CN104264447B - A kind of manufacture method of the knitting fabric of washable piece dyeing - Google Patents

Abstract

The invention provides a manufacturing method of a washable piece-dyed knitted fabric. The production method comprises the following steps: knitting greige yarns into greige fabrics, sequentially scouring, enzyme washing, dyeing, opening, drying, liquid ammonia mercerizing, neutralizing, oversoftening, opening, drying, shaping, pre-shrinking, The described washable piece-dyed knitted fabric is obtained. The production method of the present invention adopts the steps of scouring, enzyme washing and dyeing, and then liquid ammonia mercerizing, which is beneficial to the effect of liquid ammonia mercerizing and the recycling of liquid ammonia, and combined with resin treatment, the dimensional stability of the knitted product obtained is better , the feel and color remain longer, and the cloth surface has high flatness, comfortable hand feeling, soft and elastic, and better strength. This production method not only improves the various performances of knitted products, but also increases its added value and technological content, and the use of recyclable liquid ammonia for treatment has the concept of green environmental protection.

Description

A kind of preparation method of washable piece dyed knitted fabric

technical field

The invention relates to a manufacturing method of a washable piece-dyed knitted fabric, which belongs to the technical field of knitting dyeing and finishing.

Background technique

Knitted fabrics are widely used in sportswear, casual clothes and underwear, and are characterized by comfort, breathability and good elasticity. However, its poor dimensional stability, easy deformation, pilling and discoloration (whitening) after washing seriously affect the wearing performance. At present, the purpose of washing resistance is generally achieved through the following methods:

1. Using the finishing method of shaping resin, the resin improves the wrinkle resistance, elasticity and dimensional stability of the knitted fabric by cross-linking with the cellulose fiber, and to a certain extent improves the anti-pilling and color change effect of the fabric after washing. However, the temperature, time and dosage in the reaction conditions of resin finishing are difficult to grasp, and it is necessary to achieve a balance between improving fabric performance and strength retention.

2. Improve the dimensional stability and shape retention of knitted fabrics through resin finishing combined with enzyme washing or singeing. Adding enzyme washing or singeing resin finishing can improve the appearance of the fabric before washing, and greatly improve the wash resistance of knitted fabrics. However, in the actual production process, in addition to the difficulty of grasping the conditions of resin setting, it is also more difficult to grasp the enzyme washing, because the effect of enzyme washing also needs to grasp the balance between the effect of cloth surface and the loss of strength.

Contents of the invention

In order to solve the above technical problems, the object of the present invention is to provide a method for making washable piece-dyed knitted fabrics. The manufacturing method of the present invention utilizes liquid ammonia mercerization combined with resin and enzyme washing treatment, so that the obtained knitted product can have good dimensional stability and good washability.

In order to achieve the above object, the present invention provides a manufacturing method of a washable piece-dyed knitted fabric, as shown in the process flow in Figure 1, which includes the following steps: making the yarn sequentially knit, scoured, enzyme washed, dyed, Open width, drying, liquid ammonia mercerizing, neutralization, oversoftening, opening width, drying, setting and pre-shrinking to obtain the washable piece-dyed knitted fabric.

In the above-mentioned production method, preferably, the treating agent used in the scouring is a 50% NaOH solution (1-3g/L) containing 1-2g/L scouring agent that can stably obtain ONE, 1-3g/L mass concentration The content is based on the amount of NaOH solution) and the treatment agent whose specification is 27.5% H ₂ O ₂ solution (the content of 1.5-4g/L is based on the amount of H ₂ O ₂ solution) of 1.5-4g/L. The scouring treatment temperature is 90-100° C., and the treatment time is 40-60 minutes.

In the above-mentioned production method, preferably, the enzyme washing uses a washing solution containing 0.75-3 g/L cellulase, the treatment temperature of the enzyme washing is 45-60° C., and the treatment time is 45-60 minutes. More preferably, the cellulose cellulase is Cellusoft combi produced by Novozymes China Biotechnology Co., Ltd.

