Cloth with breathable film

Abstract

The invention discloses a fabric with a breathable film, which is prepared by the following steps: S1, selecting a chinlon spandex or polyester spandex four-way stretch fabric to make a surface fabric layer, using a nanofiber material based on polyurethane to prepare a breathable film layer, using a special fiber fabric with moisture absorption, sweat releasing and light heat storage functions to prepare a base fabric layer, and using the breathable film layer to prepare a breathable film layer; selecting an environment-friendly water-repellent additive as a waterproof layer of the shell fabric, and selecting a hot melt adhesive for bonding different layers; according to the invention, the nylon spandex or polyester spandex four-side elastic shell fabric layer with a telescopic characteristic is selected, then an environment-friendly water-repellent auxiliary agent is applied to form a waterproof layer, the breathable nanofiber membrane layer is prepared by an electrospinning technology, the base fabric layer with moisture absorption and sweat releasing functions is combined, and specific material selection and a fine process flow are adopted, so that the moisture absorption and sweat releasing performance of the fabric is improved. The fabric creatively integrates the characteristics of wind resistance, air permeability, water resistance and good elasticity keeping, effectively solves the contradiction between the heat retention property and the air permeability of the traditional fabric, and improves the wearing comfort and practicability at the same time.

Description

Technical Field

[0001] The invention relates to a cloth with a breathable film, belonging to the technical field of cloth. Background Art

[0002] The fabrics for business men's trousers are usually required to have a soft texture, good wrinkle resistance and high color stability. Business occasions require neat attire, so the fabrics for men's trousers need to have a certain gloss and smoothness. The fabrics need to be breathable and moisture-absorbent to remain comfortable during long-term wear. Business occasions often involve long meetings and work, so these characteristics are particularly important. High-quality fabrics need to be wear-resistant and durable, because business attire is often worn frequently as daily office wear. The fabrics should be easy to wash and maintain to keep the clothes fresh and neat.

[0003] The fabrics currently used to make business men's trousers mainly include natural or synthetic fibers such as wool, cotton, and polyester. Wool is the traditional choice of fabric for high-end business men's trousers because it has good wrinkle resistance and heat retention, while being moisture-wicking and breathable. Cotton, as a natural fiber, is also widely used in business trousers to provide breathability and comfort. Polyester is widely used due to its low cost, wrinkle resistance, and durability, and is often blended with other fibers to improve fabric performance.

[0004] However, existing fabrics have certain shortcomings in terms of shape and functionality. Traditional single-layer fabrics or two-layer composite fabrics do not have good windproof effects, which may reduce the wearer's comfort in cold or windy environments. In order to improve windproof performance, three-layer composite fabrics may be used, but such designs often hinder the removal of internal moisture, causing stuffiness and discomfort, especially in warm or humid climates. And three-layer composite fabrics will lose almost all elasticity, thus limiting the possibility of manufacturing highly elastic business men's trousers. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a fabric with a breathable membrane to solve the problems of the prior art.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A cloth with a breathable film, comprising the following steps:

[0008] S1, choose nylon-spandex or polyester-spandex four-way stretch fabric to make the surface fabric layer, use polyurethane-based nanofiber material to prepare the breathable membrane layer, use special fiber fabric with moisture absorption and perspiration and light heat storage function to prepare the base fabric layer, choose environmentally friendly water-repellent additives for the waterproof layer of the surface fabric, and use hot melt adhesive for bonding between different layers;

[0009] S2, using a roller coating or spraying process, the waterproofing agent is evenly coated on the outer side of the surface fabric layer, and then heat-curing treatment is performed to form a waterproof layer on both the front and back sides of the surface fabric;

[0010] S3, preparing a solution containing polyurethane, spinning the solution into nanofibers using electrospinning technology at a specific voltage (12-20 kV) and a jet speed (0.1-1.0 mL / h), and collecting the formed membrane to form a nanofiber membrane layer;

[0011] Among them, it is necessary to control environmental conditions (temperature, humidity) to ensure that the quality and performance of the fiber membrane meet the requirements.

[0012] S4, applying hot melt adhesive to the waterproof layer on any side of the surface fabric layer by using a spot-dotted or grid-coated technique to bond the prepared nanofiber membrane layer to the waterproof layer;

[0013] S5, using the same on-demand or grid coating technology on one side of the moisture wicking bottom fabric layer, and again using hot melt adhesive, to bond the bottom fabric layer to the other side of the nanofiber membrane layer to form an initial fabric;

[0014] S6, using a heat press machine, at an appropriate temperature of 120-160°C and a pressure of 200-500 kPa, heat press for 1-3 seconds to accurately press the layers of material to which the hot melt adhesive has been applied, to ensure uniform bonding between the layers of material and overall performance;

[0015] S7, trimming and washing the composite fabric to remove residual chemicals on the surface and adjust the fabric feel, thereby completing the fabric preparation.

