A composite film with clear texture and high quality

Abstract

The present invention discloses a composite film with clear texture and high quality, belonging to the technical field of composite films. The composite film comprises a texture layer, a protective coating, a printing coating, an adhesive layer and a first substrate layer which are stacked in sequence from top to bottom, the protective coating is arranged on the side of the texture layer facing the first substrate layer, the printing coating is arranged on the side of the protective coating facing the first substrate layer, and the texture layer is connected to the first substrate layer through the adhesive layer. The composite film with clear texture and high quality can realize multi-texture alignment printing when the texture layer is combined with printing, so that the same shoe upper has multiple different textures and multiple different colors.

Description

Technical Field

[0001] The invention relates to the technical field of composite films, and in particular to a composite film with clear texture and high quality. Background Art

[0002] In existing footwear manufacturing, upper materials must not only meet the requirements of appearance design, but also have certain physical properties such as strength, flexibility and wear resistance to meet the requirements of uppers in daily use. Although traditional upper materials such as leather, fabric or synthetic materials perform well in some aspects, they still have problems with easy deformation, strength and flexibility.

[0003] In order to solve the strength problem, composite materials are widely used in shoe upper design to improve the overall performance of the shoe upper, and the surface texture can achieve a more beautiful effect. However, in the traditional shoe upper composite film manufacturing process, the decorative texture of the material is usually achieved through surface printing. This process involves printing the design pattern on the surface of the composite film, and the printing of complex and irregular textures requires manual operation. This will increase the complexity of production on the one hand, and on the other hand, the handmade texture effect is uneven and lacks refinement. In addition, during the manufacturing process, a protective oil layer is applied on top of the printed pattern. Although it can enhance the visual effect, it will also cover the previously handmade texture, resulting in an insignificant texture effect and failure to achieve the expected visual and tactile experience. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a composite film with bright printing colors, clear texture, good texture and the printed part can be attached to the bottom and peeled off, which has a clear texture and high texture.

[0005] The technical solution of the present invention is: a composite film with clear texture and high quality, comprising a texture layer, a protective coating, a printed coating, an adhesive layer and a first substrate layer stacked in sequence from top to bottom, the protective coating being arranged on a side of the texture layer facing the first substrate layer, the printed coating being arranged on a side of the protective coating facing the first substrate layer, and the texture layer being connected to the first substrate layer through the adhesive layer.

[0006] Furthermore, an anti-deformation support structure layer is provided on a side of the first substrate layer away from the texture layer, and the anti-deformation support structure layer includes a hot melt adhesive layer and a second substrate layer. The hot melt adhesive layer is provided on a side of the first substrate layer away from the texture layer, and the second substrate layer is connected to the first substrate layer through the hot melt adhesive layer.

[0007] Furthermore, the texture layer is polypropylene texture paper, and the texture layer is provided with different textures in different areas and is printed with multiple colors.

[0008] Furthermore, the thickness of the texture layer is ≥0.1 mm.

[0009] Furthermore, the protective coating is specifically a varnish layer.

[0010] Furthermore, the second substrate layer is made of polypropylene textured paper.

[0011] Furthermore, the thickness of the second substrate layer is ≥0.3 mm.

[0012] Furthermore, the first substrate layer is made of thermoplastic polyurethane elastomer.

[0013] A preparation process of a composite film with clear texture and high quality, comprising the following steps:

[0014] S1. The texture layer is provided with different patterns in different areas according to specific requirements, and different colors are printed in different areas of the texture layer by register printing to obtain the texture layer;

[0015] S2. Prepare a protective coating: adopt a coating process to control the coating temperature at 90° C. and the thickness at 0.06 mm, apply a varnish material on the surface of the texture layer to form a protective coating, and transfer the texture on the texture layer to the protective coating;

[0016] S3, preparing a printed coating: using an inner printing method and controlling the temperature at 40°C-60°C, printing ink on one side of the texture layer with a protective layer to form a printed coating, thereby obtaining a printed coating;

[0017] S4, preparing an adhesive layer: coating an adhesive on the side of the texture layer where the functional composite layer is formed to form an adhesive layer;

[0018] S5. Preparation of composite film: The texture layer is connected and bonded to the first substrate layer through an adhesive layer. The temperature of the first substrate layer is 180° C., the tension is 0.18N, and the curing temperature is controlled to be 60° C. The curing time is 48 hours to form a composite film.

[0019] Furthermore, the method further comprises the following steps: forming a hot melt adhesive layer by uniformly coating the hot melt adhesive on the surface of the other side of the first substrate layer, and connecting and bonding the first substrate layer to the second substrate layer through the hot melt adhesive layer.