In the above preparation method, preferably, the pH value of the washing solution used in the enzyme washing is 4.5-5.5. More preferably, NaAC and/or HAC is used to adjust the pH of the washing solution.

In the above-mentioned production method, preferably, the dyeing includes coloring, neutralization, soaping and color fixation, does not include too soft, soaping uses a treatment agent containing 0.5-1g/L soaping agent, and the treatment temperature is 90 -100°C, the treatment time is 10-20min; the color is fixed with a treatment agent containing 0.5-2g/L color fixing agent, the treatment temperature is 40-50°C, and the treatment time is 20-30min. More preferably, the soaping agent is XQW-1 produced by Dongguan Xianqiao Auxiliary Industry Co., Ltd.; the color fixing agent is DM2518 produced by Guangdong Demei Fine Chemical Co., Ltd.

In the above-mentioned production method, more preferably, the treatment agent used in the soaping in the dyeing may also contain 0.5-1 g/L degreasing agent. The degreasing agent is preferably DM1133 produced by Guangdong Demei Fine Chemical Co., Ltd.

In the above-mentioned production method, the dyes and other auxiliaries used for the coloring in the dyeing, as well as the specific operation steps and parameters can be conventional in the field. The neutralization in the dyeing can also be conventional in the art, and neutralization can be carried out at room temperature with a treatment agent containing 0.1-0.5 g/L HAC.

In the above-mentioned production method, preferably, the liquid ammonia mercerizing is to pass the dyed and open-width knitted fabric directly through the liquid ammonia treatment box at a speed of 8-15m/min without passing through the drying cylinder, and the liquid ammonia mercerizing During the process, the treatment temperature ranged from -33.4°C to -77.7°C. The specific cloth threading route is shown in Figure 4. The cloth threading route is: the knitted fabric passes through the unwinding tension roller, and adjusts the unwinding tension 1 to 15N, and then passes through the first expanding roller 11, the second expanding roller 12, the third Spreading roller 13 ensures that the knitted fabric is neatly fed into the liquid ammonia treatment box, then passes through the fourth spreading roller 21 after passing through the liquid ammonia dipping tank, and then passes through the rollers to ensure that the knitted fabric is evenly dipped in liquid ammonia, and the knitted fabric is dipped After liquefied ammonia, the weft direction is easy to shrink, and then passes through the fifth expanding roller 22 and the sixth expanding roller 23, and adjusts the tension 2 after the pressure groove to be 150N, and then enters the woolen blanket cylinder of the first steam box smoothly, and exits After the cylinder passes through the seventh expanding roll 31 and the eighth expanding roll 32, and adjusts the tension 3 of the first steam box to 45N, then enters the second steaming box for ammonia removal, and then directly passes through the ninth expanding roll 33 10th expansion roller 34, without going through the upper and lower cloth guide rollers, directly goes out of the second steaming box, and adjusts the tension 4 of the second steaming box to 45N, to reduce the excessive influence of warp tension, and to go out of the second steaming box. After the box, through the eleventh expanding roller 41, through the horizontal cloth falling frame, after leaving the second steam box, the cloth is directly dropped, without passing through the water tank and the drying cylinder. The step of liquid ammonia mercerizing adopts a small tension path in the liquid ammonia tank, which can avoid deformation and curling of the knitted fabric caused by excessive radial tension. Excessive radial tension causes the knitted fabric to be overstressed and deformed, or cause excessive shrinkage. The liquid ammonia mercerizing process is suitable for most knitted varieties such as Interlock, Lacoste, Terry, Rib, Jacquard and low yarn count Pique and Jersey.

In the above-mentioned production method, preferably, the neutralization uses a treatment agent containing 0.1-0.5g/L HAC, the treatment temperature is 40-50°C, and the treatment time is 10-20min; the over-softening treatment agent contains 1- 3g/L silicone oil softener and 0.1-0.5g/L penetrating agent, the treatment temperature is 40-50℃, and the treatment time is 30-40min. More preferably, the silicone oil softener is Ultratex STS produced by Huntsman Chemical Trading Co., Ltd.; the penetrant is FKS produced by Dongguan Xianqiao Auxiliary Industry Co., Ltd.

