A composite functional polyester-spandex fabric and its production process

Abstract

The invention discloses a production process of composite functional polyester-spandex fabric and composite functional polyester-spandex fabric. The composite functional polyester-spandex fabric is woven from a special-section polyester yarn and a cationic polyester composite yarn, or from the special-section polyester yarn and a cationic polyester-spandex coated yarn. The woven fabric is dyed with disperse dyes and cationic dyes through a one-bath two-step dyeing process. Since cationic dyes can only dye cationic dyeable polyester, and disperse dyes can dye other polyester yarns, when the colors of cationic dyes and disperse dyes are slightly different, a visually hazy and soft heterochromatic gray fabric can be obtained, thereby realizing efficient dyeing of heterochromatic fabrics.

Description

Technical Field

[0001] Generally speaking, the present invention relates to the technical field of clothing fabrics. Specifically, it relates to a composite functional polyester-ammonia fabric and its production process. Background Art

[0002] In order to obtain fabrics of different colors, the existing processes usually adopt the yarn-dyed or yarn-spun process, where the yarns are dyed in different colors respectively and then woven. However, the dyeing reproducibility of this method is difficult to control, the input cost is high, and the production efficiency is low.

[0003] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure. Therefore, it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] A main object of the present invention is to overcome the above defects in the prior art and provide a production process for a composite functional polyester-ammonia fabric, including the following steps:

[0006] S1: Weave the profiled-section polyester yarn with the cationic polyester composite yarn and the spandex yarn, or weave the profiled-section polyester yarn with the cationic polyester-ammonia covered yarn into a grey fabric; wherein, the cationic polyester-ammonia covered yarn is formed by covering the cationic polyester composite yarn and the spandex yarn. Preferably, the cationic polyester-ammonia covered yarn is the cationic polyester composite yarn covering the spandex yarn.

[0007] The present invention uses the profiled-section polyester yarn, the cationic polyester composite yarn, the spandex yarn and the cationic polyester-ammonia covered yarn as weaving raw materials to weave a plain stitch, rib or mesh grey fabric that is light and breathable, thus being more conducive to the evaporation of sweat generated by the human body.

[0008] S2: Degrease the grey fabric, then wash it with water and pre-shrink and shape it.

[0009] S3: Dye the pre-shrunk and shaped grey fabric with disperse dyes and cationic dyes through a one-bath two-step dyeing process. Since cationic dyes only dye cationic-dyeable polyester, and disperse dyes can dye other polyester yarns, in this way, when the colors of the cationic dyes and the disperse dyes are slightly different, a visually hazy and soft fabric of different colors and ash can be obtained, thus realizing the efficient dyeing of fabrics of different colors.

[0010] S4: Pad and finish the dyed grey fabric.

[0011] S5: Pre-bake, bake, and heat-set the padded and finished grey fabric to obtain a composite functional polyester-ammonia fabric.

[0012] Preferably, in the step S1, when the grey fabric is in plain stitch or rib stitch, the specifications of the profiled-section polyester yarn are 75D / 72F or 150D / 144F, and the mass of the profiled-section polyester yarn is 40-50% of that of the grey fabric; the specifications of the cationic polyester composite yarn are 70-100D, and the mass of the cationic polyester composite yarn is 35-45% of that of the grey fabric; the specifications of the spandex yarn are 40-50D, and the mass of the spandex yarn is 10-20% of that of the grey fabric.

[0013] More preferably, when the grey fabric is in plain stitch, the specifications of the profiled-section polyester yarn are 150D / 144F, and the mass of the profiled-section polyester yarn is 40% of that of the grey fabric; the specifications of the cationic polyester composite yarn are 100D, and the mass of the cationic polyester composite yarn is 40% of that of the grey fabric; the specifications of the spandex yarn are 50D, and the mass of the spandex yarn is 20% of that of the grey fabric.

