Ultra-short process processing technology for high-whiteness high-non-ironing environment-friendly waterproof polyester cotton fabric

Abstract

The invention belongs to the technical field of processing of textile fabrics, and particularly relates to an ultra-short process processing technology of a high-whiteness high-non-ironing environment-friendly waterproof polyester cotton fabric. The ultra-short flow processing technology of the high-whiteness high-non-ironing environment-friendly waterproof polyester-cotton fabric comprises the following technological steps that the polyester-cotton fabric is prepared through the medium-temperature desizing-scouring-bleaching and tentering technology; the parameters of the medium-temperature desizing-scouring-bleaching process are as follows: the process is carried out in an equipment steam box, and adopted assistants comprise caustic soda, hydrogen peroxide, a refining agent and a cold-batch agent; the stentering process parameters are as follows: the stentering is carried out in a stenter, and adopted auxiliaries comprise a polyester whitening agent, a cotton whitening agent, a non-ironing resin solution, a resin synergist and a fluoride-free waterproof agent. According to the ultra-short process processing technology for the high-whiteness high-non-ironing environment-friendly waterproof polyester-cotton fabric, the ultra-short process can be truly achieved, meanwhile, it is ensured that the polyester-cotton fabric has the characteristics of high whiteness, high non-ironing performance, low formaldehyde and environment friendliness, and the integrated processing technology is efficient, energy-saving and environment-friendly and integrates the waterproof function.

Description

Technical Field

[0001] This invention belongs to the field of textile fabric processing technology, specifically involving an ultra-short process for processing high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabrics. Background Technology

[0002] Polyester, as the highest-volume synthetic fiber, boasts advantages such as high strength, good abrasion resistance, dimensional stability, wrinkle resistance, easy washing and quick drying, vibrant colors, and high cost-effectiveness, making it widely used in the textile and apparel industry. Polyester-cotton blends combine the natural moisture-wicking, breathable, soft, and comfortable properties of cotton with the high strength and dimensional stability of polyester, making them highly popular with the market and consumers. However, due to significant differences in the chemical structure and dyeing properties of cotton and polyester, traditional processing often requires separate pretreatment, whitening, dyeing, and functional finishing. For example, cotton whitening often uses direct dyes through high-temperature steam treatment, while polyester whitening relies on disperse dyes through high-temperature hot melting or high-pressure impregnation; cotton dyeing commonly uses reactive or vat dyes, while polyester requires high-temperature dyeing with disperse dyes. This step-by-step processing method results in a lengthy process flow, high energy consumption, high production costs, low production efficiency, and complex process control. Adding wrinkle-resistant and iron-free functions further extends the processing cycle through resin impregnation, baking, and post-washing, increasing energy consumption and environmental pressure.

[0003] To shorten the process, the industry has explored some approaches. For example, based on the strong mechanical properties of polyester-cotton fabrics, a short pretreatment process has emerged that does not require sizing during weaving and does not require desizing during dyeing and finishing. However, this often leads to instability in the fabric's whiteness, wicking effect, and strength, especially for high-count or lightweight low-strength varieties, which are difficult to meet the requirements of subsequent processing.

[0004] Patent CN119221275A discloses a processing technology that combines polyester whitening and wrinkle-free finishing into a single bath, followed by cotton whitening and softening finishing. This integrates the processes to some extent, but the process still includes multiple pretreatment steps such as singeing, descaling, bleaching, mercerizing, and liquid ammonia treatment. Furthermore, cotton whitening still needs to be performed separately, making the overall process quite long and not achieving a truly "ultra-short process." In addition, the process still requires the use of formaldehyde scavengers to control formaldehyde release, indicating that the finishing system may still have formaldehyde residue issues, and there is room for improvement in its environmental friendliness.

