Production method for improving the wash-and-wear performance of cellulose fiber yarn-dyed fabrics

Abstract

The present invention belongs to the technical field of fabric production, and specifically relates to a production method for improving the wash-and-wear property of cellulose fiber yarn-dyed fabrics. It includes the following processes: S1. Yarn dyeing and crosslinking in the same bath finishing: (1) Pretreatment: The cellulose fiber loose package yarn is subjected to oxygen bleaching in a package yarn dyeing machine; (2) Dyeing and crosslinking: By means of dip dyeing, the pretreated package yarn is subjected to dyeing and crosslinking in the same bath finishing in the package yarn dyeing machine; (3) Post-treatment: The dyed and crosslinked package yarn is washed with water, soaped, subjected to color fixation and softening treatment, and then dried to obtain the finished yarn; S2. Weaving: The finished yarns are used as warp yarns and weft yarns respectively on a loom to weave into yarn-dyed fabrics; S3. Fabric wash-and-wear finishing: The yarn-dyed fabrics are subjected to dry crosslinking treatment or damp crosslinking treatment. Through two-step crosslinking of yarn dyeing and crosslinking in the same bath finishing and fabric wash-and-wear finishing, the fabric does not reduce its strength, and the wash-and-wear property can be improved by 0.2 to 0.3 grades.

Description

Technical Field

[0001] The present invention belongs to the technical field of fabric production, and particularly relates to a production method for improving the wash-and-wear property of cellulose fiber yarn-dyed fabrics. Background Art

[0002] Cellulose fibers are easily obtained and can be biodegradable after use. Their fabrics have good wearing properties and are deeply favored by consumers. However, such fabrics are prone to wrinkling during wearing and after washing, and their appearance is not very crisp, so ironing treatment is required. Therefore, wash-and-wear finishing has become a very important link in the post-finishing processing of cellulose fiber fabrics.

[0003] Resin finishing is the most important and commonly used method for cellulose fiber fabrics to achieve wash-and-wear properties. After the resin finishing agent is treated on the fabric, resin particles with multiple functional groups can diffuse into the amorphous region of the fiber, and condense to form a network structure and deposit in the fiber under reaction conditions, establishing hydrogen bonds with fiber molecules to entangle the fiber molecules with each other, restricting the relative movement of molecular chains, and making the fabric have better wrinkle resistance; the resin finishing agent can self-condense, but may also react with the hydroxyl groups on cellulose to form covalent crosslinks between cellulose macromolecules, making cellulose molecules not easily deformed and quickly returning to their original positions after deformation, thereby improving the wrinkle resistance and wash-and-wear property of the fabric. The amount of amorphous region in the fiber determines the amount of resin required, and the quality of wrinkle prevention and wash-and-wear property is related to the number of crosslinks formed in the fiber macromolecules. The more crosslinks there are, the better the wrinkle prevention and wash-and-wear property of the fabric, but the strength of the fabric will decrease due to excessive crosslinking. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a production method for improving the wash-and-wear property of cellulose fiber yarn-dyed fabrics, which improves the wrinkle resistance and wash-and-wear property of the fabric without affecting the fabric strength through two-step crosslinking of yarn dyeing crosslinking and fabric wash-and-wear finishing.

[0005] The production method for improving the wash-and-wear property of cellulose fiber yarn-dyed fabrics according to the present invention includes the following processes:

[0006] S1. Yarn dyeing crosslinking and same-bath finishing:

[0007] (1) Pretreatment: The cellulose fiber loose package yarn is subjected to oxygen bleaching in a package yarn dyeing machine.

[0008] (2) Dyeing crosslinking: By using the dip-dyeing method, the pretreated package yarn is subjected to dyeing crosslinking and same-bath finishing in a package yarn dyeing machine.

[0009] (3) Post-treatment: The dyed and crosslinked package yarn is washed with water, soaped, and subjected to color fixation and softening treatment, and then dried to obtain the finished yarn.

[0010] S2. Weaving: The dyed and crosslinked yarns are warped and sized and then woven on a loom to form a figured fabric.

[0011] S3. Fabric non-iron finishing: The figured fabric is subjected to dry crosslinking treatment or wet crosslinking treatment;

[0012] The small molecule crosslinking agent used in the crosslinking described in step (2) is a polyazine compound.

[0013] The equipment for oxygen bleaching, dyeing crosslinking and fixing softening described in step S1 is a package dyeing machine, and the drying equipment is a radio frequency dryer. The weight of each package of yarn is 0.5 - 1 kg, and the density of the package of yarn is 0.36 - 0.38 g / cm 3 。

[0014] The oxygen bleaching process described in step S1 is as follows: Chelating agent SQ - B: 0.1 - 0.5 g / L, scouring agent SA - E: 1 - 4 g / L, caustic soda: 1 - 4 g / L, hydrogen peroxide: 0.1 - 10 g / L (concentration 27.5 wt.%), temperature 90 - 110 °C, time 10 - 60 min.

[0015] The dyeing crosslinking one - bath finishing process described in step S1 is as follows: The dyes are medium - temperature or high - temperature reactive dyes. The dye concentration is 0.1 - 8% of the weight of the package of yarn, the dosage of the small molecule crosslinking agent is 3 - 4% of the weight of the package of yarn, sodium sulfate: 10 - 80 g / L, soda ash: 10 - 25 g / L, bath ratio 1:6 - 1:12.

[0016] The process flow of the dry crosslinking treatment process described in step S3 includes singeing → desizing → mercerizing → (liquid ammonia) → (water washing) → non - iron → baking → (water washing) → (stentering) → pre - shrinking. The process flow of the dry crosslinking treatment process may also include the processes in the above brackets.