[0016] As a further improvement, in step S2, the waterproofing agent is evenly applied to the outer side of the surface fabric layer by a rolling or spraying process, and then a heat curing treatment is performed to form a waterproof layer on both the front and back sides of the surface fabric, as follows;

[0017] S21, ensure that the surface fabric is clean and free of dust and oil stains;

[0018] S22, select appropriate rollers and jets to coat the opposite fabric layer;

[0019] S23, during the heat curing process of the coated surface cloth layer, the temperature is set at 150-170°C and the curing time is between 1-2 minutes.

[0020] As a further improvement, in step S22, the coating amount is controlled at 20 g / m2;

[0021] In step S23, the face cloth passes through a preset temperature of 160° C. for 90 seconds.

[0022] As a further improvement, in step S3, a solution containing polyurethane is prepared, and the solution is spun into nanofibers by electrospinning technology at a specific voltage (12-20 kV) and a jet speed (0.1-1.0 mL / h), and the resulting film is collected to form a nanofiber film layer, and the specific steps are as follows;

[0023] S31, nanofiber preparation;

[0024] S311, using polyvinyl alcohol as the polymer basis, the concentration was set to 8wt% dissolved in distilled water, and the electrospinning parameters were set to voltage 12-20 kV, injection speed 0.1-1.0 mL / h, collection distance 10-20 cm, and ambient temperature 20-25°C;

[0025] S312, preparing a nanofiber layer by adjusting voltage and jet speed;

[0026] S32, Preparation of composite materials:

[0027] S321, nonwoven fabric is selected as a reinforcing substrate with a thickness of about 0.1-0.5 mm as a support layer;

[0028] S322, using environmentally friendly glue to connect the support layer and the nanofiber layer, the thickness is controlled at 0.01-0.05 mm, and laid on the support layer in a grid or dot pattern, and then bonded to the nanofiber layer;

[0029] S323, using a hot pressing device, the temperature is set between 120-150°C, the pressure is about 1-5MPa, and the time is 1-5 minutes, so that the support layer and the nanofiber layer are stably connected to form a nanofiber membrane layer.

[0030] As a further improvement, in step S4, a hot melt adhesive is applied to the waterproof layer on any side of the surface fabric layer by using a spot-dotted or grid-coated technique to bond the prepared nanofiber membrane layer thereto, and the specific steps are as follows;

[0031] S41, selecting a hot melt adhesive suitable for the surface fabric material and the nanofiber membrane layer;

[0032] S42, applying the hot melt adhesive to the surface fabric layer by using a dot-by-dot technique, wherein the dots applied may be dots, stars or other shapes.

[0033] As a further improvement, in step S5, the same on-demand or grid coating technology is used on one side of the moisture wicking bottom fabric layer, and hot melt adhesive is used again to bond the bottom fabric layer to the other side of the nanofiber membrane layer to form an initial fabric. The specific steps are as follows:

[0034] S51, performing a moisture absorption and perspiration treatment on the base fabric to form a bottom layer;

[0035] S52, selecting glue dots of appropriate size and spacing, distributing the glue dots in a grid or dot pattern on the base fabric layer, and bonding the glue dots to the other side of the nanofiber membrane layer to form an initial fabric.

[0036] As a further improvement, in step S51, the base fabric is subjected to moisture absorption and perspiration treatment to form a bottom layer, and the specific steps are as follows;

[0037] S511, select a special synthetic fiber with good moisture absorption and perspiration wicking performance, use four-channel fiber spinning technology to form a fiber with a porous structure to increase the surface area of ​​the fiber, thereby improving its ability to absorb and diffuse water molecules, and enhancing the fiber's moisture conduction and perspiration wicking performance. In this embodiment, the base fabric material is polyester, and modified polyester can be particularly selected;

[0038] S512, the key to improving wearing comfort in applications such as sportswear is to form fabrics by using specific knitted or woven structures to enhance their breathability and ability to quickly evaporate water vapor. Three-dimensional structured fabrics are particularly good in this regard because they can form an effective microclimate between the skin and the fabric, accelerating the discharge and evaporation of sweat, thereby keeping the body dry and comfortable;

[0039] S513 uses moisture wicking finishing agents through impregnation, baking, antibacterial and other processes to form a complete base fabric layer.

