Three-dimensional printing process of fabric and shoe fabric

By combining water-based polyurethane dispersion and pressing plate, the problems of complex and long process of multi-layer three-dimensional pattern in traditional printing technology are solved, and three-dimensional paste patterns with good wear resistance and hand feel are realized, which are suitable for shoe material fabrics.

CN117738016BActive Publication Date: 2025-12-26FUJIAN HUAFENG NEW MATERIALS
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Patent Information

Application Number
CN202311764634.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-20
Publication Date
2025-12-26
Estimated Expiration
2043-12-20

AI Technical Summary

Technical Problem

Traditional printing processes are complex and lengthy when forming multi-layered three-dimensional patterns, and the RPU raw materials used are not environmentally friendly. Acrylic pastes cannot meet the bending resistance requirements of shoe materials, resulting in poor hand feel.

Method used

The slurry, with water-based polyurethane dispersion as the main component, is combined with slurry pressing and slurry pulling processes. The slurry blocks of different heights are formed on the fabric through a slurry pressing plate to form a multi-layered three-dimensional pattern. Rigid silicone paper is used as the slurry pressing plate to control the flowability and adhesion of the slurry.

Benefits of technology

It enables the simple and efficient formation of multi-layered three-dimensional patterns, improves the wear resistance and adhesion of the paste, enhances the feel, meets the bending resistance requirements of shoe materials, and reduces the complexity of the printing process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a three-dimensional printing process of a fabric and a shoe fabric, and comprises the following steps: preparing a slurry; coating the slurry on the fabric, drawing the slurry according to the height of a pattern, and forming a slurry three-dimensional pattern corresponding to the height of the pattern; covering a slurry pressing plate with hollows on the slurry three-dimensional pattern, extruding the slurry pressing plate towards the fabric, obtaining a plurality of blocks with different heights at the hollows, and then removing the slurry pressing plate; and the slurry pattern formed by the plurality of blocks with different heights; the slurry pattern achieves the coating appearance and wear-resistant and bending-resistant effect of multi-level printing of silk screen printing, maintains the adhesion to the fabric, and reduces the process and complexity of the application of the silk screen printing process.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing process, and in particular to a three-dimensional printing process of fabric and shoe fabric. BACKGROUND

[0002] At present, printing technology is widely used in the textile market, especially in the shoe material market. With the demand for personalized consumption, some special three-dimensional 3D effect patterns are increasingly sought after by the consumer market. Traditional printing processes mainly use RPU (hard polyurethane foam plastic) for injection molding to form prints, but RPU raw materials are oily, RPU raw materials are not environmentally friendly, and the formed prints are hard and have poor adhesion to the fabric.

[0003] Patent No. CN202210604965.6 discloses a coating digital three-dimensional 3D printing process, which mainly forms a slurry pattern with a three-dimensional effect on the surface of the fabric by winding the fabric on a hanging rack, drawing a draft according to the specific pattern, selecting a suitable screen, making a slurry screen, and scraping the slurry screen. The above technical solution uses traditional one-time slurry, and the overall height of the slurry pattern is consistent, which cannot achieve multi-level effect, the surface is sharp, and the hand feeling is poor; if different heights of the slurry pattern are needed, multiple screen printing and scraping are required, usually 20 slurry screens and more than 100 printing times are required, the process is long and complex, and if the screen order is wrong, the whole day's work will be wasted. In order to maintain the wear resistance of the slurry while increasing the bending resistance of the slurry pattern, the gap between the grids left by the slurry pattern needs to be improved (the smaller the gap, the smaller the effect on wear resistance and the improvement of bending resistance), but too small gap can easily cause the slurry to stick together during slurry. In addition, the slurry used for slurry is acrylic acid, which has the disadvantage of hot stickiness and cold brittleness, and cannot meet the requirements of shoe material bending resistance, and the surface is in a protruding state due to the high thixotropy, without a neat edge. SUMMARY

[0004] Therefore, it is necessary to provide a three-dimensional printing process of fabric to solve the problems of complex process and long process of using silk screen printing to realize multi-level slurry pattern.

