A multi-layer three-dimensional fabric and its production method and application

Abstract

The present invention belongs to the technical field of fabric manufacturing, and more specifically relates to a multi-layer three-dimensional fabric and its production method and application. The three-dimensional slurry layer is separated into the interlayer and the extrusion layer by the mesh layer, forming a four-layer three-dimensional fabric including at least a base fabric layer, an interlayer, a mesh layer and an extrusion layer connected in sequence. When the three-dimensional slurry layer is not dry, it protrudes from the mesh holes of the mesh layer under pressure, forming a rounded hemispherical shape convex away from the base fabric layer. Since the thickness of the extrusion layer is gradually changed, the three-dimensional slurry layer visually presents a smudge effect like an ink painting under the action of the mesh, and cooperates with the printing layer on the base fabric layer to form a more diverse and varied three-dimensional effect fabric. After testing, the multi-layer three-dimensional fabric has excellent moisture resistance, alkali resistance, mesh peeling resistance, three-dimensional slurry layer peeling resistance, bending resistance, sweat resistance, aging resistance, and can be applied to multiple fields such as shoe uppers, clothing exteriors, automotive interiors, home textile products, and bags.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric manufacturing, and more specifically relates to a multi-layer three-dimensional fabric and a production method and application thereof. Background Art

[0002] With the advancement of social science and technology and the improvement of people's material living standards, fabrics have also been developing rapidly. In order to achieve special functions and highlight personality, various 3D / stereoscopic fabrics have emerged on the market. Traditional yarn fabrics have been transformed into new styles through innovative designs. This kind of fabric design uses patterns and special finishing techniques, such as special resin coating new technology, holographic effects, and three-dimensional patterns to make fabrics and patterns look more three-dimensional.

[0003] More information related to the above technical solution can also be found in the following documents:

[0004] For example, in the Chinese invention patent application with patent publication number CN105780540A, a textile foaming anti-skid printing is disclosed, including a foaming anti-skid layer with an uneven surface, the foaming anti-skid layer is covered on the surface of the textile by printing, and the material of the foaming anti-skid layer includes acrylic resin. The performance of the acrylic resin used in this technology is difficult to achieve the expected performance of the polyurethane printing coating, such as high peel strength and resistance to bending. This technology uses a screen printing process, the coating thickness is thin, the three-dimensional effect is poor, and the coating is mainly attached to the surface of the textile, and cannot penetrate to form a multi-layer three-dimensional effect.

[0005] In a Chinese invention patent with a patent publication number of CN100586738B, a method for transferring a foam material is disclosed, and the method flow is as follows: S1 material preparation: prepare a foam material and a mesh material, a plurality of mesh holes are arranged on the mesh material, and the non-mesh hole part is a closed cloth surface; S2 pre-foaming: the aforementioned foam material is subjected to a foaming process until it is not completely foamed; S3 printing an ink layer: the cloth surface of the mesh material facing the foam material is coated with an ink layer; S4 hot pressing treatment: the foam material, the mesh material, and the ink layer are heated and pressurized together, so that the ink layer is thermally sublimated and infiltrated and transferred to the foam material, and the foam material has a convex part in the mesh hole due to foaming; S5 tearing off the mesh material: after the ink layer transfer is completed, tear off the mesh material from the foam material, and the process of transferring the pattern on the foam material is completed. The raised effect formed in this technology remains on the foam material, and the mesh fabric is torn off in order to obtain a foam material with a raised effect. The raised effect is produced by hot-pressing foaming. The hot-pressing foamed mesh fabric is easily torn off due to uneven force, which may cause burrs on the foam material and peeling of the ink layer pattern, thus affecting the appearance of the fabric and the yield rate.

[0006] In the Chinese invention patent application with the patent publication number CN107538830A, a composite fabric and its processing technology are disclosed. The method includes the following steps: positioning the rubber particles and the printed pattern on the surface of the base layer by the glue-applying equipment to form a scale unit; detecting the gap between adjacent scale units by the control unit, and positioning and cutting the fabric by the positioning die-cutting machine to form the above-mentioned gap; and pasting a base fabric on the surface of the base layer or the printed pattern layer by the composite machine. The base fabric can be leather or textile fabric. The scale structure described in this technology is produced by positioning and cutting after gluing, and the printed pattern surface will be pasted to the base fabric. The rubber particles and the printed pattern actually exist in the sandwich between the base fabric and the base fabric, which is not visually obvious. The appearance is mainly the scale effect presented on the base fabric.