[0005] Another patent, CN105297391A, proposes to combine the three processes of polyester whitening, wrinkle-free finishing, and baking into one step, saving two processes and achieving a wrinkle-free level of 3.5 or higher, with formaldehyde content controlled below 75ppm. However, the whiteness and wrinkle-free performance of the product obtained by this process still have room for improvement, and it does not involve waterproofing, nor does it meet stricter environmental standards (such as ≤15ppm) for formaldehyde content. Furthermore, this process still faces challenges in achieving the dual high standards of "high whiteness" and "high wrinkle-free" performance. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the existing technology and provide an ultra-short process for processing high-whiteness, high wrinkle-free, environmentally friendly and waterproof polyester-cotton fabrics. This process can truly achieve "ultra-short process" while ensuring that the polyester-cotton fabrics obtain high whiteness, high wrinkle-free performance, low formaldehyde and environmentally friendly characteristics, and integrate waterproof function. It is an efficient, energy-saving and environmentally friendly integrated processing technology.

[0007] The ultra-short process for processing high-whiteness, wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric includes the following steps: the polyester-cotton fabric is processed by medium-temperature annealing, sizing, and bleaching → stretching process. The medium-temperature descaling and bleaching process parameters are as follows: the process is carried out in the equipment steaming chamber, using additives including 6~12g / L caustic soda, 15~25g / L hydrogen peroxide, 10~30g / L refining agent, and 5-10g / L cold composting agent. The steaming chamber temperature is 65~75℃, and the time is 30~40min. The stretching process parameters are as follows: The process is carried out in a stretching machine, using auxiliaries including 5-10 g / L polyester brightener, 10-20 g / L cotton brightener, 40-120 g / L wrinkle-free resin solution, 10-20 g / L resin synergist, and 50-90 g / L fluorine-free waterproofing agent. The stretching machine drying oven temperature is 170-200℃, and the time is 30-60 seconds. The concentrations of the auxiliaries used in the medium-temperature annealing, scouring, and bleaching process, as well as the stretching process, refer to the overall system where all auxiliaries are dissolved in water.

[0008] The polyester-cotton fabric is produced by a process of singeing, medium-temperature annealing and bleaching, and stretching.

[0009] The refining agent is FORYL MAG-L, and the cold reactor agent is BF1631.

[0010] The caustic soda is 48°Be.

[0011] The non-ironing resin solution contains non-ironing resin and a catalyst, with a mass percentage of 60-80%:20-40% for the non-ironing resin and the catalyst. The non-ironing resin is EFR-3, and the catalyst is 531.

[0012] The polyester brightener is EVB, the cotton brightener is BLH, the resin synergist is MNN-7, and the fluorine-free waterproofing agent is R3.

[0013] In the singeing process described above: flame intensity: 15~17mBar, singeing method: through burning, machine speed: 110~130m / min.

[0014] The raw material to be processed is polyester-cotton blended fabric or polyester-cotton blended fabric.

[0015] The medium-temperature desizing, scouring and bleaching process is a shortened process that combines desizing, scouring and bleaching into one.

[0016] The stretching process described is a shortening process that combines four functions: polyester whitening, cotton whitening, wrinkle-free, and waterproofing.

[0017] Fabrics processed using the process of this invention have a whiteness of 150 or higher, wrinkle resistance of 3.2 or higher, and water resistance of 90 or higher.

[0018] Compared with the prior art, the beneficial effects of the present invention are: (1) This invention studies the processing technology and process of polyester-cotton high whiteness and high wrinkle-free woven fabrics, shortens the process to the greatest extent, reduces energy waste, and improves production efficiency. At the same time, the innovative process meets the requirements of high whiteness, high wrinkle-free and waterproof properties of the fabric, as well as the requirements of strength, hand feel and other indicators, and has good wearing performance.

[0019] (2) The process method adopted in this invention is simple and easy to implement, and can ensure the stability of product quality during the production process. It helps to reduce resource waste and environmental pollution, and has significant economic and social benefits. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments.

