High-transmittance plastic packaging film

Abstract

The utility model discloses a high-light-transmission plastic packaging film which has excellent gloss and light transmission, high weather resistance and good wear-resistant and scratch-resistant effects. Comprising a base material, a first diffusion layer, an anti-reflection layer, an anti-ultraviolet layer, an anti-oxidation layer, a damp-proof layer, a wear-resistant layer and a scratch-resistant layer are sequentially arranged on the upper surface of the base material, a second diffusion layer and a transparent adhesive layer are sequentially arranged on the lower surface of the base material, and the base material is made of a high-transparency PET sheet.

Description

Technical Field

[0001] The utility model relates to a plastic sealing film technology, in particular to a high light-transmittance plastic sealing film. Background Art

[0002] Plastic film, also known as heat-mounting film, card protection film, laminating film, and laminating film, is a good helper for laminating photos and documents in life. Heating is used. Different thicknesses require different plastic sealing temperatures, which are related to the pressure and speed of the plastic sealing machine and the thickness of the plastic sealing film. The advantages of plastic sealing film are: moisture-proof, dust-proof, anti-fading, protection of documents and photos, and long-term use. Before use, cut out the appropriate size according to the size of the paper to be plasticized. Generally, there are various standard sizes of plastic wrapping paper on the market, such as A4, A6 and other sizes. Generally, the area of ​​the plastic wrapping paper needs to be larger than the paper to be laminated. Sandwich the paper to be laminated flatly between the two layers of plastic wrapping paper and use Heating. After heating, the paper to be laminated is sealed by the laminating paper (because the two opposite surfaces of the laminating paper have glue, they will stick together after heating), making it waterproof to a certain extent and extending its service life. When laminating the data page, you need to separate the laminating film first, sandwich the data page in the middle, so that the glue-coated surface of the laminating film faces the data page, and then close the laminating film and feed it into the laminating machine from front to back to heat it. After the pressure is applied, the material comes out from the rear outlet, thus achieving purpose.

[0003] For example, a Chinese patent with publication number CN212199098U discloses a high-transparency plastic film, including a base layer, a first nano-titanium dioxide film layer is arranged on the upper surface of the base layer, a moisture-proof layer is arranged on the upper surface of the first nano-titanium dioxide film layer, a metal foil laser layer is arranged on the upper surface of the moisture-proof layer, a color printing layer is arranged on the upper surface of the metal foil laser layer, a polyimide layer is arranged on the upper surface of the color printing layer, a semi-crystalline polyester is arranged between the base layer and the first nano-titanium dioxide film layer, and a second nano-titanium dioxide film layer is arranged at both ends of the plastic film body; the polyester imide layer has higher heat resistance, flexibility and transparency, the first nano-titanium dioxide film layer makes the plastic film have excellent gloss and transparency, greatly improves the light transmittance, and the semi-crystalline polyester makes the plastic film have higher light reflection ability and transparency.

[0004] In actual applications, plastic products such as plastic films tend to turn yellow under light. At the same time, the surface of the plastic film is easily worn and scratched, which will affect the transparency and light transmittance of the plastic film. Therefore, the light transmittance and transparency of the plastic film disclosed in this patent are still not ideal during use. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects of the existing technical problems and provide a high light-transmitting plastic sealing film, which has excellent gloss and light transmittance, high weather resistance and good wear and scratch resistance.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a high-transmittance plastic sealing film, comprising a substrate, the upper surface of the substrate is sequentially provided with a first diffusion layer, a transmittance-enhancing layer, an anti-ultraviolet layer, an antioxidant layer, a moisture-proof layer, a wear-resistant layer and a scratch-resistant layer, the lower surface of the substrate is sequentially provided with a second diffusion layer and a transparent adhesive layer, and the substrate is made of a highly transparent PET sheet.

[0007] Furthermore, the first diffusion layer and the second diffusion layer are both made of polyacrylic resin, and scattering particles are arranged in the first diffusion layer and the second diffusion layer, and the scattering particles are spherical particles made of silicon dioxide.

[0008] Furthermore, the anti-reflection layer is a nano titanium dioxide film covering the upper surface of the first diffusion layer.

[0009] Furthermore, the anti-ultraviolet layer is an LGF light-guiding film, and a UV-P ultraviolet absorber is added to the LGF light-guiding film.

[0010] Furthermore, the anti-oxidation layer is a high-density polyethylene film, and the thickness of the anti-oxidation layer is 1 / 10-1 / 8 of the thickness of the substrate.

[0011] Furthermore, the moisture-proof layer is made of a highly transparent PE moisture-proof film.