[0017] The process flow of the wet crosslinking treatment process described in step S3 includes singeing → desizing → mercerizing → (liquid ammonia) → (water washing) → pre - softening → wet crosslinking → water washing → stentering → pre - shrinking. The process flow of the wet crosslinking treatment process may also include the processes in the above brackets.

[0018] The initial dyeing temperature of the medium - temperature reactive dye is 50 °C. At 50 °C, after adding sodium sulfate to the dyeing machine for 20 min, the dyes and the small molecule crosslinking agent are added linearly within 10 min, heated to 60 °C at a rate of 1 °C / min, held at 60 °C for 30 min, then soda ash is added linearly within 30 min, and the residual liquid is drained after holding for 40 min;

[0019] The initial dyeing temperature of the high-temperature reactive dye is 60°C. At 60°C, after adding sodium sulfate in the dyeing machine for 10 minutes, the dye and the small molecule cross-linking agent are added linearly within 10 minutes, heated to 90°C at a rate of 2°C / min, held for 30 minutes, and then sodium carbonate is added linearly within 30 minutes, and the residual liquid is drained after holding for 60 minutes.

[0020] The anti-wrinkle process of the dry cross-linking treatment process: Resin CR-E: 100 - 120 g / L, Catalyst CT-C: 30 - 36 g / L, Fiber protectant SF-P: 10 - 40 g / L, Formaldehyde scavenger FDS: 20 - 40 g / L, Softener SEH-02: 20 - 40 g / L, pH value of the finishing solution 3 - 5, Padding rate 60 - 70%, Drying temperature 100 - 110°C, Drying time 1 - 2 min; Curing process: Curing temperature 150 - 165°C, Curing time 1 - 3 min.

[0021] The wet cross-linking process of the wet cross-linking treatment process: Wet cross-linking resin CR-MA: 200 - 230 g / L, Catalyst LRMC: 100 - 115 g / L, Fiber protectant SF-P: 10 - 40 g / L, Padding rate 60 - 70%, Cloth leaving humidity 6 - 7%, Cloth leaving temperature 36 - 38°C, Constant temperature stacking time 12 - 24 h.

[0022] The padding of the dry cross-linking treatment process and the wet cross-linking treatment process described in step S3 is carried out on a stentering machine.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1) The yarn dyeing cross-linking and fabric anti-wrinkle finishing described in the present invention are two-step cross-linking. Compared with the one-step cross-linking of fabric anti-wrinkle finishing, the fabric strength does not decrease, and the anti-wrinkle property can be improved by 0.2 - 0.3 levels. For fabric varieties whose dry strength (dry strength refers to the maximum tensile force that fibers or fabrics can withstand without being wet) cannot be improved, improving the anti-wrinkle property by another 0.2 - 0.3 levels is an important breakthrough in solving the problem that it is difficult to improve the anti-wrinkle property in the industry, and it has very important significance;

[0025] 2) For the fabric after yarn dyeing cross-linking described in the present invention, the anti-wrinkle property of the fabric after wet cross-linking finishing is higher than that of the fabric after dry cross-linking finishing, which is a breakthrough solution for products pursuing high anti-wrinkle properties; Through the anti-wrinkle finishing after yarn dyeing cross-linking, the whitening phenomenon of the fabric after wearing or washing is improved. Specific Embodiments

[0026] The present invention will be further described below in conjunction with embodiments.

[0027] Unless otherwise specified, all raw materials used in the examples are commercially available.

[0028] The chelating agent SQ-B is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0029] The scouring agent SA-E is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0030] The soaping agent WO is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0031] The fixing agent FA-R is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0032] The softener LUA is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0033] The desizing enzyme DS-HT is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0034] The non-ironing resin CR-E is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0035] The catalyst CT-C for the permanent-ironing resin is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0036] The fiber protective agent SF-P is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0037] The formaldehyde scavenger FDS is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0038] The softener SEH-02 is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0039] The acid PH-X is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0040] The softener SMI-60 is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0041] The tide cross-linking resin CR-MA is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0042] The catalyst LRMC for tide cross-linking resin is a commercially available product of Zibo Lurui Fine Chemical Co., Ltd.

[0043] The softener FRD-5 is a commercially available product of Qingdao Ounosi Industry and Trade Co., Ltd.

[0044] The Reactive Red X-6BN is a commercially available product of Archroma Chemicals.

[0045] The Reactive Yellow X-4RN is a commercially available product of Archroma Chemicals.

[0046] The described reactive navy blue X-GN: a commercially available product from Archroma Chemicals.

[0047] The described reactive black TRBN: a commercially available product from Yorkshire Chemicals.

[0048] The described reactive red CDX-BT: a commercially available product from Yorkshire Chemicals.

[0049] The described reactive golden yellow CDX-RT: a commercially available product from Yorkshire Chemicals.

[0050] The described reactive blue CDX-LT: a commercially available product from Yorkshire Chemicals.

[0051] Example 1

[0052] The described production method for improving the wash-and-wear property of cellulose fiber yarn-dyed fabrics includes the following processes:

[0053] S1. Yarn dyeing and crosslinking in the same bath finishing:

[0054] (1) Pretreatment: Select pure cotton loose package yarn, with each package weighing 1 kg and a density of 0.38 g / cm 3 , and the yarn count is 40S / 1. Place the pure cotton loose package yarn in a package yarn dyeing machine for oxygen bleaching. The oxygen bleaching temperature is 105 °C, the treatment time is 40 min, the chelating agent SQ-B is 0.4 g / L, the scouring agent SA-E is 3 g / L, caustic soda is 3 g / L, and hydrogen peroxide (concentration 27.5 wt.%) is 8 g / L.