[0040] The beneficial effects of the present invention are:

[0041] The present invention starts with selecting a nylon-ammonia or polyester-ammonia four-sided stretch fabric layer with stretching properties, then applying an environmentally friendly water-repellent additive to form a waterproof layer, preparing a breathable nanofiber membrane layer through electrospinning technology, combining a bottom fabric layer with moisture absorption and perspiration function, and achieving precise bonding of each layer of material through hot pressing technology, and finally performing trimming and washing to complete the preparation of the fabric, thereby ensuring the high performance and excellent quality of the finished fabric. By adopting specific material selection and sophisticated process flow, this fabric innovatively combines the characteristics of windproof, breathable, waterproof and maintaining good elasticity, effectively solving the contradiction between warmth retention and breathability of traditional fabrics, while improving the comfort and practicality of wearing. This multifunctional design not only adapts to the harsh external environment, but also meets the needs of modern consumers for both functionality and comfort of clothing, especially in coping with changing climates and meeting the challenges of wearing in business and casual occasions. It shows great advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a diagram of the preparation steps of a cloth with a breathable film according to the present invention.

[0044] Figure 2 It is a schematic diagram of the layered structure of a cloth with a breathable film according to the present invention.

[0045] Figure 3 It is a schematic diagram of the three-dimensional structure of a cloth with a breathable membrane according to the present invention.

[0046] 1. Waterproof layer; 2. Surface fabric layer; 3. Hot melt adhesive; 4. Nanofiber membrane layer; 5. Bottom layer. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] Existing fabrics have certain shortcomings in terms of shape and functionality. Traditional single-layer fabrics or two-layer composite fabrics do not have good windproof effects, which may reduce the wearer's comfort in cold or windy environments. In order to improve windproof performance, three-layer composite fabrics may be used, but such designs often hinder the removal of internal moisture, causing stuffiness and discomfort, especially in warm or humid climates. And three-layer composite fabrics will lose almost all stretch, thus limiting the possibility of manufacturing highly stretchy business men's pants.

[0050] Reference Figure 1-3 As shown, a method for preparing a cloth with a breathable membrane, the steps are as follows:

[0051] S1, select nylon-spandex or polyester-spandex four-way stretch fabric to make the surface fabric layer 2, polyurethane-based nanofiber material will be used to prepare the breathable membrane layer, special fiber fabric with moisture absorption and perspiration and light heat storage function will be used to prepare the bottom fabric layer, select environmentally friendly water-repellent additives to make the surface fabric waterproof layer 1, and select hot melt adhesive 3 for bonding between different layers;

[0052] S2, using a roller coating or spraying process, the waterproofing agent is evenly coated on the outer side of the surface fabric layer 2, and then heat-curing treatment is performed to form a waterproof layer 1 on both the front and back sides of the surface fabric;

[0053] S3, preparing a solution containing polyurethane, spinning the solution into nanofibers using electrospinning technology at a specific voltage (12-20 kV) and a jet speed (0.1-1.0 mL / h), and collecting the resulting film to form a nanofiber film layer 4;

[0054] Among them, it is necessary to control environmental conditions (temperature, humidity) to ensure that the quality and performance of the fiber membrane meet the requirements.

[0055] S4, applying hot melt adhesive 3 to the waterproof layer 1 on any side of the surface fabric layer 2 by using a spot-dotted or grid-coated technique, and bonding the prepared nanofiber membrane layer 4 thereto;

[0056] S5, using the same on-demand or grid coating technology on one side of the moisture wicking bottom fabric layer, and again using the hot melt adhesive 3, the bottom fabric layer is bonded to the other side of the nanofiber membrane layer 4 to form an initial fabric;

[0057] S6, using a heat press machine, at an appropriate temperature of 120-160°C and a pressure of 200-500 kPa, heat press for 1-3 seconds to accurately press the layers of material to which the hot melt adhesive 3 has been applied, to ensure uniform bonding between the layers of material and overall performance;

[0058] S7, trimming and washing the composite fabric to remove residual chemicals on the surface and adjust the fabric feel, thereby completing the fabric preparation.

[0059] Starting with a nylon-ammonia or polyester-ammonia four-sided stretch fabric layer 2 with stretch properties, then applying an environmentally friendly water-repellent additive to form a waterproof layer 1, preparing a breathable nanofiber membrane layer 4 through electrospinning technology, combining a bottom fabric layer with moisture absorption and perspiration function, and achieving precise bonding of each layer of material through hot pressing technology, and finally trimming and washing to complete the fabric preparation, ensuring the high performance and excellent quality of the finished fabric. Through the use of specific material selection and sophisticated process flow, this fabric innovatively combines the characteristics of windproof, breathable, waterproof and maintaining good elasticity, effectively solving the contradiction between warmth retention and breathability of traditional fabrics, while improving the comfort and practicality of wearing. This multifunctional design not only adapts to the harsh external environment, but also meets the needs of modern consumers for both functionality and comfort in clothing, especially in coping with changing climates and meeting the challenges of wearing in business and casual occasions. It has shown great advantages.

