Three-layer cloth dissolving and drawing manufacturing process

Abstract

The invention is applicable to the technical field of textile and fabric, and provides a three-layer cloth dissolving and drawing manufacturing process which comprises the following steps: selecting three layers of cloth including a surface layer, a middle layer and a bottom layer, and compounding the three layers of cloth; designing the shape, size and position of the pattern; engraving a pattern outline on the middle layer of the three-layer cloth by adopting laser engraving equipment; according to the three-layer cloth dissolving and displaying manufacturing process, the pattern is engraved through laser, the precision is high, pattern lines are smooth, and the edge is clear; the speed is high and batch production is facilitated; the fabric is dissolved by adopting an environment-friendly solvent, so that the fabric is environment-friendly, non-toxic and easy to volatilize; the dissolving process is mild, and the fabric fiber structure is not damaged; the air permeability and the hand feeling of the cloth are not affected by a hot-pressing or ultrasonic compounding technology.

Description

Technical Field

[0001] The invention belongs to the technical field of textiles and fabrics, and in particular relates to a three-layer cloth dissolution display production process. Background Art

[0002] In the field of textile and fabric decoration, the presentation of patterns has always been the key to increasing product added value. Although the traditional pattern making techniques, such as printing and embroidery, are mature in technology, they are slightly insufficient in the expression of fabric layering and pattern three-dimensionality. In recent years, as consumers' pursuit of fabric quality and design has increased, the three-layer fabric composite pattern making process has emerged. This process combines three layers of fabrics of different materials or colors to form a rich layering and unique visual effect.

[0003] However, there are some problems with the existing three-layer fabric composite pattern production process. First, the presentation of the pattern often relies on processes such as printing or embroidery. When these processes are used on three-layer fabrics, problems such as blurred patterns and uneven colors are prone to occur. Secondly, the adhesive used in the composite process may have an adverse effect on the breathability and feel of the fabric. Finally, after washing or long-term use, the composite fabric is prone to pattern shedding or deformation, affecting the durability and aesthetics of the product.

[0004] Therefore, how to develop a dissolution display production process that can maintain the three-dimensional sense of the three-layer fabric composite pattern, ensure the pattern is clear and colorful, and does not affect the original performance of the fabric has become a technical problem that needs to be urgently solved in the current fabric pattern production field. Summary of the invention

[0005] The present invention provides a three-layer fabric dissolution display manufacturing process, aiming to solve the above-mentioned problems.

[0006] The present invention is implemented as follows: a three-layer fabric dissolution display production process comprises the following steps: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern. Specifically, the pattern can be drawn by computer-aided design software, the shape, size and position of the pattern can be determined, and the pattern file can be imported into the control system of the laser engraving equipment; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

[0007] By laser engraving, tiny holes or grooves are formed on the fabric, which increases the contact area between the solvent and the target layer, accelerates the dissolution process, and improves the dissolution efficiency. The structure of the engraved area is destroyed, and the solvent can more easily penetrate into the target layer, achieving rapid and uniform dissolution. The solvent penetrates into the engraved area through capillary action and diffuses between the fabric fibers, gradually dissolving the target layer. The low viscosity and high volatility of the solvent enable it to penetrate quickly and be evenly distributed, ensuring consistent dissolution effects in the patterned area. When the target layer is dissolved, the structure between the surface and bottom layers changes, forming a visual contrast effect that makes the pattern appear naturally. For example, if the middle layer is completely dissolved, the light transmittance of the surface layer will increase, and the color or texture of the bottom layer will appear through the surface layer to form a pattern.

[0008] Preferably, the top layer and the bottom layer of the three-layer fabric are made of cotton, silk or nylon, and the middle layer is made of polyester fiber or acetate fiber.

[0009] Preferably, the three layers of fabric are laminated by heat pressing or ultrasonic lamination technology.

[0010] Hot pressing compounding: Put the three layers of fabric into the hot pressing equipment and compound them by heating and pressurizing. The hot pressing parameters (temperature, pressure, time) are adjusted according to the fabric material to ensure that the layers are tightly combined.

