A double aluminum Mylar electronic film

Abstract

The invention discloses a double aluminum Mylar electronic film, and relates to the technical field of electronic films. One of the double aluminum Mylar electronic films comprises, from bottom to top, a first aluminum foil layer, a first composite adhesive layer, a second aluminum foil layer, a second composite adhesive layer, a transparent PET layer, and a black matte coating; the first aluminum foil layer and the second aluminum foil layer are bonded together by the first composite adhesive layer, the second aluminum foil layer and the transparent PET layer are bonded together by the second composite adhesive layer, and the black matte coating is applied on the transparent PET layer. The invention has good anti-light leakage performance, and strong protection, anti-static, and electromagnetic shielding performance.

Description

Technical Field

[0001] The invention relates to the technical field of electronic films, in particular to a double aluminum-mylar electronic film. Background Art

[0002] At present, a layer of aluminum foil Mylar electronic film is required on the back of the backlight module panels of smart phones, tablet computers, monitors, etc. In the prior art, the hierarchical structure of the aluminum foil Mylar electronic film includes a PET layer and an aluminum foil layer. This aluminum foil Mylar electronic film can protect the backlight module panel, prevent static electricity, and provide electromagnetic shielding, but it also has the following deficiencies: First, in the prior art, it is inevitable that there will be installation gaps between the structural components of the backlight module panel such as the LED light bar, back plate, light guide plate, reflective film, frame, etc. These gaps are prone to light leakage, but the aluminum foil Mylar electronic film in the prior art cannot absorb the leaked light well, and the light shielding performance is not good enough; second, the aluminum foil Mylar electronic film in the prior art is only provided with a single layer of aluminum foil, and its protection, anti-static, and electromagnetic shielding performance for the backlight module panel is not strong enough. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a double aluminum Mylar electronic film based on the above-mentioned deficiencies of the prior art. The double aluminum Mylar electronic film has good light leakage prevention performance and strong protection, anti-static and electromagnetic shielding performance.

[0004] To solve the above technical problems, the first technical solution of the present invention is: a double aluminum-Mylar electronic film, which comprises, from bottom to top, a first aluminum foil layer, a first composite adhesive layer, a second aluminum foil layer, a second composite adhesive layer, a transparent PET layer and a black matte coating; the first aluminum foil layer and the second aluminum foil layer are bonded together by the first composite adhesive layer, the second aluminum foil layer and the transparent PET layer are bonded together by the second composite adhesive layer, and the black matte coating is applied on the transparent PET layer.

[0005] Preferably, the black matte coating is composed of a primer layer, a black ink layer and a matte layer from bottom to top. The primer layer comprises a resin material and a dispersant, the black ink layer comprises carbon black, a resin material and a dispersant, and the matte layer comprises matte powder, a resin material and a dispersant.

[0006] Preferably, the thickness of the first aluminum foil layer is 6 to 30 μm, the thickness of the first composite adhesive layer is 2 to 4 μm, the thickness of the second aluminum foil layer is 6 to 30 μm, the thickness of the second composite adhesive layer is 2 to 4 μm, the thickness of the transparent PET layer is 4 to 8 μm, the thickness of the primer layer is 1 to 2 μm, the thickness of the black ink layer is 2 to 4 μm, and the thickness of the matte layer is 1.5 to 3.5 μm.

[0007] To solve the above technical problems, the second technical solution of the present invention is: a double aluminum-Mylar electronic film, which comprises, from bottom to top, a first aluminum foil layer, a first composite adhesive layer, a transparent PET layer, a second composite adhesive layer, a second aluminum foil layer and a black matte coating; the first aluminum foil layer and the transparent PET layer are bonded together by the first composite adhesive layer, the transparent PET layer and the second aluminum foil layer are bonded together by the second composite adhesive layer, and the black matte coating is applied on the second aluminum foil layer.