[0005] To achieve the above purpose, the present application provides a three-dimensional printing process of fabric, which comprises the following steps:

[0006] Preparation of slurry;

[0007] Coating the slurry on the fabric, drawing the slurry according to the height of the pattern, and forming a three-dimensional slurry pattern corresponding to the height of the pattern;

[0008] A hollow pressing plate is covered on the three-dimensional pattern of the paste, and the pressing plate is pressed towards the fabric direction, so that several blocks with different heights are obtained at the hollow part, and then the pressing plate is removed;

[0009] The paste pattern is composed of several blocks with different heights.

[0010] Further, the viscosity of the paste is 100000-140000cps, and the thixotropy is 4-6 。

[0011] Further, the paste contains 86%-87% of water-based polyurethane dispersion;

[0012] pH regulator 0.1-0.3%;

[0013] Organic silicon defoaming agent 0.4%-0.5%;

[0014] Dispersant 1%;

[0015] Fumed silica 1-2%;

[0016] PU thickener 1%;

[0017] Leveling agent 0.3-0.5%;

[0018] PTF thickener 3-3.2%;

[0019] Propylene glycol 5-5.5%.

[0020] Further, the addition amount of the PTF thickener is 3%, and the addition amount of the leveling agent is 0.5%.

[0021] Further, the PTF thickener is Huntsman printing thickener PTF-RV.

[0022] Further, the hollow pressing plate is a pressing plate with several small grids.

[0023] Further, the several small grids are continuous small grids.

[0024] Further, the spacing between the small grids is 0.5mm-1mm.

[0025] Further, the pressing plate is a hard silicone oil paper.

[0026] A shoe fabric is made by using the above-mentioned three-dimensional printing process.

[0027] Different from the prior art, the technical scheme combines the slurry pressing process and the slurry pulling process, pulls the slurry on the fabric through the slurry pulling process, forms the slurry three-dimensional pattern corresponding to the height of different parts of the pattern (the height of different parts of the slurry three-dimensional pattern is also different) according to the height of different parts of the pattern (the height of different parts is different), and then uses the slurry pressing process to extrude the slurry in the downward direction of the fabric by using the slurry pressing plate, so as to obtain blocks with different heights at the hollowed-out parts and obtain the slurry pattern composed of a plurality of blocks; the slurry pattern achieves the coating appearance and wear-resistant and bending-resistant effect of multi-level printing of silk screen printing, maintains the adhesion to the fabric, and reduces the process and complexity of the application of the silk screen printing process. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A three-dimensional printing process flowchart of the fabric of the present application;

[0029] Figure 2 A structure schematic diagram of the slurry pressing plate of the present application;

[0030] Figure 3 A structure schematic diagram of the present application after the fabric is coated with slurry;

[0031] Figure 4 A structure schematic diagram of the present application when the slurry pressing plate is about to extrude the slurry three-dimensional pattern;

[0032] Figure 5 A structure schematic diagram of the present application after the slurry pressing plate extrudes the slurry three-dimensional pattern;

[0033] Figure 6 A structure schematic diagram of the slurry pattern of the present application.

[0034] BRIEF DESCRIPTION OF DRAWINGS:

[0035] 10, slurry pressing plate;

[0036] 101, small grid;

[0037] 20, fabric;

[0038] 30, slurry;

[0039] 40, slurry three-dimensional pattern;

[0040] 50, slurry pattern;

[0041] 501, block;

[0042] D, distance between small grids. DETAILED DESCRIPTION

[0043] In order to explain the technical content, structural features, purposes and effects of the technical scheme in detail, the following will be described in detail in combination with specific embodiments and the accompanying drawings.

[0044] The term "embodiment" is mentioned in this document means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0045] Unless otherwise defined, the meaning of technical terms used in this document is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this document is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0046] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this document generally represents that the associated objects before and after are a "or" logical relationship.

[0047] In this application, such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between them.

[0048] In this application, without more limitation, the "includes", "contains", "has" or other similar expressions used in the statement are intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of other elements in the process, method or product including the described elements, so that the process, method or product including a series of elements can not only include those limited elements, but also include other elements not explicitly listed, or also include the elements inherent in such process, method or product.