[0011] Ultrasonic lamination: Use ultrasonic equipment to laminate three layers of fabric, and use the heat generated by high-frequency vibration to fuse the fibers. It is suitable for fabrics made of certain special materials.

[0012] Preferably, the pattern outline engraved on the middle layer of the three-layer fabric by using a laser engraving device is specifically: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

[0013] Laser engraving has high precision, smooth lines and clear edges; it is fast and suitable for mass production; it is non-contact processing and avoids fabric damage.

[0014] Modern laser engraving equipment has high-precision control capabilities and can achieve micron-level engraving depth control. By adjusting parameters such as laser power, speed, and focal length, the penetration depth of the laser into the material can be precisely controlled. For multi-layer materials (such as three-layer cloth), laser engraving equipment can achieve engraving only on the middle layer in the following ways: Parameter optimization: Determine the laser parameters suitable for the cloth material through experiments to ensure that the laser energy only acts on the middle layer. Focus control: Accurately focus the laser on the middle layer to prevent energy from diffusing to the surface or bottom layer. Layered scanning: Use layered scanning technology to gradually engrave the middle layer while monitoring the engraving depth.

[0015] Selective absorption of laser energy - Different materials have different absorption rates for laser energy. By choosing the right laser wavelength, the laser energy can be absorbed primarily by the middle layer, while the surface and bottom layers absorb less. For example, if the middle layer is polyester and the surface layer is cotton, a laser wavelength that has a high absorption rate for polyester (such as 10.6μm CO 2 laser).

[0016] Precise control of laser focus - The laser focus is precisely aligned to the middle layer, ensuring that the energy is concentrated in the target area. The surface and bottom layers are outside the focus and receive lower laser energy, which is not enough to cause damage.

[0017] Optimization of laser parameters - Low power: Use lower laser power to ensure that the energy is only enough to engrave the middle layer without penetrating the surface layer. High speed: Fast scanning reduces the time the laser stays on the surface to avoid heat accumulation. Short pulse: Use pulsed laser to reduce the heat-affected zone and avoid thermal damage to the surface.

[0018] Protective measures - During the engraving process, a protective film can be covered on the surface or a cooling device can be used to further reduce the potential impact of the laser on the surface.

[0019] Preferably, the engraving parameters of the laser engraving device include a power of 10-50W, a speed of 100-500mm / s, and a focal length adjusted according to the thickness of the fabric to ensure a moderate engraving depth.

[0020] Preferably, the environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent, which is environmentally friendly, non-toxic, and volatile; has no adverse effects on the air permeability and feel of the fabric; the dissolution process is gentle and does not damage the fiber structure of the fabric. The environmentally friendly organic solvent can be ethyl acetate, acetone, ethyl lactate, etc., and the environmentally friendly water-based solvent can be an alkaline aqueous solution (such as 1-5% sodium carbonate aqueous solution, 0.5-2% sodium hydroxide aqueous solution) and a surfactant aqueous solution (such as 0.1-1% alkyl glycoside aqueous solution, 0.1-1% Tween aqueous solution), etc.

[0021] Preferably, the step of dissolving the engraved area with an environmentally friendly solvent to make the pattern naturally revealed is as follows: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern naturally revealed; the dissolution time is 3-10 minutes, which can be adjusted according to the solvent and fabric material; After the dissolution treatment, wash the fabric with clean water or a neutral detergent to remove any residual solvent; Line dry or tumble dry on low heat after washing to ensure the fabric regains its original feel and breathability.

[0022] The solvent's ability to dissolve a specific material is based on the principle of "like dissolves like", that is, when the chemical properties of the solvent are similar to those of the target material, the dissolution effect is best. In this process, the solvent is designed to have selective dissolution ability for one layer (usually the middle layer) of the three-layer fabric, while having no significant effect on the other layers (the surface layer and the bottom layer). For example, if the middle layer is polyester fiber, the solvent can be an organic solvent that can dissolve polyester but not cotton or nylon. Environmentally friendly solvents are usually low in toxicity, volatile and biodegradable, ensuring that the process is harmless to the environment. The solvent can evaporate quickly after use and will not leave harmful substances on the fabric. At the same time, it does not affect the breathability and feel of the fabric. The solvent is designed to dissolve only the target layer without destroying the fiber structure of the surface and bottom layers. By controlling the chemical composition and action time of the solvent, the dissolution process is ensured to be gentle and avoid adverse effects on the overall performance of the fabric.

