WO2021003944A1

WO2021003944A1 - Dyeing and finishing process capable of forming ptt/pet composite fiber fabric having crepe feeling

Info

Publication number: WO2021003944A1
Application number: PCT/CN2019/118866
Authority: WO
Inventors: 钱琴芳; 赵学谦; 陈威; 陈翔
Original assignee: 盛虹集团有限公司
Priority date: 2019-07-10
Filing date: 2019-11-15
Publication date: 2021-01-14
Also published as: CN110306310A

Abstract

A dyeing and finishing process capable of forming a PTT/PET composite fiber fabric having a crepe feeling, comprising a pretreatment process, a dyeing process, and a setting process which are performed in sequence; the pretreatment process comprises a first open-width OS desizing process and a second open-width OS desizing process which are performed in sequence; in the dyeing process, a high-temperature and high-pressure airflow overflow dual-purpose dyeing machine is used for dyeing, and the dyeing process is divided into a dyeing stage and a water washing stage, in the dyeing stage, the dyeing machine being in an airflow mode, and in the water washing stage, the dyeing machine being in an air-liquid mode; and in the setting process, dyed greige fabric is set using a setting treatment liquid by means of a setting machine. While ensuring the dyeing quality, the present invention can make the processed fabric flawless, and provide a zigzag crepe feeling for the fabric, so that the fabric has an obvious airflow style; the fabric has good color reproduction, is soft to touch, has a shape memory function in the weft direction and an obvious elastic effect, and satisfies the wearing requirements.

Description

Dyeing and finishing process capable of forming crepe-like PTT/PET composite fiber fabric

Technical field

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a dyeing and finishing process capable of forming a crepe-like PTT/PET composite fiber fabric.

Background technique

Although the airflow dyeing machine was developed and promoted by Germany in 1979, it started and developed relatively late in my country. Traditional domestic dyeing machines generally use the principle of circular dyeing vat, which has a high market share due to its low cost, simple operation, and low maintenance. In recent years, with the tightening of environmental protection policies, the use of new equipment, new technologies, and new processes to upgrade and transform the printing and dyeing industry has broad market development prospects and inevitability.

Airflow dyeing is mainly based on the principle of aerodynamics. The high-speed airflow generated by the high-pressure fan is injected into the nozzle from the air inlet. At the same time, another pipeline injects the dye solution from the water inlet into the nozzle. The dye solution and the high-speed airflow meet and mix at the nozzle to form a mist. After spraying into the fabric, the fine droplets are sprayed. Compared with the traditional overflow, jet and overflow dyeing machine in which the dye liquor draws the fabric circulation, the airflow dyeing machine draws the fabric circulation through the airflow, and completes the dyeing of the fabric. In the entire dyeing process, water only acts as a solvent for dyes and a swelling agent for fabric wetting, which greatly reduces the bath ratio of fabric dyeing. The decrease in liquor ratio means that the steam consumption required for heating and heating, the cooling water required for cooling, the consumption of dyestuffs and the reduction of pollutant discharge are reduced, which in turn promotes energy saving and emission reduction in the production process.

Because the volume of the air-flow mist-like dye molecule droplet is smaller than the volume of the liquid dye molecule, the number of migration of the dye molecule per unit time increases, the dyeing levelness of the grey cloth is improved, the dyeing time is shortened, and the dyeing reproducibility is good. In addition, due to the effect of the mist-like airflow, the refined dye molecules are more likely to enter the wrinkle area of the rope-like grey fabric, so it is not easy to produce colored flowers and dyeing creases, so that the dye solution and the fabric are in full contact in a short time to achieve the purpose of leveling. . The characteristics of airflow dyeing in terms of energy saving, emission reduction and level dyeing have made it not only used to replace traditional liquid flow processing in enterprises in recent years, but also widely used in the processing of high-end fabrics and chemical fiber simulations such as Tencel and Tencel blends. Class and ultra-fine differentiated fibers. In the actual application process, it was found that in addition to meeting the conventional dyeing requirements, in the processing process, through the deep excavation of the dyeing machine's own performance, reasonable adjustment of airflow dyeing parameters such as fan, main pump, ring time and other parameters, combined with the heating dyeing process, The fabric acquires a new style that the liquid dyeing machine does not possess. The fabric surface after the cylinder has a tortuous crepe feel. This "airflow style" not only makes the fabric feel soft, but also caters to the market demand.