[0020] The beneficial technical effects of the present invention are:

[0021] 1. The texture layer is provided with different textures in multiple areas and is printed in register, which can realize multi-texture register printing. Compared with the prior art of first cutting, then printing different colors, and then manually splicing multiple texture papers with different patterns, it achieves the effect of pre-processing and belongs to integrated printing, with better design sense, and realizes the effect that different textures on the same upper can have different colors, reducing the steps of the entire shoe production process and improving production efficiency.

[0022] 2. When the composite film needs to be normally pasted on the mesh, the composite film is cut into a specified shape, the first substrate layer is adhered to the mesh by an adhesive, and then the texture layer is peeled off to form a product.

[0023] 3. The printing coating also adopts the inside printing method, which is applied and printed in a whole roll manner. It is a purely mechanized operation and saves more time than manual printing.

[0024] 4. When it is necessary to stick to the sole, separate the first base material layer and make contact with the sole through the adhesive layer to achieve the sticking effect. Therefore, the product can be directly stuck to the sole, which has better adhesion with the sole and saves work time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the composite film with clear texture and high quality.

[0026] 1. Texture layer; 2. Protective coating; 3. Printing coating; 4. Adhesive layer; 5. First substrate layer; 6. Hot melt adhesive layer; 7. Second substrate layer. DETAILED DESCRIPTION

[0027] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0028] Please refer to Figure 1As shown, the composite film with clear texture and high quality of this embodiment includes a texture layer 1 made of polypropylene texture paper with a thickness of ≥0.1mm, a protective coating 2 which is a varnish coating, a printed coating 3, an adhesive layer 4 and a first substrate layer 5 made of thermoplastic polyurethane elastomer are formed on the side of the printed coating 3 facing the first substrate layer 5 by coating, the protective coating 2 is arranged on the side of the texture layer 1 facing the first substrate layer 5 by coating varnish, and the protective coating 2 contains laser powder, fluorescent powder, etc., the printed coating 3 is arranged on the side of the protective coating 2 facing the first substrate layer 5 by printing ink using the inner printing method, and the coating and printing are performed in a whole roll by the inner printing method, which is a purely mechanized operation and saves time than manual printing, and the texture layer 1 is connected to the first substrate layer 5 through the adhesive layer 4.

[0029] In this embodiment, when the composite film needs to be normally pasted on the mesh, the composite film is cut into a specified shape, the first substrate layer 5 is bonded to the mesh through an adhesive, and then the texture layer 1 is peeled off to form a product. When it needs to be pasted on the sole, the first substrate layer 5 is separated and directly adhered to the sole through the adhesive layer 4.

[0030] Furthermore, an anti-deformation support structure layer is provided on the side of the first substrate layer 5 away from the texture layer 1, and the anti-deformation support structure layer includes a hot-melt adhesive layer 6 and a second substrate layer 7 made of polypropylene texture paper and with a thickness ≥0.3 mm. The hot-melt adhesive layer 6 is provided on the side of the first substrate layer 5 away from the texture layer 1, and the second substrate layer 7 is connected to the first substrate layer 5 through the hot-melt adhesive layer 6. When installing it on the upper, the composite film is cut to a specified shape, and then the second substrate layer 7 is torn off and installed and pasted on the upper mesh through the hot-melt adhesive layer 6. Similarly, the texture layer 1 needs to be separated to complete the use and installation requirements.

[0031] In this embodiment, when the composite film needs to be normally pasted on the mesh, the composite film is cut into a specified shape, the second substrate layer 7 is torn off and bonded to the mesh through the hot melt adhesive layer 6, and then the texture layer 1 is peeled off to form a product. When it needs to be pasted on the sole, the second substrate layer 7 is torn off and directly adhered to the sole through the hot melt adhesive layer 6.

[0032] Furthermore, the material of the first substrate layer 5 and the second substrate layer 7 is at least one of PET, PP, PC, PVC, PE, OPP, TPU, PU, ​​TPE, EVA, TPEE, PA, PPS, PI, ABS, PMMA, latex, rubber, silicone rubber, metal film, paper, artificial leather, artificial leather base cloth, animal skin, plant skin, fiber film, non-woven fabric, and woven fabric.

[0033] In this embodiment, when the material of the first substrate layer 5 and the second substrate layer 7 is TPU material, the TPU material itself has good wear resistance and good tensile properties, and the tear strength of the TPU film is much better than that of ordinary rubber. TPU is one of the best choices for polymer materials, and it can maintain good bending resistance in different environments.

[0034] Furthermore, the protective coating 2 is a varnish coating made of a resin such as polyether or polyurethane resin. The varnish coating not only meets the peeling force test but also has good flex and bending resistance.

[0035] Furthermore, the texture layer 1 is a polypropylene texture paper, and the texture layer 1 is provided with different textures in different areas and is printed with a variety of colors, which can meet the needs of multiple textures and complex patterns of different colors.

