A stereoscopic texture water transfer printing PVA layer, a composite layer and a preparation method thereof

Abstract

A kind of stereoscopic texture water transfer printing PVA layer, composite layer and its preparation method, preparation method, including steps (S1) are processed on the surface of substrate original stereoscopic texture;Step (S2) is applied PVA slurry on the surface of substrate, and PVA slurry is covered in original stereoscopic texture;Step (S3) is that PVA slurry forms PVA layer, and PVA layer forms soluble stereoscopic texture on one side of original stereoscopic texture;Step (S4) is that substrate is separated from PVA layer.The preparation method of composite layer, its step (S5) is applied oil-soluble ink on one side of PVA layer in soluble stereoscopic texture, so that oil-soluble ink is covered in soluble stereoscopic texture.The present application provides stereoscopic texture structure for layer structure by soluble stereoscopic texture, so as to realize that stereoscopic texture can be customized, quickly and large-area is transferred to workpiece, solve the problem that the processing step of stereoscopic texture in existing water transfer printing technology is complex and leads to long time and large cost.

Description

Technical Field

[0001] The present invention relates to the technical field of water transfer printing, and in particular to a three-dimensional texture water transfer printing PVA layer, a composite layer and a preparation method thereof. Background Art

[0002] Water transfer printing technology is widely used in printing on irregular surfaces of objects, such as car steering wheels, welcome pedals, car interiors, baby carriages, toys and other items.

[0003] During use, existing water transfer paper needs to be soaked in water first, then the base layer is peeled off, and then the transfer paper with the base layer peeled off is attached to the surface of the product workpiece to be transferred; the existing transfer paper is mainly a flat structure, and does not form three-dimensional textures when it is transferred to the surface of the workpiece; if three-dimensional textures need to be formed on the workpiece, a series of processing steps are often required. Therefore, the existing technology cannot directly transfer three-dimensional textures, and the processing steps of three-dimensional textures are complicated, resulting in a long time and high cost. Summary of the Invention

[0004] The purpose of the present invention is to propose a method for preparing a three-dimensional textured water transfer PVA layer. After processing the original three-dimensional structure on the substrate, the original three-dimensional structure is laminated with PVA slurry, so that the PVA layer formed by the PVA slurry can form a soluble three-dimensional texture according to the original three-dimensional structure. The soluble three-dimensional texture can provide a three-dimensional texture structure for subsequent other films, paints or layers.

[0005] The present invention also provides a method for preparing a three-dimensional texture water transfer printing PVA composite layer, which includes applying oil-soluble ink on the side of the PVA layer with soluble three-dimensional textures, so that the oil-soluble ink covers the soluble three-dimensional textures.

[0006] The present invention also provides a three-dimensional texture water transfer printing PVA layer, which is prepared by the above-mentioned preparation method of the three-dimensional texture water transfer printing PVA layer.

[0007] The present invention also provides a three-dimensional texture water transfer printing PVA composite layer, which is prepared by the above-mentioned preparation method of the three-dimensional texture water transfer printing PVA composite layer.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A method for preparing a three-dimensional texture water transfer printing PVA layer comprises the following steps:

[0010] Step (S1): processing the original three-dimensional texture on the surface of the substrate;

[0011] Step (S2): applying PVA slurry on the surface of the substrate, and making the PVA slurry cover the original three-dimensional texture;

[0012] Step (S3): drying the substrate to form a PVA layer from the PVA slurry, and forming a soluble three-dimensional texture on one side of the original three-dimensional texture;

[0013] Step (S4): separating the substrate from the PVA layer to expose the soluble three-dimensional texture.

[0014] Preferably, in the step (S1), the substrate is a PET board, and the original three-dimensional texture is formed on the surface of the substrate by hot pressing with a pattern roller.

[0015] A method for preparing a three-dimensional texture water transfer printing PVA composite layer, comprising the above-mentioned method for preparing a three-dimensional texture water transfer printing PVA layer;

[0016] Performing step (S5) after step (S4);

[0017] The step (S5) is to apply oil-soluble ink on the side of the PVA layer on which the soluble three-dimensional texture is located, so that the oil-soluble ink covers the soluble three-dimensional texture.

