Semi-transparent film and glass rear cover

Abstract

The utility model relates to the technical field of PET (Polyethylene Terephthalate) films, in particular to a semitransparent film and a glass rear cover, which comprise a printing layer, a semitransparent black base material layer and an optical adhesive layer which are sequentially adhered from top to bottom, and the optical adhesive layer is an OCA (Optical Clear Adhesive) nano optical coating; the semi-transparent black substrate layer can be smoothly endowed with a semi-transparent effect, the realization difficulty of the semi-transparent effect is reduced, the yield is improved, and batch processing of the semi-transparent film is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of PET film, especially to a translucent film and glass back cover. BACKGROUND

[0002] In traditional printing, the translucent ink makes the printed matter more attractive in vision through its unique transparency and gloss. For example, in packaging design, the transparent ink can make the commodity outer package more high-grade and exquisite, and improve the market attraction of the product.

[0003] To achieve the ideal translucent effect, the traditional printing translucent ink needs to meet the following conditions:

[0004] 1. Accurate ink transparency control, which requires high proportion of ink formula and pigment, and coagulation material, and the particle size and distribution of pigment will affect the transparency.

[0005] 2. Temperature, the appropriate temperature range is generally 20-25 degrees Celsius. If the temperature is too high, the drying speed of the translucent oil will be too fast, which may cause the ink to dry and settle on the screen before it is completely transferred, affecting the continuity and pattern integrity of the printing; if the temperature is too low, the fluidity of the ink will be poor, which will make it difficult for the ink to be transferred to the printing material through the screen hole.

[0006] 3. Humidity, the environmental humidity is usually kept at 40%-60% for the best. If the humidity is too high, the water vapor in the air will easily make the translucent oil absorb too much water, which may change the composition and performance of the ink, such as reducing the viscosity of the ink, making the ink transfer performance worse; and it may also cause the printed matter to dry slowly and easily appear the phenomenon of bleeding. If the humidity is too low, the possibility of static electricity will increase, which will easily attract dust and other impurities, which will affect the quality of the printed matter after mixing into the ink.

[0007] 4. Ventilation, good ventilation helps the evaporation of solvents in the ink, speeds up the drying speed, at the same time can discharge the harmful gas produced in the printing process, improve the working environment, and can reduce the concentration of solvent volatilization in the air, reduce the risk of fire or explosion and other safety accidents.

[0008] 5. Glass surface cleanliness, the environment needs to be kept as clean as possible, because dust, fibers and other impurities mixed into the translucent oil will form defects on the printed matter, reducing the quality of the printed matter.

[0009] 6. Printing accuracy, because the translucent effect is sensitive to the thickness of the ink layer, etc., the accurate positioning of the pattern and the accurate control of the ink amount during printing have high requirements.

[0010] Therefore, the traditional printing translucent ink needs to meet accurate ink transparency control, temperature, humidity, ventilation, glass surface cleanliness and printing accuracy at the same time, so that it is difficult to realize ideal translucent effect by using the traditional printing translucent ink, the conditions to be met are harsh, the yield is low, and batch processing of the translucent film is not facilitated. Utility model content

[0011] The utility model provides a kind of translucent film and glass back cover, can give translucent black substrate layer translucent effect smoothly, reduce the difficulty of realization of translucent effect, improve yield, facilitate batch processing of the translucent film.

[0012] To solve the above technical problems, the utility model adopts the following technical solutions:

[0013] The utility model provides a kind of translucent film, including the printing layer, translucent black substrate layer and optical adhesive layer that are sequentially laminated, and the optical adhesive layer is OCA nano optical coating.

[0014] Wherein, the translucent black substrate layer is PET translucent black film.

[0015] Wherein, the translucent black substrate layer is PET translucent black explosion-proof film.

[0016] Wherein, the initial adhesion of the optical adhesive layer is greater than or equal to 5N / 25mm.

[0017] Wherein, the tensile strength of the translucent black substrate layer is greater than or equal to 150MPa.

[0018] Wherein, the light transmittance of the translucent black substrate layer is 20-95%.

[0019] Wherein, the thickness of the optical adhesive layer is 15-30um.

[0020] The utility model also provides a kind of glass back cover for translucent film, including glass body, and the glass body is laminated on the upper surface of printing layer.