[0007] In the Chinese invention patent application with the patent publication number CN109797586A, a naked eye three-dimensional printing method and naked eye three-dimensional fabric are disclosed. The method includes the following steps: S1 making a hot stamping pattern paper; coating a translucent first refractive layer, a pattern layer and a glue coating on the film substrate layer in sequence to make the hot stamping pattern paper; S2 hot stamping printing: laminating the fabric with the glue coating of the hot stamping pattern paper, applying pressure and heat to the fabric and the hot stamping pattern paper, so that the first refractive layer and the pattern layer on the hot stamping pattern paper are adhered to the fabric surface through the glue coating to form a hot stamping pattern. The technology uses the hot stamping pattern paper coated with the first refractive layer for hot stamping printing, and after hot stamping printing, the first refractive layer is placed on the outermost layer of the fabric. Since the first refractive layer has a translucent characteristic, it can refract light and refract the display content of the pattern layer to different places in space, so that the displayed content is separated when it reaches the human eyes, and the human eyes receive two images with parallax, thus producing a naked eye three-dimensional effect. The three-dimensional visual effect described in this technology originates from the flat pattern on the hot stamping template paper, which is located on the outermost layer of the fabric. The adhesion and durability of the refractive layer contained in it are greatly limited.

[0008] In the process of implementing the present invention, the inventors found that the prior art has the following problems:

[0009] In the prior art, the screen printing process used on textile fabrics can only cover the printing paste on the surface of the fabric, forming a coating effect with a thickness of less than 1.2mm on the surface, forming a stacked printing effect on the surface of the fabric. The printing and dyeing finishing technology can only form color and pattern effects on the surface of the fabric, or slightly penetrate into the fabric fibers, and can only form a color effect with a thickness of less than 0.1mm on the surface of the fabric, without a three-dimensional sense, and the local fineness is not high. The use of digital printing technology can form a fine and rich color effect on the fabric, mainly a flat effect. Although there is a 3D visual effect, there is no 3D thickness and three-dimensional touch. The existing bonding and hot pressing process forms a certain convex effect through gluing and bonding the fabric with hot pressing, which is the effect of the fabric covering the glue. The thickness is relatively thin, usually less than 1mm, and the fabric performance will be lost after hot pressing. Summary of the invention

[0010] In view of the above technical problems existing in the background technology, it is necessary to provide a multi-layer three-dimensional fabric and its production method and application to solve the technical problems in the prior art that the printing effect can only be on the surface of the fabric, the coating is thin, the three-dimensional thickness is single, and the three-dimensional touch is not strong.

[0011] To achieve the above object, in a first aspect of the present invention, the inventor provides a multi-layer three-dimensional fabric, comprising:

[0012] Base fabric layer;

[0013] Three-dimensional slurry layer: the three-dimensional slurry layer comprises a connected interlayer and an extrusion layer;

[0014] Mesh layer;

[0015] The mesh layer is connected to the three-dimensional slurry layer, and the three-dimensional slurry layer is divided into the interlayer and the extrusion layer. The part of the three-dimensional slurry layer protruding from the mesh layer is the extrusion layer, and the part of the three-dimensional slurry layer located between the base fabric layer and the mesh layer is the interlayer. The shape of the extrusion layer is a hemispherical shape or a columnar shape that protrudes away from the base fabric layer.

[0016] Different from the prior art, the above technical solution separates the three-dimensional slurry layer into the interlayer and the extrusion layer through the mesh layer, forming at least four layers of three-dimensional fabric including a base fabric layer, an interlayer, a mesh layer and an extrusion layer connected in sequence. The fabric of the base fabric layer can be a single layer, a sandwich or a laminated fabric of warp knitting, weft knitting or woven fabric, and the mesh layer is a single layer of mesh with a mesh structure, a certain hardness, mesh size, mesh skeleton width and strength. Before the surface is dried, the three-dimensional slurry layer penetrates through the mesh of the mesh layer under pressure to form a protrusion convex away from the base fabric layer, usually in the shape of a hemisphere or a column, to obtain a unique three-dimensional fabric with a gradual and varied thickness ranging from 0.5mm to 3mm, which adds more abundant, diverse and excellent choices for three-dimensional fabrics in the textile field.

[0017] As an embodiment of the present invention, the thickness of the interlayer is 0.3-2.5 mm, and the thickness of the extruded layer is 0.2-2.5 mm.

[0018] In this way, the interlayer supports a certain space for the mesh layer and the base fabric layer, constructing a three-dimensional height. This space can not only make the movement of air moisture smoother and provide better ventilation and dehumidification functions, but also form a three-dimensional, virtual and real multi-layered visual effect in combination with the mesh layer and the extruded layer. The extruded layer forms a rounded protrusion with a gradual thickness at the part protruding from the mesh layer, giving the fabric a dynamic and changing three-dimensional visual and tactile effect, adding a unique member to the three-dimensional fabric family.