[0014] More preferably, in one embodiment, when the grey fabric is in plain stitch, the specifications of the profiled-section polyester yarn are 75D / 72F, and the mass of the profiled-section polyester yarn is 45% of that of the grey fabric; the specifications of the cationic polyester composite yarn are 70D, and the mass of the cationic polyester composite yarn is 45% of that of the grey fabric; the specifications of the spandex yarn are 50D, and the mass of the spandex yarn is 10% of that of the grey fabric.

[0015] More preferably, in another embodiment, when the grey fabric is in plain stitch, the specifications of the profiled-section polyester yarn are 75D / 72F, and the mass of the profiled-section polyester yarn is 50% of that of the grey fabric; the specifications of the cationic polyester composite yarn are 75D, and the mass of the cationic polyester composite yarn is 35% of that of the grey fabric; the specifications of the spandex yarn are 40D, and the mass of the spandex yarn is 15% of that of the grey fabric.

[0016] More preferably, when the grey fabric is in rib stitch, the specifications of the profiled-section polyester yarn are 75D / 72F, and the mass of the profiled-section polyester yarn is 50% of that of the grey fabric; the specifications of the cationic polyester composite yarn are 75D, and the mass of the cationic polyester composite yarn is 35% of that of the grey fabric; the specifications of the spandex yarn are 40D, and the mass of the spandex yarn is 15% of that of the grey fabric.

[0017] When the grey fabric is in mesh stitch, the specifications of the profiled-section polyester yarn are 75D / 72F, and the mass of the profiled-section polyester yarn is 50-60% of that of the grey fabric; the specifications of the cationic polyester-ammonia covered yarn are 75D / 40D, and the mass of the cationic polyester-ammonia covered yarn is 40-50% of that of the grey fabric.

[0018] More preferably, when the base fabric is of a mesh structure, the special cross-section polyester yarn has a specification of 75D / 72F, and the mass of the special cross-section polyester yarn is 60% of that of the base fabric; the cationic polyester-polyurethane covered yarn has a specification of 75D / 40D, and the mass of the cationic polyester-polyurethane covered yarn is 40% of that of the base fabric.

[0019] Preferably, in the step S1, a circular weft knitting machine with a cylinder diameter of 30" and a machine gauge of 36 needles / 25.4 mm is used for weaving. In the plain stitch structure and the rib stitch structure, the spandex is added to the weaving in an underlay manner. The feeding tension of the special cross-section polyester yarn is 6 - 8.5 / cN, the feeding tension of the cationic polyester composite yarn is 7 - 10 / cN, and the feeding tension of the spandex yarn is 3.5 - 4.5 / cN; in the mesh structure, the special cross-section polyester yarn and the cationic polyester-polyurethane covered yarn are interwoven, the feeding tension of the special cross-section polyester yarn is 6 - 8.5 / cN, and the feeding tension of the cationic polyester-polyurethane covered yarn is 6 - 7.5 / cN.

[0020] Preferably, in the step S1, the cross-section of the special cross-section polyester yarn is cross-shaped. The cross-shaped cross-section allows moisture to easily enter between the fibers, providing a channel for the migration of moisture. Therefore, the special cross-section polyester yarn has good moisture absorption and wicking properties. Antibacterial materials can also be added to the spinning dope of the special cross-section polyester yarn to make the special cross-section polyester yarn antibacterial.

[0021] Preferably, in the step S2, the degreasing process is as follows: the base fabric is placed in a degreasing solution at 100 - 110°C with a liquor ratio of 1:20 and treated for 25 - 30 min. The degreasing solution contains 1.0 - 1.5 g / L of NaOH, 1.0 - 1.5 g / L of degreasing agent, and 3.0 - 4.0 g / L of detergent. Specifically, the detergent can be, for example, "detergent 6501". The water washing process is as follows: the degreased base fabric is washed with warm water at 50 - 70°C and then dried at 90 - 110°C for 50 - 70 min.

[0022] The pre-shrinking and setting process is as follows: the base fabric after water washing is pre-set in a setting machine. The setting temperature is 180 - 185°C, the setting time is 40 - 60 s, and the overfeed is 15 - 20%.