[0049] As the same understanding as in the "Patent Examination Guidelines", in this application, "greater than", "less than", "exceed" and other expressions are understood as not including the number; "above", "below", "within" and other expressions are understood as including the number. In addition, the meaning of "multiple" in the description of the embodiments of the present application is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly limited.

[0050] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0051] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0052] See Figures 1 to 6 As shown, the present invention provides a three-dimensional printing process for fabrics, which includes the following steps:

[0053] S1. Prepare 30 ml of slurry;

[0054] S2. Apply paste 30 to fabric 20, and stretch paste 30 according to the height of the pattern to form a three-dimensional paste pattern 40 corresponding to the height of the pattern.

[0055] S3. Cover the three-dimensional pattern 40 of the paste with a hollowed-out pressing plate 10. After pressing the pressing plate 10 towards the fabric 20, several blocks 501 of different heights are obtained in the hollowed-out area. Then the pressing plate 10 is removed.

[0056] S4, a slurry pattern 50 composed of several blocks 501 of varying heights.

[0057] The above technical scheme combines the slurry process and the drawing process, draws the slurry 30 on the fabric 20 through the drawing process, forms the slurry three-dimensional pattern 40 corresponding to the height of different parts of the pattern (the height of different parts is different), and then uses the slurry process to extrude the fabric 20 in the direction of the fabric 20 by using the pressing plate 10 to obtain the blocks 501 with different heights at the hollowed-out parts to obtain the slurry pattern 50 composed of a plurality of blocks 501; the slurry pattern 50 achieves the coating appearance and wear-resistant effect of multi-level printing of silk screen printing, maintains the adhesion to the fabric 20, and reduces the process and complexity of the application of the silk screen printing process. The pressing plate 10 is a plate-shaped object with a certain thickness, which has a certain hardness and does not deform when the pressing plate 10 is extruded in the direction of the fabric 20. After the hollowed-out pressing plate 10 is extruded in the direction of the fabric 20, a plurality of blocks 501 with different heights are obtained at the hollowed-out parts, and the slurry pattern 50 composed of a plurality of blocks 501.

[0058] In some embodiments of the present application, the viscosity of the slurry is 100000-140000 cps, and the thixotropy is 4-6. When the thixotropy and viscosity of the slurry 30 are too small, the slurry 30 flows too fast, and two situations will occur: one is that the drawing process cannot be performed; the other is that the slurry three-dimensional pattern 40 cannot be shaped due to the fast flow under the influence of gravitational potential energy, and directly deforms, so that the height of the slurry three-dimensional pattern 40 is insufficient, and the blocks 501 cannot be formed after being extruded by the pressing plate 10, and collapse. When the thixotropy and viscosity of the slurry 30 are too large, the slurry 30 flows too slowly, and two situations will occur: one is that the drawing process cannot be performed; the other is that a large force is required to draw the slurry during the drawing process, the surface of the slurry three-dimensional pattern 40 after drawing is uneven, and the surface has no flowability, and is in a protruding shape, and the edges of the slurry three-dimensional pattern 40 are not neat, which affects the appearance and touch feeling, and it is difficult to extrude the slurry three-dimensional pattern 40 in the direction of the fabric 20 during the extrusion by the pressing plate 10, and the blocks 501 with different heights cannot be obtained at the hollowed-out parts. In order to make the slurry three-dimensional pattern 40 stable and without deformation, the viscosity of the slurry 30 is preferably 100000-140000 cps, and the thixotropy is 4-6. The slurry 30 with the viscosity and thixotropy in this range is easy to form the slurry three-dimensional pattern 40 corresponding to the height of the pattern, the surface of the slurry three-dimensional pattern 40 after drawing is flat, and the surface has flowability, and is in a protruding shape, the edges of the slurry three-dimensional pattern 40 are neat, the blocks 501 are obtained at the hollowed-out parts during the extrusion by the pressing plate 10, and the slurry pattern 50 composed of a plurality of blocks 501 is obtained, the blocks 501 are formed and solidified after extrusion, and the surface has a certain flowability, and the surface and edges of the blocks 501 are leveled; the surface and edges of the blocks 501 are flat, and have an aesthetic appearance and good touch feeling.