[0055] (2) Dyeing and crosslinking: Adopt the dipping method to carry out dyeing and crosslinking on the pretreated package yarn in the package yarn dyeing machine. The dyes used are medium-temperature reactive black TRBN and reactive red CDX-BT, and the dye concentrations are 7.0% and 1.0% of the weight of the package yarn respectively. The dosage of the small molecule crosslinking agent 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine is 3% of the weight of the package yarn, sodium sulfate is 80 g / L, soda ash is 25 g / L, and the bath ratio is 1:10; at 50 °C, add sodium sulfate to the main cylinder of the dyeing machine for 20 min, then add the dyes and the small molecule crosslinking agent in a uniform speed within 10 min, heat up to 60 °C at a rate of 1 °C / min, keep warm for 30 min, then add soda ash in a uniform speed within 30 min, and drain the residual liquid after keeping warm for 40 min.

[0056] (3) Post-treatment: The dyed and crosslinked cheese yarn is washed, soaped, and fixed and softened in a cheese yarn dyeing machine and then dried to obtain the finished yarn. The washing temperature is 60°C and the time is 5 minutes; the soaping temperature is 98°C, the soaping time is 15 minutes each time, and the number of soaping times is 3 times. The dosage of soaping agent WO for the first soaping is 2 g / L, the dosage of soaping agent WO for the second soaping is 1 g / L, and the dosage of soaping agent WO for the third soaping is 1 g / L; the fixing and softening are carried out in one bath, the treatment temperature is 55°C, the time is 21 minutes, the dosage of fixing agent FA-R is 3.5% of the weight of the cheese yarn, and the dosage of softening agent LUA is 4% of the weight of the cheese yarn; drying is carried out with a radio frequency dryer.

[0057] S2. Weaving: The dyed and crosslinked yarn is warped, sized, and then woven on a loom to form a figured fabric. The warp density is 140 ends per inch, the weft density is 90 picks per inch, and the fabric structure is plain weave.

[0058] S3. Dry crosslinking treatment of the fabric: The process flow is singeing → desizing → mercerizing → liquid ammonia treatment → washing → wash-and-wear → baking → stentering → pre-shrinking.

[0059] Singeing and desizing: The grey fabric of the figured fabric is subjected to singeing and desizing treatment on a singeing and desizing combined machine. The singeing flame intensity is 14 mbar, the burner position is cross-singeing, the machine speed is 100 m / min, and the dosage of desizing enzyme DS-HT is 18 g / L.

[0060] Mercerizing: The fabric after singeing and desizing treatment is mercerized on a mercerizing machine. The alkali concentration is 21 Baumé, and the machine speed is 75 m / min.

[0061] Liquid ammonia treatment: The fabric after mercerizing is subjected to liquid ammonia finishing on a liquid ammonia machine. The machine speed is 45 m / min, and the washing temperature is normal temperature.

[0062] Washing: The fabric after liquid ammonia treatment is padded with neutralizing acid PH-X 1 g / L in a washing machine to neutralize the residual alkali, and the pH value after washing is 6.

[0063] Wash-and-wear: On a stentering machine, the fabric after washing is padded with a resin finishing solution, and then dried and baked. The dosages of each auxiliary agent in the resin finishing solution are as follows: wash-and-wear resin CR-E 110 g / L, catalyst CT-C for wash-and-wear resin 33 g / L, fiber protector SF-P 30 / L, formaldehyde scavenger FDS 25 g / L, softening agent SEH-02: 30 g / L; the pH value of the finishing solution is 4, the liquor pick-up rate is 65%, the drying temperature is 110°C, and the drying time is 1 minute.

[0064] Baking: The fabric after wash-and-wear treatment is baked on a baking machine. The baking temperature is 155°C, and the baking time is 2 minutes.

[0065] Stentering: After baking, the fabric is padded with neutralizing acid PH-X 2 g / L and softener SMI-60: 20 g / L on a stentering machine and dried at 110°C.

[0066] Preshrinking: After stentering, the fabric is subjected to preshrinking finishing on a preshrinking machine.

[0067] Example 2

[0068] The production method for improving the wash-and-wear property of cellulose fiber yarn-dyed fabrics includes the following processes:

[0069] S1. Yarn dyeing and crosslinking in the same bath finishing:

[0070] (1) Pretreatment: Select pure cotton loose package yarn, with each package weighing 1 kg and a density of 0.38 g / cm 3 , and the yarn count is 40S / 1. Place the pure cotton loose package yarn in a package yarn dyeing machine for oxygen bleaching. The oxygen bleaching temperature is 105°C, the treatment time is 40 min, the chelating agent SQ-B is 0.4 g / L, the scouring agent SA-E is 3 g / L, caustic soda is 3 g / L, and hydrogen peroxide (concentration 27.5 wt.%) is 8 g / L.

[0071] (2) Dyeing and crosslinking: Using the exhaustion method, dye and crosslink the pretreated package yarn in a package yarn dyeing machine. The dyes used are medium-temperature reactive black TRBN and reactive red CDX-BT, and the dye concentrations are 7.0% and 1.0% of the weight of the package yarn respectively. The dosage of the small molecule crosslinking agent 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine is 3% of the weight of the package yarn, sodium sulfate is 80 g / L, sodium carbonate is 25 g / L, and the bath ratio is 1:10; at 50°C, add sodium sulfate to the main cylinder of the dyeing machine for 20 min, then add the dyes and the small molecule crosslinking agent in a uniform speed within 10 min, heat up to 60°C at a rate of 1°C / min, keep warm for 30 min, then add sodium carbonate in a uniform speed within 30 min, and drain the residual liquid after keeping warm for 40 min.