[0018] Preferably, in the step (S5), the oil-soluble ink is UV ink.

[0019] Preferably, during or after step (S5), glitter powder and / or colorant are added to the oil-soluble ink.

[0020] Preferably, in the step (S1), the original three-dimensional texture is formed according to a preset pattern;

[0021] In the step (S5) or after the step (S5), after applying oil-soluble ink on one side of the PVA layer with the soluble three-dimensional texture, glitter powder and / or colorant are added along the path direction of part of the texture in the soluble three-dimensional texture.

[0022] A three-dimensional texture water transfer printing PVA layer is prepared by the above-mentioned preparation method of a three-dimensional texture water transfer printing PVA layer.

[0023] A three-dimensional texture water transfer printing PVA composite layer is prepared by the above-mentioned method for preparing a three-dimensional texture water transfer printing PVA composite layer.

[0024] The technical solution provided by the present invention can have the following beneficial effects:

[0025] This solution provides a method for preparing a three-dimensional textured water transfer PVA layer. After processing the original three-dimensional structure on the substrate, the original three-dimensional structure is laminated with PVA slurry, so that the PVA layer formed by the PVA slurry can form a soluble three-dimensional texture according to the original three-dimensional structure. The soluble three-dimensional texture can provide a three-dimensional texture structure for subsequent other films, paints or layers, thereby realizing the customizable, rapid and large-area transfer of the three-dimensional texture to the workpiece, solving the problem of complex processing steps for three-dimensional textures in existing water transfer printing technology, resulting in long time and high cost. DETAILED DESCRIPTION

[0026] The technical solution of this solution is further explained below through specific implementation methods.

[0027] A method for preparing a three-dimensional texture water transfer printing PVA layer comprises the following steps:

[0028] Step (S1): processing the original three-dimensional texture on the surface of the substrate;

[0029] An original three-dimensional pattern with a three-dimensional structure is processed on the substrate, and the original three-dimensional pattern serves as a public mold for the subsequent three-dimensional structure of the PVA layer, so that a female mold is formed on the surface of the PVA layer; wherein, the surface processing of the substrate can adopt a well-known film processing method, such as a hot pressing processing method, a roller pressing processing method, etc., as long as the three-dimensional pattern is processed.

[0030] Step (S2): applying PVA slurry on the surface of the substrate, and making the PVA slurry cover the original three-dimensional texture;

[0031] When PVA slurry is applied to the surface of the substrate, the PVA slurry is distributed along the original three-dimensional texture, forming a solid PVA layer after subsequent drying, and forming a soluble three-dimensional texture based on the original three-dimensional texture; for the soluble three-dimensional texture, a concave structure is formed corresponding to the convex structure of the PVA slurry, and a convex structure is formed corresponding to the concave structure, thereby forming a texture with a three-dimensional structure in the solid PVA layer.

[0032] Step (S3): drying the substrate to form a PVA layer from the PVA slurry, and forming a soluble three-dimensional texture on one side of the original three-dimensional texture;

[0033] After the water in the PVA slurry is removed, a solid layer structure is formed, thereby forming a soluble three-dimensional pattern. This layer structure can be directly stored or transported, and step (S4) is only performed when it is needed. Because the three-dimensional patterns of the soluble three-dimensional pattern and the three-dimensional patterns of the substrate are facing each other, the soluble three-dimensional pattern is not easily damaged during storage or transportation. The substrate also provides sufficient mechanical strength for the PVA layer.

[0034] Step (S4): separating the substrate from the PVA layer to expose the soluble three-dimensional texture.

[0035] When the substrate and the PVA layer are separated, the soluble three-dimensional texture is exposed on the outer surface. The soluble three-dimensional texture has three-dimensional textures and can be used to provide a three-dimensional texture structure for other films, paints or layers.

