A production method of pure cotton linen-like fabric

Abstract

The present application belongs to the field of textile dyeing and finishing technology, and particularly relates to a production method of pure cotton imitated hemp fabric, comprising the following processes: spinning, singeing, desizing, mercerizing, super softening, tentering, super softening, and preshrinking, wherein the spinning process uses 40% pre-spinning recycled cotton and 60% fine cotton to blend, and cotton imitated hemp slub yarn is spun, because the recycled cotton fiber is shorter, the slub length is shorter than the conventional slub, the slub is naturally uniform, and is closer to the appearance of hemp, the fabric has the hand feeling and appearance of hemp, and the wearing comfort is improved by combining the weave, specification design, and finishing process.

Description

Technical Field

[0001] This invention relates to a method for producing pure cotton linen-like fabric, belonging to the field of textile dyeing and finishing technology. Background Technology

[0002] Linen is dry, breathable, cool, and comfortable. Its natural hemp-like texture gives the fabric a casual look. With the rise of casual fabrics, linen has become the first choice for major brands. However, its price has continued to rise, and linen fabrics are rigid, can feel itchy, have poor wrinkle resistance and abrasion resistance, feel stiff, and are not comfortable to wear. Many imitation linen products have appeared on the market, most of which use slub yarn. However, regular slub yarn has long, dense, and rigid slub sections, which do not have the effect of natural hemp. As society continues to develop, people have higher requirements for wearing comfort and aesthetics. A hemp-like fabric with natural hemp texture and a comfortable, non-itchy feel has been born.

[0003] Patent: CN201310044755, the weave is two-up-one-down, with a warp yarn ratio of plain yarn to slub yarn of 4:1. Most linen fabrics on the market are one-up-one-down plain weave fabrics, and the slub yarn used is longer. They do not have the naturalness of linen knots, nor the dry feel of linen, and cannot meet customer needs.

[0004] Patent: CN201310413658.0, Method for producing slub yarn from waste cotton, which separately picks up long-staple cotton and combed waste cotton and obtains slub yarn through sliver blending. This method is inefficient, has a complex process, poor sliver blending uniformity, and results in localized low yarn strength. Summary of the Invention

[0005] The production process of the pure cotton linen-like fabric described in this invention is as follows: spinning → dyeing → weaving → singeing → desizing → mercerizing → super-softening → stretching → pre-shrinking; the structure design uses pure cotton 21-count slub yarn for both warp and weft, combined with a plain weave; in the spinning process, 40% recycled cotton from pre-spinning and 60% fine cotton are thoroughly blended, and the spinning method adopts a tight slub spinning method to achieve a linen-like texture effect; in the finishing process, anti-slip additives are added, and the fabric is patted with a super-soft warm air to give it a linen-like feel.

[0006] Preferably, the warp and weft yarns are pure cotton 21-count slub yarns, and the weave structure is 1 / 1 plain weave.

[0007] Preferably, the cotton used in the spinning process consists of 40% recycled cotton from the spinning process and 60% fine cotton, which are thoroughly blended. The weight-weighted average length of the recycled cotton from the spinning process is 12mm, the upper quarter length is 13.4mm, and the uniformity is 62%. The spinning method is a tight slub spinning method, and the yarn parameters are: slub spacing between 100 and 200 cm, slub ratio of 2 to 2.5, and slub length of 1 to 1.7 cm.

[0008] Preferably, the main fan volume for the ultra-soft process is 90, the down fan volume is 40, the machine speed is 10m / min, and the idle shooting time is 22s.

[0009] The dyeing and bleaching process conditions are as follows: bleaching temperature 105℃, with the following chelating agents added: refining agent-SA-E: 0.045g / L, caustic soda NaOH 48°Be: 3.5g / L, hydrogen peroxide H2O2: 10g / L; dyeing temperature 90℃, with the following leveling agent-LA-R: 0.045g / L; reactive dyes are used; for antique colors, sodium sulfate-99% 50kg / bag: 1.8g / L, soda ash-40kg / bag: 0.4g / L is used; for removing floating color, soaping agent-WO: 0.045g / L, smoothing agent-WAX ES owf 0.225, neutralizing acid-PH-N: 0.0675g / L is used. The sodium sulfate auxiliary agent is manufactured by Huaian Hongyun; the caustic soda is preferably NaOH from Zibo Weiduo Economic and Trade Co., Ltd.; and the other auxiliary agents are preferably produced by Zibo Lurui Fine Chemical Co., Ltd.

[0010] The conditions for the singeing process are as follows: the flame position is selected as cutting and burning, the flame intensity is 8~14 mbar, and the machine speed is 80~120 m / min.