[0072] (3) Post-treatment: Wash, soaping and fixing and softening treatment the dyed and crosslinked package yarn in a package yarn dyeing machine and then dry to obtain the finished yarn. Among them, the washing temperature is 60°C and the time is 5 min; the soaping temperature is 98°C, and the soaping time for each time is 15 min, and the number of soaping times is 3 times. The dosage of the soaping agent WO for the first soaping is 2 g / L, for the second soaping is 1 g / L, and for the third soaping is 1 g / L; the fixing and softening are carried out in one bath, the treatment temperature is 55°C, the time is 21 min, the dosage of the fixing agent FA-R is 3.5% of the weight of the package yarn, and the dosage of the softening agent LUA is 4% of the weight of the package yarn; dry with a radio frequency dryer.

[0073] S2. Weaving: The dyed and crosslinked yarns are warped and sized, and then woven on a loom to form a yarn-dyed fabric. The warp density is 140 threads per inch, the weft density is 90 threads per inch, and the fabric structure is plain weave.

[0074] S3. Fabric wet crosslinking treatment: The process flow is singeing → desizing → mercerizing → liquid ammonia treatment → pre-softening → wet crosslinking → wet crosslinking washing → stentering → preshrinking.

[0075] Singeing and desizing: The grey yarn-dyed fabric is singed and desized on a combined singeing and desizing machine. The singeing flame intensity is 14 mbar, the burner position is cut singeing, the machine speed is 100 m / min, and the dosage of desizing enzyme DS-HT is 18 g / L.

[0076] Mercerizing: The fabric after singeing and desizing is mercerized on a mercerizing machine. The alkali concentration is 21 Baumé, and the machine speed is 75 m / min.

[0077] Liquid ammonia treatment: The fabric after mercerizing is treated with liquid ammonia on a liquid ammonia machine. The machine speed is 45 m / min, and the water washing temperature is normal temperature.

[0078] Pre-softening: On a stentering machine, the fabric after liquid ammonia treatment is padded with softener FRD-5 at a dosage of 20 g / L. The machine speed is 70 m / min, and the drying temperature is 120 °C.

[0079] Wet crosslinking: The fabric after pre-softening is padded with a wet crosslinking resin finishing solution on a stentering machine. The dosages of various auxiliaries in the finishing solution are as follows: wet crosslinking resin CR-MA 220 g / L, catalyst LRMC for wet crosslinking resin 110 g / L, fiber protector SF-P 35 g / L, padding rate 65%, fabric moisture content after padding 6.5%, fabric temperature after padding 36 °C. After padding and winding, the fabric is piled and reacted in a constant temperature environment at 36 °C for 18 hours.

[0080] Wet crosslinking washing: The fabric after wet crosslinking and winding is washed on a washing machine. The washing temperature is 70 °C, the machine speed is 50 m / min, and the dosage of soda ash is 20 g / L.

[0081] Stentering: The fabric after wet crosslinking washing is padded with a softener to improve the hand feeling on a stentering machine. The dosage of softener SMI-60 is 5 g / L, and the drying temperature is 110 °C.

[0082] Preshrinking: The fabric after stentering and softening finishing is preshrunk on a preshrinking machine.

[0083] Example 3

[0084] The production method for improving the wash-and-wear performance of cellulose fiber yarn-dyed fabrics includes the following processes:

[0085] S1. Yarn dyeing and crosslinking in the same bath finishing:

[0086] (1)Pretreatment: Select pure cotton loose package yarn. The weight of each loose package yarn is 0.8 kg, and the density is 0.37 g / cm 3 , and the yarn count is 60S / 2. Place the pure cotton loose package yarn in a package yarn dyeing machine for oxygen bleaching. The oxygen bleaching temperature is 110 °C, the treatment time is 60 min, the chelating agent SQ-B is 0.5 g / L, the scouring agent SA-E is 4 g / L, caustic soda is 4 g / L, and hydrogen peroxide (concentration 27.5 wt.%) is 10 g / L.

[0087] (2)Dyeing and crosslinking: Adopt the dipping method to carry out dyeing and crosslinking on the pretreated package yarn in the package yarn dyeing machine. The dyes used are high-temperature reactive red X-6BN, reactive yellow X-4RN, and reactive navy blue X-GN. The dye concentrations are 1.0%, 0.8%, and 2.0% of the weight of the package yarn respectively. The dosage of the small molecule crosslinking agent 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine is 3.5% of the weight of the package yarn, sodium sulfate is 70 g / L, soda ash is 20 g / L, and the bath ratio is 1:12; at 60 °C, add sodium sulfate to the main cylinder of the dyeing machine for 10 min, then add the dyes and the small molecule crosslinking agent in a uniform speed within 10 min, heat up to 90 °C at a rate of 2 °C / min, keep warm for 30 min, then add soda ash in a uniform speed within 30 min, and drain the residual liquid after keeping warm for 60 min.