[0023] Preferably, the step S3 specifically includes:

[0024] S31: Place the blank in a dyeing solution for dyeing. The dyeing solution contains 2 - 5 g / L of CH3COOH, 1.0 - 1.5 g / L of anti - coagulation leveling agent, and the concentration of disperse dye is 1.5 - 2.0% (the unit of dye concentration is o.w.f, which means in the dyeing and finishing process, the concentration is based on the weight of the fabric, relative to the percentage of the fabric). The dyeing temperature is 110 - 130 °C, the pH value is 4.0 - 4.5, and the dyeing time is 25 - 30 min. Specifically, the anti - coagulation leveling agent can be "anti - coagulation leveling agent TF - 207A", and the disperse dye can be SE - type dye or S - type dye.

[0025] S32: Add 1.5 - 2.0 g / L of anti - precipitation agent to the dyeing solution. The concentration of cationic dye is 2.5 - 3.0% (the unit of dye concentration is o.w.f, which means in the dyeing and finishing process, the concentration is based on the weight of the fabric, relative to the percentage of the fabric). Continue dyeing at 110 - 130 °C for 30 - 40 min. Specifically, the anti - precipitation agent can be a flocculating anti - precipitation agent, and the cationic dye can be an isolation - type cationic dye.

[0026] S33: After dyeing is completed, take out the blank when the temperature of the dyeing solution drops to 50 - 70 °C, wash it with cold water and then dry it.

[0027] S34: Immerse the dried blank in a cleaning solution for cleaning. The cleaning solution contains 1 - 1.5 g / L of NaOH and 2.0 - 3.0 g / L of reducing cleaning agent. The cleaning temperature is 80 - 90 °C, the bath ratio is 1:10, and the cleaning time is 10 - 15 min. Specifically, the reducing cleaning agent can be an acidic reducing cleaning agent sold by Jingyi New Materials.

[0028] S35: Wash the cleaned blank with warm water and then cold water in sequence and then dry it.

[0029] The present invention adopts a one - bath two - step dyeing process. By reasonably selecting and matching dyes, controlling the dyeing temperature, pH value, dyeing time, etc., the problem of aggregation and precipitation during the co - bath dyeing of disperse dye and cationic dye is minimized. The process flow is simple and water - saving.

[0030] Preferably, in S4, place the blank in a padding finishing solution for padding finishing. The padding finishing solution contains 10 - 20 g / L of smooth and elastic finishing agent and 20 - 30 g / L of moisture - absorbing and quick - drying agent. The padding method is one - dip and one - nip, and the liquor pick - up rate is 70 - 80%. Specifically, the smooth and elastic finishing agent can be smooth and elastic finishing agent TF - 437, and the moisture - absorbing and quick - drying agent can be moisture - absorbing and quick - drying agent FC - 226. The blank after padding finishing has the characteristics of antibacterial and quick - drying, smooth and crisp.

[0031] Preferably, in the step S5, the pre-baking temperature is 85-95°C, and the pre-baking time is 2-5 minutes; the baking temperature is 120-130°C, and the baking time is 5-10 minutes. After the grey fabric is pre-baked, it is more conducive to the padding finishing liquid adhering to the fabric.

[0032] Preferably, in the step S5, the process of heat setting is as follows: the grey fabric is placed in a heat setting machine for heat setting, the heat setting temperature is 180-185°C, the machine speed is 35-40 m / min, and the overfeed is 10-15%.

[0033] The present invention also provides a composite functional polyester-ammonia fabric, which is made by the production process of the above-mentioned composite functional polyester-ammonia fabric.