[0019] As an embodiment of the present invention, the three-dimensional slurry layer comprises the following components by weight percentage:

[0020]

[0021] The PU thickener is a non-ionic polyurethane polymer.

[0022] In particular, the pH regulator is 2-amino-2-methyl-1-propanol, the silicone defoamer is a polyether siloxane copolymer, the dispersant is an alkoxy ammonium salt of a polycarboxylic acid polymer, the PU thickener is a polyurethane thickener, and the acrylic thickener is an ethyl acrylate and methacrylic acid copolymer. In this way, the special high rheological slurry constructed of four substances, namely cotton fiber, cellulose ether, PU thickener and acrylic thickener, ensures that the extruded layer that penetrates the mesh can form a rounded three-dimensional effect, and ensures that the extruded layer has a three-dimensional support and rapid shaping effect.

[0023] As an embodiment of the present invention, the multi-layer three-dimensional fabric further includes a printing layer, which is arranged on the base fabric layer. In this way, a five-layer three-dimensional fabric including a base fabric layer, a printing layer, an interlayer, a mesh layer and an extrusion layer can be formed, which enriches the color and pattern effects of the multi-layer three-dimensional fabric and enhances the layering of the multi-layer three-dimensional fabric.

[0024] In a second aspect of the present invention, the inventor provides a method for producing a multi-layer three-dimensional fabric, comprising the following steps:

[0025] S1 prepares a three-dimensional slurry layer slurry;

[0026] S2: placing a first screen having a first preset hollow pattern and a first thickness on the base fabric layer, filling the three-dimensional slurry layer with slurry into the first preset hollow pattern, and removing the first screen to form a three-dimensional slurry layer;

[0027] S3: placing the mesh layer on the three-dimensional slurry layer, and pressing a second screen having a second preset hollow pattern and a second thickness on the mesh layer, so that the three-dimensional slurry layer forms an extruded layer protruding from the mesh layer, and a sandwich layer between the base fabric layer and the mesh layer;

[0028] S4 static setting, heat curing;

[0029] The second preset hollow pattern is the same as the first preset hollow pattern, and the edge of the second preset hollow pattern is 1-3 mm larger than the edge of the first preset hollow pattern. The three-dimensional slurry layer slurry comprises the following components:

[0030]

[0031]

[0032] The PU thickener is a non-ionic polyurethane polymer.

[0033] Different from the prior art, the above technical solution forms a fabric with a rounded three-dimensional effect that shows through the mesh holes of the mesh layer through precise first screen scraping printing, mesh layer, second screen (a matching plate used with the first screen) positioning composite pressure extrusion, curing and other processes combined with special high rheological slurry, forming a three-dimensional tactile fabric with a thickness gradient having at least 4 layers of structure as a whole, providing and enriching a new way to produce multi-layer three-dimensional fabrics. The edge of the second preset hollow pattern is 1-3mm larger than the edge of the first preset hollow pattern, ensuring that the mesh can be fully stressed without damaging the edge of the hollow printing area, thereby maintaining the integrity of the pattern. When placing the mesh layer on the three-dimensional slurry layer, it is necessary to pay attention to the implementation when the three-dimensional slurry layer is not dry, otherwise, the mesh layer and the three-dimensional slurry layer cannot be fully bonded together, and an effective extrusion layer cannot be formed and the mesh adhesion strength is affected. The special high rheological slurry composed of four substances, namely cotton fiber, cellulose ether, PU thickener and acrylic thickener, ensures that the extruded layer through the mesh can form a rounded three-dimensional effect and quickly set, while ensuring that the interlayer between the base fabric layer and the mesh layer has a three-dimensional support effect. Thermal curing is to add 4% of the total mass percentage of isocyanate curing agent to the three-dimensional layer slurry, and naturally cure it in the range of 25-60℃.

