Preparation process of knitted fabric with high dimensional stability

文档序号：1434458 发布日期：2020-03-20 浏览：20次中文

阅读说明：本技术 一种高尺寸稳定性针织面料的制备工艺 (Preparation process of knitted fabric with high dimensional stability ) 是由章富杰林起泰林松聪于 2019-12-18 设计创作，主要内容包括：本申请公开了一种高尺寸稳定性针织面料的制备工艺,该制备工艺包括精炼→松弛→前定形→染色→后整理；精炼,选含聚酯型氨纶的针织面料,于精炼液中下精炼,水洗,烘；松弛,面料放入58~62℃/63~66%RH下9~11min,松弛区内通2.8~3.3g/L的CO<Sub>2</Sub>,在无张力下使面料自然冷却至室温；前定形,面料164~166℃下热定型2~3s,车速为28~32m/min,在无张力下使面料自然冷却至室温；后整理,面料于整理液中浸泡,水洗,烘；174~176℃下热定型2~3s,车速为28~32m/min,在无张力下使面料自然冷却至室温；过程中各组份用量、过程时间及温度严格控制,具有提高尺寸稳定性的优点。(The application discloses high chiThe preparation process of the knitted fabric with dimensional stability comprises refining → relaxation → front shaping → dyeing → after finishing; refining, namely selecting a polyester spandex-containing knitted fabric, refining in a refining liquid, washing with water, and drying; relaxing, placing the fabric at a speed of 58-62 ℃/63-66% RH for 9-11 min, and introducing 2.8-3.3 g/L CO into a relaxation area 2 Naturally cooling the fabric to room temperature under the condition of no tension; pre-shaping, namely performing heat shaping on the fabric at 164-166 ℃ for 2-3 s, wherein the speed is 28-32 m/min, and naturally cooling the fabric to room temperature under the condition of no tension; after finishing, soaking the fabric in finishing liquor, washing and drying; heat setting for 2-3 s at 174-176 ℃, wherein the speed is 28-32 m/min, and naturally cooling the fabric to room temperature under no tension; the dosage of each component, the process time and the temperature are strictly controlled in the process, and the method has the advantage of improving the dimensional stability.)

1. A preparation process of a knitted fabric with high dimensional stability is characterized by comprising the steps of refining → relaxing → front shaping → dyeing → after finishing;

refining, namely selecting a polyester spandex-containing knitted fabric, putting the polyester spandex-containing knitted fabric into a refining liquid containing 2-3 g/L of a refining oil removing agent, and refining for 12-18 min at 37-42 ℃; washing with clear water at 20-35 ℃, and drying at 37-42 ℃ for 28-32 min;

loosening, namely taking the refined knitted fabric, placing the knitted fabric in a loosening area with the temperature of 58-62 ℃/63-66% RH for 9-11 min, and introducing 2.8-3.3 g/L CO into the loosening area₂(ii) a Then under no tension to makeNaturally cooling the knitted fabric to 20-35 ℃;

pre-shaping, namely taking the relaxed knitted fabric, shaping in a heat-shaping machine at 164-166 ℃, at the speed of 28-32 m/min for 2-3 s, and naturally cooling the knitted fabric to 20-35 ℃ under no tension;

after finishing, namely putting the dyed knitted fabric into finishing liquid containing 0.4-0.6 g/L of softening agent, soaking for 18-21 min at 20-35 ℃, washing with clear water at 20-35 ℃, and drying for 28-32 min at 37-42 ℃; then setting in a heat setting machine at the setting temperature of 174-176 ℃, the speed of 28-32 m/min and the setting time of 2-3 s, and naturally cooling the knitted fabric to 20-35 ℃ under the condition of no tension.

