Texture transfer film and preparation method thereof

Abstract

The invention discloses a texture transfer film and a preparation method thereof, and the texture transfer film comprises a carrier layer with a first texture on one side; the transparent hardened layer is arranged on the side, with the first texture, of the carrier layer; the bonding layer is arranged on one side, far away from the carrier layer, of the transparent hardened layer; wherein the transparent hardened layer is formed by coating transparent hardened glue on the carrier layer and curing the transparent hardened glue, the first texture is correspondingly formed on the side, facing the carrier layer and provided with the first texture, of the transparent hardened layer, the other side of the transparent hardened layer is provided with the second texture, and the bonding layer is formed by bonding glue and is in a molten state after being heated and activated. The bonding layer is activated to cover the product in the molten state, the outer side of the transparent hardened layer transferred to the product after curing is the first texture, the inner side of the transparent hardened layer is the second texture, the transparent hardened layer is in the transparent state, the second texture towards the outer side and the inner side can be displayed, and meanwhile the second texture is protected and prevented from being damaged; and the second texture is prevented from being scratched and is scratch-resistant.

Description

Technical Field

[0001] The invention relates to the technical field of transfer technology, and in particular to a texture transfer film and a preparation method thereof. Background Art

[0002] With the advancement and development of information technology, smart terminal products such as mobile phones, tablets, and laptops have been deeply integrated into the information exchange of human society. With the development of design aesthetics, major manufacturers are increasingly inclined to enhance the appearance design of their products as the key to attracting consumers. Among them, the application of optical texture is to construct textures to refract, diffuse, diffract or interfere light waves, thereby achieving a variety of rich and varied cool light and shadow effects.

[0003] The transfer process uses the non-stick properties of transfer glue and texture templates to transfer various texture effects to PC, PMMA sheets or PET materials through the transfer process, thereby producing effects including but not limited to CD texture, brushed texture, sun texture, batch pattern, woven texture, sandblasted texture, leather texture, wood grain, 3D surface, fantasy color effect, bulge effect, cat's eye effect, matte surface, glossy surface, and high-gloss surface. It is widely used in decorative sheets, shells, windows, lenses, LOGO, etc., giving the product appearance a colorful 2D, 3D appearance texture pattern effect, and is no longer limited to traditional printing and spraying texture effects.

[0004] Taking the back cover of a mobile phone as an example, whether it is glass or composite material, in order to achieve gorgeous appearance effects and texture such as 3D, frosted, and starry sky gradient, it is necessary to add a texture layer design. Manufacturers and consumers have shifted their attention more to the appearance of the product. Texture design and transfer technology have broad application prospects, but the existing technology still has problems that limit its development.

[0005] The existing transfer film has a carrier layer, a first colloid layer, a second colloid layer and an adhesive layer. The adhesive layer is bonded to the surface of the product by vacuuming and heating. After cooling, the transfer film is torn off, and the adhesive layer and the second colloid layer are transferred to the surface of the product. Among them, the first colloid layer has a texture, and the texture is imprinted on the first colloid layer through a texture template. Then, the second colloid layer is laid flat on the first colloid layer. After cooling, the second colloid layer forms a texture corresponding to the texture on the first colloid layer. We found that the transferred texture is easily scratched by friction during daily use of the product, thereby destroying the texture and causing the problem of scratch resistance. Summary of the invention

[0006] The purpose of the present invention is to provide a texture transfer film and a preparation method thereof, so as to overcome the problem that the texture is easily scratched and is not scratch-resistant.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A texture transfer film, comprising:

[0009] a carrier layer having a first texture on one side;

[0010] A transparent hardened layer is disposed on a side of the carrier layer having the first texture;

[0011] A bonding layer is arranged on a side of the transparent hardening layer away from the carrier layer;

[0012] Among them, the transparent hardened layer is formed by coating transparent hardening glue on the carrier layer and curing it, so the transparent hardened layer forms a first texture corresponding to the side of the carrier layer with the first texture, and the other side of the transparent hardened layer has a second texture. The bonding layer is formed by the bonding glue and is in a molten state after heating and activation.