[0034] As an embodiment of the present invention, the first thickness is 0.5-5mm, the length of the first preset hollow pattern is 5-200mm, and the width is 3-20mm. The length and width of the first preset hollow pattern are related to the thickness of the first screen, which can ensure that the three-dimensional slurry layer slurry can be completely printed out from the first screen. At the same time, when the second screen is pressed on the mesh layer, the mesh layer is physically squeezed, and the three-dimensional slurry layer slurry can be fully squeezed out from the mesh of the mesh layer to form a protrusion. Therefore, if the hollow thickness of the first screen is too small, the three-dimensional slurry layer thickness is too small to be squeezed out smoothly; conversely, if the hollow thickness of the first screen is too large, after the three-dimensional slurry layer slurry is scraped into the hollow pattern, removing the first screen is likely to cause the slurry to overflow, making the shape of the three-dimensional slurry layer uncontrollable and affecting the implementation of the subsequent process operations. There are also corresponding requirements for the length and width of the screen hollow pattern. If the width and length of the hollow pattern of the screen are too small, the three-dimensional slurry layer cannot be completely scraped and formed, resulting in uncontrollable thickness and shape. If the width and length are too large, it is easy to produce printing defects such as bubbles. Furthermore, the results of the subsequent process operation of forming the extrusion layer are uncontrollable. For example, if the extrusion layer effect is inconsistent, a rounded, gradually thickened hemispherical or cylindrical shape cannot be formed. Even when the size of the three-dimensional slurry layer is smaller than the size of the mesh of the gauze layer, the extrusion layer and interlayer cannot be formed. Therefore, in the present invention, controlling the length, width and thickness of the hollow pattern is important for forming an effective extrusion layer and interlayer.

[0035] As an embodiment of the present invention, the mesh size of the mesh layer is 1-10 mm, the skeleton width of the mesh layer is 0.5-2 mm, the warp breaking strength of the mesh layer is ≥150 N, and the weft breaking strength is ≥200 N. The present invention does not set an upper limit on the strength of the mesh layer, but the mesh skeleton width is selected to ensure that the mesh hardness is large enough to ensure that the second screen is pressed on the mesh layer to produce a hemispherical or columnar shape protruding from the mesh layer.

[0036] As an embodiment of the present invention, the force used when pressing the second screen having the second preset hollow pattern and the second thickness onto the mesh layer is 20-50N. Applying different forces can make the extruded layer reach the required protruding height. The magnitude of the force is related to the size of the designed hollow pattern and the thickness of the extruded layer. When the hollow pattern area is small or the extruded layer thickness is thin, the force is close to 20N. When the hollow pattern area is large or the extruded layer thickness is thick, the force is close to 50N. If the pressure of the second screen is too small, it is not enough to form an extruded layer, or the height of the extruded layer is too small; if the pressure of the second screen is too large, almost all of the three-dimensional slurry layers will protrude above the mesh layer and the interlayer will disappear, and the three-dimensional space and layering between the mesh layer and the base fabric layer of the three-dimensional multi-layer fabric of the present invention will be lost.

[0037] As an embodiment of the present invention, the step of printing on the base fabric layer to form a printing layer is also included. The printing layer can be printed on the base fabric layer and dried by screen printing, digital inkjet printing, thermal transfer and other processes. In this way, a five-layer three-dimensional fabric containing a base fabric layer, a printing layer, an interlayer, a mesh layer and an extrusion layer can be formed, enriching the color and pattern effects of the multi-layer three-dimensional fabric, and combining the extrusion layer with a gradient thickness and the mesh layer supported by the interlayer to enhance the layering of the multi-layer three-dimensional fabric.

[0038] In a third aspect of the present invention, the inventor provides an application of a multi-layer three-dimensional fabric, wherein the multi-layer three-dimensional fabric is prepared by the production method described in the second aspect of the present invention.

[0039] Different from the existing technology, the above technical solution applies three-dimensional fabrics with at least four-layer structure and gradient thickness of three-dimensional slurry layer to various industrial applications and process design fields, enriching and improving the performance and application scope of textile three-dimensional fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The multi-layer three-dimensional fabric described in Example 1;

[0041] Figure 2 This is a physical picture of a multi-layer three-dimensional fabric described in Example 1;

[0042] Figure 3 The multi-layer three-dimensional fabric described in Example 2;

[0043] Figure 4 A physical picture of a multi-layer three-dimensional fabric described in Example 2

[0044] Figure 5 A physical picture of a multi-layer three-dimensional fabric described in Example 2

[0045] Figure 6 This is a physical picture of a multi-layer three-dimensional fabric described in Example 3.

[0046] Description of reference numerals:

[0047] 1. Base fabric layer;

[0048] 2. Printing layer

[0049] 3. Interlayer;

[0050] 4. Mesh layer;

[0051] 5. Extrusion layer. DETAILED DESCRIPTION

[0052] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings. It should be understood that these embodiments are only used to illustrate the present application and are not used to limit the scope of the present application.