The PTT/PET composite fiber fabric is made by interweaving PTT and PET. Because it contains more PTT components, the fabric itself has good elasticity and deformation memory. It is widely used in the production of sportswear, casual wear, underwear, and outerwear. , Furniture decoration cloth and other fields. However, in the dyeing and finishing process, due to improper use of technology or parameters, the fabric is prone to chromatic aberration, uneven dyeing, scratching and polishing, and hard feel. Therefore, choosing a suitable dyeing and finishing process determines the dyeing quality of the fabric. Bad and other properties.

Summary of the invention

In order to solve the above technical problems, the purpose of the present invention is to provide a dyeing and finishing process that can form a crepe-like PTT/PET composite fiber fabric. According to the characteristics of the fabric itself, by formulating appropriate pre-treatment processes, dyeing processes and shaping The process, under the premise of ensuring the quality of dyeing, can not only make the processed fabric free of scratches and other defects, but also give the fabric a zigzag crepe feel, so that the fabric has an obvious airflow style, and the fabric has good color reproducibility and soft feel. And the latitude has the shape memory function, the elasticity effect is obvious, and it meets the relevant requirements of taking.

In order to achieve the above technical objectives and achieve the above technical effects, the present invention is achieved through the following technical solutions: a dyeing and finishing process that can form a crepe-like PTT/PET composite fiber fabric, the dyeing and finishing process includes a pre-treatment process, dyeing Process and shaping process, the pre-treatment process includes the first open-width OS desizing process and the second open-width OS desizing process in sequence. The dyeing and finishing process steps are as follows:

(1) Pre-treatment process:

The first open-width OS desizing process uses an open-width desizing machine to perform the first open-width desizing treatment on the fabric grey cloth. The desizing aid formula used in the first open-width desizing process is as follows:

The second open-width OS desizing process uses an open-width desizing machine to perform a second open-width desizing treatment on the fabric grey fabric that has undergone the first open-width desizing treatment. The formula of sizing aid is the same as that of the first open-width desizing process;

(2) Dyeing process:

The pre-treated fabric grey cloth is dyed. The dyeing agent used in the dyeing process is composed of dyeing auxiliaries and dyes. The dyes are disperse dyes. The dyeing process is performed by a dual-purpose dyeing machine with high temperature and high pressure airflow overflow. Dyeing, when the dyeing vat temperature of the dyeing machine reaches 45℃, start to inject dyeing auxiliaries and disperse dyes; the dyeing process is divided into a dyeing stage and a washing stage. In the dyeing stage, the dyeing machine is in airflow mode, and in the washing stage, the dyeing machine It is a gas-liquid mode; the initial dyeing temperature of this dyeing process is 85℃, the holding time is 5min, and then the temperature is increased at a rate of 0.8℃/min based on the initial dyeing temperature;

(3) Shaping process:

In the setting process, the dyed fabric grey cloth is fixed by a setting machine and a setting treatment liquid.

Preferably, in the dyeing stage of the dyeing process, after the dyeing agent is injected, the temperature of the dye vat is increased to 85°C at a rate of 0.7°C/min. Dyeing is started at this temperature, kept for 5 minutes, and then increased at 0.8°C/min. Increase the temperature to 105°C, hold for 10 minutes, then increase the temperature to 115°C at a rate of 1.0°C/min, hold for 10 minutes, and then increase the temperature to 130°C at a rate of 1.0°C/min, hold for 80 minutes, and then at 1.2°C/min The cooling rate is lowered to 80℃, and then it enters the washing stage. The washing stage is to wash the dyed fabric grey cloth at a temperature of 70℃ for medium-temperature water washing, the medium-temperature water washing time is 30 minutes, and then the normal temperature water washing, the normal temperature water washing time For 5min.

Preferably, the dyeing auxiliaries in the dyeing process include ammonium sulfate, superfine fiber high-temperature levelling agent TF-212K and color repairing agent S-8231, and the amounts of the three dyeing auxiliaries in the dyeing agent are as follows:

Ammonium sulfate 0.8g/L,

Superfine fiber high temperature levelling agent TF-212K 0.6/L,

Color correction agent S-8231 0.2g/L.

