in the blended yarn is long, and contains a small part of ultra-long fiber, and the twist coefficient of the roving is relatively large, so the spinning process adopts a slippery drafting process, using heavy pressure, low speed, slightly larger rear draft and slightly larger Roller Gauge. Hemp fiber has poor elasticity, poor cohesion, and many short fibers. In order to increase yarn strength and elasticity and reduce hairiness, the twist coefficient of spun yarn should be slightly larger. The twist coefficient we choose is 450.

The spinning process parameters are: yarn fineness 40.7tex (14.5Ne), total draft 12.5 times, back zone draft 1.424 times, roller gauge 18.5mm×26nTln, front roller speed 234r/min, yarn twist 72 twists/ 10cm, yarn twist coefficient 450.

6. Winding

The winding process adopts the technological route of "small tension, low speed, guaranteed elongation, and air splicing".

(1) The elongation of hemp fiber, Lyocell, and bamboo fiber blended yarn is low. In order to maintain the elasticity of the yarn to the maximum extent, a small tension of 6.9CN is used for winding.

(2) The lower speed is beneficial to reduce the regenerated hairiness and maintain the elongation of the yarn, the speed is 570m/min.

(3) Check the manual air splicer FG304 spindle by spindle to ensure that the splicing strength is greater than 85% of the original yarn strength.

Claims (1)

1. multifilament blended fabric; It is characterized in that: it is by linen fibre, Lyocell fiber, bamboo fiber blended forming; Warp thread is identical with weft yarn, and by weight percentage, described linen fibre is that 30-45%, Lyocell fiber are that 35-45%, bamboo fibre are 20-35%.