[0021] Unless otherwise specified, all raw materials used in the examples and comparative examples are commercially available.

[0022] The following are some of the raw materials used in the examples and comparative examples: The caustic soda (48°Be) mentioned above was purchased from Qilu Branch of China Petroleum & Chemical Corporation. The hydrogen peroxide (27.5 wt%) mentioned above was purchased from Shandong Minghua New Materials Co., Ltd. The refining agent FORYL MAG-L was purchased from KOKE Fine Chemicals (Shanghai) Co., Ltd. The aforementioned cold reactor agent BF1631 was purchased from Keke Fine Chemicals (Shanghai) Co., Ltd. The polyester brightener EVB was purchased from Anggao Chemical (Shanghai) Co., Ltd. The cotton brightener BLH mentioned above was purchased from Anggao Chemical (Shanghai) Co., Ltd. The wrinkle-free resin EFR-3 and catalyst 531 were purchased from Advanced Chemical Co., Ltd. The resin synergist MNN-7 mentioned above was purchased from Qingdao Ounos Industry & Trade Co., Ltd. The fluorine-free waterproofing agent R3 mentioned above was purchased from Anggao Chemical (Shanghai) Co., Ltd. The aforementioned silicone oil softener, RAYSOFT SMI-62, was purchased from Lurui Chemical Co., Ltd. The desquamation enzyme OPT-280 was purchased from Shijiazhuang Kunpu Chemical Co., Ltd. The refined enzyme 601-L mentioned above was purchased from Novozymes. The penetrant WA-M was purchased from Lurui Chemical Co., Ltd. The refining agent CRC was purchased from Angco Chemical (China) Co., Ltd. The chelating agent SQ-A was purchased from Lurui Chemical Co., Ltd.

[0023] Example 1 Fabric structure specifications: CVC45*T / C45*112*76*58 / 59, weave pattern: plain weave, composition: 50% cotton, 50% polyester, processing steps are as follows: Singeing: Flame intensity: 16 mBar, Singeing method: through burning, Vehicle speed: 120 m / min; Medium-temperature desulfurization and bleaching: Caustic soda: 11g / L, hydrogen peroxide: 25g / L, refining agent FORYL MAG-L: 30g / L, cold pile agent BF1631: 6g / L, working parameters: steam box temperature is 75℃, and the stacking time is 40min.

[0024] Tentation: Polyester brightener EVB: 5g / L, cotton brightener BLH: 20g / L, wrinkle-free resin EFR-3: 120g / L, catalyst 531: 48g / L, resin synergist MNN-7: 20g / L, fluorine-free waterproofing agent R3: 80g / L, tenter frame drying oven temperature: 170℃, time: 60s.

[0025] Comparative Example 1-1 The difference from Example 1 is that the stretching process is changed to: polyester whitening - cotton whitening - wrinkle-free - baking - baking and washing - stretching, specifically: Polyester whitening agent: EVB: 5g / L, tenter frame drying room temperature: 180℃, time: 30s.

[0026] Cotton whitening: BLH: 20g / L, steam oven temperature: 98℃, sequentially through 8 water washing tanks to remove surface dye from the fabric, water washing temperature 50℃, the 6th and 7th water washing tanks contain citric acid, acid neutralization pH: 6, the remaining water washing tanks contain pure water.

[0027] Wrinkle-free: Wrinkle-free resin EFR-3: 120g / L, catalyst 531: 48g / L, resin synergist MNN-7: 20g / L, tenter frame drying room temperature is 110℃, time is 25s.

[0028] Baking: The oven temperature is 150℃ and the time is 120s.

[0029] Baking and washing: The material tank is filled with pure water. The fabric passes through 8 washing tanks in sequence to remove residual auxiliaries on the fabric surface. The washing temperature is 50℃. The 6th and 7th washing tanks contain citric acid, and the pH is neutralized to 6. The remaining washing tanks are filled with pure water.