[0008] Preferably, the black matte coating is composed of a primer layer, a black ink layer and a matte layer from bottom to top. The primer layer comprises a resin material and a dispersant, the black ink layer comprises carbon black, a resin material and a dispersant, and the matte layer comprises matte powder, a resin material and a dispersant.

[0009] Preferably, the thickness of the first aluminum foil layer is 6 to 30 μm, the thickness of the first composite adhesive layer is 2 to 4 μm, the thickness of the transparent PET layer is 4 to 8 μm, the thickness of the second composite adhesive layer is 2 to 4 μm, the thickness of the second aluminum foil layer is 6 to 30 μm, the thickness of the primer layer is 1 to 2 μm, the thickness of the black ink layer is 2 to 4 μm, and the thickness of the matte layer is 1.5 to 3.5 μm.

[0010] The beneficial effects of the present invention are as follows: First, the upper layer of the double aluminum Mylar electronic film is a black matte coating. When the double aluminum Mylar electronic film is attached to the back of the backlight module panel, the black matte coating faces inward, and the light leaked from the backlight module panel can be absorbed by the black matte coating, achieving a full light-shielding effect, and the anti-light leakage performance is very good; second, two layers of aluminum foil are bonded and composited on one or both sides of the transparent PET layer, which has strong protection, anti-static, and electromagnetic shielding performance for the backlight module panel. Moreover, in the preferred embodiment of the present invention, the black matte coating is a primer layer, a black ink layer, and a matte layer from bottom to top. The primer layer can increase the adhesion between the black ink layer and the transparent PET layer or the aluminum foil layer, and the black ink layer and the matte layer cooperate with each other to achieve better light absorption and full light-shielding effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a hierarchical structure diagram of the double aluminum Mylar electronic film in Example 1.

[0012] Figure 2 This is a hierarchical structure diagram of the double aluminum Mylar electronic film in Example 2. DETAILED DESCRIPTION

[0013] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0014] Embodiment 1

[0015] like Figure 1As shown, the present invention is a double aluminum Mylar electronic film, which comprises, from bottom to top, a first aluminum foil layer 1, a first composite adhesive layer 2, a second aluminum foil layer 3, a second composite adhesive layer 4, a transparent PET layer 5 and a black matte coating 6; the first aluminum foil layer 1 and the second aluminum foil layer 3 are bonded together through the first composite adhesive layer 2, the second aluminum foil layer 3 and the transparent PET layer 5 are bonded together through the second composite adhesive layer 4, and the black matte coating 6 is coated on the transparent PET layer 5. The upper layer of the double aluminum Mylar electronic film is the black matte coating 6. When the double aluminum Mylar electronic film is attached to the back of the backlight module panel, the black matte coating faces inward, and the light leaked from the backlight module panel can be absorbed by the black matte coating 6, achieving a full light shielding effect, and having very good light leakage prevention performance; the first aluminum foil layer 1 and the second aluminum foil layer 3 are bonded together through the first composite adhesive layer 2, and the second aluminum foil layer 3 and the transparent PET layer 5 are bonded together through the second composite adhesive layer 4. Through the two layers of aluminum foil, it has strong protection, anti-static and electromagnetic shielding performance on the backlight module panel.

[0016] like Figure 1 As shown, the black matte coating 6 is composed of a primer layer 61, a black ink layer 62 and a matte layer 63 from bottom to top. The primer layer 61 comprises a resin material and a dispersant, the black ink layer 62 comprises a resin material, carbon black and a dispersant, and the matte layer 63 comprises a matte powder, a resin material and a dispersant. The primer layer 61 can increase the adhesion between the black ink layer and the transparent PET layer, and the cooperation between the black ink layer and the matte layer can achieve better light absorption and full light shielding effects. The black ink layer 62 is preferably formulated as follows, comprising water-soluble resin, ester solvent, water-based amino resin, dispersant, defoaming agent, leveling agent, carbon black, filler, additive, and curing agent, and their weight fractions are respectively: 23-30 parts of water-soluble resin, 5-10 parts of ester solvent, 15-25 parts of water-based amino resin, 1.2-1.8 parts of dispersant, 0.8-1.2 parts of defoaming agent, 0.8-1.2 parts of leveling agent, 20-25 parts of carbon black, 6-8 parts of filler, 6-8 parts of additive, and 8-12 parts of curing agent.