2. The process for preparing a knitted fabric with high dimensional stability according to claim 1, wherein the process comprises the steps of refining → relaxing → pre-shaping → dyeing → post-finishing;

(1) refining, namely selecting a polyester spandex-containing knitted fabric, putting the polyester spandex-containing knitted fabric into a refining liquid containing 2-3 g/L of a refining oil removing agent, and refining for 12-18 min at 37-42 ℃; washing with clear water at 20-35 ℃, and drying at 37-42 ℃ for 28-32 min; the refining oil removing agent comprises 78-82 wt% of sodium dodecyl sulfate and 18-22 wt% of dodecyl amino propionic acid, and the refining liquid further comprises 2-3 g/L of sodium carbonate;

the polyester spandex-containing knitted fabric is formed by interweaving warp yarns and weft yarns, wherein the warp yarns and the weft yarns are all cotton/spandex core-spun yarns;

(2) loosening, namely taking the refined knitted fabric, placing the knitted fabric in a loosening area with the temperature of 58-62 ℃/63-66% RH for 9-11 min, and introducing 2.8-3.3 g/L CO into the loosening area₂(ii) a Naturally cooling the knitted fabric to 20-35 ℃ under the condition of no tension;

(3) pre-shaping, namely taking the relaxed knitted fabric, shaping in a heat-shaping machine at 164-166 ℃, at the speed of 28-32 m/min for 2-3 s, and naturally cooling the knitted fabric to 20-35 ℃ under no tension;

(4) dyeing, namely putting the knitted fabric subjected to the shaping in advance into a dye solution at the temperature of 20-35 ℃, dyeing for 10-14 hours, washing with clear water at the temperature of 20-35 ℃, washing with soap solution at the temperature of 20-35 ℃, washing with clear water at the temperature of 20-35 ℃, and drying for 28-32 min at the temperature of 37-42 ℃; the dye solution comprises 1-2 g/L fatty alcohol-polyoxyethylene ether, 1-2 g/L dodecyl amino propionic acid, 10-15 g/L reactive dye and 5-7 g/L sodium hydroxide, and the bath ratio is 4: 1;

(5) after finishing, namely putting the dyed knitted fabric into finishing liquid containing 0.4-0.6 g/L of softening agent, soaking for 18-21 min at 20-35 ℃, washing with clear water at 20-35 ℃, and drying for 28-32 min at 37-42 ℃; then setting in a heat setting machine, wherein the setting temperature is 174-176 ℃, the vehicle speed is 28-32 m/min, the setting time is 2-3 s, and then naturally cooling the knitted fabric to 20-35 ℃ under the condition of no tension; the softening agent is an ester-based biquaternary ammonium salt softening agent.

3. The process for preparing a knitted fabric with high dimensional stability according to claim 2, wherein the process comprises the steps of refining → relaxing → pre-shaping → dyeing → post-finishing;

(1) refining, namely selecting a polyester spandex-containing knitted fabric, putting the polyester spandex-containing knitted fabric into a refining liquid containing 2.5g/L of refining degreaser, and refining for 15min at 40 ℃; washing with 25 deg.C clear water, and oven drying at 40 deg.C for 30 min; the refining degreasing agent comprises 80wt% of sodium dodecyl sulfate and 20wt% of dodecyl amino propionic acid, and the refining liquid further comprises 2.5g/L of sodium carbonate;

the polyester spandex-containing knitted fabric is formed by interweaving warp yarns and weft yarns, wherein the warp yarns and the weft yarns are all cotton/spandex core-spun yarns, and the all cotton/spandex core-spun yarns are C40s +40D spandex;

(2) loosening by taking refined knitted fabric, placing in a loosening zone at 60 deg.C/65% RH for 10min, introducing 3.0g/L CO₂(ii) a Naturally cooling the knitted fabric to 25 ℃ under the condition of no tension;

(3) pre-shaping, namely taking the relaxed knitted fabric, shaping in a heat-shaping machine at 165 ℃, 30m/min of speed and 2s of time, and naturally cooling the knitted fabric to 25 ℃ under no tension;

(4) dyeing, namely taking the knitted fabric which is shaped before, putting the knitted fabric into a dye solution at 25 ℃, dyeing for 12hr, washing with clear water at 25 ℃, washing with soap solution at 25 ℃ and clear water at 25 ℃ in sequence, and drying at 40 ℃ for 30 min; the dye solution comprises 1.2g/L fatty alcohol-polyoxyethylene ether, 1.6g/L dodecyl amino propionic acid, 12g/L reactive dye and 6g/L sodium hydroxide, and the bath ratio is 4: 1; the reactive dye is selected from reactive yellow 3RS or reactive red F-2B or reactive blue GL;