In the above-mentioned production method, preferably, the said setting adopts the resin containing 20-50g/L, 8-20g/L catalyst, 20-30g/L anti-pinhole soft oil, 1-2g/L penetrating agent and 30- 120g/L silicone oil softener treatment agent; vehicle speed 16-22m/min, treatment temperature 150-175℃. More preferably, the resin is FixapretECO produced by BASF China Co., Ltd.; the catalyst is MgCl ₂ 6H ₂ O; the anti-pinhole soft oil is Sapamine SEW produced by Huntsman Chemical Trading Co., Ltd.; The softener is FKS produced by Dongguan Xianqiao Auxiliary Industry Co., Ltd.; the silicone oil softener is Ultratex STS produced by Huntsman Chemical Trading Co., Ltd. The silicone oil softener used for styling is preferably UltratexSTS, but other conventional silicone oil softeners can also be selected due to hand feeling requirements.

In the above-mentioned production method, preferably, the pre-shrinking adopts a felt-type pre-shrinking machine, and the vehicle speed is 15-25 m/min.

In the above-mentioned production method, the auxiliaries used in each step are preferably textile auxiliaries, and other similar auxiliaries can also be used. Under the premise of not affecting the performance of the washable knitted piece dyed fabric, the auxiliaries can be used according to the use of auxiliaries. Change the process conditions accordingly. Moreover, in the above-mentioned production method, the solvent of the treatment agent used in each step is water.

In the above-mentioned production method, appropriate process adjustments can be made according to different fabric styles and customer requirements, but the liquid ammonia mercerizing must be carried out after the gray cloth is scoured and enzyme-washed and dyed, which is conducive to the effect of liquid ammonia mercerizing and also has It is beneficial to the recycling of liquid ammonia.

The manufacturing method of the washable piece-dyed knitted fabric of the present invention utilizes resin finishing, enzyme washing combined with liquid ammonia mercerizing to improve the dimensional stability and washability of the knitted fabric. As a polar, small molecule, low viscosity, medium dielectric constant non-aqueous fiber bulking agent, ammonia molecules can penetrate into the fiber fibrils in a very short time, making the oxygen bonds in and between fiber molecular bundles The cellulose fiber is dismantled, resulting in a certain plastic state. When the ammonia entering the fiber is removed, the fiber naturally retracts, and the molecules are rearranged, eliminating the congenital and acquired internal stress of the fiber. This kind of treatment has the effect of mercerizing, but it is different from the traditional caustic soda mercerizing, and will not cause the erosion and unevenness of the cellulose fibers caused by caustic soda. The performance of liquid ammonia mercerizing is macroscopically reducing the sliding friction between fibers, increasing strength, wear resistance, elasticity, and improving dimensional stability. The strength of the fabric is increased by liquid ammonia mercerizing, combined with resin setting and enzyme washing, more washable knitted products can be obtained.

In the production method of the present invention, the scouring, enzyme washing and dyeing are carried out first, and then the liquid ammonia mercerizing is carried out. The impurities and oil wax of the knitted gray fabric can be removed through scouring and enzyme washing, and the hydrophilicity of the knitted fabric can be improved, which is beneficial to the liquid ammonia. The penetration effect of ammonia mercerizing can enhance the reaction effect of liquid ammonia mercerizing. Moreover, the liquid ammonia used in mercerizing treatment needs to be recovered and recycled, and the liquid ammonia treated with clean knitted fabrics is conducive to recycling. By changing the liquid ammonia mercerizing process, the cloth is directly discharged from the outlet of the liquid ammonia tank without going through the washing tank and drying cylinder, which reduces the tension of the knitted fabric, reduces the probability of curling of the knitted fabric, and minimizes the knitted fabric The vertical tension is beneficial to improve the shrinkage of knitted fabrics. After the knitted fabric is treated with liquid ammonia, although the arrangement and distribution of the fiber structure have changed, and the strength and elasticity have been improved, the small amount of residual ammonia and the internal stress produced by liquid ammonia mercerizing will affect the feel and appearance of the knitted fabric. The neutralization and supersoftness can remove residual ammonia and eliminate internal stress, improving its appearance and feel. After liquid ammonia mercerizing, the knitting strength is improved, and then it is soft and shaped by resin, which greatly improves the appearance and anti-pilling performance of knitted fabrics after washing. The addition of softener silicone oil in the styling treatment agent, in conjunction with other agents, can continuously increase the washability of knitted fabrics. Finally, the use of pre-shrinking can improve the shrinkage of the fabric and has a mechanical softening effect.