[0088] (3)Post-treatment: Wash, soaping, and fixing and softening the crosslinked package yarn in the package yarn dyeing machine and then dry it to obtain the finished yarn. The washing temperature is 60 °C and the time is 5 min; then carry out 3 times of soaping. The first soaping temperature is 105 °C, the soaping time is 15 min, and the dosage of the soaping agent WO is 2 g / L; the second and third soaping temperatures are 98 °C, and the soaping time for each time is 15 min, and the dosage of the soaping agent WO is 1 g / L; then carry out fixing and softening in one bath, the treatment temperature is 55 °C, the time is 21 min, the dosage of the fixing agent FA-R is 3.5% of the weight of the package yarn, and the dosage of the softening agent LUA is 4% of the weight of the package yarn; finally, dry it with a radio frequency dryer.

[0089] S2. Weaving: The crosslinked yarn after dyeing is warped, sized and then woven. It is woven into a yarn-dyed fabric on a loom. The warp density is 104 ends per inch, the weft density is 76 picks per inch, and the fabric structure is plain weave.

[0090] S3. Dry crosslinking treatment of fabric: The process flow is singeing → desizing → mercerizing → wash-and-wear → curing → stentering → preshrinking.

[0091] Singeing and desizing: Singe and desize the grey fabric of the yarn-dyed fabric on a singeing and desizing combined machine. The singeing flame intensity is 14 mbar, the position of the burner is cut singeing, the vehicle speed is 85 m / min, and the dosage of the desizing enzyme DS-HT is 20 g / L.

[0092] Mercerization: After the singeing and scouring treatment, the fabric is mercerized on a mercerizing machine with an alkali concentration of 22 Baumé and a vehicle speed of 70 m / min.

[0093] Wrinkle-free: On a stentering machine, the mercerized fabric is padded with a resin finishing solution and then dried and baked. The dosages of each auxiliary agent in the resin finishing solution are as follows: wrinkle-free resin CR-E 120 g / L, catalyst CT-C for wrinkle-free resin 36 g / L, fiber protectant SF-P 40 / L, formaldehyde scavenger FDS 40 g / L, softener SEH-02: 40 g / L; the pH value of the finishing solution is 5, the padding rate is 60%, the drying temperature is 105 °C, and the drying time is 1.5 min.

[0094] Baking: The wrinkle-free fabric is baked on a baking machine at a baking temperature of 165 °C and a baking time of 1 min.

[0095] Stentering: The baked fabric is padded with acid PH-X 2 g / L and softener SMI-60: 20 g / L on a stentering machine and dried at 105 °C.

[0096] Preshrinking: The stenter-treated fabric is subjected to preshrinking finishing on a preshrinking machine.

[0097] Example 4

[0098] The production method for improving the wrinkle-free property of a yarn-dyed fabric made of cellulose fibers includes the following processes:

[0099] S1. Yarn dyeing and crosslinking in the same bath finishing:

[0100] (1) Pretreatment: Select pure cotton loose package yarn with an individual weight of 0.8 kg and a density of 0.37 g / cm 3 , and the yarn count is 60S / 2. Place the pure cotton loose package yarn in a package yarn dyeing machine for oxygen bleaching at an oxygen bleaching temperature of 110 °C, a treatment time of 60 min, chelating agent SQ-B 0.5 g / L, scouring agent SA-E 4 g / L, caustic soda 4 g / L, and hydrogen peroxide (concentration 27.5 wt.%) 10 g / L.

[0101] (2)Dyeing and crosslinking: Using the dip-dyeing method, the pretreated cheese yarn is dyed and crosslinked in a cheese yarn dyeing machine. The dyes used are high-temperature reactive red X-6BN, reactive yellow X-4RN, and reactive navy blue X-GN. The dye concentrations are 1.0%, 0.8%, and 2.0% of the weight of the cheese yarn respectively. The dosage of the small molecule crosslinking agent 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine is 3.5% of the weight of the cheese yarn. Sodium sulfate is 70 g / L, soda ash is 20 g / L, and the bath ratio is 1:12. At 60 °C, sodium sulfate is added to the main cylinder of the dyeing machine for 10 min, and then the dyes and the small molecule crosslinking agent are added in a uniform speed within 10 min. The temperature is raised to 90 °C at a rate of 2 °C / min, and after holding for 30 min, soda ash is added in a uniform speed within 30 min, and the residual liquid is drained after holding for 60 min.

[0102] (3)Post-treatment: The dyed and crosslinked cheese yarn is washed, soaped, and fixed and softened in a cheese yarn dyeing machine and then dried to obtain the finished yarn. The washing temperature is 60 °C and the time is 5 min. Then it is soaped 3 times. The first soaping temperature is 105 °C, the soaping time is 15 min, and the dosage of the soaping agent WO is 2 g / L. The second and third soaping temperatures are 98 °C, and the soaping time for each time is 15 min, and the dosage of the soaping agent WO is 1 g / L. Then the fixing and softening are carried out in one bath. The treatment temperature is 55 °C, the time is 21 min, the dosage of the fixing agent FA-R is 3.5% of the weight of the cheese yarn, and the dosage of the softening agent LUA is 4% of the weight of the cheese yarn. Finally, it is dried with a radio frequency dryer.

[0103] S2. Weaving: The dyed and crosslinked yarn is warped, sized, and then woven. It is woven into a figured fabric on a loom. The warp density is 104 picks per inch, the weft density is 76 picks per inch, and the fabric structure is plain weave.

[0104] S3. Fabric moisture crosslinking treatment: The process flow is singeing → desizing → mercerizing → liquid ammonia → pre-softening → moisture crosslinking → moisture crosslinking washing → stentering → preshrinking.

[0105] Singeing and desizing: The grey fabric of the figured fabric is singed and desized on a singeing and desizing combined machine. The singeing flame intensity is 14 mbar, the burner position is cross-singeing, the vehicle speed is 85 m / min, and the dosage of the desizing enzyme DS-HT is 20 g / L.