[0023] Preferably, before the three layers of fabric are laminated, the middle layer is pretreated, and the pretreatment method is specifically as follows: Use low-temperature plasma equipment to treat the middle layer for 1-3 minutes with a power of 100-500W. The middle layer can be placed in the processing chamber of the plasma equipment. Start the equipment and the plasma will treat the surface of the middle layer. After the treatment is completed, take out the cloth. Through plasma treatment, a micro-nano rough structure can be formed on the surface of the middle layer to improve the adhesion and accuracy of laser engraving. Polar groups (such as hydroxyl and carboxyl) can also be introduced to enhance the chemical activity of the cloth surface and improve the laser engraving effect. Immerse the plasma-treated intermediate layer in the composite finishing solution for 5-15 minutes; Dry the finished middle layer at 50-60°C; The composite finishing liquid comprises the following raw materials in parts by weight: 10-15 parts of polydimethylsiloxane, 6-12 parts of modified chitosan, 5-10 parts of modified betaine, and 30-40 parts of deionized water.

[0024] The composite finishing liquid is used to reduce the accumulation of static electricity on the surface of the middle layer, prevent static electricity interference during laser engraving, improve engraving accuracy, make the surface of the middle layer smoother, reduce laser scattering, and improve engraving clarity.

[0025] Preferably, the preparation method of the modified chitosan is as follows: chitosan with an average molecular weight of 620,000 and a deacetylation degree of 90-95% is added to 6-10 times the weight of a sodium hydroxide solution with a concentration of 2-5%, leached at -15 to -10°C for 20-30h, filtered and dried to obtain an intermediate, the intermediate is added to 8-12 times the weight of a 1% acetic acid solution, treated with a microwave device at 200-400W for 10-20min, precipitated with ethanol, washed and dried to obtain the modified chitosan. First, the chitosan is swollen by sodium hydroxide, and the thermal effect and non-thermal effect of microwaves are further used to destroy the glycosidic bonds of the chitosan, reduce the molecular weight, enhance the water solubility of the chitosan, and make it fully distributed in the middle layer.

[0026] Preferably, the preparation method of the modified betaine is as follows: take 15-20 parts by weight of betaine, 5-10 parts by weight of sodium lignin sulfonate and 40-50 parts by weight of deionized water, mix them evenly, add 1-5 parts by weight of polyethylene glycol and stir evenly, react at 50-60° C. for 50-80 minutes, then precipitate the product with ethanol, wash and dry to obtain the modified betaine. Betaine is first modified by sodium lignin sulfonate to reduce the surface tension and improve the surface activity of betaine, and then the antistatic performance of betaine is improved by polyethylene glycol, thereby giving the middle layer better antistatic performance.

[0027] Compared with the prior art, the embodiments of the present application have the following beneficial effects: The three-layer fabric dissolution and display production process provided by the present invention uses laser engraving to carve patterns with high precision, smooth pattern lines and clear edges; it is fast and suitable for mass production; it is non-contact processing to avoid fabric damage, and uses environmentally friendly solvents for dissolution, which are environmentally friendly, non-toxic and volatile; the dissolution process is gentle and does not damage the fabric fiber structure; and it uses hot pressing or ultrasonic composite technology to have no adverse effects on the air permeability and feel of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention provides a flowchart of a three-layer fabric dissolution display manufacturing process.

[0029] Figure 2 It is another flow chart of a three-layer fabric dissolution display manufacturing process provided by the present invention. DETAILED DESCRIPTION

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] Example 1 The embodiment of the present invention provides a three-layer fabric dissolution display manufacturing process, such as Figure 1 As shown, the following steps are included: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern. Specifically, the pattern can be drawn by computer-aided design software, the shape, size and position of the pattern can be determined, and the pattern file can be imported into the control system of the laser engraving equipment; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

[0033] In this embodiment, the surface layer of the three-layer fabric is cotton, the middle layer is polyester fiber, and the bottom layer is nylon.