[0059] In some embodiments of the present application, the paste 30 comprises an aqueous polyurethane dispersion 86%-87%. The aqueous polyurethane has water as solvent, and has the advantages of no pollution, safe and reliable, excellent mechanical properties, good compatibility, easy modification, etc. The paste pattern 50 made of the polyurethane paste 30 is flexible and wear-resistant, and can be used as a three-dimensional printing process for the fabric 20. When the polyurethane replaces acrylic as the paste 30, the shortcomings of hot adhesion and cold brittleness of the acrylic resin are overcome, the finished fabric 20 has a soft and full hand feeling, good flexibility and wear resistance, and can meet the requirements of shoe materials for bending resistance, and can be widely used on shoe uppers.

[0060] In order to make the thixotropy and viscosity of the paste 30 in a suitable range, and ensure the smooth progress of the paste drawing process and the paste pressing process, the PTF thickening agent and the leveling agent are added to the above-mentioned aqueous polyurethane paste. The PTF thickening agent is a polymer thickening agent of acrylic monomer, which is a liquid with flowability, convenient to prepare and use, easily soluble in water, and can quickly produce uniform aqueous polyurethane paste. It is very convenient for the preparation of the aqueous polyurethane paste in the printing process. The PTF thickening agent is directly added in the production process, and the mixed system can effectively achieve the required thickening effect. It has good compatibility with other additives, can thicken the paste 30, and the prepared aqueous polyurethane paste can also be mixed with various water-in-oil type paste. The leveling agent is a paste 30 additive, which can promote the paste 30 to form a flat, smooth and uniform surface during the drying and film forming process. By adding the leveling agent to the aqueous polyurethane paste, the aqueous polyurethane paste has a flow and drying film forming process after the paste drawing process and the paste pressing process, and then gradually forms a flat, smooth and uniform surface, so that the aqueous polyurethane paste has good leveling property.

[0061] In some embodiments of the present application, the amount of the flow agent added is 0.3-0.5%; the amount of the PTF thickening agent added is 3-3.2%. The amount of the PTF thickening agent and the flow agent added affects the viscosity and thixotropy of the water-based polyurethane paste, which in turn affects the morphological flow of the paste 30, and further affects whether the pulling and pressing processes proceed smoothly. When the amount of the PTF thickening agent added is less than 3% and the amount of the flow agent added is less than 0.3%, the pulling process fails due to the paste's too fast morphological flow, which cannot be shaped and is directly deformed due to the influence of gravitational potential energy, resulting in insufficient height of the paste three-dimensional pattern 40, and after the paste three-dimensional pattern 40 is pressed by the pressing plate 10, the block 501 fails to be shaped and collapses. When the amount of the PTF thickening agent added is greater than 3.2% and the amount of the flow agent added is greater than 0.5%, a larger force is required to pull the paste during the pulling process, and the surface of the paste three-dimensional pattern 40 after pulling is uneven and lacks flowability, appearing as protrusions without neat edges, affecting the appearance and touch feeling. During the pressing process, it is difficult for the paste three-dimensional pattern 40 to be pressed towards the fabric 20, and it is impossible to obtain blocks 501 with different heights in the hollowed-out parts. After repeated experiments and tests, it is found that when the amount of the flow agent added is 0.3-0.5% and the amount of the PTF thickening agent added is 3-3.2%, it is easy to form a paste three-dimensional pattern 40 corresponding to the height of the pattern; the surface of the paste three-dimensional pattern 40 after pulling is flat and has flowability, appearing as protrusions, and the edges of the paste three-dimensional pattern 40 are neat; during the pressing process, blocks 501 with different heights are obtained in the hollowed-out parts of the pressing plate 10, and a paste pattern 50 composed of a plurality of blocks 501 is obtained; after pressing, the blocks 501 are shaped and solidified, and the surface has a certain flowability, and the surface and edges of the blocks 501 are leveled; the surface and edges of the blocks 501 are flat, and the blocks 501 have an aesthetic appearance and a good touch feeling.

