A decorative high-light diffusion film and preparation method thereof

Abstract

The invention discloses a decorative high-light diffusion film and a preparation method thereof, which comprises a transparent PET substrate layer, a first diffusion layer is coated on one side of the transparent PET substrate layer, and an adhesive layer is coated on the surface of the first diffusion layer; an adhesive layer, the surface of the adhesive layer is connected and fixed to one side of an anti-scratch layer; a transparent PET substrate layer, a second diffusion layer is coated on the other side of the transparent PET substrate layer, and side splicing grooves are provided on both sides of the transparent PET substrate layer. The decorative high-light diffusion film and the preparation method thereof, by optimizing the structure of the traditional industrial diffusion film, greatly improve the light radiation area of ​​the diffusion film, can perform large-area high-intensity light radiation outdoors and under other conditions with strong light sources, ensure the decorative effect of the decorative high-light diffusion film, and through the protection of the surface anti-scratch film, can ensure that the outer diffusion layer will not be damaged during installation and use, ensure that the decorative high-light diffusion film as a whole can work stably for a long time, and ensure the use effect.

Description

Technical Field

[0001] The present invention relates to the technical field of decorative high-light diffusion films, in particular to a decorative high-light diffusion film and a preparation method thereof. Background Art

[0002] Diffusion film is an industrial film, generally used in the backlight source part of LCD modules. In the backlight structure, it mainly plays the role of correcting the diffusion angle, which will increase the light radiation area. However, with the continuous use of diffusion film, decorative high-light diffusion film has emerged. It is used in home decoration and public decoration fields to play a role of lighting and decoration.

[0003] Existing decorative high-light diffusion films generally follow the structure of industrial diffusion films and are composed only of a substrate and a diffusion coating. During home and public decoration construction and daily use, it is found that their structural strength is insufficient, the diffusion coating on the surface is easily damaged, and the increase in light radiation area is limited. In outdoor conditions and other conditions with strong light sources, the use effect is poor. It is necessary to design a decorative high-light diffusion film and a preparation method thereof to address the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a decorative high-light diffusion film and a preparation method thereof, so as to solve at least one technical problem existing in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A decorative high-light diffusion film and a preparation method thereof, comprising:

[0007] a transparent PET substrate layer, wherein one side of the transparent PET substrate layer is coated with a first diffusion layer, and a surface of the first diffusion layer is coated with an adhesive layer;

[0008] an adhesive layer, a surface of the adhesive layer being connected and fixed to one side of the anti-scratch layer;

[0009] A transparent PET substrate layer, wherein the other side of the transparent PET substrate layer is coated with a second diffusion layer.

[0010] Preferably, side splicing grooves are symmetrically opened on both sides of the transparent PET substrate layer, and the inner walls of the side splicing grooves are configured to be inwardly concave arcs.

[0011] Preferably, the thickness of the first diffusion layer is smaller than that of the second diffusion layer, and the sum of the thicknesses of the first diffusion layer and the second diffusion layer is smaller than 1 / 2 of the thickness of the transparent PET substrate layer.

[0012] Preferably, the thickness of the anti-scratch layer is greater than 1 / 2 of the thickness of the first diffusion layer, and the material of the anti-scratch layer is high-transmittance PPSU.

[0013] Preferably, the first diffusion layer includes a first coating base and first diffusion particles, and the first diffusion particles are densely dispersed in the first coating base.

[0014] Preferably, the second diffusion layer includes a second coating base and second diffusion particles, and the second diffusion particles are densely dispersed in the second coating base.

[0015] Another technical solution provided by the present invention is a method for preparing a decorative high-light diffusion film, wherein the steps of the method for preparing the decorative high-light diffusion film are as follows:

[0016] (1) Preparation of coating substrate

[0017] S1. Raw material mixing

[0018] a. According to weight ratio, take 15-35 parts of acrylic resin monomer, 55-75 parts of acrylic resin oligomer, 1-5 parts of adhesive, and 1-5 parts of photoinitiator;

[0019] b. Add the raw materials into the stirring tank in the order of acrylic resin monomer, acrylic resin oligomer, adhesive and photoinitiator. In the first 5 minutes after the raw materials are added, increase the speed of the stirring tank evenly from 0 to 800 r / min. After the raw materials are completely added, increase the speed to ≥1200 r / min within 10 minutes and maintain the speed. Continue stirring to obtain the coating base slurry.