Compared with the processing method of washable knitted fabric in CN1730809A and the processing method of low elastic non-ironing knitted fabric in CN101200852A, the main difference between the manufacturing method of washable piece dyed knitted fabric of the present invention and the two is that the above two methods The prior art is to adopt gray cloth liquid ammonia mercerizing, and the mercerizing effect of this process is different from the mercerizing effect of the present invention, and its reaction degree is weaker. Specifically, compared with the process of direct liquid ammonia mercerizing without scouring and enzyme washing in the prior art, the process of scouring first, enzyme washing and then liquid ammonia mercerizing in the present invention can make the proportion of fiber cross section rounded significantly increase, so the processing steps of the present invention can make the effect of liquid ammonia more obvious. Compared with the processing method of the novel soft and smooth knitted fabric in CN101550656A, the main difference between the preparation method of the washable piece-dyed knitted fabric of the present invention and the technology is that the technique of the present invention is dyeing before liquid ammonia mercerizing, while the prior art The process in is liquid ammonia post-dyeing. The present invention uses liquid ammonia for pre-dyeing, which is beneficial to the control of dyeing quality, while the prior art uses liquid ammonia for post-dyeing, which is faster in coloring, but easy to dye.

According to the manufacturing method of the washable piece-dyed knitted fabric of the present invention, liquid ammonia mercerizing is carried out after gray cloth is scoured and dyed with enzymes, which can improve the contact reaction time between liquid ammonia and knitted fabrics, is beneficial to the effect of liquid ammonia mercerizing, and makes the effect of liquid ammonia More fully; at the same time, liquid ammonia mercerizing with clean knitted fabrics can reduce the residue of liquid ammonia impurities, which is conducive to the recovery and reuse of liquid ammonia. The strength, elasticity and dimensional stability of piece-dyed knitted fabrics can be improved by scouring enzyme washing and liquid ammonia mercerizing, and the curling problem and warp shrinkage in the production process of knitted liquid ammonia can be improved by changing the process route of liquid ammonia mercerizing, which is suitable for Most knitted varieties are processed. After mercerizing with liquid ammonia, the appearance, feel and washability of the fabric can be improved by neutralizing the oversoftening, resin softener setting and preshrinking. The knitted product obtained by the production method of the present invention has better dimensional stability, the shrinkage rate is within 6% after 20 times of home washing, the hand feeling and color are kept longer, the color change rating can reach level 4, and the anti-pilling rating can reach Level 4, and the cloth surface has high flatness, comfortable hand feeling, soft and elastic, and better strength. The manufacturing method of the present invention utilizes liquid ammonia mercerizing combined with resin and enzyme washing treatment, which not only improves various performances of knitted products, but also increases its added value and technological content, and the use of recyclable liquid ammonia for treatment has the concept of green environmental protection.

Description of drawings

Fig. 1 is the process flow chart of the preparation method of the washable piece dyed knitted fabric of the present invention.

Fig. 2 is a microscopic cross-sectional view of fabric fibers after scouring, enzyme washing, and liquid ammonia mercerizing in Example 1.

Fig. 3 is a microscopic cross-sectional view of the cloth fiber in Example 1 after being directly mercerized with liquid ammonia without scouring or enzyme washing.

Figure 4 is a diagram of the threading route and tension parameters of each part of the knitted fabric treated with liquid ammonia.