Preferably, the dye in the dye in the dyeing process includes the following components:

Disperse Blue 2BLN 0.10%owf

Scattered golden NP-RGL 0.02%owf

Disperse Red 3B 0.06%owf.

Preferably, the temperature conditions of the first open-width OS desizing process and the second open-width OS desizing process are both 95-98°C, and the vehicle speed is 45-55m/min.

Preferably, the bath ratio of the dyeing process is 1:3.3.

Preferably, in the dyeing process, the process parameters of the dyeing machine are: the output frequency of the main pump is 35 Hz, the output frequency of the fan is 37.5 Hz, and the rotation speed of the cloth lifting wheel is 420 rpm.

Preferably, the styling treatment liquid used in the styling process contains 20 grams of fluorine-based water and oil repellent water repellent TF-4109, 10 grams of antistatic agent and 5 grams of softener per liter of the styling treatment liquid.

Preferably, the shaping temperature of the shaping process is 180° C., the vehicle speed is 45 m/min, the fan speed is 1400 r/min, and the shaping machine performs 4 positive overfeeds.

Preferably, in the dyeing process, the dyeing auxiliaries are first injected into the dyeing vat in the form of direct pumping, and then the disperse dyes are injected in the manner of proportional injection, and the injection time is 30 minutes.

Compared with the prior art, the present invention has the following advantages and effects:

(1) The present invention uses a dual-purpose dyeing machine with high temperature and high pressure airflow to perform dyeing. In the dyeing stage, the dyeing vat is set to the "air flow mode", and when the water washing starts after dyeing, it is set to the "air-liquid mode". Achieve uniform dyeing effect, and can give "airflow style", so that the overall water consumption is maintained at a low usage;

(2) In the dyeing process of the present invention, 85°C is used as the initial dyeing temperature, and the temperature is kept at this temperature for 5 minutes, and then the temperature is raised at a temperature increase rate of 0.8°C/min, which can make the fabric obtain a better initial dyeing effect; Invented by designing a reasonable temperature-rising dyeing process and cooperating with the parameter design of the dyeing machine, the fabric obtains a new style that the liquid dyeing machine does not have after processing. The fabric surface after the vat has a tortuous crepe feeling, forming a special "Airflow style", this style not only makes the fabric feel soft, but also caters to market demand well;

(3) The present invention can not only make the processed PTT/PET composite fiber fabric without scratches and other defects through the reasonable design of the pretreatment process, dyeing process, and setting process, but also the elasticity of the composite yarn will not be destroyed, and the fabric has deformation Memory, dye uniformity and color fastness meet customer requirements.

Description of the drawings

Figure 1 is a dyeing temperature process curve in the dyeing process of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so that the protection scope of the present invention can be more clearly defined.

Example

Fabric grey cloth: 75D PET in warp direction, 75D PTT/PET composite yarn in weft direction, warp and weft density: 75*42, grey cloth width is 192cm, fabric surface density is 110g/m ² , fabric weight is 211g/m, fabric The organization structure adopts twill weave.

The manufacturers and models of the dyes, various additives and equipment used in this embodiment are as follows:

Dyestuffs Disperse Blue 2BLN (Zhejiang Boao Dyestuff Industry Co., Ltd.), Disperse Golden NP-RGL (Zhejiang Longsheng Group Co., Ltd.), Disperse Red 3B (Zhejiang Deou Chemical Manufacturing Co., Ltd.);

Auxiliary 32-Ion-exchange membrane alkali (Jiangsu Suhua Group Co., Ltd.), oxidizing desizing agent TF-127A, chelating dispersing agent TF-133F, superfine fiber high temperature leveling agent TF-212K (Zhejiang Chuanhua Co., Ltd.) , Ammonium tripolyphosphate (industrial grade, 95%, Yunnan Dingxin Phosphorus Chemical Plant), ammonium sulfate (Shanghai Petrochemical Xinyuan Chemical Industry Co., Ltd.), color repair agent S-8231 (Yixing Hualian Chemical Co., Ltd.).