[0106] Mercerizing: The fabric after singeing and desizing treatment is mercerized on a mercerizing machine. The alkali concentration is 22 Baumé, and the vehicle speed is 70 m / min.

[0107] Liquid ammonia: The fabric after mercerizing is liquid ammonia finished on a liquid ammonia machine. The vehicle speed is 40 m / min, and the washing temperature is normal temperature.

[0108] Pre-softening: On the stentering machine, the fabric after liquid ammonia treatment is padded with softener FRD-5 at a concentration of 25 g / L, the machine speed is 65 m / min, and the drying temperature is 125 °C.

[0109] Moisture crosslinking: After pre-softening, the fabric is padded with a moisture crosslinking resin finishing solution on the stentering machine. The dosages of each auxiliary agent in the finishing solution are as follows: moisture crosslinking resin CR-MA 230 g / L, catalyst LRMC for moisture crosslinking resin 115 g / L, fiber protectant SF-P 40 g / L, liquor pickup rate 60%, fabric moisture content after padding 7%, fabric temperature after padding 38 °C. After the fabric is wound into a roll, it is stacked and reacted in a constant temperature environment of 38 °C for 24 hours.

[0110] Moisture crosslinking washing: The fabric wound into a roll after moisture crosslinking is washed on a washing machine. The washing temperature is 75 °C, the machine speed is 45 m / min, and soda ash is 20 g / L.

[0111] Stentering: After moisture crosslinking washing, the fabric is padded with a softener on the stentering machine to improve the hand feel. The dosage of softener SMI-60 is 10 g / L, and the drying temperature is 115 °C.

[0112] Pre-shrinking: After stentering and softening finishing, the fabric is subjected to pre-shrinking finishing on a pre-shrinking machine.

[0113] Example 5

[0114] The production method for improving the wash-and-wear performance of cellulose fiber yarn-dyed fabrics includes the following processes:

[0115] S1. Yarn dyeing and crosslinking in the same bath finishing:

[0116] (1) Pretreatment: Select Lyocell fiber loose package yarn. The weight of each loose package yarn is 0.5 kg, the density of the loose package yarn is 0.36 g / cm 3 , and the yarn count is 80S / 2. The pure cotton loose package yarn is placed in a package yarn dyeing machine for oxygen bleaching. The oxygen bleaching temperature is 90 °C, the treatment time is 10 min, chelating agent SQ-B 0.1 g / L, scouring agent SA-E 1 g / L, caustic soda 1 g / L, hydrogen peroxide (concentration 27.5 wt.%) 0.1 g / L.

[0117] (2) Dyeing and crosslinking: Using the dip-dyeing method, the pretreated cheese yarn is dyed and crosslinked in a cheese yarn dyeing machine. The dyes used are medium-temperature reactive red CDX-BT, reactive golden yellow CDX-RT, and reactive blue CDX-LT. The dye concentrations are 0.96%, 0.25%, and 0.516% of the weight of the cheese yarn respectively. The dosage of the small molecule crosslinking agent 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine is 4% of the weight of the cheese yarn, sodium sulfate is 10 g / L, soda ash is 10 g / L, and the bath ratio is 1:6.5. At 50 °C, sodium sulfate is added to the main cylinder of the dyeing machine for 20 min, then the dyes and the small molecule crosslinking agent are added in a uniform speed within 10 min, heated to 60 °C at a rate of 1 °C / min, kept at this temperature for 30 min, and then soda ash is added in a uniform speed within 30 min, and the residual liquid is drained after keeping at this temperature for 40 min.

[0118] (3) Post-treatment: The dyed and crosslinked cheese yarn is washed, soaped, and subjected to fixation and softening treatment in the cheese yarn dyeing machine and then dried to obtain the finished yarn. Among them, the washing temperature is 60 °C and the time is 5 min; the soaping temperature is 98 °C, the soaping time for each time is 15 min, and the number of soaping times is 3 times. The dosage of the soaping agent WO for the first soaping is 2 g / L, the dosage of the soaping agent WO for the second soaping is 1 g / L, and the dosage of the soaping agent WO for the third soaping is 1 g / L; the fixation and softening are carried out in one bath, the treatment temperature is 55 °C, the time is 21 min, the dosage of the fixing agent FA-R is 3.5% of the weight of the cheese yarn, and the dosage of the softening agent LUA is 4% of the weight of the cheese yarn; it is dried with a radio frequency dryer.

[0119] S2. Weaving: The dyed and crosslinked yarn is warped, sized, and then woven. A yarn-dyed fabric is woven on a loom. The warp density is 130 ends per inch, the weft density is 80 picks per inch, and the fabric structure is plain weave.

[0120] S3. Dry crosslinking treatment of the fabric: The process flow is singeing → desizing → mercerizing → wash-and-wear → baking → pre-shrinking.

[0121] Singeing and desizing: The grey fabric of the yarn-dyed fabric is subjected to singeing and desizing treatment on a singeing and desizing combined machine. The singeing flame intensity is 10 mbar, the burner position is cut singeing, the machine speed is 90 m / min, and the dosage of the desizing enzyme DS-HT is 15 g / L.

[0122] Mercerizing: The fabric after singeing and desizing treatment is mercerized on a mercerizing machine. The alkali concentration is 12 Baumé, and the machine speed is 70 m / min.