[0011] The desizing process conditions are as follows: steaming box temperature 98℃, steaming box stacking time 5 minutes, machine speed 80m / min, washing tank temperature 90℃, and desizing aids: high-temperature desizing enzyme 20g / L, penetrant 3g / L, and refining agent 15g / L. The high-temperature desizing enzyme is preferably DS-HT from Zibo Lurui Fine Chemical Co., Ltd., the refining agent is preferably XC-J from Qingdao Xietong Chemical Co., Ltd., and the penetrant is preferably WR-03 from Qingdao Ounos Industry and Trade Co., Ltd.

[0012] The mercerizing process conditions are as follows: low-alkali mercerizing, alkali concentration of 18 Baume degrees, needle tension of 80N, machine speed of 70 meters / minute, alkali temperature of 25℃, water washing tank temperature of 70℃, and fabric pH value of 5~7.

[0013] The conditions for the ultra-softening process are as follows: main fan air volume 90, down fan air volume 40, machine speed 10m / min, and no-load shooting time 22s.

[0014] Preferably, the tenter frame has the following acid-base stabilizing properties: pH-X: 2g / L, L-26: 5g / L, WA-M: 2g / L; the tenter frame drying oven temperature is 105℃; the machine speed is 50 m / min; and the overfeed is 3.5%. The additives are preferably produced by Zibo Lurui Fine Chemical Co., Ltd.

[0015] The pre-shrinking process conditions are as follows: steam humidification, rubber blanket temperature 115℃, felt blanket temperature 120℃, pressure torque 16mm, and machine speed 40m / min.

[0016] The beneficial effects of this invention are:

[0017] This invention recycles some combed cotton fibers, making resource reuse possible. The combed cotton fibers are short and irregular in length, and are spun into slub yarn. The length and thickness of the slubs are random, and the slub effect is not rigid, but more similar to the texture of real linen.

[0018] The present invention adds anti-slip agents and penetrating agents to the finishing process, so that the fabric has the crispness and dryness of linen, as well as moisture absorption and breathability, and improves the itching sensation of linen. Attached Figure Description

[0019] Figure 1 Comparison of fabrics in Example 1 and Comparative Example 1 (left: pure cotton linen-like fabric; right: pure linen).

[0020] Figure 2 Comparison of fabrics in Example 2 and Comparative Example 2 (left: pure cotton linen-like fabric; right: pure linen). Detailed Implementation

[0021] Example 1

[0022] The sample was made of the same color for both warp and weft, with a 1 / 1 plain weave. The warp yarn was 21-count pure cotton slub yarn, and the weft yarn was 21-count pure cotton slub yarn. The warp density was 60 threads / inch, and the weft density was 48 threads / inch.

[0023] The specific implementation steps are as follows:

[0024] The processing steps are as follows: spinning → dyeing → weaving → singeing → desizing → mercerizing → super softening → stretching → pre-shrinking.

[0025] Spinning: The warp and weft yarns are blended in a ratio of 40% combed cotton and 60% lint cotton, using a bag blending method; the weight-weighted average length of the combed cotton is 12, the upper quartile length is 13.4, and the uniformity is 62. The spinning method is a compact slub spinning method. Yarn parameters: slub spacing within 100 cm, slub ratio 2, slub length 1 cm.

[0026] Bleaching and dyeing: conventional cotton fabric bleaching, dyeing, and soaping processes for dyeing yarn.

[0027] Singeing and desizing processes: Singeing and desizing are performed in a combined operation. Singeing is done by cutting and burning with a flame intensity of 10 mbar and a machine speed of 100 m / min. The fabric is singeed on both sides, with the reverse side first and then the front side. Desizing is done using enzyme desizing with 30 g / L of desizing enzyme. The steamer is at 98°C, the fabric is stacked in the steamer for 5 minutes, the machine speed is 80 m / min, and the washing tank temperature is 92°C.

[0028] Mercerizing alkali concentration 18 Baume, needle plate tension 80N, machine speed 50 m / min, alkali temperature 25℃, water washing tank temperature 70℃, fabric pH value 6.4.

[0029] Tensile stabilizer pH-X: 2g / L, anti-slip agent L-26: 5g / L, penetrant WA-M: 3g / L, tenter frame drying room temperature: 110 ℃, machine speed: 50 m / min, overfeed 3.5%.

[0030] The main fan volume for the ultra-soft process is 90, the down fan volume is 40, the machine speed is 10m / min, and the no-load shooting time is 22s.

[0031] Pre-shrink steam humidification, rubber blanket temperature 110℃, felt blanket temperature 120℃, pressure torque 16mm, machine speed 40m / min.

