CN-122013406-A - Processing method of weft elastic polyester fabric with high dimensional stability

Abstract

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a processing method of weft elastic polyester fabric with high dimensional stability. The method comprises the steps of grey cloth weaving, desizing, scouring, bleaching, pad drying and dyeing, dyeing and baking, tentering and rolling, wherein in the grey cloth weaving step, elastic polyester filaments are adopted in the weft direction, the elastic polyester filaments are twisted, the twist degree is 12-20 twists/inch, and steaming is carried out at 125-130 ℃ after the elastic polyester filaments in the weft direction are twisted. The invention forms a systematic solution by combining triple technologies of twisting and steaming to release yarn stress cooperatively, precisely baking at high temperature to eliminate internal stress of the fabric and assisting mechanical structure stabilization by a special softener, solves the problem of multi-dimensional instability of the weft elastic polyester fabric radically, and has outstanding creativity, practicability and remarkable quality improvement effect.

Inventors

• WANG HUI
• FANG XIAOJUN
• XU QIUSHENG
• ZU HONGWEI
• SONG LIN
• TANG HAIXIA
• YANG ZHEN

Assignees

• 鲁丰织染有限公司

Dates

Publication Date

20260512

Application Date

20251218

Claims (8)

1. 1. The processing method of the weft elastic polyester fabric with high dimensional stability is characterized by comprising the following steps of: weaving grey cloth, desizing, scouring, bleaching, rolling and dyeing, dyeing and baking, tentering and rolling; in the grey fabric weaving process, elastic polyester filaments are adopted in the weft direction, a twisting mode is adopted for the elastic polyester filaments, and the twist is 12-20 twists/inch; and (3) steaming at 125-130 ℃ after twisting the weft elastic polyester filaments.
2. 2. The method for processing the weft elastic polyester fabric with high dimensional stability according to claim 1, wherein the steaming time after the polyester filaments are twisted is 18-20 min.
3. 3. The method for processing the weft elastic polyester fabric with high dimensional stability according to claim 1 is characterized in that the specific process of the desizing procedure comprises 3-5 g/L of desizing enzyme, 2-4 g/L of penetrating agent and 0.5-1 g/L of scouring enzyme, wherein the temperature is 90-96 ℃ and the time is 5-15 min.
4. 4. The method for processing the weft elastic polyester fabric with high dimensional stability according to claim 1 is characterized in that the specific process of the scouring procedure comprises 10-20 g/L NaOH, 4-6 g/L penetrating agent and 3-6 g/L degreasing agent, wherein the temperature is 98-100 ℃ and the time is 10-20 min.
5. 5. The method for processing the weft elastic polyester fabric with high dimensional stability according to claim 1, wherein the specific process of the bleaching procedure is that 2-8 g/L of H 2 O 2 and 2-5 g/L of NaOH are adopted, the temperature is 98-100 ℃, and the time is 10-15 min.
6. 6. The method for processing the weft elastic polyester fabric with high dimensional stability according to claim 1, wherein the specific process of the pad dyeing procedure is padding dye liquor, padding by padding, the padding residual rate is 50-55%, and the drying temperature is 100-110 ℃.
7. 7. The method for processing the weft elastic polyester fabric with high dimensional stability according to claim 1, wherein the specific process of the dyeing and baking procedure is that the temperature is 190-195 ℃ and the time is 2.5 min-3 min.
8. 8. The method for processing the weft elastic polyester fabric with high dimensional stability according to claim 1, wherein the specific process of the tentering procedure is that the fabric is immersed in the treatment fluid with the rolling allowance of 60-65% below two times, the treatment fluid comprises 10-20 g/L of softening agent TF-4550C and 5-10 g/L of softening agent 8150A, and then the fabric is dried.

Description

Processing method of weft elastic polyester fabric with high dimensional stability Technical Field The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a processing method of weft elastic polyester fabric with high dimensional stability. Background With the continuous increase of consumer demands for comfort, fit and shape retention of clothing, stretch fabrics have become one of the mainstream products in the textile market. The weft elastic polyester fabric is widely applied to the fields of trousers, skirts, sports and leisure wear, shirts and the like due to excellent longitudinal softness and transverse elasticity, provides good wearing experience, and has the advantages of high inherent strength, good wrinkle resistance, easiness in washing, quick drying and the like of polyester fibers. However, the weft elastic polyester fabric has long faced serious dimensional stability challenges in the process of processing and using, which has become a key technical bottleneck restricting its high-end application. Firstly, the polyester has large and unstable thermal shrinkage, the polyester is thermoplastic fiber, and the elastic yarn has internal stress in the spinning and weaving processes. In the high-temperature links of post-finishing such as dyeing, shaping and the like, macromolecular chain segments in the fibers are rearranged, so that unpredictable shrinkage is generated when the fabric is heated in subsequent storage, ironing or washing, and clothes deformation and inaccurate sizing are caused. Secondly, the width of the polyester fabric is difficult to control, and under the wet and hot effects of dyeing and finishing processing, the weft elastic yarns are easy to retract, so that the cloth width is changed drastically. If the tension is forced to be drawn to the width of the finished product, the elasticity is damaged or the curling, the weft skew and the like are possibly caused due to excessive tension, and the production efficiency and the consistency of the quality of the finished product are affected. Finally, the shrinkage, especially the warp shrinkage, is difficult to reach the standard, and for stable breadth, the traditional process often applies larger warp tension, which damages the potential shrinkage of warp yarns, and leads to the warp shrinkage exceeding the standard of finished products after relaxation washing. Currently, the industry generally adopts methods for solving the problems, including increasing the setting temperature and time, which may lead to elastic loss, hardening of the hand, increased energy consumption, strengthening the mechanical preshrinking treatment, but with limited effect and susceptibility to structural damage to the open weave fabric, improving the hand with conventional softeners, but with limited contribution to dimensional stability, sometimes even aggravating yarn slippage due to excessive lubrication. Therefore, a processing method capable of systematically and mildly improving the dimensional stability of weft elastic polyester from the fiber layer to the fabric layer is developed, and under the premise of ensuring the basic performances such as elastic recovery rate, hand feeling and the like, the synergistic stability of heat shrinkage, breadth and shrinkage is realized, so that the processing method has important industrial significance and economic value. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide the processing method of the weft elastic polyester fabric with high dimensional stability, and the innovative yarn and post-finishing processing technology are adopted to enable the thermal shrinkage, the breadth and the shrinkage of the fabric to reach the customer standards, so that the quality stability of the fabric is improved. The processing technology is convenient and fast, the quality is stable, the energy-saving and environment-friendly development concept at the present stage is met, and the method has good popularization prospect. The invention relates to a processing method of a weft elastic polyester fabric with high dimensional stability, which comprises the following steps: weaving grey cloth, desizing, scouring, bleaching, rolling and dyeing, dyeing and baking, tentering and rolling; in the grey fabric weaving process, elastic polyester filaments are adopted in the weft direction, a twisting mode is adopted for the elastic polyester filaments, and the twist is 12-20 twists/inch; And (3) steaming the twisted weft elastic polyester filaments for 18-20 min at 125-130 ℃. The specific process of the desizing procedure comprises 3-5 g/L of desizing enzyme, 2-4 g/L of penetrating agent and 0.5-1 g/L of scouring enzyme, wherein the temperature is 90-96 ℃ and the time is 5-15 min. The specific process of the scouring procedure comprises 10-20 g/L NaOH, 4-6 g/L penetrating agent and 3-6 g/L deoiling agent, wherein the temperature is 98-100 ℃