[0034] The advantages and positive effects of the composite functional polyester-ammonia fabric of the present invention are as follows:

[0035] The composite functional polyester-ammonia fabric of the present invention is woven from profiled-section polyester yarn, cationic polyester composite yarn, and spandex yarn, or from the profiled-section polyester yarn and cationic polyester-ammonia covered yarn. The woven fabric uses disperse dyes and cationic dyes, and is dyed by a one-bath two-step dyeing process. Since cationic dyes only dye cationic-dyeable polyester, and disperse dyes can dye other polyester yarns, when the colors of cationic dyes and disperse dyes are slightly different, a visually hazy and soft heterochromatic flower grey fabric can be obtained, thus realizing the efficient dyeing of heterochromatic fabrics. Description of the Drawings

[0036] By considering the following detailed description of the preferred embodiments of the present invention in conjunction with the drawings, various objectives, features, and advantages of the present invention will become more apparent. The drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components.

[0037] Figure 1 It is a dyeing process diagram of a composite functional polyester-ammonia fabric and its production process of the present invention. Detailed Embodiments

[0038] In the following description, many specific details are provided to give a full understanding of the embodiments of the present invention. However, those skilled in the art will realize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, materials, etc. can be adopted. In other cases, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0039] In the following description, numerous specific details are given to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, some well-known technical features are not described to avoid obscuring the present invention.

[0040] Example 1

[0041] This example provides a composite functional polyester-ammonia fabric, which is prepared according to the following steps:

[0042] (1) Weave an interlock fabric using a circular weft knitting machine with a cylinder diameter of 30” and a gauge of 36 needles / 25.4 mm, with profiled cross-section polyester yarn, cationic polyester composite yarn, and spandex yarn. The polyester has a specification of 75D / 72F, an incoming yarn tension of 6 / cN, the cationic polyester composite yarn has a specification of 70D, an incoming yarn tension of 8 / cN, the spandex has a specification of 50D, and the spandex is added to the weaving in an underlay manner with an incoming yarn tension of 4 / cN. The mass of the profiled cross-section polyester yarn is 45% of the fabric, the mass of the cationic polyester composite yarn is 45% of the fabric, and the mass of the spandex yarn is 10% of the fabric.

[0043] (2) Treat the fabric in a degreasing solution at 100°C with a liquor ratio of 1:20 for 25 minutes. The degreasing solution contains 1 g / L of NaOH, 1 g / L of degreasing agent, and 3 g / L of detergent 6501.

[0044] (3) Wash the degreased fabric with warm water at 50°C, and then dry it at 90°C for 50 minutes.

[0045] (4) Pre-set the washed fabric in a setting machine at a setting temperature of 180°C, a setting time of 40 s, and an overfeed of 15%.

[0046] (5) Place the set fabric in a dyeing solution for dyeing. The dyeing solution contains 2 g / L of CH3COOH, 1 g / L of anti-aggregation leveling agent TF-207A, and a concentration of 1.5% of SE type disperse dye. The dyeing temperature is 110°C, the pH value is 4, and the dyeing time is 25 minutes.

[0047] (6) Add 1.5 g / L of flocculant anti-precipitant and a concentration of 2.5% of cationic dye to the dyeing solution, and continue dyeing at 110°C for 30 minutes.

[0048] (7) Take out the fabric when the temperature of the dyeing solution drops to 50°C, wash it with cold water, and then dry it.

[0049] (8) Immerse the dried fabric in a cleaning solution for cleaning. The cleaning solution contains 1 g / L of NaOH and 2 g / L of reducing cleaning agent. The cleaning temperature is 80°C, the liquor ratio is 1:10, and the cleaning time is 10 minutes.

[0050] (9) The washed grey fabric is successively washed with warm water and cold water and then dried.

[0051] (10) The grey fabric after drying in the previous step is padded with a finishing solution. The finishing solution contains 10 g / L of elastic and slippery finishing agent TF-437 and 20 g / L of moisture-absorbing and quick-drying agent FC-226. The padding method is one-dip-one-roll, and the liquor pickup rate is 70%.

[0052] (11) The padded grey fabric is pre-dried. The pre-drying temperature is 85 °C and the pre-drying time is 2 min; the curing temperature is 120 °C and the curing time is 5 min.