[0020] S2: Coating substrate preparation

[0021] The coating base slurry prepared in S1 is continuously stirred at a speed of ≤600 r / min and kept warm at 20-30° C. to obtain the coating base slurry required for production, which is set aside.

[0022] (2) Preparation of the first diffusion layer coating and the second diffusion layer coating

[0023] S1. Select two diffusion particles with different diameters, and the diameter ratio of the two diffusion particles is 1:1.5-2.5;

[0024] S2. Transfer the prepared coating base slurry to two new stirring tanks respectively, continue stirring at a speed of ≤600r / min, and add two diffusion particles with different diameters to the two new stirring tanks respectively. After the diffusion particles are added, increase the speed of the stirring structure of the stirring tank to ≥1000r / min, and maintain the temperature at 30-35°C. Continue stirring for 30-50min to obtain the first diffusion layer coating and the second diffusion layer coating.

[0025] (3) Preparation of decorative high-light diffusion film

[0026] S1: Select a transparent PET substrate of appropriate size and grind arc-shaped grooves on both sides of the transparent PET substrate to facilitate the application of adhesive during splicing;

[0027] S2: Evenly apply the first diffusion layer coating on one side of the transparent PET substrate. Then, with the surface coated with the first diffusion layer facing upward, place the transparent PET substrate in a UV curing device for irradiation curing. After the first diffusion layer coating is completely cured, remove the transparent PET substrate, apply adhesive on the cured surface of the first diffusion layer, and attach a scratch-resistant film made of high-transparency PPSU to the adhesive. Wait for the adhesive to cure.

[0028] S3: Then, the other side of the transparent PET substrate is turned upward, and the second diffusion layer coating is evenly coated on the upward surface of the transparent PET substrate. After the coating is completed, the transparent PET substrate is placed in the UV curing equipment again for irradiation curing. After the second diffusion layer coating is completely cured, the transparent PET substrate is taken out to obtain a finished decorative high-gloss diffusion film.

[0029] Preferably, the diffusion particles are spherical highly transparent silica particles, and the diameter of the diffusion particles is 2 mm to 8 mm.

[0030] Preferably, the mass ratio of the coating base slurry to the diffusion particles is 10:1-1.5.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] By optimizing the structure of traditional industrial diffusion films, the light radiation area of ​​the diffusion films is greatly increased. It can carry out large-area high-intensity light radiation outdoors and under other conditions with strong light sources, ensuring the decorative effect of the decorative high-light diffusion film. In addition, through the protection of the surface anti-scratch film, the outer diffusion layer can be protected from damage during installation and use, ensuring that the decorative high-light diffusion film as a whole can work stably for a long time and ensure the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the front cross-sectional structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the cross-sectional structure of the first diffusion layer of the present invention.

[0035] Figure 3 Schematic diagram of the cross-sectional structure of the second diffusion layer of the present invention.

[0036] In the figure: 1. Transparent PET substrate layer; 2. First diffusion layer; 201. First coating base; 202. First diffusion particles; 3. Adhesive layer; 4. Anti-scratch layer; 5. Second diffusion layer; 501. Second coating base; 502. Second diffusion particles; 6. Side splicing groove. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0038] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] See also Figure 1-3 , an embodiment provided by the present invention:

[0042] A decorative high-light diffusion film and a preparation method thereof, comprising:

[0043] A transparent PET substrate layer 1, one side of the transparent PET substrate layer 1 is coated with a first diffusion layer 2, and a surface of the first diffusion layer 2 is coated with an adhesive layer 3;

[0044] Adhesive layer 3, the surface of the adhesive layer 3 is connected and fixed to one side of the anti-scratch layer 4;

[0045] A transparent PET substrate layer 1 is coated with a second diffusion layer 5 on the other side of the transparent PET substrate layer 1. Side splicing grooves 6 are symmetrically opened on both sides of the transparent PET substrate layer 1, and the inner wall of the side splicing groove 6 is set to be an inwardly concave arc.

[0046] In one embodiment, the thickness of the first diffusion layer 2 is less than the thickness of the second diffusion layer 5, and the sum of the thicknesses of the first diffusion layer 2 and the second diffusion layer 5 is less than 1 / 2 of the thickness of the transparent PET substrate layer 1. By providing two diffusion layers of different thicknesses, the overall light radiation area of ​​the decorative high-light diffusion film is effectively increased.