[0053] In the description of the present application, unless otherwise clearly specified and defined, the terms “first”, “second”, and “first” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0054] Example 1

[0055] A multi-layer three-dimensional fabric and its production method and application

[0056] See also Figure 1 , this embodiment provides a 4-layer three-dimensional fabric and its production method and application. Figure 1 The three-dimensional fabric shown contains a base fabric layer 1, an interlayer 3, a mesh layer 4 and an extrusion layer 5. The base fabric layer 1 is a single-layer mesh fabric woven by a warp knitting machine, the thickness of the interlayer is 0.3 mm, and the extrusion layer is a convex part of the mesh layer with a thickness gradient of 0.2-0.5 mm. The mesh layer is a single-layer mesh with a mesh size of 1 mm and a skeleton width of 0.5 mm. The mesh layer has a warp breaking strength of ≥150N and a weft breaking strength of ≥200N.

[0057] In this embodiment, the four-layer three-dimensional fabric and the production method thereof are as follows:

[0058] (1) Preparation of three-dimensional slurry layer slurry

[0059] In terms of mass percentage, 85% of aqueous polyurethane dispersion (Wanhua 5630), 0.2% of pH adjuster (2-amino-2-methyl-1-propanol), 0.19% of silicone defoamer (BYK 192, polyether siloxane copolymer), 0.6% of dispersant (BYK 190, alkoxy ammonium salt of polycarboxylic acid polymer), 2.0% of cotton fiber (60 mesh), 1.3% of PU thickener (Rohm and Haas ASE60, non-ionic ethoxy polyurethane polymer with a molecular weight of 30,000-50,000), 9.0% of cellulose ether (10% Asia Blue HEC 250, molecular weight 10K), 0.51% of acrylic thickener (Lubrizol SF-1, methacrylic acid copolymer), and 1.2% of propylene glycol were mixed evenly, and 4% of the above-mentioned total mass of isocyanate curing agent was added to obtain a three-dimensional slurry layer slurry. The viscosity of the slurry is 100000±10000 mPa·s at 7.5 rpm, 25000±2000 mPa·s at 75 rpm, and the surface drying time is 1 hour.

[0060] (2) Lay the base fabric layer (single-layer warp knitted mesh) flat on a flat platform. Place a first screen having a first preset hollow pattern and a hollow pattern thickness of 0.5 mm on the base fabric layer, fill the three-dimensional slurry layer slurry into the first preset hollow pattern by scraping, remove the first screen, and form a three-dimensional slurry layer. The length of the first preset hollow pattern is 5-200 mm (the longest distance is 200 mm, and the shortest distance is 5 mm), and the width is 3-20 mm (the longest distance is 20 mm, and the shortest distance is 3 mm).

[0061] (3) When the three-dimensional slurry layer is not dry, a single layer of mesh with a mesh size of 1 mm, a skeleton width of 0.5 mm, a warp breaking strength of the mesh layer of ≥150 N, and a weft breaking strength of ≥200 N is cut and placed on the three-dimensional slurry layer (the interval between the previous operation and the previous operation shall not exceed 5 minutes). Then, a second screen having a second preset hollow pattern (the same as the first preset hollow pattern, but the edge of the second preset hollow pattern is 1 mm larger than the edge of the first preset hollow pattern) and a hollow pattern thickness of 5 mm is pressed on the mesh layer with a pressure of 20 N, so that the three-dimensional slurry layer forms an extruded layer protruding from the mesh layer, and a sandwich layer between the base fabric layer and the mesh layer.

[0062] (4) Allow to set naturally at room temperature, then heat cure at 30°C to obtain Figure 1 , Figure 2 (Enlarged image), Figure 3 4 layers of 3D fabric shown.

[0063] The four-layer three-dimensional fabric obtained in this embodiment can be used to make shoe uppers, clothing exteriors, car interiors, home textile products, bags and other fields.

[0064] Example 2

[0065] A multi-layer three-dimensional fabric and its production method and application

[0066] See also Figure 4 , this embodiment provides a 5-layer three-dimensional fabric and its production method and application. Figure 4 The three-dimensional fabric shown contains a base fabric layer 1, a printed layer 2, an interlayer 3, a mesh layer 4 and an extruded layer 5. The base fabric layer 1 is a sandwich mesh woven by a warp knitting machine, the thickness of the interlayer is 2.5 mm, and the extruded layer is a convex part of the mesh layer with a thickness gradient of 1-2.5 mm. The mesh layer is a single-layer mesh with a mesh size of 4 mm and a skeleton width of 2.0 mm. The warp breaking strength of the mesh layer is ≥150N, and the weft breaking strength is ≥200N.