[0123] Non-iron treatment: On the stentering machine, the mercerized fabric is padded with a resin finishing solution, then dried and baked. The dosages of each auxiliary agent in the resin finishing solution are as follows: non-iron resin CR-E 100 g / L, catalyst CT-C for non-iron resin 30 g / L, fiber protector SF-P 10 / L, formaldehyde scavenger FDS 20 g / L, softener SEH-02: 20 / L; the pH value of the finishing solution is 3, the padding rate is 70%, the drying temperature is 100 °C, and the drying time is 2 min.

[0124] Baking: Bake the non-iron treated fabric on a baking machine at a baking temperature of 150 °C for 3 min.

[0125] Pre-shrinking: The stentered fabric is pre-shrunk on a pre-shrinking machine.

[0126] Example 6

[0127] The production method for improving the non-iron property of cellulose fiber yarn-dyed fabric includes the following processes:

[0128] S1. Yarn dyeing and crosslinking in the same bath finishing:

[0129] (1) Pretreatment: Select Lyocell fiber loose package yarn, the weight of each loose package yarn is 0.5 kg, the density of the loose package yarn is 0.36 g / cm 3 , and the yarn count is 80S / 2. Place the pure cotton loose package yarn in a package yarn dyeing machine for oxygen bleaching. The oxygen bleaching temperature is 90 °C, the treatment time is 10 min, chelating agent SQ-B 0.1 g / L, scouring agent SA-E 1 g / L, caustic soda 1 g / L, hydrogen peroxide (concentration 27.5 wt.%) 0.1 g / L.

[0130] (2) Dyeing and crosslinking: Adopt the dipping method to carry out dyeing and crosslinking on the pretreated package yarn in the package yarn dyeing machine. The dyes used are medium-temperature reactive red CDX-BT, reactive golden yellow CDX-RT, and reactive blue CDX-LT. The dye concentrations are 0.96%, 0.25%, and 0.516% of the weight of the package yarn respectively. The dosage of the small molecule crosslinking agent 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine is 4% of the weight of the package yarn, sodium sulfate 10 g / L, soda ash 10 g / L, and the bath ratio is 1:6.5; at 50 °C, add sodium sulfate to the main cylinder of the dyeing machine for 20 min, then add the dyes and the small molecule crosslinking agent in a uniform speed manner within 10 min, heat up to 60 °C at a rate of 1 °C / min, keep warm for 30 min, then add soda ash in a uniform speed manner within 30 min, and drain the residual liquid after keeping warm for 40 min.

[0131] (3)Post-treatment: The dyed and crosslinked cheese yarn is washed, soaped, and fixed and softened in a cheese yarn dyeing machine and then dried to obtain the finished yarn. The washing temperature is 60 °C and the time is 5 min; the soaping temperature is 98 °C, the soaping time is 15 min each time, and the number of soaping times is 3. The dosage of soaping agent WO for the first soaping is 2 g / L, the dosage of soaping agent WO for the second soaping is 1 g / L, and the dosage of soaping agent WO for the third soaping is 1 g / L; the fixing and softening are carried out in one bath, the treatment temperature is 55 °C, the time is 21 min, the dosage of fixing agent FA-R is 3.5% of the weight of the cheese yarn, and the dosage of softening agent LUA is 4% of the weight of the cheese yarn; drying is carried out with a radio frequency dryer.

[0132] S2. Weaving: The dyed and crosslinked yarn is warped, sized, and then woven on a loom to form a figured fabric. The warp density is 130 ends per inch, the weft density is 80 picks per inch, and the fabric structure is plain weave.

[0133] S3. Fabric moisture crosslinking treatment: The process flow is singeing → desizing → mercerizing → pre-softening → moisture crosslinking → moisture crosslinking washing → stentering → preshrinking.

[0134] Singeing and desizing: The grey fabric of the figured fabric is singed and desized on a singeing and desizing combined machine. The singeing flame intensity is 10 mbar, the burner position is cross-cut singeing, the machine speed is 90 m / min, and the dosage of desizing enzyme DS-HT is 15 g / L.

[0135] Mercerizing: The fabric after singeing and desizing treatment is mercerized on a mercerizing machine. The alkali concentration is 12 Baumé, and the machine speed is 70 m / min.

[0136] Pre-softening: On a stentering machine, the mercerized fabric is padded with softening agent FRD-5 at 20 g / L, the machine speed is 85 m / min, and the drying temperature is 115 °C.

[0137] Moisture crosslinking: The pre-softened fabric is padded with a moisture crosslinking resin finishing solution on a stentering machine. The dosage of each auxiliary agent in the finishing solution is as follows: moisture crosslinking resin CR-MA 200 g / L, catalyst LRMC for moisture crosslinking resin 100 g / L, fiber protectant SF-P 10 g / L, the liquor pick-up rate is 70%, the fabric moisture content when leaving the mangle is 6%, the fabric temperature when leaving the mangle is 37 °C, and after the fabric is wound into a roll, it is piled and reacted in a constant temperature environment at 37 °C for 12 hours.

[0138] Moisture crosslinking washing: The fabric wound into a roll after moisture crosslinking is washed on a washing machine. The washing temperature is 75 °C, and the machine speed is 40 m / min.

[0139] Stentering: After moisture crosslinking washing, the fabric is padded with a softening agent to improve the hand feel on a stentering machine. The dosage of softening agent SMI-60 is 10 g / L, and the drying temperature is 115 °C.

[0140] Preshrinking: After stentering and softening finishing, the fabric is preshrunk on a preshrinking machine.

[0141] Comparative Example 1

[0142] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, small molecule crosslinking agents are not used, and other steps and process parameters are the same as those in Example 1.