[0036] This solution provides a method for preparing a three-dimensional textured water transfer PVA layer. After processing the original three-dimensional structure on the substrate, the original three-dimensional structure is laminated with PVA slurry, so that the PVA layer formed by the PVA slurry can form a soluble three-dimensional texture according to the original three-dimensional structure. The soluble three-dimensional texture can provide a three-dimensional texture structure for subsequent other films, paints or layers, thereby realizing the customizable, rapid and large-area transfer of the three-dimensional texture to the workpiece, solving the problem of complex processing steps for three-dimensional textures in existing water transfer printing technology, resulting in long time and high cost.

[0037] When using this 3D texture water transfer printing PVA layer, the substrate and PVA layer can be separated. Then, ink, adhesive, coating, etc. with a certain degree of fluidity can be applied to the PVA layer and distributed along the soluble 3D texture. The liquid phase covers the soluble 3D texture. Because the soluble 3D texture uses the original 3D texture as a template, the ink, adhesive, coating, etc. will form a texture identical to the original 3D texture after curing, thus replicating the texture structure of the original 3D texture. Moreover, the original 3D texture can be designed as needed, and the thickness and pattern of the texture can be customized, so that the 3D texture structure of the ink, adhesive, coating, etc. can be customized to the desired 3D texture structure.

[0038] In one embodiment, ink, adhesive, coating, etc. can be first arranged on the workpiece, and then the side of the three-dimensional texture water transfer PVA layer with the soluble three-dimensional texture is pressed against the ink, adhesive, coating, etc. on the workpiece, and then thermally cured to form a film, and then the PVA layer is peeled off to form a three-dimensional texture structure.

[0039] In one embodiment, ink, adhesive, coating, etc. can be applied to the soluble three-dimensional texture side of the PVA layer. The PVA layer is then transferred to a water tank. The PVA layer dissolves in the water, while the ink, adhesive, and coating form an oil phase that is insoluble in water. The side of the workpiece to be decorated is then pressed against the oil phase, thereby adhering the oil phase to the workpiece. The oil phase is then solidified to form the three-dimensional texture structure. The curing method can be thermal curing or UV curing.

[0040] Preferably, in the step (S1), the substrate is a PET board, and the original three-dimensional texture is formed on the surface of the substrate by hot pressing with a pattern roller.

[0041] The substrate can be made of a known material based on specific needs, such as adhesion, functionality, and strength. In this embodiment, PET is preferably used as the substrate. PET exhibits creep resistance, fatigue resistance, abrasion resistance, good dimensional stability, low wear, and high hardness, making it highly suitable for this application. In particular, its creep resistance, fatigue resistance, and dimensional stability are excellent, and its original three-dimensional surface texture is strong. After combining with PVA, the texture remains stable, easily stored and transported, and can be reused.

[0042] A method for preparing a three-dimensional texture water transfer printing PVA composite layer, comprising the above-mentioned method for preparing a three-dimensional texture water transfer printing PVA layer;

[0043] Performing step (S5) after step (S4);

[0044] The step (S5) is to apply oil-soluble ink on the side of the PVA layer on which the soluble three-dimensional texture is located, so that the oil-soluble ink covers the soluble three-dimensional texture.

[0045] When the oil-soluble ink is applied to the PVA layer, an oil-soluble ink layer is formed, and the PVA layer and the oil-soluble ink layer are combined to form a PVA composite layer; the PVA composite layer can preferably be subjected to water transfer processing; the PVA composite layer is placed in a water tank, and the PVA composite layer is composed of a water-soluble PVA layer and an oil-soluble oil-soluble ink from bottom to top in the water, and the temperature of the water tank can be increased to below the solvent evaporation temperature and curing temperature of the oil-soluble ink. After standing for a period of time, the PVA layer will be partially or completely dissolved; the workpiece is inserted into the water tank, and the side to be decorated is pressed against the oil-soluble ink, so that the oil-soluble ink is attached to the surface of the workpiece through the tension of the water; after the oil-soluble ink is cured, a three-dimensional texture identical to the original three-dimensional texture can be formed.

[0046] Preferably, in the step (S5), the oil-soluble ink is UV ink.