[0062] The hollowed-out pressing plate 10 is a pressing plate 10 having a plurality of small cells 101. The above-mentioned pressing plate 10 is a plate-shaped object with a certain thickness, which has a certain hardness and does not deform when the pressing plate 10 is pressed towards the fabric 20, such as hard silicone paper. The small cells 101 on the pressing plate 10 are used to obtain corresponding blocks 501 at each small cell 101 after the pressing plate 10 is pressed towards the fabric 20, i.e., the paste three-dimensional pattern 40 is divided into a plurality of blocks 501 by the pressing plate 10, and a paste pattern 50 composed of a plurality of blocks 501 is obtained. The small cells 101 on the pressing plate 10 are formed by cutting, and the above-mentioned cutting can be performed by a laser cutting machine. The shape of the small cells 101 can be determined according to the actual needs of the blocks 501, such as square, triangular, and rhombic shapes. When the pressing plate 10 is pressed towards the fabric 20, the blocks 501 obtained are square columns, triangular columns, and rhombic columns, etc.

[0063] In order to prevent the pulp 30 from accumulating on the fabric 20 in the pressing process, the pulp 30 on the three-dimensional pattern 40 of the pulp 30 is pressed by the pressing plate 10 to form a thick layer of pulp 30 between the small grids 101 on the fabric 20, and the pulp 30 layer is solidified on the fabric 20, affecting the ductility, hand feeling and air permeability of the fabric 20. Therefore, the small grids 101 on the pressing plate 10 are preferably continuous small grids 101, so that the pulp 30 on the three-dimensional pattern 40 of the pulp 30 is as much as possible to be a block 501, reducing the accumulation of the pulp 30 on the fabric 20, so that the fabric 20 has better ductility, hand feeling and air permeability, and the wear resistance of the pulp pattern 50 is increased. In order to further increase the wear resistance of the pulp pattern 50, the spacing between the blocks 501 needs to be reduced, so the spacing D between the continuous small grids on the pressing plate 10 needs to be reduced. Of course, the smaller the spacing between the blocks 501, the higher the wear resistance of the pulp pattern 50, but the strength of the pressing plate 10 needs to be considered. If the spacing D between the small grids on the pressing plate 10 is too small, the strength of the pressing plate 10 is affected, and the pressing plate 10 is easily damaged in the pressing process, causing the process to be interrupted. The spacing D between the small grids is preferably 0.5mm-1mm. The pressing plate 10 with the spacing D between the small grids in this range satisfies the wear resistance of the pulp pattern 50, and also satisfies the strength requirement of the pressing plate 10.

[0064] In order to better understand the present application, the following five embodiments are provided for further illustration.

[0065] Example one:

[0066] Pulp formula:

[0067]

[0068] The viscosity of the prepared pulp 30 is 80000cps measured by a viscometer (Shanghai Changji Geological Instrument Co., Ltd. 100# rotor 7.5rpm), and the thixotropy is 3 by calculation.

[0069] The pulp three-dimensional pattern 40 is obtained by the pulp pressing process, and the blocks 501 fail to be formed after being pressed by the pressing plate 10.

[0070] Example two:

[0071] Pulp formula:

[0072]

[0073] The viscosity of the prepared pulp 30 is 120000cps measured by a viscometer (Shanghai Changji Geological Instrument Co., Ltd. 100# rotor 7.5rpm), and the thixotropy is 4.6 by calculation.

[0074] The surface of the slurry three-dimensional pattern 40 after drawing is flat, and the surface has fluidity and is in a protruding shape. The edges of the slurry three-dimensional pattern 40 are neat. When the slurry plate 10 is extruded, different height blocks 501 are obtained at the hollowed-out parts, and a slurry pattern 50 composed of a plurality of blocks 501 is obtained. After extrusion, the blocks 501 are shaped and solidified, and the surface has a certain fluidity, so that the surface and edges of the blocks 501 are leveled. The surface and edges of the blocks 501 are flat, and have aesthetic appearance and good touch feeling.

[0075] Example three:

[0076] Slurry formula:

[0077]

[0078]

[0079] The viscosity of the prepared slurry 30 is 120000 cps, and the thixotropy is 4.8.