[0047] In one of the preferred embodiments, the thickness of the anti-scratch layer 4 is greater than 1 / 2 of the thickness of the first diffusion layer 2, and the material of the anti-scratch layer 4 is high-transmittance PPSU. The above structural design can effectively protect the first diffusion layer 2 and prevent the first diffusion layer 2 from being damaged, and at the same time will not affect the propagation of light.

[0048] In one embodiment, the first diffusion layer 2 includes a first coating base 201 and first diffusion particles 202 . The first diffusion particles 202 are densely dispersed in the first coating base 201 . The above structural design utilizes the first diffusion particles 202 to effectively disperse light.

[0049] In one preferred embodiment, the second diffusion layer 5 includes a second coating base 501 and second diffusion particles 502 . The second diffusion particles 502 are densely dispersed in the second coating base 501 . The above structural design utilizes the second diffusion particles 502 to effectively disperse light.

[0050] A method for preparing a decorative high-light diffusion film, the method comprising the following steps:

[0051] (1) Preparation of coating substrate

[0052] S1. Raw material mixing

[0053] a. According to weight ratio, take 15-35 parts of acrylic resin monomer, 55-75 parts of acrylic resin oligomer, 1-5 parts of adhesive, and 1-5 parts of photoinitiator;

[0054] b. Add the raw materials into the stirring tank in the order of acrylic resin monomer, acrylic resin oligomer, adhesive and photoinitiator. In the first 5 minutes after the raw materials are added, increase the speed of the stirring tank evenly from 0 to 800 r / min. After the raw materials are completely added, increase the speed to ≥1200 r / min within 10 minutes and maintain the speed. Continue stirring to obtain the coating base slurry.

[0055] S2: Coating substrate preparation

[0056] The coating base slurry prepared in S1 is continuously stirred at a speed of ≤600 r / min and kept warm at 20-30° C. to obtain the coating base slurry required for production, which is set aside.

[0057] (2) Preparation of the first diffusion layer coating and the second diffusion layer coating

[0058] S1. Select two diffusion particles with different diameters, and the diameter ratio of the two diffusion particles is 1:1.5-2.5;

[0059] S2. Transfer the prepared coating base slurry to two new stirring tanks respectively, continue stirring at a speed of ≤600r / min, and add two diffusion particles with different diameters to the two new stirring tanks respectively. After the diffusion particles are added, increase the speed of the stirring structure of the stirring tank to ≥1000r / min, and maintain the temperature at 30-35°C. Continue stirring for 30-50min to obtain the first diffusion layer coating and the second diffusion layer coating.

[0060] (3) Preparation of decorative high-light diffusion film

[0061] S1: Select a transparent PET substrate of appropriate size and grind arc-shaped grooves on both sides of the transparent PET substrate to facilitate the application of adhesive during splicing;

[0062] S2: Evenly apply the first diffusion layer coating on one side of the transparent PET substrate. Then, with the surface coated with the first diffusion layer facing upward, place the transparent PET substrate in a UV curing device for irradiation curing. After the first diffusion layer coating is completely cured, remove the transparent PET substrate, apply adhesive on the cured surface of the first diffusion layer, and attach a scratch-resistant film made of high-transparency PPSU to the adhesive. Wait for the adhesive to cure.

[0063] S3: Then, the other side of the transparent PET substrate is turned upward, and the second diffusion layer coating is evenly coated on the upward surface of the transparent PET substrate. After the coating is completed, the transparent PET substrate is placed in the UV curing equipment again for irradiation curing. After the second diffusion layer coating is completely cured, the transparent PET substrate is taken out to obtain a finished decorative high-gloss diffusion film.

[0064] In one embodiment, the diffusion particles are spherical highly transparent silica particles, and the diameter of the diffusion particles is 2mm-8mm. The above structural design ensures the light dispersion effect.

[0065] In one preferred embodiment, the mass ratio of the coating base slurry to the diffusion particles is 10:1-1.5. The above structural design ensures that the number of highly transparent silica particles is sufficient to ensure the light radiation area.