[0047] This solution preferably uses UV ink, which is cured by UV curing. During curing, the surface of the UV ink is aligned with the UV lamp to complete the curing, thereby enabling UV processing of a three-dimensional structure. Combining the advantages of UV curing, this solution can achieve rapid water transfer printing of a three-dimensional structure on the surface of the workpiece, thereby further shortening the time for forming the three-dimensional structure, thereby solving the problem of long processing time for the three-dimensional structure of the existing film layer.

[0048] More preferably, during or after step (S5), glitter powder and / or colorant is added to the oil-soluble ink.

[0049] Oil-soluble ink can be added with glitter powder, which is an additive available on the market, such as metal magnesium powder, metal aluminum powder, etc.; it can further improve the aesthetics of the oil-soluble ink after curing. Combined with the three-dimensional texture structure, the three-dimensional texture water transfer PVA composite layer of this scheme can be water-transferred to produce a film layer with glitter effect and three-dimensional effect.

[0050] Further optimized, in the step (S1), the original three-dimensional texture is formed according to a preset pattern;

[0051] In the step (S5) or after the step (S5), after applying oil-soluble ink on one side of the PVA layer with the soluble three-dimensional texture, glitter powder and / or colorant are added along the path direction of part of the texture in the soluble three-dimensional texture.

[0052] The original three-dimensional texture is a texture customized by hand. Glitter powder and / or pigment can be added to the oil-soluble ink before or after curing, so that the glitter powder and / or pigment can extend along the path direction of part of the texture; especially before the oil-soluble ink is cured, the glitter powder and / or pigment is applied to the oil-soluble ink, and placed in the texture after curing, thereby further improving the decorative effect and feel of the pattern. Different glitter powder and / or pigment can be used for different texture shapes, and the color and touch are more richly reflected.

[0053] A three-dimensional texture water transfer printing PVA layer is prepared by the above-mentioned preparation method of a three-dimensional texture water transfer printing PVA layer.

[0054] A three-dimensional texture water transfer printing PVA composite layer is prepared by the above-mentioned preparation method of a three-dimensional texture water transfer printing PVA composite layer.

[0055] Example A:

[0056] A method for preparing a three-dimensional texture water transfer printing PVA layer comprises the following steps:

[0057] Step (S1): hot pressing the PET substrate to form the original three-dimensional texture;

[0058] Step (S2): applying PVA slurry on the surface of the PET substrate, and making the PVA slurry cover the original three-dimensional texture;

[0059] Step (S3): drying the PET substrate, forming a PVA layer from the PVA slurry, and forming a soluble three-dimensional texture on one side of the original three-dimensional texture;

[0060] Step (S4): separating the PET substrate from the PVA layer to expose the soluble three-dimensional texture.

[0061] Example B:

[0062] A method for preparing a three-dimensional texture water transfer printing PVA layer comprises the following steps:

[0063] Step (S1): hot pressing the PET substrate to form the original three-dimensional texture;

[0064] Step (S2): applying PVA slurry on the surface of the PET substrate, and making the PVA slurry cover the original three-dimensional texture;

[0065] Step (S3): drying the PET substrate, forming a PVA layer from the PVA slurry, and forming a soluble three-dimensional texture on one side of the original three-dimensional texture;

[0066] Step (S4): separating the PET substrate from the PVA layer to expose the soluble three-dimensional texture.

[0067] Step (S5): applying oil-soluble ink on the side of the PVA layer on which the soluble three-dimensional texture is formed, so that the oil-soluble ink covers the soluble three-dimensional texture; the oil-soluble ink is UV ink.

[0068] Step (S6): adding metallic magnesium glitter powder to the UV ink, and distributing the glitter powder on the soluble three-dimensional texture along the texture path of the original three-dimensional texture.