[0030] Tentation: Fluorine-free waterproofing agent R3: 80g / L, tenter frame drying oven temperature: 170℃, time: 60s.

[0031] Comparative Examples 1-2 The difference from Example 1 is that the tenter frame does not use polyester brightener EVB.

[0032] Comparative Examples 1-3 The difference from Example 1 is that the cotton brightener BLH is not used in the stretching process.

[0033] Comparative Examples 1-4 The difference from Example 1 is that the stretching does not use the non-iron resin EFR-3 or catalyst 531.

[0034] Comparative Examples 1-5 The difference from Example 1 is that the stretching does not use resin synergist MNN-7, but uses silicone oil softener RAYSOFT SMI-62 at the same concentration as MNN-7.

[0035] Comparative Examples 1-6 The difference from Example 1 is that the tenter frame does not use fluorine-free waterproofing agent R3.

[0036] Comparative Examples 1-7 The difference from Example 1 is that the medium-temperature desizing, boiling, and bleaching process has been changed to a conventional desizing-boiling-bleaching flow and technology, specifically: Desizing: Desizing enzyme OPT-280: 3g / L, penetrant WA-M: 2g / L, refining enzyme 601-L: 4g / L; Desizing working parameters: steaming box temperature 100℃, fabric stacking time 5min.

[0037] Boiling: Caustic soda: 15g / L, refining agent CRC: 8g / L, penetrant WA-M: 6g / L, chelating agent SQ-A: 2g / L; Boiling parameters: steaming box temperature 100℃, stacking time 10min.

[0038] Bleaching: Hydrogen peroxide: 2g / L, caustic soda: 2g / L, penetrant WA-M: 6g / L; Bleaching working parameters: temperature 102℃, time 10min.

[0039] Comparative Examples 1-8 The difference from Example 1 is that the medium-temperature boiling and bleaching does not use the refining agent FORYL MAG-L.

[0040] Comparative Examples 1-9 The difference from Example 1 is that the medium-temperature boiling and bleaching process does not use the cold composting agent BF1631.

[0041] The fabrics obtained from Example 1 and Comparative Examples 1-1 to 1-9 were tested for wrinkle resistance, whiteness, tensile strength, water resistance, hand feel, appearance quality, and processing cycle. The results are shown in Table 1.

[0042] Table 1

[0043] The wrinkle-free property test method in Table 1 is the AATCC 124-2014 standard test method, which involves 5 washes and drying; the tensile strength test method is the ASTM D5034-2009 standard test method; the water resistance test method is the AATCC 22-2010 standard test method; the feel evaluation is conducted by professional touch, with more stars indicating a softer feel; the appearance quality evaluation method is a four-point scoring system for appearance defects. Compared with the traditional long-process technology of Comparative Example 1-1, the processing method used in Example 1 results in less strength loss, better hand feel, and comparable whiteness, wrinkle resistance, and waterproofing. Comparative Examples 1-2 and 1-3 use a single type of whitening agent, resulting in low fabric whiteness. Comparative Example 1-4 does not use a resin catalyst; although the fabric has a good hand feel and high strength, its wrinkle resistance is poor. Comparative Example 1-5 does not use a resin synergist but uses a silicone oil softener, which affects the fabric's wrinkle resistance, strength, and hand feel, and the silicone oil softener also affects the waterproofing effect. Comparative Example 1-6 does not use the fluorine-free waterproofing agent R3, resulting in a poor fabric hand feel and no waterproofing effect. Comparative Example 1-7 has a long processing flow, and the high-temperature pretreatment fabric stacking causes appearance problems and downgrades the grade. Comparative Example 1-8 does not use a special refining agent; the rapid reaction of caustic soda and hydrogen peroxide damages the fabric surface, affecting strength and appearance quality. Comparative Example 1-9 does not use a cold stacking agent; metal ions cannot be effectively removed, affecting the color development of the whitening agent, resulting in strength loss and uneven whiteness. In summary, this embodiment achieves the whiteness and wrinkle-free properties of traditional long-process manufacturing, while also exhibiting low strength reduction, good hand feel, and waterproof functionality. The synergistic effect of the additives results in a high-whiteness, wrinkle-free, environmentally friendly, and waterproof fabric.