Equipment OS-9V1200 open-width desizing machine (Taiwan Hongrong Dyeing and Finishing Machinery Co., Ltd.), SAF3-2HT high temperature and high pressure air overflow dual-use dyeing machine (Deyijia Machinery Jiangsu Co., Ltd.), MEGATE setting machine (Korea Micron Machinery Co., Ltd.); RVMC-12 Mano photoelectric weft straightening machine (German Mahlo company), Datacolor 600 computer color measuring instrument (U.S. Datacolor company), Y571B dry and wet rubbing fastness tester (Ningbo Textile Instrument Factory), SW-12A Washing fastness testing machine (Wuxi Textile Instrument Factory).

The dyeing and finishing process of the PTT/PET composite fiber fabric provided in this embodiment includes a pretreatment process, a dyeing process, and a setting process. The pretreatment process includes the first open-width OS desizing process and the second The sub-open width OS desizing process, the specific steps of the dyeing and finishing process are as follows:

(1) Pre-treatment process:

The desizing process conditions are: the desizing temperature is 95℃, and the speed of the desizing machine is 50m/min.

The warp yarn of the PTT/PET composite fiber fabric is 75D PET yarn. During the weaving process, the warp yarn is subjected to repeated friction, stretching, bending, etc. on the loom during the weaving process, and it is prone to breakage. In addition, the single yarns are not tightly bound to each other, and the surface has more hairiness and is difficult to weave. In order to reduce breakage and improve weaving efficiency and grey fabric quality, it is necessary to sizing warp yarns. However, although the sizing process is conducive to the weaving process, it is not conducive to the subsequent dyeing and finishing of the fabric. The sizing film covered on the surface will hinder the diffusion and bonding of the dye into the fiber, resulting in low dye uptake and problems such as colored flowers. Therefore, it is necessary to desizing the PTT/PET composite fiber fabric.

The TF-127A oxidizing desizing agent selected in the first open-width OS desizing process has good alkali resistance stability under 95℃ hot alkali conditions, and can make the polyacrylic acid sizing commonly used in the sizing process larger Molecules undergo oxidative decomposition and become small molecular segments with better water solubility, and their viscosity is rapidly reduced, making them easy to fall off the fabric. Ammonium tripolyphosphate and chelating dispersant TF-133F have a good chelating effect on metal ions, which can not only prevent the anti-contamination of the falling slurry, but also soften the water quality in the desizing machine. The two can produce synergy It can ensure a better pretreatment effect.

After the open-width desizing treatment, the slurry, oil stains and stains on the surface of the fabric can basically be effectively treated. Due to the effect of heat and humidity, the internal stress of the fabric is relieved, and the door width shrinks to a certain extent. The lower door width is about 184cm.

The second open-width desizing process adopts the same desizing assistant formula as the first open-width desizing process, and the process conditions are the same as those of the first open-width desizing process.

The main purpose of the second open-width OS desizing is to shrink the width. The temperature in the tank of the desizing machine is about 95℃, which is higher than the glass transition temperature (Tg) of the PTT and PET components in the fabric, so the molecular chain Movement and reorganization can be obtained, the tension is further eliminated, and the door width is reduced again. After the second treatment, the width of the fabric under the machine is about 168cm, and the elastic effect of the PTT/PET composite yarn with 75D weft direction is obvious.

(2) Dyeing process:

The pre-treated fabric grey cloth is dyed, and the dyeing agent used in the dyeing process is composed of dyeing auxiliary and dye, and the dye is disperse dye. In this embodiment, the dyeing auxiliary agent includes ammonium sulfate, superfine fiber high temperature leveling agent TF-212K and color repairing agent S-8231, and disperse dyes include disperse blue 2BLN, disperse golden NP-RGL and disperse red 3B. The specific formula of the dyeing agent in this dyeing process is as follows:

Among them, the amount of dye refers to the weight percentage of the fabric, namely% (owf), and the dye bath ratio is 1:3.3. The process parameters of the dyeing machine are designed as follows: the output frequency of the main pump is 35Hz, the output frequency of the fan is 37.5Hz, and the speed of the cloth lifting wheel is 420rpm.

The dyeing process uses a dual-purpose dyeing machine with high temperature and high pressure and airflow overflow. When the dyeing vat temperature of the dyeing machine reaches 45℃, the dyeing auxiliaries and disperse dyes are injected respectively; when the dyeing auxiliaries are first added, direct extraction can be used in the dyeing vat Method of quick injection; when disperse dyes are added, a proportional injection method is required to control the flow rate of the dye into the dyeing vat. The injection time is 30min to prevent the injection from being too fast. The directness of the dye and the cloth surface will cause dyeing failure. Even the question.