[0034] In a specific implementation, the three layers of fabric are laminated by heat pressing or ultrasonic lamination technology.

[0035] In this embodiment, hot pressing is used: three layers of fabric are placed in a hot pressing device and compounded by heating and pressurizing. The hot pressing parameters (temperature, pressure, time) are adjusted according to the fabric material to ensure that each layer is tightly combined.

[0036] In this embodiment, the pattern outline engraved on the middle layer of the three-layer fabric using the laser engraving device is specifically as follows: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

[0037] Preferably, the engraving parameters of the laser engraving equipment include a power of 10W, a speed of 100mm / s, and a focal length adjusted according to the thickness of the fabric to ensure a moderate engraving depth.

[0038] In this embodiment, the environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent, which is environmentally friendly, non-toxic, and volatile; it has no adverse effects on the air permeability and feel of the fabric; the dissolution process is gentle and does not damage the fiber structure of the fabric. In this embodiment, the environmentally friendly organic solvent can be ethyl acetate, and the environmentally friendly water-based solvent can be 0.5% sodium hydroxide aqueous solution, which has the characteristics of environmental protection, non-toxicity, and volatility, and can selectively dissolve the middle layer material while ensuring the fabric performance and pattern quality.

[0039] Furthermore, the engraved area is dissolved by an environmentally friendly solvent to make the pattern naturally revealed, specifically: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern appear naturally; the dissolution time is 3 minutes, which can be adjusted according to the solvent and fabric material; After the dissolution treatment, the fabric can be washed with clean water or a neutral detergent to remove residual solvent; Line dry or tumble dry on low heat after washing to ensure the fabric regains its original feel and breathability.

[0040] Example 2 The embodiment of the present invention provides a three-layer fabric dissolution display manufacturing process, such as Figure 1 As shown, the following steps are included: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern. Specifically, the pattern can be drawn by computer-aided design software, the shape, size and position of the pattern can be determined, and the pattern file can be imported into the control system of the laser engraving equipment; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

[0041] In this embodiment, the surface layer of the three-layer fabric is silk, the middle layer is polyester fiber, and the bottom layer is nylon.

[0042] In a specific implementation, the three layers of fabric are laminated by heat pressing or ultrasonic lamination technology.

[0043] In this embodiment, ultrasonic compounding is adopted: three layers of cloth are compounded using ultrasonic equipment, and the heat generated by high-frequency vibration is used to fuse the fibers, which is suitable for cloth of certain special materials.

[0044] In this embodiment, the pattern outline engraved on the middle layer of the three-layer fabric using the laser engraving device is specifically as follows: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

[0045] Preferably, the engraving parameters of the laser engraving equipment include a power of 20W, a speed of 200mm / s, and a focal length adjusted according to the thickness of the fabric to ensure a moderate engraving depth.

[0046] In this embodiment, the environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent, which is environmentally friendly, non-toxic, and volatile; it has no adverse effects on the air permeability and feel of the fabric; the dissolution process is gentle and does not damage the fiber structure of the fabric. The environmentally friendly organic solvent can be acetone, and the environmentally friendly water-based solvent can be a 0.8% sodium hydroxide aqueous solution, which has the characteristics of environmental protection, non-toxicity, and volatility, and can selectively dissolve the middle layer material while ensuring the fabric performance and pattern quality.

[0047] Furthermore, the engraved area is dissolved by an environmentally friendly solvent to make the pattern naturally revealed, specifically: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern appear naturally; the dissolution time is 4 minutes, which can be adjusted according to the solvent and fabric material; After the dissolution treatment, the fabric can be washed with clean water or a neutral detergent to remove residual solvent; Line dry or tumble dry on low heat after washing to ensure the fabric regains its original feel and breathability.

[0048] Example 3 The embodiment of the present invention provides a three-layer fabric dissolution display manufacturing process, such as Figure 1 As shown, the following steps are included: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern. Specifically, the pattern can be drawn by computer-aided design software, the shape, size and position of the pattern can be determined, and the pattern file can be imported into the control system of the laser engraving equipment; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

[0049] In this embodiment, the surface layer of the three-layer fabric is cotton, the middle layer is acetate fiber, and the bottom layer is silk.