[0044] Example 2 Fabric specifications: T / C45*T / C45*130*80*60 / 61, weave pattern: 3 / 1 twill, composition: 35% cotton, 65% polyester, processing steps are as follows: Singeing: Flame intensity: 16 mBar, Singeing method: through burning, Vehicle speed: 120 m / min; Medium-temperature desulfurization and bleaching: Caustic soda: 8g / L, hydrogen peroxide: 20g / L, refining agent FORYL MAG-L: 28g / L, cold pile agent BF1631: 10g / L, working parameters: steam box temperature is 75℃, and the stacking time is 40min.

[0045] Tentation: Polyester brightener EVB: 8g / L, cotton brightener BLH: 15g / L, wrinkle-free resin EFR-3: 100g / L, catalyst 531: 20g / L, resin synergist MNN-7: 20g / L, fluorine-free waterproofing agent R3: 60g / L, tenter frame drying oven temperature is 180℃, time is 40s.

[0046] Comparative Example 2-1 The difference from Example 2 is that the stretching process is changed to polyester whitening - cotton whitening - wrinkle-free - baking - baking and washing - stretching, specifically: Polyester whitening agent: EVB: 8g / L, tenter frame drying room temperature: 180℃, time: 30s.

[0047] Cotton whitening agent BLH: 15g / L, steaming oven temperature: 98℃, sequentially through 8 water washing tanks to remove surface dye from the fabric, water washing temperature 50℃, the 6th and 7th water washing tanks contain citric acid, acid neutralization pH: 6, the remaining water washing tanks are pure water.

[0048] Wrinkle-free: Wrinkle-free resin EFR-3: 100g / L, catalyst 531: 20g / L, resin synergist MNN-7: 20g / L, tenter frame drying room temperature is 110℃, time is 25s.

[0049] Baking: The oven temperature is 150℃ and the time is 120s.

[0050] Baking and washing: The material tank is filled with pure water. The fabric passes through 8 washing tanks in sequence to remove residual auxiliaries on the fabric surface. The washing temperature is 50℃. The 6th and 7th washing tanks contain citric acid, and the pH is neutralized to 6. The remaining washing tanks are filled with pure water.

[0051] Tentation: Fluorine-free waterproofing agent R3: 60g / L, tenter frame drying oven temperature: 180℃, time: 40s.

[0052] Comparative Example 2-2 The difference from Example 2 is that the tenter frame does not use polyester brightener EVB.

[0053] Comparative Examples 2-3 The difference from Example 2 is that the cotton brightener BLH is not used in the stretching process.

[0054] Comparative Examples 2-4 The difference from Example 2 is that the stretching does not use the non-iron resin EFR-3 or catalyst 531.

[0055] Comparative Examples 2-5 The difference from Example 2 is that the stretching does not use resin synergist MNN-7, but uses silicone oil softener RAYSOFT SMI-62 at the same concentration as MNN-7.

[0056] Comparative Examples 2-6 The difference from Example 2 is that the stretching does not use fluorine-free waterproofing agent R3.

[0057] Comparative Examples 2-7 The difference from Example 2 is that the medium-temperature desizing, boiling, and bleaching is replaced with conventional desizing-boiling-bleaching, specifically: Desizing: Desizing enzyme OPT-280: 3g / L, penetrant WA-M: 2g / L, refining enzyme 601-L: 4g / L; Desizing working parameters: steaming box temperature 100℃, fabric stacking time 5min.