[0053] (12) The pre-dried grey fabric is placed in a heat setting machine for heat setting to obtain a composite functional polyester-ammonia fabric. The heat setting temperature is 180 °C, the machine speed is 35 m / min, and the overfeed is 10%.

[0054] Example 2

[0055] This example provides a composite functional polyester-ammonia fabric, which is prepared according to the following steps:

[0056] (1) The profiled-section polyester yarn, the cationic polyester composite yarn, and the spandex yarn are woven into a plain-jersey grey fabric on a circular weft knitting machine with a cylinder diameter of 30” and a gauge of 36 needles / 25.4 mm. The specification of the polyester is 150D / 144F, the yarn feeding tension is 8.5 / cN, the specification of the cationic polyester composite yarn is 100D, the yarn feeding tension is 10 / cN, the specification of the spandex is 50D, and the spandex is added to the weaving in an under-yarn way with a yarn feeding tension of 4 / cN. The mass of the profiled-section polyester yarn is 40% of the grey fabric, the mass of the cationic polyester composite yarn is 40% of the grey fabric, and the mass of the spandex yarn is 20% of the grey fabric.

[0057] (2) The grey fabric is treated in a degreasing solution at 110 °C with a liquor ratio of 1:20 for 30 min. The degreasing solution contains 1.5 g / L of NaOH, 1.5 g / L of degreasing agent, and 4 g / L of detergent 6501.

[0058] (3) The degreased grey fabric is washed with warm water at 70 °C and then dried at 90 °C for 70 min.

[0059] (4) The grey fabric after washing is pre-set in a setting machine. The setting temperature is 185 °C, the setting time is 60 s, and the overfeed is 20%.

[0060] (5) The set grey fabric is dyed in a dyeing solution. The dyeing solution contains 5 g / L of CH3COOH, 1.5 g / L of anti-aggregation and level dyeing agent TF-207A, and the concentration of SE type disperse dye is 2%. The dyeing temperature is 130 °C, the pH value is 4.5, and the dyeing time is 30 min.

[0061] (6) Add 2 g / L of a flocculating anti-settling agent to the dyeing solution. The concentration of the cationic dye is 3%, and continue dyeing at 130 °C for 40 min.

[0062] (7) Take out the grey fabric when the temperature of the dyeing solution drops to 70 °C, wash it with cold water and then dry it.

[0063] (8) Immerse the dried grey fabric in the cleaning solution for cleaning. The cleaning solution contains 1.5 g / L of NaOH and 3 g / L of a reducing cleaning agent. The cleaning temperature is 90 °C, the bath ratio is 1:10, and the cleaning time is 15 min.

[0064] (9) Wash the cleaned grey fabric successively with warm water and cold water and then dry it.

[0065] (10) Immerse and pad the grey fabric obtained from the previous step in the padding finishing solution for padding and finishing. The padding finishing solution contains 20 g / L of a smooth and elastic finishing agent TF-437 and 30 g / L of a moisture-absorbing and quick-drying agent FC-226. The padding method is one-dip-one-roll, and the liquor pickup rate is 80%.

[0066] (11) Pre-dry the padded and finished grey fabric. The pre-drying temperature is 95 °C and the pre-drying time is 5 min; the curing temperature is 130 °C and the curing time is 10 min.

[0067] (12) Place the pre-dried grey fabric in a heat setting machine for heat setting to obtain a composite functional polyester-ammonia fabric. The heat setting temperature is 185 °C, the machine speed is 40 m / min, and the overfeed is 15%.

[0068] Example 3

[0069] This example provides a composite functional polyester-ammonia fabric, which is prepared according to the following steps:

[0070] (1) Weave a double ribbed grey fabric with an irregular cross-section polyester yarn, a cationic polyester composite yarn, and an ammonia yarn on a circular weft knitting machine with a cylinder diameter of 30" and a gauge of 36 needles / 25.4 mm. The polyester specification is 75D / 72F, the yarn feeding tension is 7 / cN, the cationic polyester composite yarn specification is 75D, the yarn feeding tension is 8.5 / cN, the ammonia specification is 40D, and the ammonia is added to the weaving in a covered yarn manner with a yarn feeding tension of 4.2 / cN. The mass of the irregular cross-section polyester yarn is 50% of the grey fabric, the mass of the cationic polyester composite yarn is 35% of the grey fabric, and the mass of the ammonia yarn is 15% of the grey fabric.