[0050] In a specific implementation, the three layers of fabric are laminated by heat pressing or ultrasonic lamination technology.

[0051] In this embodiment, hot pressing is used: three layers of fabric are placed in a hot pressing device and compounded by heating and pressurizing. The hot pressing parameters (temperature, pressure, time) are adjusted according to the fabric material to ensure that each layer is tightly combined.

[0052] In this embodiment, the pattern outline engraved on the middle layer of the three-layer fabric using the laser engraving device is specifically as follows: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

[0053] Preferably, the engraving parameters of the laser engraving equipment include a power of 30W, a speed of 300mm / s, and a focal length adjusted according to the thickness of the fabric to ensure a moderate engraving depth.

[0054] In this embodiment, the environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent, which is environmentally friendly, non-toxic, and volatile; it has no adverse effects on the air permeability and feel of the fabric; the dissolution process is gentle and does not damage the fiber structure of the fabric. The environmentally friendly organic solvent can be acetone, and the environmentally friendly water-based solvent can be a 1% sodium carbonate aqueous solution, which has the characteristics of environmental protection, non-toxicity, and volatility, and can selectively dissolve the middle layer material while ensuring the fabric performance and pattern quality.

[0055] Furthermore, the engraved area is dissolved by an environmentally friendly solvent to make the pattern naturally revealed, specifically: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern appear naturally; the dissolution time is 3 minutes, which can be adjusted according to the solvent and fabric material; After the dissolution treatment, the fabric can be washed with clean water or a neutral detergent to remove residual solvent; Line dry or tumble dry on low heat after washing to ensure the fabric regains its original feel and breathability.

[0056] Example 4 The embodiment of the present invention provides a three-layer fabric dissolution display manufacturing process, such as Figure 1 As shown, the following steps are included: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern. Specifically, the pattern can be drawn by computer-aided design software, the shape, size and position of the pattern can be determined, and the pattern file can be imported into the control system of the laser engraving equipment; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

[0057] In this embodiment, the surface layer of the three-layer fabric is cotton, the middle layer is acetate fiber, and the bottom layer is nylon.

[0058] In a specific implementation, the three layers of fabric are laminated by heat pressing or ultrasonic lamination technology.

[0059] In this embodiment, ultrasonic compounding is adopted: three layers of cloth are compounded using ultrasonic equipment, and the heat generated by high-frequency vibration is used to fuse the fibers, which is suitable for cloth of certain special materials.

[0060] In this embodiment, the pattern outline engraved on the middle layer of the three-layer fabric using the laser engraving device is specifically as follows: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

[0061] Preferably, the engraving parameters of the laser engraving equipment include a power of 40W, a speed of 400mm / s, and a focal length adjusted according to the thickness of the fabric to ensure a moderate engraving depth.

[0062] In this embodiment, the environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent, which is environmentally friendly, non-toxic, and volatile; it has no adverse effects on the air permeability and feel of the fabric; the dissolution process is gentle and does not damage the fiber structure of the fabric. The environmentally friendly organic solvent can be ethyl lactate, and the environmentally friendly water-based solvent can be a 1% alkyl glycoside aqueous solution, which has the characteristics of environmental protection, non-toxicity, and volatility, and can selectively dissolve the middle layer material while ensuring the fabric performance and pattern quality.

[0063] Furthermore, the engraved area is dissolved by an environmentally friendly solvent to make the pattern naturally revealed, specifically: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern appear naturally; the dissolution time is 3 minutes, which can be adjusted according to the solvent and fabric material; After the dissolution treatment, the fabric can be washed with clean water or a neutral detergent to remove residual solvent; Line dry or tumble dry on low heat after washing to ensure the fabric regains its original feel and breathability.

[0064] Example 5 The embodiment of the present invention provides a three-layer fabric dissolution display manufacturing process, such as Figure 1 As shown, the following steps are included: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern. Specifically, the pattern can be drawn by computer-aided design software, the shape, size and position of the pattern can be determined, and the pattern file can be imported into the control system of the laser engraving equipment; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

[0065] In this embodiment, the surface layer of the three-layer fabric is cotton, the middle layer is polyester fiber, and the bottom layer is silk.