[0058] Boiling: Caustic soda: 15g / L, refining agent CRC: 8g / L, penetrant WA-M: 6g / L, chelating agent SQ-A: 2g / L; Boiling parameters: steaming box temperature 100℃, stacking time 10min.

[0059] Bleaching: Hydrogen peroxide: 2g / L, caustic soda: 2g / L, penetrant WA-M: 6g / L; Bleaching working parameters: temperature 102℃, time 10min.

[0060] Comparative Examples 2-8 The difference from Example 2 is that the medium-temperature boiling and bleaching does not use the refining agent FORYL MAG-L.

[0061] Comparative Examples 2-9 The difference from Example 2 is that the medium-temperature boiling and bleaching process does not use the cold composting agent BF1631.

[0062] The fabrics obtained in Example 2 and Comparative Examples 2-1 to 2-9 were tested for wrinkle resistance, whiteness, tensile strength, water resistance, hand feel, appearance quality, and processing cycle. The results are shown in Table 2.

[0063] Table 2

[0064] Table 2 shows the following test methods: Wrinkle resistance test method (AATCC 124-2014 standard test method, 5 washes and dries); Tensile strength test method (ASTM D5034-2009 standard test method); Water resistance test method (AATCC 22-2010 standard test method); Hand feel evaluation is conducted by professional touch, with more stars indicating a softer feel; Appearance quality evaluation method is a four-point scoring system for appearance defects. Compared with the traditional long-process technology of Comparative Example 2-1, the processing method used in Example 2 results in less strength loss, better hand feel, and comparable whiteness, wrinkle resistance, and waterproofing. Comparative Examples 2-2 and 2-3 use a single type of whitening agent, resulting in low fabric whiteness. Comparative Example 2-4 does not use a resin catalyst; although the fabric has a good hand feel and high strength, its wrinkle resistance is poor. Comparative Example 2-5 does not use a resin synergist but uses a silicone oil softener, which affects the fabric's wrinkle resistance, strength, and hand feel, and the silicone oil softener also affects the waterproofing effect. Comparative Example 2-6 does not use the fluorine-free waterproofing agent R3, resulting in a poor fabric hand feel and no waterproofing effect. Comparative Example 2-7 has a long processing flow, and the high-temperature pretreatment and fabric stacking cause appearance problems and downgrade the grade. Comparative Example 2-8 does not use a special refining agent; the rapid reaction of caustic soda and hydrogen peroxide damages the fabric surface, affecting strength and appearance quality. Comparative Example 2-9 does not use a cold stacking agent; metal ions cannot be effectively removed, and iron ions react rapidly with caustic soda and hydrogen peroxide, damaging surrounding fibers and forming holes. In summary, this embodiment achieves the whiteness and wrinkle-free properties of traditional long-process manufacturing, while also exhibiting low strength reduction, good hand feel, and waterproof functionality. The synergistic effect of the additives results in a high-whiteness, wrinkle-free, environmentally friendly, and waterproof fabric.

[0065] Example 3 Fabric specifications: T / C30*P150D(SPANDEX40D)*130*70*53 / 54, weave pattern: 2 / 1 twill, composition: 75% polyester, 22% cotton, 3% spandex, processing steps are as follows (weft yarns do not need to be singed): Medium-temperature desulfurization and bleaching: Caustic soda: 8g / L, hydrogen peroxide: 20g / L, refining agent FORYL MAG-L: 28g / L, cold pile agent BF1631: 5g / L, working parameters: steam box temperature is 75℃, and the stacking time is 40min.

[0066] Tentator setting: Polyester brightener EVB: 10g / L, cotton brightener BLH: 10g / L, wrinkle-free resin EFR-3: 60g / L, catalyst 531: 18g / L, resin synergist MNN-7: 10g / L, fluorine-free waterproofing agent R3: 90g / L. Tentator drying oven temperature: 200℃, time: 30s.