[0071] (2) Treat the grey fabric in a degreasing solution at 105 °C with a bath ratio of 1:20 for 28 min. The degreasing solution contains 1.2 g / L of NaOH, 1.2 g / L of a degreasing agent, and 3.5 g / L of a detergent 6501.

[0072] (3) Wash the degreased grey fabric with warm water at 60 °C, and then dry it at 100 °C for 60 min.

[0073] (4) Predetermine the shape of the grey fabric after water washing in a setting machine. The setting temperature is 185 °C, the setting time is 60 s, and the overfeed is 20%.

[0074] (5) Place the set grey fabric in a dyeing solution for dyeing. The dyeing solution contains 4 g / L of CH3COOH, 1.3 g / L of anti-aggregation leveling agent TF-207A, and the concentration of SE type disperse dye is 1.8%. The dyeing temperature is 120 °C, the pH value is 4.3, and the dyeing time is 28 min.

[0075] (6) Add 1.7 g / L of flocculating anti-precipitant to the dyeing solution, and the concentration of cationic dye is 2.8%. Continue dyeing at 120 °C for 35 min.

[0076] (7) Take out the grey fabric when the temperature of the dyeing solution drops to 60 °C, wash it with cold water and then dry it.

[0077] (8) Immerse the dried grey fabric in a cleaning solution for cleaning. The cleaning solution contains 1.2 g / L of NaOH and 2.5 g / L of reducing cleaning agent. The cleaning temperature is 85 °C, the bath ratio is 1:10, and the cleaning time is 12 min. The reducing cleaning agent can be an acidic reducing cleaning agent sold by Jingyi New Materials.

[0078] (9) Wash the cleaned grey fabric with warm water and then cold water in sequence and then dry it.

[0079] (10) Immerse and roll the grey fabric after the previous drying in a padding finishing solution for padding finishing. The padding finishing solution contains 15 g / L of smooth and elastic finishing agent TF-437 and 25 g / L of moisture absorption and quick drying agent FC-226. The padding method is one dip and one roll, and the liquor pickup rate is 75%.

[0080] (11) Pre-dry the grey fabric after padding finishing. The pre-drying temperature is 90 °C and the pre-drying time is 4 min; the curing temperature is 125 °C and the curing time is 8 min.

[0081] (12) Place the pre-dried grey fabric in a heat setting machine for heat setting to obtain a composite functional polyester-ammonia fabric. The heat setting temperature is 183 °C, the vehicle speed is 38 m / min, and the overfeed is 13%.

[0082] Example 4

[0083] This example provides a composite functional polyester-ammonia fabric, which is prepared according to the following steps:

[0084] (1) The special-shaped cross-section polyester yarn and the polyester-polyurethane covered yarn are woven into a mesh fabric on a circular weft knitting machine with a cylinder diameter of 30” and a gauge of 36 needles / 25.4 mm. The polyester-polyurethane covered yarn is a polyester-polyurethane composite yarn covering spandex yarn. The specification of the polyester is 75D / 72F, the yarn feeding tension is 8.5 / cN, the specification of the polyester-polyurethane covered yarn is 75D / 40D, and the yarn feeding tension is 7.5 / cN. The mass of the special-shaped cross-section polyester yarn is 60% of the fabric, and the mass of the polyester-polyurethane covered yarn is 40% of the fabric.

[0085] (2) The fabric is placed in a degreasing solution at 100°C with a bath ratio of 1:20 and treated for 25 minutes. The degreasing solution contains 1 g / L of NaOH, 1 g / L of degreasing agent, and 3 g / L of detergent 6501.

[0086] (3) The degreased fabric is washed with warm water at 50°C and then dried at 90°C for 50 minutes.