[0067] In this embodiment, the 5-layer three-dimensional fabric and the production method thereof are as follows:

[0068] (1) Preparation of three-dimensional slurry layer slurry

[0069] In terms of mass percentage, 87% of aqueous polyurethane dispersion (Wanhua 5630), 0.1% of pH regulator (2-amino-2-methyl-1-propanol), and 0.1% of organic silicon defoamer (BYK 192, polyether siloxane copolymer) 0.1%, dispersant (BYK190, alkoxy ammonium salt of polycarboxylic acid polymer) 0.55%, cotton fiber (60 mesh) 1.9%, PU thickener ((Rohm and Haas ASE60, non-ionic ethoxy polyurethane polymer with a molecular weight of 30,000-50,000) 1.0%, cellulose ether (10% Asia Blue HEC250, molecular weight 10K) 8.75%, acrylic thickener (Lubrizol SF-1, methacrylic acid copolymer) 0.1%, propylene glycol 0.5% are mixed evenly, and 3.5% of the above-mentioned total mass of isocyanate curing agent is added to obtain a three-dimensional slurry layer slurry. The viscosity of the slurry is 100000±10000mPa·s at 7.5rpm, 25000±2000mPa·s at 75rpm, and the surface drying time is 1h.

[0070] (2) Lay the base fabric layer 1 (sandwich mesh) flat on a flat platform. Use a digital printing process to form a preset printing layer 2 on the base fabric layer. Place a first screen with a first preset hollow pattern and a hollow pattern thickness of 4 mm on the base fabric layer, fill the three-dimensional slurry layer slurry into the first preset hollow pattern by scraping, remove the first screen, and form a three-dimensional slurry layer. The length of the first preset hollow pattern is 5-200 mm (the longest distance is 200 mm, and the shortest distance is 5 mm), and the width is 3-20 mm (the longest distance is 20 mm, and the shortest distance is 3 mm).

[0071] (3) When the three-dimensional slurry layer is not dry, a single layer of mesh with a mesh size of 4 mm, a skeleton width of 2.0 mm, a warp breaking strength of the mesh layer of ≥150 N, and a weft breaking strength of ≥200 N is cut and placed on the three-dimensional slurry layer (the interval between the previous operation and the previous operation shall not exceed 5 minutes). Then, a second screen having a second preset hollow pattern (the same as the first preset hollow pattern, but the edge of the second preset hollow pattern is 1.5 mm larger than the edge of the first preset hollow pattern) and a hollow pattern thickness of 4.5 mm is pressed on the mesh layer with a pressure of 50 N, so that the three-dimensional slurry layer forms an extruded layer 5 protruding from the mesh layer, and a sandwich layer between the base fabric layer and the mesh layer.

[0072] (4) Allow to set naturally at room temperature, then heat cure at 60°C to obtain Figure 4 and Figure 5 5 layers of 3D fabric shown.

[0073] The five-layer three-dimensional fabric obtained in this embodiment can be used to make shoe uppers, clothing exteriors, car interiors, home textile products, bags and other fields.

[0074] Example 3

[0075] A multi-layer three-dimensional fabric and its production method and application

[0076] Please see again Figure 4 , this embodiment provides a 5-layer three-dimensional fabric and its production method and application. Figure 4 The three-dimensional fabric shown contains a base fabric layer 1, a printed layer 2, an interlayer 3, a mesh layer 4 and an extruded layer 5. The base fabric layer 1 is a sandwich mesh woven by a warp knitting machine, the thickness of the interlayer is 1.5 mm, and the extruded layer is a convex part of the mesh layer with a thickness gradient of 0.2-1.5 mm. The mesh layer is a single-layer mesh with a mesh size of 10 mm and a skeleton width of 1 mm. The warp breaking strength of the mesh layer is ≥150N and the weft breaking strength is ≥200N.

[0077] In this embodiment, the 5-layer three-dimensional fabric and the production method thereof are as follows:

[0078] (1) Preparation of three-dimensional slurry layer slurry

[0079] In terms of mass percentage, 88% of aqueous polyurethane dispersion (Wanhua 5630), 0.2% of pH regulator (2-amino-2-methyl-1-propanol), 0.3% of silicone defoamer (organic silicone defoamer (BYK 192, polyether siloxane copolymer), 0.5% of dispersant (BYK 190, alkoxy ammonium salt of polycarboxylic acid polymer), 0.5% of cotton fiber (60 mesh), 1.3% of PU thickener (Rohm and Haas ASE60, non-ionic ethoxylated polyurethane polymer with a molecular weight of 30,000-50,000), cellulose ether (10% of Asia Blue HEC 250, molecular weight 10K) 7.0%, acrylic thickener (Lubrizol SF-1, methacrylic acid copolymer) 1.0%, propylene glycol 1.2% were mixed evenly, and 3.5% of the above total weight of isocyanate curing agent was added to obtain a three-dimensional slurry layer slurry. The viscosity of the slurry was 100000±10000mPa·s at 7.5rpm, 25000±2000mPa·s at 75rpm, and the surface drying time was 1h.