[0017] The first composite adhesive layer 2 and the second composite adhesive layer 4 preferably use a water-based adhesive, which is made of the following raw materials in parts by weight: 100 parts of deionized water, 0.8 parts of phosphate emulsifier, 55 parts of acrylate monomer mixture, 8 parts of reactive phosphate functional monomer, 0.5 parts of initiator, 0.1 parts of thickener, 0.1 parts of defoamer, and 0.03 parts of wetting agent.

[0018] like Figure 1As shown, the thickness of the first aluminum foil layer 1 is 6-30μm, preferably 6μm, 7μm, 9μm, 12μm, 15μm, 20μm or 30μm; the thickness of the first composite adhesive layer 2 is 2-4μm, preferably 3μm; the thickness of the second aluminum foil layer 3 is 6-30μm, preferably 6μm, 7μm, 9μm, 12μm, 15μm, 20μm or 30μm; the thickness of the second composite adhesive layer 4 is 2-4μm, preferably 3μm; the thickness of the transparent PET layer 5 is 4-8μm, preferably 6μm; the thickness of the primer layer 61 is 1-2μm, preferably 1.5μm; the thickness of the black ink layer 62 is 2-4μm, preferably 3μm; the thickness of the matte layer 63 is 1.5-3.5μm, preferably 2.5μm.

[0019] Embodiment 2

[0020] like Figure 2 As shown, the present invention is a double aluminum-Mylar electronic film, which comprises, from bottom to top, a first aluminum foil layer 7, a first composite adhesive layer 8, a transparent PET layer 9, a second composite adhesive layer 10, a second aluminum foil layer 11 and a black matte coating 12; the first aluminum foil layer 7 and the transparent PET layer 9 are bonded together by the first composite adhesive layer 8, the transparent PET layer 9 and the second aluminum foil layer 11 are bonded together by the second composite adhesive layer 10, and the black matte coating 12 is coated on the second aluminum foil layer 11. The upper layer of the double aluminum Mylar electronic film is a black matte coating 12. When the double aluminum Mylar electronic film is attached to the back of the backlight module panel, the black matte coating faces inward, and the light leaked from the backlight module panel can be absorbed by the black matte coating 12, achieving a full light shielding effect, and the anti-light leakage performance is very good; the first aluminum foil layer 7 and the transparent PET layer 9 are bonded together by the first composite adhesive layer 8, and the transparent PET layer 9 and the second aluminum foil layer 11 are bonded together by the second composite adhesive layer 10. Through the two layers of aluminum foil layers, it has strong protection, anti-static and electromagnetic shielding performance for the backlight module panel.

[0021] like Figure 2As shown, the black matte coating 12 is composed of a primer layer 121, a black ink layer 122 and a matte layer 123 from bottom to top. The primer layer 121 comprises a resin material and a dispersant, the black ink layer 122 comprises carbon black, a resin material and a dispersant, and the matte layer 123 comprises a matte powder, a resin material and a dispersant. The primer layer 121 can increase the adhesion between the black ink layer and the transparent PET layer, and the cooperation between the black ink layer and the matte layer can achieve better light absorption and full light shielding effects. The black ink layer 122 is preferably formulated as follows, comprising a water-soluble resin, an ester solvent, an aqueous amino resin, a dispersant, a defoaming agent, a leveling agent, carbon black, a filler, an additive, and a curing agent, and their weight fractions are respectively: 23-30 parts of water-soluble resin, 5-10 parts of ester solvent, 15-25 parts of aqueous amino resin, 1.2-1.8 parts of dispersant, 0.8-1.2 parts of defoaming agent, 0.8-1.2 parts of leveling agent, 20-25 parts of carbon black, 6-8 parts of filler, 6-8 parts of additive, and 8-12 parts of curing agent.