[0143] Comparative Example 2

[0144] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, small molecule crosslinking agents are not used, and other steps and process parameters are the same as those in Example 2.

[0145] Comparative Example 3

[0146] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, small molecule crosslinking agents are not used, and other steps and process parameters are the same as those in Example 3.

[0147] Comparative Example 4

[0148] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, small molecule crosslinking agents are not used, and other steps and process parameters are the same as those in Example 4.

[0149] Comparative Example 5

[0150] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, small molecule crosslinking agents are not used, and other steps and process parameters are the same as those in Example 5.

[0151] Comparative Example 6

[0152] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, small molecule crosslinking agents are not used, and other steps and process parameters are the same as those in Example 6.

[0153] Example 7

[0154] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, it is the same as that in Example 6, the small molecule crosslinking agent is 1,3,5-triacryloyl hexahydro-1,3,5-triazine, and other steps and process parameters are the same as those in Example 6.

[0155] Comparative Example 7

[0156] In the dyeing and crosslinking process of the yarn dyeing and crosslinking one-bath finishing process, it is the same as that in Example 6, the small molecule crosslinking agent is N,N-methylenebisacrylamide, and other steps and process parameters are the same as those in Example 6.

[0157] Perform performance tests on Examples 1-7 and Comparative Examples 1-7. The method for testing the wrinkle-free property is AATCC TM124-2018t "Determination of Appearance Flatness of Fabrics after Multiple Home Launderings", the method for testing the tearing strength is ISO 13937-1:2000 "Textiles - Tear Properties of Fabrics - Part 1: Determination of Tear Force Using the Impact Pendulum Method", and the method for testing the breaking strength is ISO 13934-1:2013 "Textiles - Tensile Properties of Fabrics - Part 1: Determination of Breaking Force and Elongation at Break by the Strip Method".

[0158] The test data are shown in Table 1:

[0159] Table 1 Performance Data of Examples 1-7 and Comparative Examples 1-7

[0160]

[0161] In summary, after one crosslinking in the yarn dyeing step and then subsequent wrinkle-free finishing, the fabric does not reduce in strength, and the wrinkle-free property can be improved by 0.2 to 0.3 grades; the effect of polyazine compounds is better than that of other types of compounds.

Claims

1. A method for improving the non-ironing properties of cellulose fiber yarn-dyed fabrics, characterized in that: The process includes: S1. Yarn dyeing and cross-linking in one-bath finishing: (1) Pretreatment: The cellulose fiber loose cheese yarn is oxygen bleached in a cheese yarn dyeing machine; (2) Dyeing and cross-linking: The pre-treated cheese yarn is dyed and cross-linked in the cheese yarn dyeing machine by immersion dyeing. (3) Post-treatment: The dyed and cross-linked cheese yarn is washed, soaped, fixed and softened, and then dried to obtain the finished yarn; S2, weaving: the dyed and cross-linked yarns are warped and sizing before weaving to form dyed woven fabrics on a loom; S3, fabric non-ironing finishing: the yarn-dyed fabric is subjected to dry cross-linking treatment or wet cross-linking treatment; The small molecule cross-linking agent used in the cross-linking in step (2) is a polyazine compound; The dyeing and cross-linking one-bath finishing process described in step S1 is as follows: the dye is a medium-temperature or high-temperature reactive dye, the dye concentration is 0.1-8% of the weight of the cheese, the amount of the small molecule cross-linking agent is 3-4% of the weight of the cheese, sodium sulfate: 10-80 g / L, soda ash: 10-25 g / L, and the bath ratio is 1:6.5-1:12; The process flow of the dry cross-linking treatment process in step S3 includes singeing → desizing → mercerizing → ironing → baking → pre-shrinking; The process flow of the moisture cross-linking treatment process in step S3 includes singeing → desizing → mercerizing → pre-softening → moisture cross-linking → washing → stentering → pre-shrinking; The non-ironing process of the dry cross-linking treatment process: non-ironing resin CR-E: 100~120g / L, catalyst CT-C for non-ironing resin: 30~36g / L, fiber protection agent SF-P: 10~40g / L, formaldehyde scavenger FDS: 20~40g / L, softener SEH-02: 20~40g / L, finishing liquid pH value 3~5, liquid rolling rate 60~70%, drying temperature 100~110℃, drying time 1~2min; baking process: baking temperature 150~165℃, baking time 1~3min; The moisture cross-linking process of the moisture cross-linking treatment process is as follows: moisture cross-linking resin CR-MA: 200~230g / L, moisture cross-linking resin catalyst LRMC: 100~115g / L, fiber protection agent SF-P: 10~40g / L, liquid rolling rate 60~70%, cloth humidity 6~7%, cloth temperature 36~38°C, and constant temperature stacking time 12~24h.

2. The method for improving the non-ironing property of cellulose fiber color-woven fabric according to claim 1, characterized in that: The cheese weight in step S1 is 0.5-1 kg, and the cheese density is 0.36-0.38 g / cm 3 .

3. The method for improving the non-ironing properties of cellulose fiber color-woven fabrics according to claim 1, characterized in that: The oxygen bleaching process described in step S1 is: chelating agent SQ-B: 0.1~0.5g / L, scouring agent SA-E: 1~4g / L, caustic soda: 1~4g / L, hydrogen peroxide: 0.1~10g / L, temperature 90~110℃, time 10~60min.

4. The method for improving the non-ironing property of cellulose fiber color-woven fabric according to claim 1, characterized in that: The dry crosslinking treatment process and the wet crosslinking treatment process in step S3 are carried out on a tenter frame.

Images