[0066] In a specific implementation, the three layers of fabric are laminated by heat pressing or ultrasonic lamination technology.

[0067] In this embodiment, hot pressing is used: three layers of fabric are placed in a hot pressing device and compounded by heating and pressurizing. The hot pressing parameters (temperature, pressure, time) are adjusted according to the fabric material to ensure that each layer is tightly combined.

[0068] In this embodiment, the pattern outline engraved on the middle layer of the three-layer fabric using the laser engraving device is specifically as follows: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

[0069] Preferably, the engraving parameters of the laser engraving equipment include a power of 50W, a speed of 500mm / s, and a focal length adjusted according to the thickness of the fabric to ensure a moderate engraving depth.

[0070] In this embodiment, the environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent, which is environmentally friendly, non-toxic, and volatile; it has no adverse effects on the air permeability and feel of the fabric; the dissolution process is gentle and does not damage the fiber structure of the fabric. The environmentally friendly organic solvent can be ethyl acetate, acetone, ethyl lactate, etc., and the environmentally friendly water-based solvent can be a 2% sodium hydroxide aqueous solution, which has the characteristics of environmental protection, non-toxicity, and volatility, and can selectively dissolve the middle layer material while ensuring the fabric performance and pattern quality.

[0071] Furthermore, the engraved area is dissolved by an environmentally friendly solvent to make the pattern naturally revealed, specifically: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern naturally revealed; the dissolution time is 3-10 minutes, which can be adjusted according to the solvent and fabric material; After the dissolution treatment, the fabric can be washed with clean water or a neutral detergent to remove residual solvent; Line dry or tumble dry on low heat after washing to ensure the fabric regains its original feel and breathability.

[0072] Example 6 The embodiment of the present invention provides a three-layer fabric dissolution display manufacturing process, such as Figure 2 As shown, the following steps are included: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, pre-treat the middle layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern. Specifically, the pattern can be drawn by computer-aided design software, the shape, size and position of the pattern can be determined, and the pattern file can be imported into the control system of the laser engraving equipment; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

[0073] In this embodiment, the surface layer of the three-layer fabric is cotton, the middle layer is acetate fiber, and the bottom layer is silk.

[0074] Furthermore, the method for preprocessing the middle layer is specifically as follows: The middle layer is treated with a low-temperature plasma device for 1-3 minutes, preferably 2 minutes in this embodiment, with a power of 100-500W, preferably 300W in this embodiment; The plasma treated intermediate layer is immersed in the composite finishing solution for 10-20 minutes, preferably 15 minutes in this embodiment; The finished middle layer is dried at 50-60°C, preferably 55°C in this embodiment; The composite finishing liquid includes the following raw materials in parts by weight: 10-15 parts of polydimethylsiloxane, 6-12 parts of modified chitosan, 5-10 parts of modified betaine, and 30-40 parts of deionized water. In this embodiment, it can be 12.5 parts of polydimethylsiloxane, 9 parts of modified chitosan, 7.5 parts of modified betaine, and 35 parts of deionized water.

[0075] The preparation method of the modified chitosan is as follows: chitosan with an average molecular weight of 620,000 and a deacetylation degree of 90-95% is taken, added to a sodium hydroxide solution with a concentration of 2-5% by 6-10 times the weight, leached at -15 to -10°C for 20-30 hours, filtered and dried to obtain an intermediate, the intermediate is added to a 1% acetic acid solution with a weight of 8-12 times, treated with a microwave device at 200-400W for 10-20 minutes, the product is precipitated with ethanol, washed and dried to obtain the modified chitosan.

[0076] The preparation method of the modified betaine is as follows: 15-20 parts by weight of betaine, 5-10 parts by weight of sodium lignin sulfonate and 40-50 parts by weight of deionized water are taken and mixed evenly, 1-5 parts by weight of polyethylene glycol is added and stirred evenly, reacting at 50-60° C. for 50-80 minutes, and then precipitating the product with ethanol, washing and drying to obtain the modified betaine.

[0077] In a specific implementation, the three layers of fabric are laminated by heat pressing or ultrasonic lamination technology.