[0013] Preferably, the carrier layer is a film, a primer layer is arranged on one side of the carrier layer, and the first texture is arranged on the primer layer.

[0014] Preferably, a first bridging layer is arranged on the side of the transparent hardened layer away from the carrier layer, the second texture is formed on the first bridging layer, a second bridging layer is arranged on the side of the first bridging layer away from the transparent hardened layer, and an electroplating layer is arranged on the side of the second bridging layer away from the first bridging layer.

[0015] Preferably, a printing layer is arranged on the side of the electroplating layer away from the transparent hardened layer, a cover bottom layer is arranged on the side of the printing layer away from the electroplating layer, and a subsequent layer is arranged on the side of the cover bottom layer away from the printing layer.

[0016] A method for preparing a texture transfer film, the preparation of the texture transfer film comprising the following steps:

[0017] preparing an original membrane as a carrier layer;

[0018] A coating machine is used to coat the carrier layer to form a primer layer;

[0019] A layer of UV texture glue with release force is applied on the base coating by a coating machine, and a pre-set optical texture template is used to bond and wrap it on a roller, and after pressing, it is cured by ultraviolet irradiation to have a first texture attached to one side of the base coating;

[0020] Using a coating machine to coat the transparent hardening adhesive on the first texture;

[0021] The first bridge layer is laid flat on the transparent hardened layer, a layer of UV texture glue is coated on the first bridge layer by a coating machine, and a preset optical texture template is used to bond and wrap it on a roller, and after pressing, it is cured by ultraviolet irradiation to have a second texture attached to one side of the first bridge layer, so that the texture pattern on the optical texture template is fully displayed on the first bridge layer;

[0022] Laying the second bridge layer on the second texture, and then forming an electroplating layer on the second bridge layer by evaporation or sputtering process;

[0023] forming a printed layer on the electroplating layer by a printing process;

[0024] forming a cover layer on the printed layer by a printing process;

[0025] The adhesive layer is formed by coating on the cover base layer using a coating machine.

[0026] A texture transfer film transfer method, using the texture transfer film, comprises the following steps:

[0027] Select the product to be transferred and match the surface of the product to be transferred to the texture transfer film;

[0028] The texture transfer film is covered on the surface of the product to be transferred, and the adhesive layer is activated and molten by vacuum heating. The adhesive layer is bonded to the surface of the product to be transferred. After cooling, the adhesive layer solidifies and firmly bonds to the product. The texture transfer film is torn off, and the transparent hardened layer containing the first texture and the second texture to the contact layer is transferred to the product.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention activates the adhesive layer so that it covers the product in a molten state. The transparent hardened layer transferred to the product after solidification has a first texture on the outside and a second texture on the inside. The transparent hardened layer is transparent and can display the second texture on the inside and outside. At the same time, it protects the second texture from being damaged, prevents scratches on the second texture and is scratch-resistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structural cross-section between the various component layers of a texture transfer film proposed by the present invention.

[0032] In the figure: 1. Carrier layer; 2. First texture; 3. Transparent hardening layer; 4. Adhesive layer; 5. Second texture; 6. Primer layer; 7. First bridging layer; 8. Second bridging layer; 9. Electroplating layer; 10. Printing layer; 11. Cover bottom layer. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] See attached Figure 1 , a texture transfer film, comprising:

[0035] A carrier layer 1 having a first texture 2 on one side;

[0036] A transparent hardened layer 3 is disposed on a side of the carrier layer 1 having the first texture 2;

[0037] The next layer 4 is arranged on the side of the transparent hardened layer 3 away from the carrier layer 1;

[0038] Among them, the transparent hardened layer 3 is formed by coating transparent hardened glue on the carrier layer 1 and curing it, so the transparent hardened layer 3 has a first texture 2 on the side facing the carrier layer 1, and the other side of the transparent hardened layer 3 has a second texture 5. The bonding layer 4 is formed by the bonding glue and is in a molten state after heating and activation.