[0060] In step S1, a nylon-spandex or polyester-spandex four-way stretch fabric is selected to make the surface fabric layer 2, a polyurethane-based nanofiber material is used to prepare a breathable membrane layer, a special fiber fabric with moisture absorption and perspiration removal and light heat storage functions is used to prepare the base fabric layer, an environmentally friendly water-repellent additive is selected to make the surface fabric waterproof layer 1, and a hot melt adhesive 3 is selected to bond different layers;

[0061] By selecting nylon-spandex or polyester-spandex four-way stretch fabric as the surface fabric layer 2. These fabrics can provide good wearing comfort and free movement due to their excellent elasticity and recovery.

[0062] Among them, you need to ensure that the selected surface fabric has enough elasticity to adapt to different body shapes and exercise amounts, while maintaining a good appearance and not easily wrinkled.

[0063] In addition, the inner and outer layers of the face fabric may require different texture designs. The outer layer should have higher wear resistance, while the inner layer should focus more on soft touch and reduce friction.

[0064] Therefore, in this embodiment, a four-way stretch fabric of a mixture of nylon and spandex or a mixture of polyester and spandex is selected as the face layer.

[0065] The PU-based nanofiber membrane layer 4 has a microporous structure, which can allow water vapor to pass through while blocking the penetration of liquid water.

[0066] The membrane layer must be highly breathable so that the body's moisture and heat can be quickly discharged, improving the wearing comfort. While maintaining breathability, the membrane layer must be sufficiently waterproof to cope with bad weather.

[0067] Special fiber fabrics with moisture absorption and perspiration and light heat storage functions are used as the base fabric layer. The fabrics used for the base fabric layer should be special fibers that can effectively absorb moisture and perspiration, and have a certain light heat storage capacity to accumulate and utilize the heat emitted by the human body to provide additional warmth.

[0068] Among them, the base fabric layer should be soft and non-irritating to the skin to increase wearing comfort.

[0069] Moreover, it ensures that the base fabric quickly absorbs sweat from the skin surface and dissipates it through the sweat-wicking function of the fabric.

[0070] For environmentally friendly water-repellent additives, choose those that do not contain PFCs (perfluorinated compounds) to meet environmental protection requirements. It is necessary to ensure that the fabric has long-lasting waterproof ability after water-repellent treatment and remains effective after multiple washings. The essential characteristics of the fabric, such as elasticity and breathability, should not be affected.

[0071] For interlayer bonding, a hot melt adhesive 3 compatible with the fabric is selected, usually PU-based, to ensure good bonding with the face fabric, breathable membrane layer and base fabric layer.

[0072] It is necessary to ensure that the hot melt adhesive 3 is evenly applied at the appropriate temperature and pressure and forms a stable bond after cooling without bubbles or wrinkles. The bonding effect should be able to withstand repeated cleaning, maintain the fixation between the layers of material and the overall function of the composite fabric, and the bonding process should not damage any properties of the single layer material.

[0073] In step S2, a waterproofing agent is evenly applied to the outer side of the surface fabric layer 2 by a rolling or spraying process, and then a thermal curing treatment is performed to form a waterproof layer 1 on both the front and back sides of the surface fabric, as follows;

[0074] S21, ensure that the surface fabric layer 2 is clean and free of dust and oil stains; this can improve the adhesion effect of the waterproofing agent.

[0075] S22, use a suitable roller to roll-coat the opposite fabric layer 2 to ensure that the waterproofing agent is evenly distributed on the fabric.

[0076] Among them, controlling the viscosity of the additive and the pressure of the roller to avoid excessive coating that leads to a decrease in the air permeability of the surface fabric, as well as controlling the amount of additive coating are crucial to the final waterproof effect.

[0077] S23, during the heat curing process of the coated surface fabric layer 2, the temperature is set at 150-170°C and the curing time is between 1-2 minutes. Too high a temperature or too long a curing time may cause damage to the fabric, while too low a temperature or too short a curing time may cause incomplete curing of the waterproofing agent.

[0078] The viscosity of the additive is determined through experiments, the diluent ratio is appropriately adjusted, and then the waterproof additive is evenly coated by adjusting the roller pressure. The coating amount is controlled at 20g / m2. The surface cloth passes through a heat curing oven with a preset temperature of 160°C and a duration of 90 seconds.

[0079] In another embodiment, a spray gun for uniform spraying may be selected, and it is ensured that the spraying pressure and the nozzle type are suitable for the waterproofing agent used.

[0080] Among them. Control the distance and angle of spraying to ensure uniform coverage and avoid missing or excessive concentration. Adjust the moving speed during spraying so that the coating is not too thick or too thin.

[0081] In the heat curing process, like the roller coating process, the heat curing after spraying also requires precise control of temperature and time.

[0082] If the spraying process is adopted, an automatic spray gun is used, which is set at a distance of 15 cm from the fabric, and the nozzle is evenly swept across the fabric surface at a 45° angle. The sprayed fabric is also sent to the heat curing oven, and the curing conditions are the same as those of roller coating.