[0078] In this embodiment, hot pressing is used: three layers of fabric are placed in a hot pressing device and compounded by heating and pressurizing. The hot pressing parameters (temperature, pressure, time) are adjusted according to the fabric material to ensure that each layer is tightly combined.

[0079] In this embodiment, the pattern outline engraved on the middle layer of the three-layer fabric using the laser engraving device is specifically as follows: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

[0080] Preferably, the engraving parameters of the laser engraving equipment include a power of 30W, a speed of 300mm / s, and a focal length adjusted according to the thickness of the fabric to ensure a moderate engraving depth.

[0081] In this embodiment, the environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent, which is environmentally friendly, non-toxic, and volatile; it has no adverse effects on the air permeability and feel of the fabric; the dissolution process is gentle and does not damage the fiber structure of the fabric. The environmentally friendly organic solvent can be acetone, and the environmentally friendly water-based solvent can be a 1% sodium carbonate aqueous solution, which has the characteristics of environmental protection, non-toxicity, and volatility, and can selectively dissolve the middle layer material while ensuring the fabric performance and pattern quality.

[0082] Furthermore, the engraved area is dissolved by an environmentally friendly solvent to make the pattern naturally revealed, specifically: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern appear naturally; the dissolution time is 3 minutes, which can be adjusted according to the solvent and fabric material; After the dissolution treatment, the fabric can be washed with clean water or a neutral detergent to remove residual solvent; Line dry or tumble dry on low heat after washing to ensure the fabric regains its original feel and breathability.

[0083] Comparative Example 1: The three-layer material is the same as that of Example 1, and is a three-layer fabric obtained by using the existing three-layer fabric composite pattern manufacturing process.

[0084] Comparative Example 2: The three-layer material is the same as that of Example 2, and is a three-layer fabric obtained by using the existing three-layer fabric composite pattern manufacturing process.

[0085] Comparative Example 3: The three-layer material is the same as that of Example 3, but is a three-layer fabric obtained by using the existing three-layer fabric composite pattern manufacturing process.

[0086] Comparative Example 4: The three-layer material is the same as that of Example 4, and is a three-layer fabric obtained by using the existing three-layer fabric composite pattern manufacturing process.

[0087] Comparative Example 5: The three-layer material is the same as that of Example 5, but is a three-layer fabric obtained by using the existing three-layer fabric composite pattern manufacturing process.

[0088] experiment The three-layer fabrics obtained in Examples 1-6 and Comparative Examples 1-5 were tested for performance.

[0089] Air permeability test: Use an air permeability tester (such as Textest FX3300) to test in accordance with standard GB / T 5453-1997 "Determination of air permeability of textiles".

[0090] Measures the volume of gas passing through a unit area of ​​fabric per unit time (mm³ / s / cm²); Washing test: According to the standard GB / T 8629-2017 "Household washing and drying procedures for textiles", the fabric was washed multiple times (20 times) using a washing machine.

[0091] Check after washing to see if the pattern has come off, faded, or become deformed.

[0092] Pattern clarity test: Photograph the pattern using a high-resolution scanner or camera and measure the sharpness and contrast of the pattern edges using image analysis software such as ImageJ.

[0093] Calculate the pattern's resolution (DPI) and edge sharpness (in pixels); Testing standards: Pass: The pattern is clear, the edges are sharp, and there is no color difference.

[0094] Unqualified: The pattern is fuzzy, the edge is not clear, or the color difference ΔE>2.0.

[0095] The test results are shown in Table 1 below: Table 1 Three-layer fabric performance test results Group Air permeability (mm³ / s / cm²) Is the pattern peeling off, fading or deforming? Pattern clarity Example 1 337 no qualified Comparative Example 2 198 yes Failure Example 2 485 no qualified Comparative Example 2 293 yes Failure Example 3 506 no qualified Comparative Example 3 301 yes Failure Example 4 386 no qualified Comparative Example 4 228 yes Failure Example 5 488 no qualified Comparative Example 5 292 yes Failure Example 6 538 no qualified From the above results, it can be seen that the three-layer fabric obtained by the three-layer fabric dissolution display manufacturing process provided by the present invention has good air permeability and good washing resistance, and the laser engraved pattern has smooth lines and clear edges.