[0080] (2) Lay the base fabric layer 1 flat on a flat platform. Use screen printing technology to offset print on the base fabric layer to form a preset print layer 2. Place a first screen having a first preset hollow pattern and a hollow pattern thickness of 3.0 mm on the base fabric layer, fill the three-dimensional slurry layer slurry into the first preset hollow pattern by scraping, remove the first screen, and form a three-dimensional slurry layer. In the above steps, modification steps can also be added to the base fabric layer, such as including but not limited to jacquard, electric embroidery, lamination, dyeing and finishing, etc. The length of the first preset hollow pattern is 5-200 mm (the longest distance is 200 mm, and the shortest distance is 5 mm), and the width is 3-20 mm (the longest distance is 20 mm, and the shortest distance is 3 mm).

[0081] (3) When the three-dimensional slurry layer is not dry, a single layer of mesh with a mesh size of 10 mm, a skeleton width of 1 mm, a warp breaking strength of the mesh layer of ≥150 N, and a weft breaking strength of ≥200 N is cut and placed on the three-dimensional slurry layer (the interval between the previous operation and the previous operation shall not exceed 10 minutes). Then, a second screen having a second preset hollow pattern (the same as the first preset hollow pattern, but the edge of the second preset hollow pattern is 1.5 mm larger than the edge of the first preset hollow pattern) and a hollow pattern thickness of 4.5 mm is pressed onto the mesh layer with a pressure of 50 N, so that the three-dimensional slurry layer forms an extruded layer 5 protruding from the mesh layer, and a sandwich layer 3 between the base fabric layer and the mesh layer.

[0082] (4) Allow to set naturally at room temperature, then heat cure at 60°C to obtain Figure 6 5 layers of 3D fabric shown.

[0083] The five-layer three-dimensional fabric obtained in this embodiment can be used to make shoe uppers, clothing exteriors, car interiors, home textile products, bags and other fields.

[0084] The multi-layer three-dimensional fabrics obtained in the above Examples 1-3 were tested for moisture resistance, alkali resistance, mesh peeling strength, three-dimensional slurry layer peeling strength, bending resistance, sweat resistance, aging resistance, etc. The test methods are as follows:

[0085] The bending resistance test equipment is the GT-7071-B instrument of High Speed ​​Rail Testing Instrument (Dongguan) Co., Ltd. The sample size is 3.7cm x 6.7cm in A direction and 3.7cm x 6.7cm in B direction, at least one piece each. After the sample is installed in the clamp, it is tested 100,000 times;

[0086] The high temperature and high humidity resistance test was carried out on the GT-7005-R instrument of High Speed ​​Rail Testing Instrument (Dongguan) Co., Ltd., and the test conditions were 80±2℃, 95±2%, and 168h;

[0087] The alkali resistance test method is to cut a 2-inch*2-inch sample, soak it in 900mL of freshly prepared 10% NaOH solution for 24 hours, then rinse it with clean water for 1 minute, dry the surface moisture with absorbent paper, compare it with the standard sample, and evaluate the surface changes;

[0088] The peel strength test was conducted using a computer servo tensile testing machine AG-1008-s from Dongguan Aoguan Instrument Co., Ltd.;

[0089] The aging test was conducted using Q-lab's QUV / Q xenon lamp aging test chamber (light source UVA-340), with the cut piece size being 12cm x 7.5cm, 4 pieces at a time.

[0090] The test results of the three-dimensional multi-layer fabrics obtained in Examples 1-3 of the present invention are shown in Table 1.

[0091] Table 1 Test results of three-dimensional multi-layer fabrics of Examples 1-3

[0092]

[0093]

[0094] Different from the prior art, the above-mentioned embodiment of the present invention combines a special high rheological slurry through thick coating, hollow plate, and mesh to form a rounded three-dimensional effect that shows through the mesh, forming a four-layer to five-layer three-dimensional effect as a whole. Since the thickness of the extruded layer is gradual, the three-dimensional slurry layer visually presents a smudge effect like an ink painting under the action of the mesh, and cooperates with the printing layer on the base fabric layer to form a more diverse and varied three-dimensional effect fabric. After testing, the multi-layer three-dimensional fabric has excellent moisture resistance, alkali resistance, mesh peeling strength, three-dimensional slurry layer peeling strength, bending resistance, sweat resistance, and aging resistance, and can be used in many fields such as shoe uppers, clothing exteriors, automotive interiors, home textile products, and luggage.