(5) after finishing, namely putting the dyed knitted fabric into finishing liquid containing 0.5g/L of softening agent, soaking for 20min at 25 ℃, washing with clear water at 25 ℃, and drying for 30min at 40 ℃; then setting in a heat setting machine, wherein the setting temperature is 175 ℃, the vehicle speed is 30m/min, and the setting time is 2s, and naturally cooling the knitted fabric to 25 ℃ under the condition of no tension; the softening agent is an ester-based biquaternary ammonium salt softening agent.

4. The process for preparing a knitted fabric with high dimensional stability according to claim 1, wherein the process comprises the steps of refining → relaxing → pre-shaping → dyeing → post-finishing;

(1) refining, namely selecting a polyester spandex-containing knitted fabric, putting the polyester spandex-containing knitted fabric into a refining liquid containing 2-3 g/L of a refining oil removing agent, and refining for 12-18 min at 37-42 ℃; washing with clear water at 20-35 ℃, and drying at 37-42 ℃ for 28-32 min; the refining degreasing agent comprises 73-77 wt% of sodium dodecyl sulfate, 14-16 wt% of polyethylene glycol 2000 and 9-11 wt% of dodecyl amino propionic acid, and the refining liquid further comprises 2-3 g/L of sodium carbonate;

the polyester spandex-containing knitted fabric is formed by interweaving warp yarns and weft yarns, wherein the warp yarns and the weft yarns are respectively made of polyester and spandex yarn;

(4) dyeing, namely putting the knitted fabric subjected to the shaping before into a dye solution at the temperature of 20-35 ℃, heating to 110-120 ℃ at the speed of 0.9-1.1 ℃/min, preserving heat for 55-65 min, cooling to 35-45 ℃ at the speed of 2.8-3.1 ℃/min, washing with clear water at the temperature of 35-45 ℃, washing with soap solution at the temperature of 35-45 ℃, washing with clear water at the temperature of 35-45 ℃, and drying at the temperature of 37-42 ℃ for 28-32 min; the dye solution comprises 1-2 g/L fatty alcohol-polyoxyethylene ether, 0.8-1.1 g/L fatty amine-polyoxyethylene ether, 4-6 g/L disperse dye and 0.9-1.1 g/L glacial acetic acid, and the bath ratio is 5: 1;

(5) after finishing, namely putting the dyed knitted fabric into finishing liquid containing 0.4-0.6 g/L of softening agent, soaking for 18-21 min at 20-35 ℃, washing with clear water at 20-35 ℃, and drying for 28-32 min at 37-42 ℃; then setting in a heat setting machine, wherein the setting temperature is 174-176 ℃, the vehicle speed is 28-32 m/min, the setting time is 2-3 s, and then naturally cooling the knitted fabric to 20-35 ℃ under the condition of no tension; the softener comprises 88-91 wt% of ester-based biquaternary ammonium salt softener and 9-12 wt% of sodium lactate.

5. The process for preparing a knitted fabric with high dimensional stability according to claim 4, wherein the process comprises the steps of refining → relaxing → pre-shaping → dyeing → post-finishing;

(1) refining, namely selecting a polyester spandex-containing knitted fabric, putting the polyester spandex-containing knitted fabric into a refining liquid containing 2.3g/L of refining degreaser, and refining for 12-18 min at 40 ℃; washing with 25 deg.C clear water, and oven drying at 40 deg.C for 30 min; the refining degreasing agent comprises 75wt% of sodium dodecyl sulfate, 15wt% of polyethylene glycol 2000 and 10wt% of dodecyl amino propionic acid, and the refining liquid further comprises 2.2g/L of sodium carbonate;

the polyester spandex-containing knitted fabric is formed by interweaving warp yarns and weft yarns, wherein the warp yarns and the weft yarns are respectively formed by twisting polyester yarns and spandex yarns, the polyester yarns are 75D polyester yarns, the spandex yarns are 40D spandex yarns, and the polyester yarns and the spandex yarns respectively account for 40wt% and 60wt% of the knitted fabric;