[0096] It should be noted that, for the above embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0097] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A three-layer fabric dissolution display production process, characterized in that: The steps include: Select three layers of fabric, including a surface layer, a middle layer and a bottom layer, and laminate the three layers of fabric; Design the shape, size and position of the pattern; A laser engraving device is used to engrave the outline of the pattern on the middle layer of the three-layer fabric; The engraved area is dissolved with an environmentally friendly solvent, allowing the pattern to appear naturally.

2. The three-layer fabric dissolution display manufacturing process according to claim 1, characterized in that: The surface layer and the bottom layer of the three-layer cloth are made of cotton, silk or nylon, and the middle layer is made of polyester fiber or acetate fiber.

3. The three-layer fabric dissolution display manufacturing process according to claim 1, characterized in that: The three-layer fabric is laminated by heat pressing or ultrasonic lamination technology.

4. The three-layer fabric dissolution display manufacturing process according to claim 1, characterized in that: The pattern outline engraved on the middle layer of the three-layer fabric using the laser engraving equipment is specifically as follows: Fix the composite three-layer fabric on the workbench of the laser engraving equipment; Start the equipment and accurately carve the outline of the pattern on the middle layer according to the preset parameters; After engraving is complete, check the clarity of the pattern and the sharpness of the edges.

5. The three-layer fabric dissolution display manufacturing process as claimed in claim 4, characterized in that: The engraving parameters of the laser engraving equipment include a power of 10-50W and a speed of 100-500mm / s.

6. The three-layer fabric dissolution display manufacturing process according to claim 1, characterized in that: The environmentally friendly solvent is an environmentally friendly organic solvent or a water-based solvent. The environmentally friendly organic solvent includes one of ethyl acetate, acetone, and ethyl lactate. The environmentally friendly water-based solvent includes an alkaline aqueous solution or a surfactant aqueous solution.

7. The three-layer fabric dissolution display manufacturing process according to claim 6, characterized in that: The method of dissolving the engraved area with an environmentally friendly solvent to make the pattern naturally revealed is specifically as follows: Spray or apply the solvent evenly over the engraved area; Wait for the solvent to react with the middle layer, dissolve the engraved part, and make the pattern naturally revealed. The dissolution time is 3-10 minutes; After dissolving, wash the fabric with clean water or a neutral detergent; Line dry or tumble dry low after washing.

8. The three-layer fabric dissolution display manufacturing process as claimed in claim 7, characterized in that: Before compounding the three layers of fabric, the middle layer is pretreated, and the pretreatment method is specifically as follows: Use low-temperature plasma equipment to treat the middle layer for 1-3 minutes, with a power of 100-500W; Immerse the plasma-treated intermediate layer in the composite finishing solution for 10-20 minutes; Dry the finished middle layer at 50-60°C; The composite finishing liquid comprises the following raw materials in parts by weight: 10-15 parts of polydimethylsiloxane, 6-12 parts of modified chitosan, 5-10 parts of modified betaine, and 30-40 parts of deionized water.

9. The three-layer fabric dissolution display manufacturing process as claimed in claim 8, characterized in that: The preparation method of the modified chitosan is as follows: chitosan with an average molecular weight of 620,000 and a deacetylation degree of 90-95% is added to 6-10 times the weight of a sodium hydroxide solution with a concentration of 2-5%, leached at -15 to -10°C for 20-30h, filtered and dried to obtain an intermediate, the intermediate is added to 8-12 times the weight of a 1% acetic acid solution, treated with a microwave device at 200-400W for 10-20min, the product is precipitated with ethanol, washed and dried to obtain the modified chitosan.

10. The three-layer fabric dissolution display manufacturing process according to claim 8, characterized in that: The preparation method of the modified betaine is as follows: 15-20 parts by weight of betaine, 5-10 parts by weight of sodium lignin sulfonate and 40-50 parts by weight of deionized water are taken and mixed evenly, 1-5 parts by weight of polyethylene glycol is added and stirred evenly, reacting at 50-60° C. for 50-80 minutes, and then precipitating the product with ethanol, washing and drying to obtain the modified betaine.

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