[0083] Through the above precise process control, it can be ensured that the jacket fabric has uniform and lasting waterproof performance while maintaining the breathability and elasticity of the fabric.

[0084] In step S3, a solution containing polyurethane is prepared, and the solution is spun into nanofibers by electrospinning technology at a specific voltage (12-20 kV) and a jet speed (0.1-1.0 mL / h), and the resulting film is collected to form a nanofiber film layer 4. The specific steps are as follows;

[0085] S31, nanofiber preparation;

[0086] S311, with polyvinyl alcohol (PVA) as the polymer basis, the concentration was set to 8wt% (weight percentage), dissolved in distilled water, and the electrospinning parameters were set to voltage 12-20 kV, injection speed 0.1-1.0 mL / h, which affects the production rate and diameter of the fiber, collection distance 10-20 cm, and ambient temperature 20-25°C;

[0087] S312, by adjusting the voltage and the jet speed to prepare the nanofiber layer, the diameter of the fiber can be controlled to be generally between 100 nanometers and several micrometers. Higher voltage and lower jet speed tend to produce finer fibers.

[0088] Among them, the placement density of the fibers can be controlled by adjusting the collection time.

[0089] Voltage, which is adjusted according to the specific conditions of the laboratory to form a stable spinneret. Jet speed, which affects the production rate and diameter of the fiber. Collection distance, which is the distance from the nozzle to the collector (usually a metal conductive plate or a rotating drum). Environmental conditions, humidity should be kept as low as possible to avoid too fast evaporation of the solvent.

[0090] S32, Preparation of composite materials:

[0091] S321, non-woven fabric is selected as the reinforcing substrate with a thickness of about 0.1-0.5 mm as the support layer. It should have sufficient mechanical strength and air permeability;

[0092] S322, uses environmentally friendly glue to connect the support layer and the nanofiber layer, the thickness is controlled at 0.01-0.05 mm, and is laid on the support layer in a grid or dot pattern, and then bonded to the nanofiber layer.

[0093] It is necessary to ensure that the adhesive does not severely block the nanofiber pores to maintain breathability.

[0094] S323, using a hot pressing device, the temperature is set between 120-150°C, the pressure is about 1-5MPa, and the time is 1-5 minutes, so that the support layer and the nanofiber layer are stably connected to form a nanofiber membrane layer 4.

[0095] The nanofiber layer preferably accounts for 10% to 30% of the thickness of the entire composite membrane, and the support layer usually accounts for 70% to 90% of the thickness of the entire composite structure.

[0096] After testing, the air permeability of nanofibers is 15-30 (mm / s).

[0097] In step S4, a hot melt adhesive 3 is applied to the waterproof layer 1 on any side of the surface fabric layer 2 by using a spot-drying or grid-coating technique, and the prepared nanofiber membrane layer 4 is bonded thereto. The specific steps are as follows;

[0098] S41, selecting a hot melt adhesive 3 suitable for the surface cloth material and the nanofiber membrane layer 4;

[0099] S42, applying the hot melt adhesive 3 to the surface fabric layer by using a dot-by-dot technique, wherein the dots of the adhesive may be circles, stars or other shapes, ensuring that the adhesive dots are evenly distributed to avoid aggregation.

[0100] Among them, the choice of hot melt adhesive 3 in S41, such as polyurethane hot melt adhesive 3, has excellent elasticity, wear resistance and strong bonding ability. It can also provide good water resistance and heat resistance, suitable for outdoor clothing and technical textiles.

[0101] Polyethylene hot melt adhesive 3, for general bonding needs, PE hot melt adhesive 3 provides good adhesion and sufficient strength, high cost-effectiveness. It is more suitable for occasions where the bonding strength requirements are not very high.

[0102] Polyamide hot melt adhesive 3 has good chemical resistance and strong adhesion, while maintaining a certain degree of flexibility and toughness, and is suitable for application environments that require oil resistance and chemical resistance.

[0103] Polyester hot melt adhesive 3, with excellent heat resistance and strong bonding ability, good aging resistance, suitable for applications requiring high heat resistance and long-term durability.

[0104] Ethylene-vinyl acetate copolymer hot melt adhesive 3 has good adhesion and flexibility. It is one of the most commonly used hot melt adhesives 3. It has a relatively low cost and is suitable for general bonding needs, especially in scenarios where cost control is relatively important.

[0105] In this embodiment, polyurethane hot melt adhesive 3 is selected for bonding the nanofiber membrane layer 4, because it provides good bonding performance, elasticity, and resistance to water and environmental influences, and is suitable for use in various environmental conditions.