[0087] (4) The washed fabric is pre-set on a setting machine. The setting temperature is 180°C, the setting time is 40 s, and the overfeed is 15%.

[0088] (5) The set fabric is placed in a dyeing solution for dyeing. The dyeing solution contains 2 g / L of CH3COOH, 1 g / L of anti-aggregation leveling agent TF-207A, and the concentration of SE type disperse dye is 1.5%. The dyeing temperature is 110°C, the pH value is 4, and the dyeing time is 25 minutes.

[0089] (6) 1.5 g / L of flocculating anti-precipitant is added to the dyeing solution, and the concentration of cationic dye is 2.5%. Dyeing continues at 110°C for 30 minutes.

[0090] (7) When the temperature of the dyeing solution drops to 50°C, the fabric is taken out, washed with cold water and then dried.

[0091] (8) The dried fabric is immersed in a cleaning solution for cleaning. The cleaning solution contains 1 g / L of NaOH and 2 g / L of reducing cleaning agent. The cleaning temperature is 80°C, the bath ratio is 1:10, and the cleaning time is 10 minutes. The reducing cleaning agent can be an acidic reducing cleaning agent sold by Jingyi New Materials.

[0092] (9) The cleaned fabric is washed with warm water and then cold water in sequence and then dried.

[0093] (10) The fabric dried in the previous step is padded with a padding finishing solution. The padding finishing solution contains 10 g / L of smooth and elastic finishing agent TF-437 and 20 g / L of moisture absorption and quick drying agent FC-226. The padding method is one dip and one nip, and the liquor pickup rate is 70%.

[0094] (11) The padded fabric is pre-dried at a temperature of 85 °C for 2 minutes; the curing temperature is 120 °C and the curing time is 5 minutes.

[0095] (12) The pre-dried fabric is placed in a heat setting machine for heat setting to obtain a composite functional polyester-ammonia fabric. The heat setting temperature is 180 °C, the machine speed is 35 m / min, and the overfeed is 10%.

[0096] The parameters of the composite functional polyester-ammonia fabrics in Example 1, Example 2, Example 3, and Example 4 of the present invention are shown in Table 1. The water fastness, perspiration fastness, rubbing fastness, and soaping fastness of the fabrics in Table 1 are all higher than the standard values, that is, the water resistance, perspiration resistance, rubbing resistance, and soaping resistance of the fabrics have been improved. At the same time, the fabrics have strong bursting strength, no peculiar smell, low chemical substance content, and high antibacterial degree. Such composite functional polyester-ammonia fabrics are environmentally friendly, comfortable and durable.

[0097] Table 1

[0098]

[0099]

[0100] Of course, once the above description of the representative embodiments is carefully considered, those skilled in the art will readily understand that various modifications, additions, substitutions, deletions, and other changes can be made to these specific embodiments, and these changes are within the scope of the principles of the present invention. Therefore, the foregoing detailed description should be clearly understood to be given only by way of illustration and example, and the spirit and scope of the present invention are defined only by the appended claims and their equivalents.