Fig. 5 a is the appearance after the wear resistance test of the 40S/1 Pique fabric made by the method of the embodiment;

Figure 5b is the appearance of the 40S/1 Pique fabric made by the method of the comparative example after the wear test;

Figure 5c is the appearance of the 44S/2 Lacoste fabric made by the method of the embodiment after the wear test;

Figure 5d is the appearance of the 44S/2 Lacoste fabric produced by the comparative method after the abrasion test;

Figure 5e is the appearance of the 80S/3 Lacoste fabric made by the method of the embodiment after the wear test;

Figure 5f shows the appearance of the 80S/3 Lacoste fabric produced by the method of the comparative example after the abrasion test.

Description of main component symbols:

Unwinding tension 1

First expanding roll 11 Second expanding roll 12 Third expanding roll 13

Tension after pressing groove 2

Fourth expanding roll 21 Fifth expanding roll 22 Sixth expanding roll 23

1st Steamer Tension 3

Seventh spreader roll 31 Eighth spreader roll 32 Ninth spreader roll 33 Tenth spreader roll 34

2nd steam box tension 4

Eleventh expanding roller 41

detailed description

In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention is described in detail below, but it should not be construed as limiting the scope of implementation of the present invention.

Example

The present embodiment provides a kind of manufacture method of washable piece-dyed knitted fabric, to produce the 50S/1 double-sided (Interlock) fabric of finished product width 58inch, finished product grammage 190GM, CPI=90, WPI=55, as shown in Figure 1 As shown in the technological process, it comprises the following steps:

Knitting: use 50S/1 gray yarn to weave blank according to 32G33”50C=129MM;

Scouring: With a bath ratio of 1:10, use 2g/L refining agent to stabilize ONE (Huntsman Chemical Trading Co., Ltd.), 2g/L NaOH with a mass concentration of 50%, and 3.6g/L with a specification of 27.5% The treating agent of the H ₂ O ₂ solution is scoured under the condition that the treatment temperature is 95°C and the treatment time is 45 minutes;

Enzyme washing: with a bath ratio of 1:10, use a washing solution containing 2.5 g/L cellulose cellulase (Cellusoft combi, Novozymes China Biotechnology Co., Ltd.) and adjust the pH value to 4.5-5.0 with NaAC and HAC. Enzyme washing was carried out under the conditions of treatment temperature of 50°C and treatment time of 45 minutes;

Dyeing: including coloring, neutralization, soaping and color fixation, excluding oversoftening; with a bath ratio of 1:10, use Avolan IS containing 0.5% (owf) of dye, 0.15g/L dispersant (Lanxess Chemicals China Co., Ltd. Company), 0.5g/L CELLESH450 (Taiwan Kao Chemical Company), 20g/L Yuanming powder NA ₂ SO ₄ , 5g/L soda ash NA ₂ CO ₃ treatment agents, when the treatment temperature is 60°C and the treatment time is 60min coloring under conditions; then use a treatment agent containing 0.7g/L HAC at a bath ratio of 1:10 to neutralize at room temperature and a treatment time of 5 minutes; then use a bath ratio of 1:10 , using a treatment agent containing 0.5g/L soaping agent XQW-1 (Dongguan Xianqiao Auxiliary Industry Co., Ltd.), 0.5g/L degreasing agent DM-1133 (Guangdong Demei Fine Chemical Co., Ltd.), in Soaping was carried out under the conditions of treatment temperature of 98°C and treatment time of 15 minutes; finally, with a bath ratio of 1:10, a treatment agent containing 2g/L color-fixing agent DM-2518 (Guangdong Demei Fine Chemical Co., Ltd.) was used , Color fixing is carried out under the condition that the treatment temperature is 45° C. and the treatment time is 20 minutes.