[0106] The grid coating technology designs the density and line width of the grid according to the required bonding strength and air permeability. And ensure the continuity of the grid to avoid breakage or excessive accumulation. Check the surface of the grid after coating to ensure that no hot melt adhesive 3 overflows into the unwanted area.

[0107] In this embodiment, polyurethane hot melt adhesive 3 is selected. Using the dot coating technology, glue dots with a diameter of 1 mm are evenly distributed on the surface of the material, and the distance between dots is set to 5 mm, which ensures the air permeability and waterproofness of the fabric.

[0108] When applying the hot melt adhesive 3, control the temperature at 160°C and ensure uniform pressure and moderate speed.

[0109] The bonded fabric is passed through a hot pressing device and pressurized at 130°C and 2MPa for 3 minutes, ensuring that the nanofiber membrane layer 4 is firmly bonded to the nylon face cloth without destroying the fiber structure.

[0110] In step S5, the same on-demand or grid coating technology is used on one side of the moisture wicking base fabric layer, and the hot melt adhesive 3 is used again to bond the base fabric layer to the other side of the nanofiber membrane layer 4 to form an initial fabric. The specific steps are as follows:

[0111] S51, performing moisture absorption and perspiration treatment on the base fabric to form a bottom layer 5;

[0112] S511, select a special synthetic fiber with good moisture absorption and perspiration wicking performance, use four-channel fiber spinning technology to form a fiber with a porous structure to increase the surface area of ​​the fiber, thereby improving its ability to absorb and diffuse water molecules and enhance the fiber's moisture conduction and perspiration wicking performance. In this embodiment, the base fabric material is polyester, and modified polyester can be selected in particular.

[0113] S512, the key to improving wearing comfort in applications such as sportswear is to form fabrics using specific knitted or woven structures to enhance their breathability and ability to quickly evaporate water vapor. Three-dimensional structured fabrics are particularly good in this regard because they can form an effective microclimate between the skin and the fabric, accelerating the discharge and evaporation of sweat, thereby keeping the body dry and comfortable.

[0114] By adopting three-dimensional weaving technology, finished or semi-finished fabrics with complex shapes and structures can be formed in a single weaving process. This technology can seamlessly integrate different functional areas (breathability, elasticity, protection areas, etc.).

[0115] S513 uses moisture wicking finishing agents through impregnation, baking, antibacterial and other processes to form a complete base fabric layer.

[0116] This treatment step can improve the hydrophilicity of the fiber surface and promote the rapid absorption and external discharge of water.

[0117] In this embodiment, the moisture absorption and perspiration removal finishing agent adopts a cross-linked polymer, specifically a silane cross-linking agent.

[0118] The textile is immersed in a solution containing a moisture wicking finishing agent for 15-30 minutes, and the excess immersion liquid in the textile is squeezed out by a rolling wheel to ensure that the textile is evenly moistened, and then enters the baking stage. The baking temperature is set between 130°C and 160°C, and the time is about 1 to 3 minutes. It should be noted that too high a temperature or too long a time may damage the textile or affect the natural properties of the fiber. In this embodiment, the baking temperature is specifically set to 135°C and the time is 2 minutes.

[0119] At the same time, in order to improve wearing comfort, the base fabric is often treated with antibacterial and anti-odor treatment while being moisture-absorbing and perspiration-wicking to reduce the odor produced by the decomposition of sweat.

[0120] Moisture wicking backing fabric treatment technology is the result of continuous innovation in the textile field. The above steps and methods can be adjusted and optimized according to specific materials, required functional performance and cost factors.

[0121] Among them, the base fabric is subjected to moisture absorption and perspiration treatment, and an adhesive that is compatible with the treatment agent and does not affect the performance of the base fabric needs to be selected.

[0122] S52, selecting glue dots of appropriate size and spacing, distributing the glue dots in a grid or dot pattern on the base fabric layer, and bonding it to the other side of the nanofiber membrane layer 4 to form an initial fabric.

[0123] The glue dots are 1-2.5mm in diameter and 0.1-0.3mm in height, which improves the flexibility and breathability of the fabric, which is especially important for pants, in order to allow more freedom of movement while maintaining adhesion. In addition to reducing possible friction or irritation when wearing, the glue dots are spaced 6-12mm apart to further improve breathability and flexibility. The larger spacing helps maintain the natural stretch of the fabric and adapts to the bending and stretching of the legs during daily wear and activities.

[0124] Through the above steps, the moisture-wicking base fabric layer is bonded to the other side of the nanofiber membrane layer 4, and the hot melt adhesive 3 is applied again using the spot or grid coating technology. The key to optimizing this step is to ensure that the layers of material can be evenly and firmly bonded together while maintaining the breathability and moisture-wicking function of the material.