[0069] Example C:

[0070] A method for preparing a three-dimensional texture water transfer printing PVA layer comprises the following steps:

[0071] Step (S1): hot pressing the PET substrate to form the original three-dimensional texture;

[0072] Step (S2): applying PVA slurry on the surface of the PET substrate, and making the PVA slurry cover the original three-dimensional texture;

[0073] Step (S3): drying the PET substrate, forming a PVA layer from the PVA slurry, and forming a soluble three-dimensional texture on one side of the original three-dimensional texture;

[0074] Step (S4): separating the PET substrate from the PVA layer to expose the soluble three-dimensional texture.

[0075] Step (S5): applying oil-soluble ink on the side of the PVA layer on which the soluble three-dimensional texture is formed, so that the oil-soluble ink covers the soluble three-dimensional texture; the oil-soluble ink is UV ink.

[0076] Example D:

[0077] A method for preparing a three-dimensional texture water transfer printing PVA layer comprises the following steps:

[0078] Step (S1): original three-dimensional texture is formed on the surface of PET substrate by die hot working;

[0079] Step (S2): PVA slurry is applied on the surface of PET substrate, and the PVA slurry covers the original three-dimensional texture;

[0080] Step (S3): PET substrate is dried, PVA slurry forms PVA layer, and the PVA layer forms soluble three-dimensional texture on one side of the original three-dimensional texture;

[0081] Step (S4): PET substrate is separated from the PVA layer, and the soluble three-dimensional texture is exposed;

[0082] Step (S5): oil-soluble ink is applied on the PVA layer on one side of the soluble three-dimensional texture, and the oil-soluble ink covers the soluble three-dimensional texture; the oil-soluble ink is a heat-curable ink, the resin of the ink is a single-liquid epoxy system resin, and a curing agent is mixed in advance.

[0083] Example E:

[0084] The above examples A-D are subjected to the following steps:

[0085] (1) The PVA layer and its oil-soluble ink are transferred to the water in the sink, and are left to stand, so that the PVA layer dissolves in water;

[0086] (2) The workpiece is aligned and pressed against the oil-soluble ink on the side to be decorated, so that the workpiece adheres to the oil-soluble ink;

[0087] (3) The oil-soluble ink on the workpiece is subjected to UV curing and drying, and the oil-soluble ink is cured on the surface of the workpiece to form an ink three-dimensional texture.

[0088] The technical principles of the present scheme are described above in combination with specific examples. These descriptions are only for the purpose of explaining the principles of the present scheme, and cannot be interpreted in any way as a limitation on the scope of protection of the present scheme. Based on the explanations here, those skilled in the art can think of other specific embodiments of the present scheme without having to exert creative effort, and these embodiments will all fall within the scope of protection of the present scheme.

Claims

1. A method for preparing a three-dimensional texture water transfer printing PVA composite layer, characterized in that: The following steps are involved: Step (S1): processing the original three-dimensional texture on the surface of the substrate; Step (S2): applying PVA slurry on the surface of the substrate, and making the PVA slurry cover the original three-dimensional texture; Step (S3): drying the substrate to form a PVA layer from the PVA slurry, and forming a soluble three-dimensional texture on one side of the original three-dimensional texture; Step (S4): separating the substrate from the PVA layer to expose the soluble three-dimensional texture; Step (S5): applying oil-soluble ink on the side of the PVA layer on which the soluble three-dimensional texture is formed, so that the oil-soluble ink covers the soluble three-dimensional texture; In the step (S1), an original three-dimensional pattern is formed according to a preset pattern; In the step (S5) or after the step (S5), after applying oil-soluble ink on one side of the PVA layer with the soluble three-dimensional texture, glitter powder and / or colorant are added along the path direction of part of the texture in the soluble three-dimensional texture; in the step (S5), the oil-soluble ink is UV ink.

2. The method for preparing a three-dimensional texture water transfer printing PVA composite layer according to claim 1, characterized in that: In the step (S1), the substrate is a PET plate, and the original three-dimensional texture is formed on the surface of the substrate by hot pressing with a pattern roller.

3. A three-dimensional texture water transfer printing PVA composite layer, characterized in that: The three-dimensional texture water transfer printing PVA composite layer is prepared by the preparation method of any one of claims 1-2.