The dyeing process is divided into a dyeing stage and a washing stage. Due to the atomization effect of the airflow mode, the overall volume of the dye bath needs to be small, so although the dyeing effect is good, the washing effect is poor. Therefore, in the dyeing stage, the dyeing machine is in air-flow mode, and in the washing stage, the dyeing machine is in air-liquid mode; this design can not only ensure a uniform dyeing effect, but also give the fabric "air-flow style", so that the overall water consumption is maintained At lower usage levels.

In order to ensure the best dyeing rate, the more the number of fabric and dye liquor exchanges per unit time, the more conducive to level dyeing. Therefore, the dyeing process is designed with a reasonable dyeing temperature process curve and cooperated with the main pump, fan, and The design of cloth lifting wheel parameters realizes better dyeing effect.

The dyeing temperature process curve shown in Figure 1. After the dyeing agent is injected, the temperature of the dyeing vat is raised to 85°C at a heating rate of 0.7°C/min. Dyeing starts at this temperature, holding for 5 minutes, and then heating up at 0.8°C/min Increase the temperature to 105°C, hold for 10 minutes, then increase the temperature to 115°C at a rate of 1.0°C/min, hold for 10 minutes, and then increase the temperature to 130°C at a rate of 1.0°C/min, hold for 80 minutes, and then at 1.2°C/min The cooling rate is lowered to 80℃, and then it enters the washing stage.

PTT fiber is also called elastic polyester. Due to the different number of methylene groups contained in the repeating unit of the macromolecular chain, the odd carbon effect makes the dyeing method of PTT/PET composite fiber fabric different from that of conventional PET. The dyeing transition temperature TD of PTT/PET composite fiber fabric (the turning point of dyeing speed is significantly accelerated) is 70-80℃ due to the addition of PTT fiber, which is about 10℃ lower than pure PET. Therefore, control the initial dyeing temperature of the PTT/PET composite fiber fabric at 85℃. At this temperature, put the fabric into the dyeing vat of the dyeing machine for initial dyeing, and keep it at this temperature for 5 minutes, and then use 0.8℃/min. The heating rate is increased, and the fabric can obtain a better initial dyeing effect. As shown in the dyeing temperature process curve shown in Figure 1, as the temperature in the dyeing vat rises and pressure begins, the movement of fabric molecular segments begins to intensify. The changes in the microstructure can form more "holes", and the increase in channels will cause Conducive to the diffusion of dyes. In order to prevent the rapid dyeing of dyes from causing coloring, it is necessary to reasonably control the heating rate, temperature level and corresponding holding time, and cooperate with ammonium sulfate, superfine fiber high temperature leveling agent TF-212K and color repairing agent S-8231, not only Ensure the uniformity of dyeing and prevent the formation of blemishes. After the heat preservation is over, decrease the glass transition temperature Tg of the fabric from 130°C (about 80°C in the curve shown in Figure 1), and the temperature should not be too fast to prevent the formation of creases.

The dyed fabric can be selected at about 80℃, such as colorless light, hue deviation, etc., and then the fabric can enter the washing stage. The first washing is carried out at 70°C with medium temperature water for 30 minutes, which can wash away most of the floating color and foam. After the first washing, the fabric is washed again at room temperature for 5 minutes. The washing effect is subject to the clear water in the tank without obvious foam. If the second washing does not meet the requirements, depending on the specific situation, continue to increase the number of washings until the drain of the tank is clear. After this dyeing process, the width of the fabric under the machine is about 154cm.

(3) Shaping process:

The fabric grey cloth dyed by the dyeing process enters the setting process. The styling process uses a styling machine and a styling treatment liquid to set and finish the dyed fabric. Each liter of the styling treatment liquid used in the styling process contains 20 grams of fluorine-based water and oil repellent water repellent TF-4109, 10 grams of antistatic agent and 5 grams of softener. The setting temperature of the setting process is 180°C, the vehicle speed is 45m/min, the fan speed is 1400r/min, and the setting machine performs 4 positive overfeeds.