[0125] In step S6, a heat press is used to heat and press for 1-3 seconds at a suitable temperature of 120-160° C. and a pressure of 200-500 kPa to accurately press the layers of material to which the hot melt adhesive 3 has been applied, so as to ensure uniform adhesion between the layers of material and overall performance;

[0126] Among them, in the process of bonding hot melt adhesive 3 materials using a heat press, choosing the appropriate temperature, pressure and time is crucial to ensure high-quality bonding results.

[0127] The temperature is usually within the range of 120-160° C., which is sufficient for most hot melt adhesives 3 to reach their activation point and become highly adhesive, but not sufficient to damage fabrics or other materials to be bonded.

[0128] In this embodiment, 135° C. is selected to ensure that the hot melt adhesive 3 is fully melted and penetrates into the fabric fibers to form a strong bond, and to avoid material damage that may be caused by high temperature, such as thermal degradation, discoloration, melting or strength reduction.

[0129] The pressure is 200-500 kPa, which can ensure that the hot melt adhesive 3 is evenly distributed on the surface and inside of the material without causing excessive adhesive seepage or damaging the material.

[0130] In this embodiment, the pressure of 320 kPa is used to evenly disperse the hot melt adhesive 3 to increase the contact area and improve the bonding strength. At the same time, moderate pressure helps to maintain the original structure and softness of the material while ensuring the durability of the bonding.

[0131] The time is 1-3 seconds. Through short-term heat pressing, bonding can be achieved quickly and damage to the material that may be caused by long-term heat treatment can be avoided.

[0132] In this embodiment, the time is selected to be 2 seconds, which is highly efficient, can speed up the processing speed of the production line, and is suitable for industrial production. It reduces energy waste and potential material loss caused by long-term heating, limits the high temperature action time, and reduces the risk of thermal degradation.

[0133] By selecting special synthetic fibers such as polyester or modified polyester with good moisture absorption and perspiration wicking properties, and applying four-channel fiber spinning technology, the base fabric layer increases the surface area of ​​the fiber while optimizing its ability to absorb and diffuse water molecules. This structure is not only conducive to the rapid absorption and discharge of moisture, but also means that after the base fabric layer absorbs moisture emitted by the body, it can release heat through evaporation, thereby achieving a certain temperature regulation effect.

[0134] By adopting a specific knitted or woven structure to enhance breathability and rapid evaporation of water vapor, especially by using three-dimensional structural fabrics, an effective microclimate environment can be formed between the skin and the fabric. This environment is conducive to accelerating the discharge and evaporation of sweat. At the same time, through proper thermal energy management, such as reflecting or absorbing external light energy, the wearer's body temperature comfort can be further adjusted.

[0135] Moisture wicking finishing agents such as silane crosslinking agents are used to increase the hydrophilicity of the fiber surface to promote the rapid absorption and discharge of moisture. When these treated fabrics are exposed to light conditions, the absorbed moisture can provide a certain cooling effect through the evaporation and heat absorption process, and it is possible to use the optical properties of the material (such as reflectivity and absorptivity) to manage external light and heat to a certain extent.

[0136] By selecting glue dots of appropriate size and spacing and using hot melt adhesive 3 to form a precise bond between the base fabric layer and the nanofiber membrane layer 4, a strong connection between the two is ensured while maintaining the breathability and flexibility of the material.

[0137] Through the above-mentioned technologies and treatments, the base fabric layer can not only provide good moisture absorption and perspiration management and breathability, but also realize light heat storage and heat management for the wearer, thereby improving the wearing comfort and the ability to adapt to different environmental conditions.

[0138] It should be noted that the device structure and the drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above invention, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field.

[0139] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0140] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cloth with a breathable film, characterized in that the steps include: S1, choose nylon-spandex or polyester-spandex four-way stretch fabric to make the surface fabric layer, use polyurethane-based nanofiber material to prepare the breathable membrane layer, use special fiber fabric with moisture absorption and perspiration and light heat storage function to prepare the base fabric layer, choose environmentally friendly water-repellent additives for the waterproof layer of the surface fabric, and use hot melt adhesive for bonding between different layers; S2, using a roller coating or spraying process, the waterproofing agent is evenly coated on the outer side of the surface fabric layer, and then heat-curing treatment is performed to form a waterproof layer on both the front and back sides of the surface fabric; S3, preparing a solution containing polyurethane, spinning the solution into nanofibers using electrospinning technology at a specific voltage (12-20 kV) and a jet speed (0.1-1.0 mL / h), and collecting the formed membrane to form a nanofiber membrane layer; Among them, it is necessary to control environmental conditions (temperature, humidity) to ensure that the quality and performance of the fiber membrane meet the requirements. S4, applying hot melt adhesive to the waterproof layer on any side of the surface fabric layer by using a spot-dotted or grid-coated technique to bond the prepared nanofiber membrane layer to the waterproof layer; S5, using the same on-demand or grid coating technology on one side of the moisture wicking bottom fabric layer, and again using hot melt adhesive, to bond the bottom fabric layer to the other side of the nanofiber membrane layer to form an initial fabric; S6, using a heat press machine, at an appropriate temperature of 120-160°C and a pressure of 200-500 kPa, heat press for 1-3 seconds to accurately press the layers of material to which the hot melt adhesive has been applied, to ensure uniform bonding between the layers of material and overall performance; S7, trimming and washing the composite fabric to remove residual chemicals on the surface and adjust the fabric feel, thereby completing the fabric preparation.