[0080] The surface of the slurry three-dimensional pattern 40 after drawing is flat, and the surface has fluidity and is in a protruding shape. The edges of the slurry three-dimensional pattern 40 are neat. When the slurry plate 10 is extruded, different height blocks 501 are obtained at the hollowed-out parts, and a slurry pattern 50 composed of a plurality of blocks 501 is obtained. After extrusion, the blocks 501 are shaped and solidified, and the surface has a certain fluidity, so that the surface and edges of the blocks 501 are leveled. The surface and edges of the blocks 501 are flat, and have aesthetic appearance and good touch feeling.

[0081] Example four:

[0082] Slurry formula:

[0083]

[0084] The viscosity of the prepared slurry 30 is 125000 cps, and the thixotropy is 5.

[0085] The surface of the slurry three-dimensional pattern 40 after drawing is flat, and the surface has fluidity and is in a protruding shape. The edges of the slurry three-dimensional pattern 40 are neat. When the slurry plate 10 is extruded, different height blocks 501 are obtained at the hollowed-out parts, and a slurry pattern 50 composed of a plurality of blocks 501 is obtained. After extrusion, the blocks 501 are shaped and solidified, and the surface has a certain fluidity, so that the surface and edges of the blocks 501 are leveled. The surface and edges of the blocks 501 are flat, and have aesthetic appearance and good touch feeling.

[0086] Example five:

[0087] Slurry formula:

[0088]

[0089] The viscosity of the prepared slurry 30 is 160000 cps, and the thixotropy is 7.

[0090] The surface of the slurry after drawing is uneven, and the surface has no flowability, is protruding, and has no neat edges, affecting the appearance and touch feeling. When the slurry is extruded by the pressing plate 10, it is difficult to extrude in the direction of the fabric 20.

[0091] A shoe material fabric is made by using the above fabric three-dimensional printing process. The slurry pattern 50 on the shoe material fabric has a 3D three-dimensional appearance effect and strong wear resistance. The slurry pattern 50 also maintains the adhesion to the shoe material fabric 20, and the slurry pattern 50 meets the requirements of the shoe material bending resistance.

[0092] It should be noted that although the above embodiments have been described in this paper, the patent protection scope of the present application is not limited thereby. Therefore, based on the innovative idea of the present application, the changes and modifications of the embodiments described in this paper, or the equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A process for three-dimensional printing of a fabric, characterized in that, It comprises the following steps: Preparation of a slurry with a viscosity of 100000-140000 cps and a thixotropy of 4-6; Coating of the slurry on the fabric, drawing of the slurry according to the height of the pattern to form a three-dimensional pattern of the slurry corresponding to the height of the pattern; Covering of the three-dimensional pattern of the slurry with a hollowed-out pressing plate, the hollowed-out pressing plate being a pressing plate with a plurality of small cells, the spacing between the small cells being 0.5-1 mm; after extruding the pressing plate towards the fabric, a plurality of blocks with different heights are obtained at the hollowed-out parts, and then the pressing plate is removed; Obtaining of the slurry pattern composed of a plurality of blocks with different heights.

2. The three-dimensional printing process for fabric according to claim 1, wherein, The slurry comprises: Waterborne polyurethane dispersion 86-87%; pH regulator 0.1-0.3%; Organic silicon defoaming agent 0.4-0.5%; Dispersant 1%; Fumed silica 1-2%; PU thickener 1%; Leveling agent 0.3-0.5%; PTF thickener 3-3.2%; Propylene glycol 5-5.5%.

3. The three-dimensional printing process for fabric according to claim 2, wherein, The addition amount of the PTF thickener is 3%, and the addition amount of the leveling agent is 0.5%.

4. The three-dimensional printing process for fabric according to claim 3, wherein, The PTF thickener is Huntsman Pigment Printing Thickener PTF-RV.

5. The three-dimensional printing process for fabric of claim 1, wherein, The plurality of small cells are continuous small cells.

6. The three-dimensional printing process for fabric of claim 1, wherein, The pressing plate is a hard silicone oil paper.

7. A shoe fabric made by the three-dimensional printing process of the fabric according to any one of claims 1-6.

Citation Information

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