Open-width and drying: Use an open-width machine for water rolling, and then use an open-width dryer to dry the cloth;

Liquid ammonia mercerizing: the knitted fabric after scouring, enzyme washing, dyeing and drying in the open width is directly passed through the liquid ammonia treatment box at a speed of 10m/min without a drying cylinder, and the unwinding tension is adjusted to 15N, and the tension of the press groove is adjusted. The tension of the first and second steaming boxes is 150N, the tension of the first and second steaming boxes is 45N, and the treatment temperature is -33.4°C (not lower than -77.7°C). The conventional liquid ammonia treatment box is carried out, but the threading route is changed. As shown in Figure 4, the threading route of the knitted fabric is as follows: the knitted fabric passes through the unwinding tension roller, and the unwinding tension 1 is adjusted to 15N, and then after the first expansion The width roll 11, the second expansion roll 12, and the third expansion roll 13 ensure that the knitted fabrics are neatly entered into the liquid ammonia treatment box, and then pass through the fourth expansion roll 21 after passing through the liquid ammonia dipping tank, and then pass through the rolls. Ensure that the knitted fabric is evenly dipped in liquid ammonia. After the knitted fabric is dipped in liquid ammonia, it is easy to shrink in the weft direction, and then passes through the fifth expanding roller 22 and the sixth expanding roller 23, and adjusts the tension 2 of the pressing groove to 150N, and then smooths Enter the woolen blanket cylinder of the first steaming box, pass the seventh expanding roller 31 and the eighth expanding roller 32 after exiting the cylinder, and adjust the tension 3 of the first steaming box to 45N, and then enter the second steaming box Carry out ammonia removal, then directly pass through the ninth expanding roller 33 and the tenth expanding roller 34, without passing through the upper and lower cloth guide rollers, directly go out of the second steam box, and adjust the second steam box tension 4 to 45N to reduce Due to the influence of excessive tension in the warp direction, after exiting the second steaming box, it passes through the eleventh expanding roller 41, passes through the horizontal cloth falling frame, and directly drops the cloth after exiting the second steaming box, without passing through the water tank and drying cylinder;

Neutralization: use a treatment agent containing 0.15g/L HAC at a bath ratio of 1:10, and neutralize at a treatment temperature of 40°C and a treatment time of 20 minutes;

Too soft: with a bath ratio of 1:10, use 0.5g/L penetrant FKS (Dongguan Xianqiao Auxiliary Industrial Co., Ltd.), 2g/L silicone oil softener Ultratex STS (Huntsman Chemical Trading Co., Ltd.) Treatment agent, under the conditions of treatment temperature of 45°C and treatment time of 30 minutes;

Open-width and drying: Use an open-width machine for water rolling, and then use an open-width dryer to dry the cloth;

Styling: use 40g/L resin Fixapret ECO (BASF China Co., Ltd.), 16g/L catalyst MgCl ₂ 6H ₂ O, 20g/L anti-pinhole soft oil Sapamine SEW (Huntsman Chemical Trading Co., Ltd.), 1g/L L penetrating agent FKS (Dongguan Xianqiao Auxiliary Industrial Co., Ltd.), 75g/L silicone oil softener Ultratex STS (Huntsman Chemical Trading Co., Ltd.) treatment agent, at a speed of 20m/min, a treatment temperature of 160 ° C, Shaping is 152cm, overfeed is 40%, and the weight of the unloading machine is 190-195GM;

Pre-shrinking: pre-shrinking once with a blanket type pre-shrinking machine, the speed is 20m/min.

The fiber cross-section of the cloth after scouring, enzyme washing, and liquid ammonia mercerizing in this example was observed with a microscope, and a microscopic cross-sectional view of the fiber was obtained as shown in FIG. 2 . Using the same knitted gray cloth as in this example, without scouring or enzyme washing, directly carry out liquid ammonia mercerizing. The reagents, specific operation steps and parameters used in this liquid ammonia mercerizing are the same as those in this example, and you will get The fiber cross-section of the cloth directly mercerized with liquid ammonia without scouring and enzyme washing is observed with a microscope, and its fiber micro-sectional view is shown in Figure 3. It can be seen from Figure 2 and Figure 3 that, compared with the process of directly mercerizing with liquid ammonia without scouring and enzyme washing, the process of scouring first, enzyme washing and then mercerizing with liquid ammonia in this embodiment can make the cross section of the fiber rounder The ratio is significantly increased, which shows that the process steps of this embodiment make the effect of liquid ammonia more obvious.

comparative example

This comparative example provides a production process of non-ironing and washable pure cotton knitted fabric, which adopts the process of Example 1 in CN1363736A. The main feature of this process is the use of enzyme washing and resin finishing, but the strength, wear resistance and elasticity of the obtained product All have bigger gap with the product of the present invention.