[0067] Comparative Example 3-1 The difference from Example 3 is that the stretching process is changed to: polyester whitening - cotton whitening - wrinkle-free - baking - baking and washing - stretching.

[0068] Polyester whitening agent: EVB: 10g / L, tenter frame drying room temperature: 180℃, time: 30s.

[0069] Cotton whitening agent BLH: 10g / L, steaming oven temperature: 98℃, sequentially through 8 water washing tanks to remove surface dye from the fabric, water washing temperature 50℃, the 6th and 7th water washing tanks contain citric acid, acid neutralization pH: 6, the remaining water washing tanks are pure water.

[0070] Wrinkle-free: Wrinkle-free resin EFR-3: 60g / L, catalyst 531: 18g / L, resin synergist MNN-7: 10g / L, tenter frame drying room temperature: 110℃, time: 25s.

[0071] Baking: The oven temperature is 150℃ and the time is 120s.

[0072] Baking and washing: The material tank is filled with pure water. The fabric passes through 8 washing tanks in sequence to remove residual auxiliaries on the fabric surface. The washing temperature is 50℃. The 6th and 7th washing tanks contain citric acid, and the pH is neutralized to 6. The remaining washing tanks are filled with pure water.

[0073] Tentation: Fluorine-free waterproofing agent R3: 90g / L, tenter frame drying oven temperature: 170℃, time: 60s.

[0074] Comparative Example 3-2 The difference from Example 3 is that the tenter frame does not use polyester brightener EVB.

[0075] Comparative Example 3-3 The difference from Example 3 is that the cotton brightener BLH is not used in the stretching process.

[0076] Comparative Examples 3-4 The difference from Example 3 is that the stretching does not use the non-iron resin EFR-3 or catalyst 531.

[0077] Comparative Examples 3-5 The difference from Example 3 is that the stretching does not use resin synergist MNN-7, but uses silicone oil softener RAYSOFT SMI-62 at the same concentration as MNN-7.

[0078] Comparative Examples 3-6 The difference from Example 3 is that the tenter frame does not use fluorine-free waterproofing agent R3.

[0079] Comparative Examples 3-7 The difference from Example 3 is that the medium-temperature desizing and bleaching is replaced with conventional desizing-boiling-bleaching, specifically: Desizing: Desizing enzyme OPT-280: 3g / L, penetrant WA-M: 2g / L, refining enzyme 601-L: 4g / L; Desizing working parameters: steaming box temperature 100℃, fabric stacking time 5min.

[0080] Boiling: Caustic soda: 15g / L, refining agent CRC: 8g / L, penetrant WA-M: 6g / L, chelating agent SQ-A: 2g / L; Boiling parameters: steaming box temperature 100℃, stacking time 10min.

[0081] Bleaching: Hydrogen peroxide: 2g / L, caustic soda: 2g / L, penetrant WA-M: 6g / L; Bleaching working parameters: temperature 102℃, time 10min.

[0082] Comparative Examples 3-8 The difference from Example 3 is that the medium-temperature boiling and bleaching does not use the refining agent FORYL MAG-L.

[0083] Comparative Examples 3-9 The difference from Example 3 is that the medium-temperature boiling and bleaching process does not use the cold composting agent BF1631.

[0084] The fabrics obtained in Example 3 and Comparative Examples 3-1 to 3-9 were tested for wrinkle resistance, whiteness, strength, water resistance, hand feel, appearance quality, and processing cycle. The results are shown in Table 3.