[0012] Furthermore, the wear-resistant layer is an acrylic or silicone coating applied on the surface of the moisture-proof layer.

[0013] Furthermore, the scratch-resistant layer is a transparent polyester film.

[0014] Furthermore, the transparent adhesive layer is made of OCA adhesive.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] 1. The first diffusion layer and the second diffusion layer are respectively arranged on the upper and lower sides of the substrate. Scattering particles are arranged in the first diffusion layer and the second diffusion layer. The refractive index of the scattering particles is different from that of the first diffusion layer and the second diffusion layer. When the light passes through the first diffusion layer and the second diffusion layer, it will continuously pass through two media with different refractive indices. Therefore, the light will undergo many refractions, reflections and scattering phenomena, thereby correcting the light diffusion angle, so that the light becomes a light with a larger area, better uniformity and stable chromaticity;

[0017] 2. Setting the anti-reflection layer can reduce reflected light, enhance refracted light, and thus improve the light transmittance, increase the light transmittance of the entire plastic film, and make the plastic film have excellent gloss and light transmittance;

[0018] 3. Setting up an anti-ultraviolet layer can absorb ultraviolet rays well, turning them into harmless energy and releasing or consuming them, which helps to delay the yellowing of plastic products and block the loss of physical properties, and improve weather resistance;

[0019] 4. Setting a wear-resistant layer and a scratch-resistant layer can increase the service life of the plastic film and avoid affecting the light transmission effect of the plastic film due to scratches or wear;

[0020] 5. The transparent adhesive layer uses OCA glue, which is colorless and transparent, with a light transmittance of more than 90% and good bonding strength. It ensures the bonding strength without affecting the light transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the high light transmittance plastic sealing film of the utility model.

[0022] Reference numerals: 1, substrate; 2, first diffusion layer; 3, anti-reflection layer; 4, anti-ultraviolet layer;

[0023] 5. Anti-oxidation layer; 6. Moisture-proof layer; 7. Wear-resistant layer; 8. Scratch-resistant layer; 9. Second diffusion layer;

[0024] 10. Transparent adhesive layer; 11. Scattering particles. DETAILED DESCRIPTION

[0025] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0026] In this embodiment, a high-transmittance plastic film is provided, including a substrate 1, the upper surface of the substrate 1 is provided with a first diffusion layer 2, a transmittance-enhancing layer 3, an anti-ultraviolet layer 4, an anti-oxidation layer 5, a moisture-proof layer 6, a wear-resistant layer 7 and a scratch-resistant layer 8 in sequence, and the lower surface of the substrate 1 is provided with a second diffusion layer 9 and a transparent adhesive layer 10 in sequence.

[0027] In this embodiment, the substrate 1 is made of a highly transparent PET sheet, which can ensure the basic transparency of the plastic film.

[0028] In this embodiment, the first diffusion layer 2 and the second diffusion layer 9 are both made of polyacrylic resin, and scattering particles 11 are arranged in the first diffusion layer 2 and the second diffusion layer 9. The scattering particles 11 are spherical particles made of silicon dioxide. The refractive index of the scattering particles 11 is different from that of the first diffusion layer 2 and the second diffusion layer 9, so that when the light passes through the first diffusion layer 2 and the second diffusion layer 9, it will continuously pass through two media with different refractive indices, so the light will undergo many refractions, reflections and scattering phenomena, thereby correcting the light diffusion angle, so that the light becomes a light with a larger area, better uniformity and stable chromaticity.

[0029] In this embodiment, the anti-reflection layer 3 is a nano titanium dioxide film covering the upper surface of the first diffusion layer 2. The titanium dioxide film can reduce reflected light, enhance refracted light, and thereby improve the light transmittance, increase the light transmittance of the entire plastic film, and make the plastic film have excellent gloss and light transmittance. At the same time, the titanium dioxide film has good durability, which helps to minimize the fading and cracking that may occur in the plastic film under light.

[0030] In this embodiment, the anti-ultraviolet layer 4 is an LGF light-guiding film, which is a transparent film with high refractive index and light transmittance, and a UV-P ultraviolet absorber is added to the LGF light-guiding film. Because plastic materials will produce auto-oxidation reactions under sunlight and fluorescence due to the action of ultraviolet rays, the polymer will degrade and deteriorate, making the appearance and mechanical properties worse. Therefore, adding a UV-P ultraviolet absorber can absorb ultraviolet rays well, turning them into harmless energy and releasing or consuming them. At the same time, the UV-P ultraviolet absorber has good stability, does not decompose, and does not change color, which helps to delay the yellowing of plastic products and block the loss of physical properties, thereby improving weather resistance.