Evaluation experiment

A. Comparison of wear resistance

40S/1 Pique, 44S/2 Lacoste, and 80S/3 Lacoste fabrics were produced by the methods in the examples, respectively, and compared with the corresponding fabrics produced by the methods in the comparative examples. The test method is carried out in accordance with ISO12947-2. The general wear resistance requirement of woven resin-containing non-ironing fabrics is 8000 revs. The test results are shown in Table 1.

Table 1

As can be seen from Table 1, the wear resistance of the fabric obtained by adopting the preparation method of the washable piece-dyed knitted fabric of the present invention is obviously better than that of the fabric produced by the method in CN1363736A.

B. Comparison of elasticity

80S/3 Lacoste and 40S/1 Interlock fabrics were produced respectively by the method in the example, and compared with the corresponding fabrics produced by the method in the comparative example. The test method is carried out according to ASTM D2594. The test results are shown in Table 2.

Table 2

As can be seen from Table 2, the elasticity of the fabric obtained by adopting the manufacturing method of the washable piece-dyed knitted fabric of the present invention is obviously better than that of the fabric produced by the method in CN1363736A.

C. Strong comparison

The fabrics of 20S/1 Pique, 40S/2 Pique, and 50S/1 Interlock (that is, the fabrics produced in the examples) were produced respectively by the methods in the examples, and compared with the corresponding fabrics produced by the methods in the comparative examples. The test method is carried out according to ASTM-D3786. The test results are shown in Table 3.

table 3

Bursting strength (PSI) Fabric of the present invention contrasting fabrics 20S/1 Pique 92 72 40S/2 Pique 105 80 50S/1 Interlock 106 94

As can be seen from Table 3, the strength of the fabric obtained by adopting the preparation method of the washable piece-dyed knitted fabric of the present invention is obviously better than that of the fabric produced by the method in CN1363736A.

D. Washability evaluation

40S/2 Pique, 80S/3 Lacoste, and 50S/2 Lacoste fabrics were produced respectively by the methods in the examples for evaluation of washability. The test method is carried out according to AATCC 143-3A, and the number of washings is 20 times. The test results are shown in Table 4.

Table 4

Test items 40S/2 Pique 80S/3 Lacoste 50S/2 Lacoste standard Anti-pilling rating 4.0 4.5 4.0 >4.0 appearance rating 4.0 4.0 4.0 >3.5 Color Change Rating 4.0 4.0 4.0 >3.5 shrinkage change -4.1%X+0.2% -5.2% X -1.8% -3.71% X -3.2% <6%

As can be seen from Table 4, the dimensional stability of the fabric obtained by adopting the preparation method of the washable piece-dyed knitted fabric of the present invention is better, the shrinkage rate is within 6% after washing for 20 times, and the appearance rating can reach level 4. The change rating can reach level 4, and the anti-pilling rating can reach level 4.

Claims (11)

1. a manufacture method for the knitting fabric of washable piece dyeing, it comprises the following steps: make yarn sequentially pass through knitting, boil Practice, enzyme is washed, is dyeed, open-width, drying, liquid ammonia mercerization, neutralize, the softest, open-width, dry, shape, preshrunk, obtain described washable The knitting fabric of piece dyeing；