[0022] The first composite adhesive layer 8 and the second composite adhesive layer 10 preferably use a water-based adhesive, which is made of the following raw materials in parts by weight: 100 parts of deionized water, 0.8 parts of phosphate emulsifier, 55 parts of acrylate monomer mixture, 8 parts of reactive phosphate functional monomer, 0.5 parts of initiator, 0.1 parts of thickener, 0.1 parts of defoamer, and 0.03 parts of wetting agent.

[0023] like Figure 2 As shown, the thickness of the first aluminum foil layer 7 is 6-30 μm, preferably 6 μm, 7 μm, 9 μm, 12 μm, 15 μm, 20 μm or 30 μm; the thickness of the first composite adhesive layer 8 is 2-4 μm, preferably 3 μm; the thickness of the transparent PET layer 9 is 4-8 μm, preferably 6 μm; the thickness of the second composite adhesive layer 10 is 2-4 μm, preferably 3 μm; the thickness of the second aluminum foil layer 11 is 6-30 μm, preferably 6 μm, 7 μm, 9 μm, 12 μm, 15 μm, 20 μm or 30 μm; the thickness of the primer layer 121 is 1-2 μm, preferably 1.5 μm; the thickness of the black ink layer 122 is 2-4 μm, preferably 3 μm; the thickness of the matte layer 123 is 1.5-3.5 μm, preferably 2.5 μm.

[0024] The above description is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A double aluminum Mylar electronic film for a backlight module panel, characterized in that: From bottom to top, the first aluminum foil layer, the first composite adhesive layer, the second aluminum foil layer, the second composite adhesive layer, the transparent PET layer and the black matte coating are sequentially arranged; the first aluminum foil layer and the second aluminum foil layer are bonded together by the first composite adhesive layer, the second aluminum foil layer and the transparent PET layer are bonded together by the second composite adhesive layer, and the black matte coating is applied on the transparent PET layer; the black matte coating is sequentially arranged from bottom to top as a primer layer, a black ink layer and a matte layer; the primer layer comprises a resin material and a dispersant; the black ink layer comprises a water-soluble resin, an ester solvent, a water-based amino resin, a dispersant, a defoaming agent, a leveling agent, carbon black, a filler, an additive and a curing agent, and the weight fractions thereof are respectively: 23-30 parts of a water-soluble resin, 5- 10 parts, 15-25 parts of water-based amino resin, 1.2-1.8 parts of dispersant, 0.8-1.2 parts of defoaming agent, 0.8-1.2 parts of leveling agent, 20-25 parts of carbon black, 6-8 parts of filler, 6-8 parts of additives, and 8-12 parts of curing agent; the matte layer comprises matte powder, resin material and dispersant; the thickness of the first aluminum foil layer is 6-30μm, the thickness of the first composite adhesive layer is 2-4μm, the thickness of the second aluminum foil layer is 6-30μm, the thickness of the second composite adhesive layer is 2-4μm, the thickness of the transparent PET layer is 4-8μm, the thickness of the primer layer is 1-2μm, the thickness of the black ink layer is 2-4μm, and the thickness of the matte layer is 1.5-3.5μm.

2. The double aluminum Mylar electronic film for backlight module panel according to claim 1, characterized in that: The thickness of the first aluminum foil layer is 6μm, 7μm, 9μm, 12μm, 15μm, 20μm or 30μm, the thickness of the first composite adhesive layer is 3μm, the thickness of the second aluminum foil layer is 6μm, 7μm, 9μm, 12μm, 15μm, 20μm or 30μm, the thickness of the second composite adhesive layer is 3μm, the thickness of the transparent PET layer is 6μm, the thickness of the primer layer is 1.5μm, the thickness of the black ink layer is 3μm, and the thickness of the matte layer is 2.5μm.

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