(3) pre-shaping, namely taking the relaxed knitted fabric, shaping in a heat-shaping machine at 166 ℃, 30m/min of speed and 2s of time, and naturally cooling the knitted fabric to 25 ℃ under no tension;

(4) dyeing, namely taking the knitted fabric which is shaped before, putting the knitted fabric into a dye solution at 25 ℃, heating to 115 ℃ at the speed of 1.0 ℃/min, preserving heat for 60min, cooling to 40 ℃ at the speed of 3.0 ℃/min, washing with clear water at 40 ℃, washing with soap solution at 40 ℃ and clear water at 40 ℃ in sequence, and drying for 30min at 40 ℃; the dye solution comprises 1.4g/L fatty alcohol-polyoxyethylene ether, 0.9g/L fatty amine-polyoxyethylene ether, 5g/L disperse dye and 1.0g/L glacial acetic acid, and the bath ratio is 5: 1; the disperse dye is selected from disperse scarlet GS or disperse turquoise blue SGL;

(5) after finishing, namely putting the dyed knitted fabric into finishing liquid containing 0.5g/L of softening agent, soaking for 20min at 25 ℃, washing with clear water at 25 ℃, and drying for 30min at 40 ℃; then setting in a heat setting machine, wherein the setting temperature is 176 ℃, the vehicle speed is 30m/min, and the setting time is 2s, and naturally cooling the knitted fabric to 25 ℃ under the condition of no tension; the softener comprises 90wt% of esterquat softener and 10wt% of sodium lactate.

Technical Field

The invention relates to a preparation process of a knitted fabric with high dimensional stability.

Background

In recent years, spandex-containing stretch fabrics are popular in domestic and foreign markets and develop rapidly. Spandex-containing stretch fabrics have been favored since the 80's of the 20 th century. Especially in the later 90 s, the products are more and more applied because the products have higher elasticity and excellent resilience, soft hand feeling, comfortable wearing, beautiful appearance, easy sweat absorption and no generation of static electricity. At present, the fabric is widely applied to textile industry, from underwear to coat, from knitted fabric to woven fabric, from clothing cloth to decorative cloth and functional materials, and has wide development prospect and good economic benefit.

However, the dimensional stability of spandex-containing fabrics has been the focus of research.

Disclosure of Invention

The invention aims to provide a preparation process of a high-dimensional stability knitted fabric, which has the advantage of improving the dimensional stability.

The technical purpose of the invention is realized by the following technical scheme:

a preparation process of a knitted fabric with high dimensional stability comprises the steps of refining → relaxing → front shaping → dyeing → after finishing;

loosening, namely taking the refined knitted fabric, placing the knitted fabric in a loosening area with the temperature of 58-62 ℃/63-66% RH for 9-11 min, and introducing 2.8-3.3 g/L CO into the loosening area₂(ii) a Naturally cooling the knitted fabric to 20-35 ℃ under the condition of no tension;

According to the technical scheme, impurities such as oiling agents are removed by refining, the conditions that the polyester-containing spandex fabric is damaged and excessively deformed can be reduced by mild refining, the oiling agents are arranged on ① spandex before relaxation and heat setting, if the heat setting is performed before, smoke is generated at high temperature to cause fiber yellowing, and if ② is performed before, the fabric is unstable in shape, easy to wrinkle and deformed.

There are four main ways of relaxing, now: steaming, hot water treatment, solvent treatment, and dry heat treatment. The glass transition temperatures of the spandex soft segment are respectively-70 to-50 ℃ (polyether type) and 25 to 45 ℃ (polyester type), and for polyester spandex, the existing relaxation is generally carried out at 100 ℃ or 70 to 80 ℃ in the presence of water. In the application, the relaxation effect is achieved by controlling the constant temperature and humidity and introducing CO2 to combine with the moisture in the environment to form H2CO3 with certain permeability to the fabric.

Through the above arrangement, the process is mild and effective, and the size stability is effectively improved.

Preferably, the preparation process comprises the steps of refining → relaxing → pre-shaping → dyeing → post-finishing;