[0039] Through the above technical solution, the adhesive layer 4 is activated so that it covers the product in a molten state. The transparent hardened layer 3 transferred to the product after solidification has the first texture 2 on the outside and the second texture 5 on the inside. The transparent hardened layer 3 is transparent and can display the second texture 5 on the outside and inside. At the same time, it protects the second texture 5 from being damaged, prevents scratches on the second texture 5 and is scratch-resistant.

[0040] The carrier layer 1 is a thin film with a thickness ranging from 100 to 150 μm. A primer layer 6 is arranged on one side of the carrier layer 1 . The first texture 2 is arranged on the primer layer 6 . The thickness of the primer layer 6 is ranging from 3 to 4 μm.

[0041] A first bridging layer 7 is arranged on a side of the transparent hardened layer 3 away from the carrier layer 1, the second texture 5 is formed on the first bridging layer 7, a second bridging layer 8 is arranged on a side of the first bridging layer 7 away from the transparent hardened layer 3, and an electroplating layer 9 is arranged on a side of the second bridging layer 8 away from the first bridging layer 7, wherein the first bridging layer 7 and the second bridging layer 8 serve to isolate the transparent hardened layer 3, the second texture 5 and the electroplating layer 9, prevent chemical reactions between adjacent layers and improve interlayer compatibility.

[0042] A printing layer 10 is disposed on the side of the electroplating layer 9 away from the transparent hardened layer 3 , a cover bottom layer 11 is disposed on the side of the printing layer 10 away from the electroplating layer 9 , and the next layer 4 is disposed on the side of the cover bottom layer 11 away from the printing layer 10 .

[0043] Texture transfer film preparation method:

[0044] Preparing an original film as a carrier layer 1;

[0045] A coating machine is used to coat the carrier layer 1 to form a primer layer 6;

[0046] A layer of UV texture glue with release force is applied to the base coating layer 6 by a coating machine, and a pre-set optical texture template is used to bond and wrap it on a roller, and after pressing, it is cured by ultraviolet irradiation to have a first texture 2 attached to one side of the base coating layer 6;

[0047] A coating machine is used to coat the transparent hardened adhesive on the first texture 2;

[0048] The first bridge layer 7 is laid flat on the transparent hardened layer 3, a layer of UV texture glue is coated on the first bridge layer 7 by a coating machine, and a preset optical texture template is used to bond and wrap it on a roller, and then it is pressed and cured by ultraviolet irradiation to have a second texture 5 attached to one side of the first bridge layer 7, so that the texture pattern on the optical texture template is fully displayed on the first bridge layer 7;

[0049] Lay the second bridge layer 8 on the second texture 5, and then form an electroplating layer 9 on the second bridge layer 8 by evaporation or sputtering process;

[0050] Forming a printed layer 10 on the electroplated layer 9 by a printing process;

[0051] Forming a cover layer 11 on the printed layer 10 by a printing process;

[0052] The adhesive layer 4 is formed by coating on the cover base layer 11 using a coater.

[0053] Texture transfer film transfer method:

[0054] Select the product to be transferred and match the surface of the product to be transferred to the texture transfer film;

[0055] The texture transfer film is covered on the surface of the product to be transferred, and the adhesive layer 4 is activated and molten by vacuum heating. The adhesive layer 4 is bonded to the surface of the product to be transferred. After cooling, the adhesive layer 4 solidifies and firmly bonds to the product. The texture transfer film is torn off, and the transparent hardened layer 3 containing the first texture 2 and the second texture 5 is transferred to the contact layer onto the product.