[0085] Table 3

[0086] Table 3 shows the following test methods: Wrinkle-free test method: AATCC 124-2014 standard test method (5 washes and dries); Tensile strength test method: ASTM D5034-2009 standard test method; Water resistance test method: AATCC 22-2010 standard test method; Hand feel evaluation: professional touch test, more stars indicate a softer feel; Appearance quality evaluation method: four-point scoring system for appearance defects. Compared with the traditional long-process technology of Comparative Example 3-1, the processing method used in Example 3 results in less strength loss, better hand feel, and comparable whiteness, wrinkle resistance, and waterproofing. Comparative Examples 3-2 and 3-3 use only one type of whitening agent, resulting in low fabric whiteness. Comparative Example 3-4 does not use a resin catalyst; although the fabric has a good hand feel and high strength, its wrinkle resistance is poor. Comparative Example 3-5 does not use a resin synergist but uses a silicone oil softener, which affects the fabric's wrinkle resistance, strength, and hand feel, and the silicone oil softener also affects the waterproofing effect. Comparative Example 3-6 does not use the fluorine-free waterproofing agent R3, resulting in a poor fabric hand feel and no waterproofing effect. Comparative Example 3-7 has a long processing flow, and the high-temperature pretreatment and fabric stacking cause appearance problems and downgrade the grade. Comparative Example 3-8 does not use a special refining agent; the rapid reaction of caustic soda and hydrogen peroxide damages the fabric surface, affecting strength and appearance quality. Comparative Example 3-9 does not use a cold stacking agent; metal ions cannot be effectively removed, affecting the color development of the whitening agent, resulting in strength loss and uneven whiteness. In summary, this embodiment achieves the whiteness and wrinkle-free properties of traditional long-process manufacturing, while also exhibiting low strength reduction, good hand feel, and waterproof functionality. The synergistic effect of the additives results in a high-whiteness, wrinkle-free, environmentally friendly, and waterproof fabric.

Claims

1. A high-whiteness, wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric processing technology with an ultra-short processing flow, characterized in that: The process includes the following steps: the polyester-cotton fabric is produced by medium-temperature annealing, scouring and bleaching → stretching process; The medium-temperature descaling and bleaching process parameters are as follows: the process is carried out in the equipment steaming chamber, using additives including 6~12g / L caustic soda, 15~25g / L hydrogen peroxide, 20~30g / L refining agent, and 5-10g / L cold composting agent. The steaming chamber temperature is 65~75℃, and the time is 30~40min. The tenter frame process parameters are as follows: the process is carried out in a tenter frame, using additives including 5~10g / L polyester brightener, 10~20g / L cotton brightener, 40~120g / L wrinkle-free resin solution, 10~20g / L resin synergist, and 50~90g / L fluorine-free waterproofing agent. The tenter frame drying chamber temperature is 170~200℃, and the time is 30~60s.

2. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 1, is characterized in that: The polyester-cotton fabric is produced by a process of singeing, medium-temperature annealing and bleaching, and stretching.

3. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 1 or 2, characterized in that: The refining agent is FORYL MAG-L, and the cold reactor agent is BF1631.

4. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 3, characterized in that: The caustic soda is 48°Be.

5. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 1 or 2, characterized in that: The non-ironing resin solution contains non-ironing resin and a catalyst, with a mass percentage of 60-80%:20-40% for the non-ironing resin and the catalyst. The non-ironing resin is EFR-3, and the catalyst is 531.

6. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 5, characterized in that: The polyester brightener is EVB, the cotton brightener is BLH, the resin synergist is MNN-7, and the fluorine-free waterproofing agent is R3.

7. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 2, is characterized in that... In the singeing process described above: flame intensity: 15~17mBar, singeing method: through burning, machine speed: 110~130m / min.

8. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 1 or 2, characterized in that: The raw material to be processed is polyester-cotton blended fabric or polyester-cotton blended fabric.

9. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 1 or 2, characterized in that: The medium-temperature desizing, scouring and bleaching process is a shortened process that combines desizing, scouring and bleaching into one.

10. The ultra-short processing technology for high-whiteness, high-wrinkle-free, environmentally friendly, and waterproof polyester-cotton fabric according to claim 1 or 2, characterized in that: The stretching process described is a shortening process that combines four functions: polyester whitening, cotton whitening, wrinkle-free, and waterproofing.

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