2. The fabric with a breathable film according to claim 1, characterized in that: In step S2, a waterproofing agent is evenly applied to the outer side of the surface fabric layer by a rolling or spraying process, and then a thermal curing treatment is performed to form a waterproof layer on both the front and back sides of the surface fabric, as follows; S21, ensure that the surface fabric is clean and free of dust and oil stains; S22, select appropriate rollers and jets to coat the opposite fabric layer; S23, during the heat curing process of the coated surface cloth layer, the temperature is set at 150-170°C and the curing time is between 1-2 minutes.

3. The fabric with a breathable film according to claim 2, characterized in that: In step S22, the coating amount is controlled at 20 g / m2; In step S23, the face cloth passes through a preset temperature of 160° C. for 90 seconds.

4. The fabric with a breathable film according to claim 1, characterized in that: In step S3, a solution containing polyurethane is prepared, and the solution is spun into nanofibers by electrospinning technology at a specific voltage (12-20 kV) and a jet speed (0.1-1.0 mL / h), and the resulting film is collected to form a nanofiber film layer. The specific steps are as follows; S31, nanofiber preparation; S311, using polyvinyl alcohol as the polymer basis, the concentration was set to 8wt% dissolved in distilled water, and the electrospinning parameters were set to voltage 12-20 kV, injection speed 0.1-1.0 mL / h, collection distance 10-20 cm, and ambient temperature 20-25°C; S312, preparing a nanofiber layer by adjusting voltage and jet speed; S32, Preparation of composite materials: S321, nonwoven fabric is selected as a reinforcing substrate with a thickness of about 0.1-0.5 mm as a support layer; S322, using environmentally friendly glue to connect the support layer and the nanofiber layer, the thickness is controlled at 0.01-0.05 mm, and it is laid on the support layer in a grid or dot pattern, and then bonded to the nanofiber layer; S323, using a hot pressing device, the temperature is set between 120-150°C, the pressure is about 1-5MPa, and the time is 1-5 minutes, so that the support layer and the nanofiber layer are stably connected to form a nanofiber membrane layer.

5. The fabric with a breathable film according to claim 1, characterized in that: In step S4, a hot melt adhesive is applied to the waterproof layer on any side of the surface fabric layer by using a spot-dotted or grid-coated technique to bond the prepared nanofiber membrane layer thereto. The specific steps are as follows; S41, selecting a hot melt adhesive suitable for the surface fabric material and the nanofiber membrane layer; S42, applying the hot melt adhesive to the surface fabric layer by using a dot-by-dot technique, wherein the dots applied may be dots, stars or other shapes.

6. The fabric with a breathable film according to claim 1, characterized in that: In step S5, the same on-demand or grid coating technology is used on one side of the moisture wicking base fabric layer, and hot melt adhesive is used again to bond the base fabric layer to the other side of the nanofiber membrane layer to form an initial fabric. The specific steps are as follows: S51, performing a moisture absorption and perspiration treatment on the base fabric to form a bottom layer; S52, selecting glue dots of appropriate size and spacing, distributing the glue dots in a grid or dot pattern on the base fabric layer, and bonding the glue dots to the other side of the nanofiber membrane layer to form an initial fabric.

7. The fabric with a breathable film according to claim 6, characterized in that: In step S51, the base fabric is subjected to moisture absorption and perspiration treatment to form a bottom layer, and the specific steps are as follows; S511, select a special synthetic fiber with good moisture absorption and perspiration wicking performance, use four-channel fiber spinning technology to form a fiber with a porous structure to increase the surface area of ​​the fiber, thereby improving its ability to absorb and diffuse water molecules, and enhancing the fiber's moisture conduction and perspiration wicking performance. In this embodiment, the base fabric material is polyester, and modified polyester can be particularly selected; S512, the key to improving wearing comfort in applications such as sportswear is to form fabrics by using specific knitted or woven structures to enhance their breathability and ability to quickly evaporate water vapor. Three-dimensional structured fabrics are particularly good in this regard because they can form an effective microclimate between the skin and the fabric, accelerating the discharge and evaporation of sweat, thereby keeping the body dry and comfortable; S513 uses moisture wicking finishing agents through impregnation, baking, antibacterial and other processes to form a complete base fabric layer.

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