[0036] A preparation process of a composite film with clear texture and high quality, comprising the following steps:

[0037] S1. The texture layer 1 is provided with different patterns in different areas according to specific needs, and different colors are printed in different areas of the texture layer 1 by register printing to obtain the texture layer 1.

[0038] In this step, by directly setting different textures in different areas of the texture layer 1 and adopting register printing to print different colors in different areas, it is avoided that the texture paper with different textures is first cut to form a specified shape, and then different colors are printed and then the different texture papers are manually plated one by one to form the texture layer 1 in the prior art. This step adopts register printing and reduces labor through pre-processing, thereby improving processing efficiency.

[0039] In the prior art, the slices are sliced ​​and then spliced ​​and docked to adjust the light transmittance at different positions. In the step, by adjusting the ink color, the multi-line registration printing process is used to print at different positions of the texture layer 1 to achieve different light transmittance effects at different positions after printing.

[0040] S2, preparing protective coating 2: using a coating process to control the coating temperature at 90°C and the thickness at 0.06 mm, coating the surface of the texture layer 1 with varnish material to form protective coating 2, and transferring the texture on the texture layer 1 to the protective coating 2.

[0041] S3, preparing printed coating 3: using an inner printing method and controlling the temperature at 40°C-60°C, printing ink on the side of the texture layer 1 with a protective layer to form a printed coating 3, thereby obtaining a printed coating 3.

[0042] In this step, the printing coating 3 is obtained by printing ink using the back printing process to achieve the effect of wear resistance and anti-fouling. The existing process generally adopts the surface printing process to avoid the unclear pattern caused by friction and pollution when the composite film is used later.

[0043] And because the material of the protective coating 2 is polyurethane resin, the material has excellent stain resistance, is easy to clean, has strong oil resistance, extremely high wear resistance and UV resistance, and has high color stability.

[0044] S4, preparing adhesive layer 4: coating adhesive on the side of texture layer 1 where the functional composite layer is formed to form adhesive layer 4.

[0045] S5. Prepare a composite film: The texture layer 1 is connected and bonded to the first substrate layer 5 through the adhesive layer 4. The temperature of the first substrate layer 5 is 180° C., the tension is 0.18N, and the curing temperature is controlled to be 60° C. The curing time is 48 hours to form a composite film.

[0046] Furthermore, the method further includes the following steps: forming a hot melt adhesive layer 6 by uniformly coating the hot melt adhesive on the surface of the other side of the first substrate layer 5 , and connecting and bonding the first substrate layer 5 to the second substrate layer 7 via the hot melt adhesive layer 6 .

[0047] The composite membrane prepared by the above content was tested, and the test data are as follows:

[0048]

[0049]

[0050] When it is necessary to stick to the sole, it is only necessary to separate the first substrate layer 5 and directly stick it to the sole through the adhesive layer 4, that is, the adhesive layer 4 is in contact with the sole to achieve the sticking effect. Therefore, the product can be directly stuck to the sole, the adhesion with the sole is better, and labor hours are saved.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A composite film with clear texture and high quality, characterized by: The invention comprises a texture layer (1), a protective coating (2), a printed coating (3), an adhesive layer (4) and a first substrate layer (5) which are stacked in sequence from top to bottom, wherein the protective coating (2) is arranged on a side of the texture layer (1) facing the first substrate layer (5), the printed coating (3) is arranged on a side of the protective coating (2) facing the first substrate layer (5), the texture layer (1) is connected to the first substrate layer (5) via the adhesive layer (4), the texture layer (1) is polypropylene texture paper, and the texture layer (1) is provided with different textures in different areas and has multiple colors printed in position.

2. A composite film with clear texture and high quality as claimed in claim 1, characterized in that: An anti-deformation support structure layer is also provided on a side of the first substrate layer (5) away from the texture layer (1), and the anti-deformation support structure layer comprises a hot melt adhesive layer (6) and a second substrate layer (7), the hot melt adhesive layer (6) is provided on a side of the first substrate layer (5) away from the texture layer (1), and the second substrate layer (7) is connected to the first substrate layer (5) via the hot melt adhesive layer (6).

3. A composite film with clear texture and high quality as claimed in claim 2, characterized in that: The thickness of the texture layer (1) is ≥ 0.1 mm.

4. A composite film with clear texture and high quality as claimed in claim 2, characterized in that: The protective coating (2) is specifically a varnish layer.

5. The composite film with clear texture and high quality as claimed in claim 2, characterized in that: The material of the second substrate layer (7) is polypropylene textured paper.

6. A composite film with clear texture and high quality as claimed in claim 3, characterized in that: The thickness of the second substrate layer (7) is ≥0.3 mm.

7. The composite film with clear texture and high quality as claimed in claim 1, characterized in that: The first substrate layer (5) is made of thermoplastic polyurethane elastomer.

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