Wherein, described liquid ammonia mercerization be by dyeing and open-width dry after knitting fabric without drying cylinder directly with 8-15m/min Speed processed by Liquid Ammonia Treatment case, treatment temperature is-33.4 to-77.7 DEG C, during described liquid ammonia mercerization, wears Cloth route is: knitting fabric passes through reeling-off tension roller, and to regulate reeling-off tension (1) be 15N, then through the first spreading roll (11), Second spreading roll (12), the 3rd spreading roll (13), it is ensured that knitting fabric open width neatly enters Liquid Ammonia Treatment case, then soaks through liquefied ammonia By the 4th spreading roll (21) after groove, then through roll, it is ensured that knitting fabric uniformly pads liquefied ammonia, then through the 5th spreading roll (22), the 6th spreading roll (23), and to regulate binder groove backward pull (2) be 150N, the blanket of the most smooth entrance the first steaming box Cylinder, goes out after cylinder through the 7th spreading roll (31), the 8th spreading roll (32), and to regulate the first steaming box tension force (3) be 45N, Carry out except ammonia subsequently into the second steaming box, be directly over the 9th spreading roll (33), the tenth spreading roll (34) afterwards, without upper Lower fabric guide roll, directly goes out the second steaming box, and to regulate the second steaming box tension force (4) be 45N, goes out after the second steaming box through the 11st Spreading roll (41), through horizontal folder, direct cropping after going out the second steaming box, without water tank and drying cylinder.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 1, wherein, the process that described kiering uses Agent is The H of 27.5%₂O₂The inorganic agent of solution, the treatment temperature of described kiering is 90-100 DEG C, and the process time is 40-60min.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 1, wherein, described enzyme is washed employing and is contained The washing liquid of 0.75-3g/L cellulose fibre enzyme, the treatment temperature that described enzyme is washed is 45-60 DEG C, and the process time is 45-60min.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 3, wherein, described enzyme washes the washing liquid of employing PH value be 4.5-5.5.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 1, wherein, described dyeing include coloring, Neutralizing, soap and fixation, do not included soft, soap and use the inorganic agent containing 0.5-1g/L soaping agent, treatment temperature is 90- 100 DEG C, the process time is 10-20min；Fixation uses the inorganic agent containing 0.5-2g/L color fixing agent, and treatment temperature is 40-50 DEG C, the process time is 20-30min.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 1, wherein, described neutralization employing contains The inorganic agent of 0.1-0.5g/L HAC, treatment temperature is 40-50 DEG C, and the process time is 10-20min；The soft employing of described mistake contains 1-3g/L silicone oil softener and the inorganic agent of 0.1-0.5g/L penetrating agent, treatment temperature is 40-50 DEG C, and the process time is 30- 40min。

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 1, wherein, described sizing employing contains 20-50g/L resin, 8-20g/L catalyst, 20-30g/L anti-pin hole consistent lubricant, 1-2g/L penetrating agent and 30-120g/L silicone oil are soft The inorganic agent of soft dose；Speed is 16-22m/min, and treatment temperature is 150-175 DEG C.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 1, wherein, described preshrunk uses blanket formula Preshrinking machine, speed is 15-25m/min.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 5, wherein, described soaping agent is Dongguan City The XQW-1 that Xian Qiao auxiliary agent Industrial Co., Ltd. produces；Described color fixing agent is that Guangdong Demei Fine Chemical Co., Ltd. produces DM2518.

The manufacture method of the knitting fabric of washable piece dyeing the most according to claim 6, wherein, described silicone oil softener is Hensel steps the Ultratex STS that Chemical trade company limited produces；Described penetrating agent is the Dongguan City celestial being bridge limited public affairs of auxiliary agent industry The FKS that department produces.

The manufacture method of the 11. knitting fabrics of washable piece dyeing according to claim 7, wherein, described resin is BASF The Fixapret ECO that middle Co., Ltd produces；Described catalyst is MgCl₂·6H₂O；Described anti-pin hole consistent lubricant is that Hensel steps The Sapamine SEW that Chemical trade company limited produces；Described penetrating agent is that Dongguan City Xian Qiao auxiliary agent Industrial Co., Ltd. produces FKS；Described silicone oil softener is the Ultratex STS that Hensel steps that Chemical trade company limited produces.