[0056] It should be noted that:

[0057] The function of the electroplating layer 9 is to change the reflection and transmission characteristics of the material surface, increase the requirements of light reflection, beam splitting, color separation, light filtering, polarization, etc., and form a gorgeous reflective effect;

[0058] The function of the printing layer 10 is to enrich the color of the texture transfer film;

[0059] The function of the cover bottom layer 11 is to set off the color and texture of the texture transfer film to make it more obvious;

[0060] The adhesive is made of hot melt adhesive, and the temperature range for activating the adhesive layer 4 is 60-130°C. The adhesive is thermally cured, and an infrared absorber can be added to the hot melt adhesive to absorb heat faster and cure faster. Compared with the conventional ultraviolet curing method, the thermal curing used in this application can make the pattern more delicate and high in pixel density, ignoring the obstacle of the material on the texture transfer film to ultraviolet penetration, and curing is faster and better.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A texture transfer film, characterized in that: include: A carrier layer (1) having a first texture (2) on one side; A transparent hardened layer (3) is arranged on a side of the carrier layer (1) having the first texture (2); A bonding layer (4) is arranged on a side of the transparent hardened layer (3) away from the carrier layer (1); The transparent hardened layer (3) is formed by coating a transparent hardened adhesive on the carrier layer (1) and curing the coating. The first texture (2) is formed on the side of the transparent hardened layer (3) facing the carrier layer (1) and having the first texture (2). The other side of the transparent hardened layer (3) has a second texture (5). The adhesive layer (4) is formed by the adhesive and is in a molten state after being heated and activated.

2. A texture transfer film according to claim 1, characterized in that: The carrier layer (1) is a film, a primer layer (6) is arranged on one side of the carrier layer (1), and the first texture (2) is arranged on the primer layer (6).

3. The texture transfer film according to claim 1, characterized in that: A first bridging layer (7) is arranged on a side of the transparent hardened layer (3) away from the carrier layer (1), a second texture (5) is formed on the first bridging layer (7), a second bridging layer (8) is arranged on a side of the first bridging layer (7) away from the transparent hardened layer (3), and an electroplating layer (9) is arranged on a side of the second bridging layer (8) away from the first bridging layer (7).

4. The texture transfer film according to claim 1, characterized in that: A printing layer (10) is arranged on the side of the electroplating layer (9) away from the transparent hardened layer (3), a cover bottom layer (11) is arranged on the side of the printing layer (10) away from the electroplating layer (9), and a subsequent layer (4) is arranged on the side of the cover bottom layer (11) away from the printing layer (10).

5. A method for preparing a texture transfer film, comprising preparing the texture transfer film according to any one of claims 1 to 4, characterized in that: The following steps are involved: Preparing an original film as a carrier layer (1); Using a coating machine to coat the carrier layer (1) to form a primer layer (6); A layer of UV texture glue with release force is applied to the base coating (6) by a coating machine, and a pre-set optical texture template is used to bond and wrap it on a roller, and after pressing, it is irradiated with ultraviolet rays to be cured to have a first texture (2) attached to one side of the base coating (6); Using a coating machine to coat the transparent hardened adhesive on the first texture (2); The first bridge layer (7) is laid flat on the transparent hardened layer (3), a layer of UV texture glue is coated on the first bridge layer (7) by a coating machine, a pre-set optical texture template is used to bond and wrap it on a roller, and after pressing, it is cured by ultraviolet irradiation to have a second texture (5) attached to one side of the first bridge layer (7), so that the texture pattern on the optical texture template is fully displayed on the first bridge layer (7); Laying the second bridge layer (8) on the second texture (5), and then forming an electroplating layer (9) on the second bridge layer (8) by evaporation or sputtering process; Forming a printing layer (10) on the electroplating layer (9) by a printing process; Forming a cover bottom layer (11) on the printing layer (10) by a printing process; A coating machine is used to coat the cover bottom layer (11) to form an adhesive layer (4).

6. A texture transfer film transfer method, using the texture transfer film according to any one of claims 1 to 4, characterized in that: The following steps are involved: Select the product to be transferred and match the surface of the product to be transferred to the texture transfer film; The texture transfer film is covered on the surface of the product to be transferred, and the adhesive layer (4) is activated and molten by vacuum heating. The adhesive layer (4) is bonded to the surface of the product to be transferred. After cooling, the adhesive layer (4) solidifies and is firmly bonded to the product. The texture transfer film is torn off, and the transparent hardened layer (3) containing the first texture (2) and the second texture (5) is transferred to the contact layer onto the product.

Images