After the dyeing process, the PTT/PET composite fiber fabric has a certain crepe-like "air-flow style". In order to maintain this style, the door width of the dyeing cylinder and the width of the setting machine are required, as well as the hand feeling and weight. For example, the setting temperature, overfeeding, vehicle speed, fan speed and other parameters of the setting machine mentioned above can make its "air flow style" stable.

The fabric after padding and setting treatment solution is stretched by the needle plates at fixed positions on both sides of the setting machine. As the temperature of the cloth surface increases, the molecular chains begin to reorganize, and the crystallinity and orientation degree increase. After cooling, the size Gain stability. Water repellent TF-4109 is an organic fluorine water repellent. After acting on the surface of the fabric, the surface free energy of the compound is significantly reduced due to the small cohesion between the C-F bond compounds. When the surface of the fabric has the effect of water droplets, its contact angle is usually above 90 degrees, which can obtain a better waterproof effect. At the same time, the antistatic agent is used to give the fabric an antistatic effect, and the softener is used to further improve the feel of the fabric.

Effect example

Dyeing effect

The sample from the customer is set as the standard sample, and the production sample of the present invention is set as the control sample. The L, a, and b values of the sample are measured with the Datacolor 600 computer colorimeter under D65 light source and 10 viewing angles, and then the color difference is calculated Value ΔE, test 3 times, take the average value. The comparison results are shown in Table 1.

Table 1 The color difference between the production sample of the present invention and the customer's standard sample

It can be seen from Table 1 that the production samples of the present invention processed by the dual-purpose dyeing machine with high temperature and high pressure airflow overflow, when compared with the samples from customers, the hue difference ΔH=0.04, the saturation difference ΔC=-0.12, The total color difference value ΔE=0.33, it can be judged that there is no difference in color between the production sample of the present invention and the standard sample in the visual scope. And under normal temperature conditions, the processed PTT/PET composite fiber has a prominent "airflow style", and the composite yarn in the weft direction of the fabric has obvious elastic effects, has a shape memory function, has good shape retention, and meets the requirements of wearing.

Color fastness

Color fastness includes rubbing fastness evaluation, discoloration evaluation and staining evaluation. Use Y571B dry and wet rubbing fastness tester and SW-12A washing fastness tester for testing. The rubbing fastness is measured according to GB/T3920-2008 "Textile color fastness test and rubbing fastness"; the discoloration evaluation is measured according to GB/T 250-2008 "Textile color fastness test and evaluation of the gray sample card for discoloration"; staining The evaluation is based on GB/T 251-2008 "Textile color fastness test to evaluate staining gray sample card". The specific results are shown in Table 2.

Table 2 Color fastness test of PTT/PET composite fiber fabric

It can be seen from Table 2 that the processed fabric of the present invention has a higher level of resistance to dry friction or wet friction, resistance to discoloration and staining, and meets the processing requirements of customers.

The invention processes the PTT/PET composite fiber fabric using a dual-purpose dyeing machine with high temperature and high pressure and airflow. By formulating a suitable dyeing process and its parameters, the processed fabric can have a good color and weight compared with the samples from customers. Presentability, and the “airflow style” of the cloth surface is prominent;

By rationally designing the pretreatment process, dyeing process, and setting process, the present invention can not only make the processed PTT/PET composite fiber fabric free of defects, but also the elasticity of the weft composite yarn is not destroyed, and the fabric has deformation memory. The color fastness meets customer requirements.

The above are only the embodiments of the present invention, and do not limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description and drawings of the present invention, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of the present invention.

Claims

A dyeing and finishing process capable of forming a crepe-like PTT/PET composite fiber fabric is characterized in that: the dyeing and finishing process includes a pre-treatment process, a dyeing process, and a setting process, and the pre-treatment process includes the first For the first open width OS desizing process and the second open width OS desizing process, the dyeing and finishing process steps are as follows:

(1) Pre-treatment process:

The first open-width OS desizing process uses an open-width desizing machine to perform the first open-width desizing treatment on the fabric grey cloth. The desizing aid formula used in the first open-width desizing process is as follows:

The second open-width OS desizing process uses an open-width desizing machine to perform a second open-width desizing treatment on the fabric grey fabric that has undergone the first open-width desizing treatment. The formula of sizing aid is the same as that of the first open-width desizing process;

(2) Dyeing process:

The pre-treated fabric grey cloth is dyed. The dyeing agent used in the dyeing process is composed of dyeing auxiliaries and dyes. The dyes are disperse dyes. The dyeing process is performed by a dual-purpose dyeing machine with high temperature and high pressure airflow overflow. Dyeing, when the dyeing vat temperature of the dyeing machine reaches 45℃, start to inject dyeing auxiliaries and disperse dyes; the dyeing process is divided into a dyeing stage and a washing stage. In the dyeing stage, the dyeing machine is in airflow mode, and in the washing stage, the dyeing machine It is a gas-liquid mode; the initial dyeing temperature of this dyeing process is 85℃, the holding time is 5min, and then the temperature is increased at a rate of 0.8℃/min based on the initial dyeing temperature;

(3) Shaping process:

In the setting process, the dyed fabric grey cloth is fixed by a setting machine and a setting treatment liquid.
The dyeing and finishing process for forming a crepe-like PTT/PET composite fiber fabric according to claim 1, characterized in that: in the dyeing stage of the dyeing process, after the dyeing agent is injected, the dyeing vat temperature is 0.7°C/ The temperature is increased to 85°C at a min heating rate, and dyeing starts at this temperature. The temperature is kept for 5 minutes, and then the temperature is increased to 105°C at a rate of 0.8°C/min, and the temperature is kept for 10 minutes, and then the temperature is increased to 115°C at a rate of 1.0°C/min. , Heat preservation for 10 minutes, then heat up to 130°C at a temperature increase rate of 1.0°C/min, hold for 80 minutes, then cool down to 80°C at a temperature decrease rate of 1.2°C/min, and then enter the washing stage, which is the dyeing of the fabric grey cloth Carry out medium-temperature water washing at a temperature of 70°C, the medium-temperature water washing time is 30 minutes, and then the room temperature water washing, the normal temperature water washing time is 5 minutes.
The dyeing and finishing process for forming a crepe-like PTT/PET composite fiber fabric according to claim 1, wherein the dyeing auxiliary in the dyeing process includes ammonium sulfate, superfine fiber high temperature leveling TF-212K and color repairing agent S-8231, the dosage of the three dyeing auxiliary agents in the dyeing agent is as follows:

Ammonium sulphate 0.8g/L,

Superfine fiber high temperature levelling agent TF-212K 0.6/L,

Color correction agent S-8231 0.2g/L.
The dyeing and finishing process for forming a crepe-like PTT/PET composite fiber fabric according to claim 3, wherein the dye in the dyeing agent of the dyeing process includes the following components:

Disperse Blue 2BLN 0.10%owf

Scattered golden NP-RGL 0.02%owf

Disperse Red 3B 0.06%owf.
The dyeing and finishing process for forming a crepe-like PTT/PET composite fiber fabric according to claim 1, characterized in that: the first open-width OS desizing process and the second open-width OS desizing process The temperature conditions of the pulping process are 95-98℃, and the vehicle speed is 45-55m/min.
A dyeing and finishing process capable of forming a crepe-like PTT/PET composite fiber fabric according to claim 1, wherein the bath ratio of the dyeing process is 1:3.3.
A dyeing and finishing process capable of forming a crepe-like PTT/PET composite fiber fabric according to claim 1, characterized in that: in the dyeing process, the process parameters of the dyeing machine are: the output frequency of the main pump is 35 Hz , The output frequency of the fan is 37.5Hz, and the speed of the cloth lifting wheel is 420rpm.
A dyeing and finishing process capable of forming a crepe-like PTT/PET composite fiber fabric according to claim 1, characterized in that: the styling treatment liquid used in the styling process contains 20 grams of fluorine per liter of the styling treatment liquid Water and oil repellent agent TF-4109, 10 grams of antistatic agent and 5 grams of softener.
A dyeing and finishing process capable of forming a crepe-like PTT/PET composite fiber fabric according to claim 1, wherein the setting temperature of the setting process is 180°C, the vehicle speed is 45m/min, and the fan speed At 1400r/min, the setting machine hits 4 positive overfeeds.
A dyeing and finishing process capable of forming a crepe-like PTT/PET composite fiber fabric according to claim 1, characterized in that: in the dyeing process, the dyeing auxiliaries are first injected into the dyeing vat in the form of direct pumping, and then , Disperse dyes are injected by proportional injection, and the injection time is 30min.