[0066] The above is only an embodiment of the present invention, and common sense such as the specific structure and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A method for preparing a decorative high-light diffusion film, which is applied to a decorative high-light diffusion film, wherein the decorative high-light diffusion film comprises: A transparent PET substrate layer (1), wherein one side of the transparent PET substrate layer (1) is coated with a first diffusion layer (2), and the surface of the first diffusion layer (2) is coated with an adhesive layer (3); An adhesive layer (3), wherein a surface of the adhesive layer (3) is connected and fixed to one side of the anti-scratch layer (4); A transparent PET substrate layer (1), wherein the other side of the transparent PET substrate layer (1) is coated with a second diffusion layer (5); It is characterized in that: the steps of the preparation method include:

1. Preparation of coating substrate S1. Raw material mixing a. According to weight ratio, take 15-35 parts of acrylic resin monomer, 55-75 parts of acrylic resin oligomer, 1-5 parts of adhesive, and 1-5 parts of photoinitiator; b. Add the raw materials into the stirring kettle in the order of acrylic resin monomer, acrylic resin oligomer, adhesive and photoinitiator. In the first 5 minutes after the raw materials are added, increase the speed of the stirring kettle evenly from 0 to 800 r / min. After the raw materials are completely added, increase the speed to ≥ 1200 r / min within 10 minutes and maintain the speed, and continue stirring to obtain the coating base slurry; S2: Coating substrate preparation The coating substrate slurry prepared in S1 is continuously stirred at a speed of ≤600 r / min and kept warm at 20-30° C. to obtain the coating substrate slurry required for production, which is set aside; (II) Preparation of the first diffusion layer coating and the second diffusion layer coating S1. Select two diffusion particles with different diameters, and the diameter ratio of the two diffusion particles is 1:1.5-2.5; S2. The prepared coating substrate slurry is transferred to two new stirring tanks respectively, and continuously stirred at a speed of ≤600r / min, and two diffusion particles with different diameters are added to the two new stirring tanks respectively. After the diffusion particles are added, the speed of the stirring structure of the stirring tank is increased to ≥1000r / min, and the temperature is maintained at 30-35°C, and stirring is continued for 30-50min to obtain a first diffusion layer coating and a second diffusion layer coating; (III) Preparation of decorative high light diffusion film S1: Select a transparent PET substrate of appropriate size and grind arc-shaped grooves on both sides of the transparent PET substrate to facilitate the application of adhesive during splicing; S2: The first diffusion layer coating is evenly coated on one side of the transparent PET substrate, and then the surface coated with the first diffusion layer coating is placed upward, and the transparent PET substrate is placed in a UV curing device for irradiation curing. After the first diffusion layer coating is completely cured, the transparent PET substrate is taken out, and an adhesive is coated on the surface of the cured first diffusion layer, and an anti-scratch film made of high-transmittance PPSU is attached to the adhesive, and the adhesive is cured; S3: Then, the other side of the transparent PET substrate is turned upward, and the second diffusion layer coating is evenly coated on the upward surface of the transparent PET substrate. After the coating is completed, the transparent PET substrate is placed in the UV curing equipment again for irradiation curing. After the second diffusion layer coating is completely cured, the transparent PET substrate is taken out to obtain a finished decorative high-gloss diffusion film.

2. The method for preparing a decorative high light diffusion film according to claim 1, characterized in that: Side splicing grooves (6) are symmetrically provided on both sides of the transparent PET substrate layer (1), and the inner wall of the side splicing groove (6) is arranged in an inwardly concave arc shape.

3. The method for preparing a decorative high light diffusion film according to claim 1, characterized in that: The thickness of the first diffusion layer (2) is smaller than the thickness of the second diffusion layer (5), and the sum of the thicknesses of the first diffusion layer (2) and the second diffusion layer (5) is smaller than 1 / 2 of the thickness of the transparent PET substrate layer (1).

4. The method for preparing a decorative high light diffusion film according to claim 1, characterized in that: The thickness of the anti-scratch layer (4) is greater than 1 / 2 of the thickness of the first diffusion layer (2), and the material of the anti-scratch layer (4) is high-transmittance PPSU.

5. The method for preparing a decorative high light diffusion film according to claim 1, characterized in that: The first diffusion layer (2) comprises a first coating substrate (201) and first diffusion particles (202), and the first diffusion particles (202) are densely dispersed in the first coating substrate (201).

6. The method for preparing a decorative high light diffusion film according to claim 1, characterized in that: The second diffusion layer (5) comprises a second coating substrate (501) and second diffusion particles (502), and the second diffusion particles (502) are densely dispersed in the second coating substrate (501).

7. The method for preparing a decorative high light diffusion film according to claim 1, characterized in that: The diffusion particles are spherical highly transparent silicon dioxide particles, and the diameter of the diffusion particles is 2mm-8mm.

8. The method for preparing a decorative high light diffusion film according to claim 1, characterized in that: The mass ratio of the coating substrate slurry to the diffusion particles is 10:1-1.5.

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