Claims

1. A production process for composite functional polyester-spandex fabric, characterized by: The following steps are involved: S1: Weaving a polyester yarn with a special cross-section and a cationic polyester-spandex coated yarn into a grey cloth; wherein the cationic polyester-spandex coated yarn is formed by coating a cationic polyester composite yarn and a spandex yarn, the cationic polyester composite yarn is formed by twisting and stretching cationic dyeable polyester and ordinary polyester, and the grey cloth is a mesh structure; S2: degreasing the grey cloth, washing it with water, and pre-shrinking it; S3: dyeing the pre-shrunk grey fabric with disperse dyes and cationic dyes through a one-bath two-step dyeing process; S4: padding and finishing the dyed grey cloth; S5: pre-baking, baking and heat-setting the grey fabric after padding to obtain a composite functional polyester-spandex fabric; The S3 specifically includes: S31: placing the blank in a dyeing solution for dyeing, wherein the dyeing solution contains 2-5 g / L CH3COOH, 1.0-1.5 g / L anti-agglomeration leveling agent, 1.5-2.0% disperse dye concentration, dyeing temperature of 110-130°C, pH value of 4.0-4.5, and dyeing time of 25-30 min; S32: adding 1.5-2.0 g / L of an anti-precipitation agent to the dyeing solution, with a cationic dye concentration of 2.5-3.0%, and continuing dyeing at 110-130° C. for 30-40 min; S33: After dyeing is completed, when the temperature of the dyeing solution drops to 50-70° C., the grey cloth is taken out, washed with cold water and then dried; S34: immersing the dried grey cloth in a cleaning solution for cleaning, wherein the cleaning solution contains 1-1.5 g / L of NaOH and 2.0-3.0 g / L of a reducing cleaning agent, the cleaning temperature is 80-90° C., the bath ratio is 1:10, and the cleaning time is 10-15 min; S35: washing the cleaned grey cloth with warm water and cold water in sequence and then drying it.

2. The production process of a composite functional polyester-spandex fabric according to claim 1, characterized in that: When the grey cloth is a mesh structure, the specification of the special-shaped cross-section polyester yarn is 75D / 72F, and the mass of the special-shaped cross-section polyester yarn is 50-60% of the grey cloth; the specification of the cationic polyester-spandex coated yarn is 75D / 40D, and the mass of the cationic polyester-spandex coated yarn is 40-50% of the grey cloth.

3. The production process of a composite functional polyester-spandex fabric according to claim 1, characterized in that: In the S1, a circular knitting machine with a cylinder diameter of 30", a machine gauge of 36 needles / 25.4mm is used for weaving. In the mesh structure, the special-shaped cross-section polyester yarn and the positive polyester-spandex coated yarn are interwoven. The yarn feeding tension of the special-shaped cross-section polyester yarn is 6-8.5 / cN, and the yarn feeding tension of the positive polyester-spandex coated yarn is 6-7.5 / cN.

4. The production process of a composite functional polyester-spandex fabric according to claim 1, characterized in that: In S1, the cross section of the special-shaped cross-section polyester yarn is a cross shape.

5. The production process of a composite functional polyester-spandex fabric according to claim 1, characterized in that: In S2, the degreasing process is: placing the blank in a degreasing solution at 100-110° C. and a bath ratio of 1:20 for 25-30 minutes, wherein the degreasing solution contains 1.0-1.5 g / L NaOH, 1.0-1.5 g / L degreasing agent, and 3.0-4.0 g / L detergent; The washing process is as follows: washing the degreased grey cloth with warm water at 50-70°C, and then drying at 90-110°C for 50-70 minutes; The pre-shrinking and shaping process is as follows: the washed grey cloth is pre-shaped in a shaping machine, the shaping temperature is 180-185° C., the shaping time is 40-60 seconds, and the overfeeding amount is 15-20%.

6. The production process of a composite functional polyester-spandex fabric according to claim 1, characterized in that: In S4, the blank is placed in a padding finishing liquid for padding finishing. The padding finishing liquid contains 10-20 g / L of a slippery and elastic finishing agent and 20-30 g / L of a moisture absorbing and quick-drying agent. The padding method is one dip and one padding, and the padding rate is 70-80%.

7. The production process of a composite functional polyester-spandex fabric according to claim 1, characterized in that: In S5, the pre-baking temperature is 85-95°C, and the pre-baking time is 2-5 minutes; the baking temperature is 120-130°C, and the baking time is 5-10 minutes.

8. The production process of a composite functional polyester-spandex fabric according to claim 1, characterized in that: In S5, the heat setting process is: placing the blank into a heat setting machine for heat setting, the heat setting temperature is 180-185°C, the machine speed is 35-40m / min, and the overfeed amount is 10-15%.

9. A composite functional polyester-spandex fabric, characterized by: The composite functional polyester-spandex fabric is made by the production process of the composite functional polyester-spandex fabric according to any one of claims 1 to 8.

Images