[0095] It should be noted that, although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present invention specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A multi-layer three-dimensional fabric, characterized in that: include: Base fabric layer; Three-dimensional slurry layer: the three-dimensional slurry layer comprises a connected interlayer and an extrusion layer; Mesh layer; The mesh layer is connected to the three-dimensional slurry layer, and the three-dimensional slurry layer is divided into the interlayer and the extrusion layer. The part of the three-dimensional slurry layer protruding from the mesh layer is the extrusion layer. The extrusion layer is a protrusion protruding from the mesh layer with a gradual thickness. Before the surface is dried, the three-dimensional slurry layer penetrates through the mesh holes of the mesh layer under pressure to form a protrusion protruding away from the base fabric layer. The thickness of the extrusion layer is 0.2-2.5 mm. The part of the three-dimensional slurry layer located between the base fabric layer and the mesh layer is the interlayer, and the shape of the extrusion layer is a hemispherical shape or a cylindrical shape protruding away from the base fabric layer.

2. The multi-layer three-dimensional fabric according to claim 1, characterized in that: The thickness of the interlayer is 0.3-2.5 mm.

3. The multi-layer three-dimensional fabric according to claim 1, characterized in that: In terms of weight percentage, the three-dimensional slurry layer comprises the following components: Waterborne polyurethane 85-88%; pH adjuster 0.1-0.2%; Silicone defoamer 0.1-0.3%; Dispersant 0.5-0.6%; Cotton fiber 0.5-2.0%; PU thickener 1.0-1.3%; Cellulose ether 7.0-9.0%; Acrylic thickener 0.1-1.0%; Propylene glycol 0.5-1.2%, The PU thickener is a non-ionic polyurethane polymer.

4. The multi-layer three-dimensional fabric according to claim 1, characterized in that: It also includes a printing layer, which is arranged on the base fabric layer.

5. A method for producing a multi-layer three-dimensional fabric as claimed in claim 1, characterized in that: The following steps are involved: S1 prepares a three-dimensional slurry layer slurry; S2: placing a first screen having a first preset hollow pattern and a first thickness on the base fabric layer, filling the three-dimensional slurry layer with slurry into the first preset hollow pattern, and removing the first screen to form a three-dimensional slurry layer; S3: placing the mesh layer on the three-dimensional slurry layer, and pressing a second screen having a second preset hollow pattern and a second thickness on the mesh layer, so that the three-dimensional slurry layer forms an extruded layer protruding from the mesh layer, and a sandwich layer between the base fabric layer and the mesh layer; S4 static setting and heat curing; The second preset hollow pattern is the same as the first preset hollow pattern, and the edge of the second preset hollow pattern is 1-3 mm larger than the edge of the first preset hollow pattern. The three-dimensional slurry layer slurry comprises the following components: Waterborne polyurethane 85-88%; pH adjuster 0.1-0.2%; Silicone defoamer 0.1-0.3%; Dispersant 0.5-0.6%; Cotton fiber 0.5-2.0%; PU thickener 1.0-1.3%; Cellulose ether 7.0-9.0%; Acrylic thickener 0.1-1.0%; Propylene glycol 0.5-1.2%, The PU thickener is a non-ionic polyurethane polymer.

6. The method for producing a multi-layer three-dimensional fabric according to claim 5, characterized in that: The first thickness is 0.5-5 mm, and the length and width of the first preset hollow pattern are 3-20 mm and 3-20 mm respectively.

7. The method for producing a multi-layer three-dimensional fabric according to claim 6, characterized in that: The mesh size of the mesh layer is 1-10 mm, the skeleton width of the mesh layer is 0.5-2 mm, the warp breaking strength of the mesh layer is ≥150 N, and the weft breaking strength is ≥200 N.

8. The method for producing a multi-layer three-dimensional fabric according to claim 6, characterized in that: The force used when pressing the second screen having the second preset hollow pattern and the second thickness onto the mesh layer is 20-50 N.

9. The method for producing a multi-layer three-dimensional fabric according to claim 6, characterized in that: The step of printing on the base fabric layer to form a printing layer is also included.

10. An application of a multi-layer three-dimensional fabric, characterized in that: The multi-layer three-dimensional fabric is prepared by the production method described in any one of claims 6-9.

Images