[0032] Comparative Example 1

[0033] The sample was a single color, with a 1 / 1 plain weave, 21-count linen warp yarns, 21-count linen weft yarns, a warp density of 60 threads / inch, and a weft density of 48 threads / inch.

[0034] Example 2

[0035] The sample is striped, with a 1 / 1 plain weave. The warp yarn is 21-count pure cotton slub yarn, and the weft yarn is 21-count pure cotton slub yarn. The warp density is 60 threads / inch, and the weft density is 48 threads / inch.

[0036] The specific implementation steps are as follows:

[0037] The processing steps are as follows: spinning → dyeing → weaving → singeing → desizing → mercerizing → super softening → stretching → pre-shrinking.

[0038] Spinning: The warp and weft yarns are blended in a 40% recycled cotton and 60% fine cotton mixture before spinning. The blending method is bag blending. The weight-weighted average length of combed waste cotton is 12, the upper quarter length is 13.4, and the uniformity is 62. A compact slub spinning method is used. Yarn parameters: slub spacing within 200cm, slub ratio 2.5, slub length 1.7cm.

[0039] Bleaching and dyeing: conventional cotton fabric bleaching, dyeing, and soaping processes for dyeing yarn.

[0040] Singeing and desizing processes: Singeing and desizing are performed in a combined operation. Singeing is done by cutting and burning with a flame intensity of 10 mbar and a machine speed of 100 m / min. The fabric is singeed on both sides, with the reverse side first and then the front side. Desizing is done using enzyme desizing with 30 g / L of desizing enzyme. The steamer is at 98°C, the fabric is stacked in the steamer for 5 minutes, the machine speed is 80 m / min, and the washing tank temperature is 92°C.

[0041] Mercerizing alkali concentration 18 Baume, needle plate tension 80N, machine speed 50 m / min, alkali temperature 25℃, water washing tank temperature 70℃, fabric pH value 6.4.

[0042] Tensile stabilizer pH-X: 2g / L, anti-slip agent L-26: 5g / L, penetrant WA-M: 3g / L, tenter frame drying room temperature: 130 ℃, machine speed: 70 m / min, overfeed 3.0%.

[0043] The main fan volume for the ultra-soft process is 90, the down fan volume is 40, the machine speed is 10m / min, and the no-load shooting time is 22s.

[0044] Pre-shrink steam humidification, rubber blanket temperature 110℃, felt blanket temperature 120℃, pressure torque 16mm, machine speed 40m / min.

[0045] Comparative Example 2

[0046] The sample is striped, with a 1 / 1 plain weave, 21-count linen warp yarns, 21-count linen weft yarns, a warp density of 60 threads / inch, and a weft density of 48 threads / inch.

Claims

1. A method for producing a pure cotton linen-like fabric, characterized in that, The processing flow is as follows: spinning → dyeing → weaving → singeing → desizing → mercerizing → super softening → stretching → super softening → pre-shrinking; The fabric is designed with pure cotton 21-count slub yarn for both warp and weft, combined with a plain weave. The spinning process uses 40% recycled cotton from pre-spinning and 60% fine cotton, which are thoroughly blended. The spinning method is a tight slub spinning method, which creates a linen-like texture effect through the slub yarn. In the finishing process, anti-slip additives are added, and the fabric is patted with an ultra-soft warm air to give it the feel and appearance of linen.

2. The method for producing a pure cotton linen-like fabric according to claim 1, characterized in that, The warp and weft yarns are pure cotton 21-count slub yarns, and the weave structure is 1 / 1 plain weave.

3. The method for producing a pure cotton linen-like fabric according to claim 1, characterized in that, Spinning process: Fine cotton A and pre-spinning recycled cotton B are mixed on a disc -> carding machine -> drawing -> roving -> spinning -> winding -> packaging. The cotton blend uses 40% pre-spinning recycled cotton and 60% fine cotton, which are thoroughly blended. The weight-weighted average length of the pre-spinning recycled cotton is 12 mm, the upper quarter length is 13.4 mm, and the uniformity is 62%. The spinning method adopts a compact slub spinning method. Yarn parameters: slub spacing 100~200 cm, slub ratio 2~2.5, slub length 1~1.7 cm.

4. The method for producing a pure cotton linen-like fabric according to claim 1, characterized in that, The main fan volume for the ultra-soft process is 90, the down fan volume is 40, the machine speed is 10m / min, and the no-load shooting time is 22s.

5. The method for producing a pure cotton linen-like fabric according to claim 1, characterized in that, For the stretching process, the acid-base stabilizer PH-X is 2g / L, the anti-slip agent L-26 is 5g / L, the penetrant WA-M is 3g / L, the drying oven temperature is 110~130 ℃, the machine speed is 50~70 m / min, and the overfeed is 3.0~3.5%.

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