[0031] In this embodiment, the anti-oxidation layer 5 is a high-density polyethylene film, and the thickness of the anti-oxidation layer 5 is 1 / 10-1 / 8 of the thickness of the substrate 1 .

[0032] In this embodiment, the moisture-proof layer 6 is made of a highly transparent PE moisture-proof film, so that the plastic film has good moisture-proof performance.

[0033] In this embodiment, the wear-resistant layer 7 is an acrylic or silicone coating applied on the surface of the moisture-proof layer 6 .

[0034] In this embodiment, the scratch-resistant layer 8 is a transparent polyester film.

[0035] In this embodiment, the transparent adhesive layer 10 is made of OCA adhesive, which is colorless and transparent, has a light transmittance of more than 90%, and has good bonding strength. While ensuring the bonding strength, it will not affect the light transmission effect.

[0036] The utility model provides a high light-transmittance plastic film, which has the advantages that: a first diffusion layer 2 and a second diffusion layer 9 are respectively arranged on the upper and lower sides of a substrate 1, scattering particles 11 are arranged in the first diffusion layer 2 and the second diffusion layer 9, and the scattering particles 11 are spherical particles made of silicon dioxide. The refractive index of the scattering particles 11 is different from that of the first diffusion layer 2 and the second diffusion layer 9, so that when the light passes through the first diffusion layer 2 and the second diffusion layer 9, it will continuously pass through two media with different refractive indices, so that the light will undergo many refractions, reflections and scattering phenomena, thereby correcting the light diffusion angle, so that the light becomes a light with a larger area, better uniformity and stable chromaticity; the anti-reflection layer 3 is arranged to reduce reflected light and enhance refracted light , thereby improving the light transmittance, increasing the light transmittance of the entire plastic film, so that the plastic film has excellent gloss and light transmittance; an anti-ultraviolet layer 4 is provided, and the anti-ultraviolet layer 4 is an LGF light-guiding film, and UV-P ultraviolet absorber is added to the LGF light-guiding film, which can absorb ultraviolet rays well and turn them into harmless energy to be released or consumed, which helps to delay the yellowing of plastic products and block the loss of physical properties, and improve weather resistance; a wear-resistant layer 7 and a scratch-resistant layer 8 are provided, which can increase the service life of the plastic film and avoid affecting the light transmittance of the plastic film due to scratches or wear; the transparent adhesive layer 10 adopts OCA adhesive, which is colorless and transparent, has a light transmittance of more than 90%, and has good bonding strength. While ensuring the bonding strength, it will not affect the light transmittance effect.

[0037] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high light transmittance plastic film, characterized in that: The invention comprises a substrate (1), wherein the upper surface of the substrate (1) is provided with a first diffusion layer (2), an anti-reflection layer (3), an anti-ultraviolet layer (4), an anti-oxidation layer (5), a moisture-proof layer (6), an abrasion-resistant layer (7) and a scratch-resistant layer (8) in sequence, and the lower surface of the substrate (1) is provided with a second diffusion layer (9) and a transparent adhesive layer (10) in sequence, and the substrate (1) is made of a highly transparent PET sheet.

2. The high light transmittance plastic film according to claim 1, characterized in that: The first diffusion layer (2) and the second diffusion layer (9) are both made of polyacrylic resin, and scattering particles (11) are arranged in the first diffusion layer (2) and the second diffusion layer (9), and the scattering particles (11) are spherical particles made of silicon dioxide.

3. The high light transmittance plastic film according to claim 1, characterized in that: The anti-reflection layer (3) is a nano titanium dioxide film covering the upper surface of the first diffusion layer (2).

4. The high light transmittance plastic film according to claim 1, characterized in that: The anti-ultraviolet layer (4) is an LGF light-guiding film, and a UV-P ultraviolet absorber is added to the LGF light-guiding film.

5. The high light transmittance plastic film according to claim 1, characterized in that: The anti-oxidation layer (5) is a high-density polyethylene film, and the thickness of the anti-oxidation layer (5) is 1 / 10 to 1 / 8 of the thickness of the substrate (1).

6. The high light transmittance plastic film according to claim 1, characterized in that: The moisture-proof layer (6) is made of a highly transparent PE moisture-proof film.

7. The high light transmittance plastic film according to claim 1, characterized in that: The wear-resistant layer (7) is an acrylic or silicone coating applied on the surface of the moisture-proof layer (6).

8. The high light transmittance plastic film according to claim 1, characterized in that: The scratch-resistant layer (8) is a transparent polyester film.

9. The high light transmittance plastic film according to claim 1, characterized in that: The transparent adhesive layer (10) is made of OCA adhesive.

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