[0021] Wherein, the glass body is half black glass.

[0022] The utility model has the advantages of:

[0023] Translucent black substrate layer can be given translucent effect smoothly, reduce the difficulty of realization of translucent effect, improve yield, facilitate batch processing of the translucent film. DRAWINGS

[0024] Figure 1 It is the structure section view of the utility model translucent film.

[0025] Figure 2 Figure 2 is a structural cross-sectional view of the glass back cover.

[0026] 100, glass body;

[0027] 1, printing layer; 2, translucent black substrate layer; 3, optical adhesive layer. DETAILED DESCRIPTION

[0028] For the convenience of those skilled in the art, the present application will be further described below in conjunction with the embodiments and the drawings. The specific embodiments of the present application will be described below, and it should be noted that, in the specific description of these embodiments, the present specification cannot describe all the features of the actual embodiments in detail for the sake of brevity and conciseness.

[0029] Reference Figures 1 to 2 As shown in the figure, the utility model provides a kind of translucent film, including printing layer 1, translucent black substrate layer 2 and optical adhesive layer 3 sequentially attached from top to bottom, the optical adhesive layer 3 is OCA nano optical coating, the translucent black substrate layer 2 is PET translucent black film, the light transmittance of the translucent black substrate layer 2 is 20-95%, compared with the process efficiency of traditional glass printing translucent ink is increased by 3 times, ink consumption is reduced by 60%, can successfully impart translucent effect to translucent black substrate layer 2, reduce the difficulty of realizing translucent effect, improve yield, benefit to meet the batch processing of translucent film, by translucent black substrate layer 2 preset half black effect;Specifically, the thickness of optical adhesive layer 3 is 15-30um, initial adhesion is greater than or equal to 5N / 25mm, haze is less than 1%, the light transmittance of translucent black substrate layer 2 is greater than 92%, its nanoscale molecular structure can realize zero bubble attachment, can realize close attachment, eliminate bubble, to reduce light scattering, zero bubble attachment makes interface more uniform, avoid local light spot or distortion caused by bubble, improve display effect and visual experience.

[0030] Reference Figure 1 In the embodiment, the translucent black substrate layer 2 is PET translucent black explosion-proof film, which is beneficial to prevent explosion or impact and reduce the risk of fragmentation of the translucent film, thereby reducing safety hazards.

[0031] In the embodiment, the tensile strength of the translucent black substrate layer 2 is greater than or equal to 150MPa, which is beneficial to resist external force impact and can be applied to glass with high stress.

[0032] Reference Figure 1 , 2The utility model discloses still provide a glass back cover for translucent film, including glass body 100, glass body 100 is attached to the upper surface of printing layer 1, the initial adhesion of optical adhesive layer 3 5N / 25mm, when translucent black base material layer 2 is broken by external force impact, optical adhesive layer 3 smoothly adheres glass fragment, prevents fragment splashing hurt.

[0033] Reference Figure 2 In the embodiment, the glass body 100 is semi-transparent black glass, which gives the glass body 100 a semi-transparent black effect, and the surface resistance of the semi-transparent black base material layer 2 is greater than 10^12 Ω / sq, avoiding signal shielding problems caused by traditional metal plating layers, and realizing the black semi-transparent effect without oxidation discoloration and electromagnetic shielding phenomena.

[0034] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as above, it is not intended to limit the utility model. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the scope of the utility model technical solution. Any simple modification, equivalent change and modification of the above embodiment within the scope of the utility model technical solution are all within the scope of the utility model technical solution.

Claims

1. A translucent film, characterized by, It comprises a printing layer (1), a semi-transparent black base material layer (2) and an optical glue layer (3) which are sequentially adhered from top to bottom, and the optical glue layer (3) is an OCA nano optical coating.

2. The translucent film according to claim 1, characterized by The semi-transparent black base material layer (2) is a PET semi-transparent black film.

3. The translucent film according to claim 2, wherein The semi-transparent black base material layer (2) is a PET semi-transparent black explosion-proof film.

4. The translucent film according to claim 1, wherein The initial adhesion of the optical glue layer (3) is greater than or equal to 5 N / 25 mm.

5. The translucent film according to claim 1, wherein The tensile strength of the semi-transparent black base material layer (2) is greater than or equal to 150 MPa.

6. The translucent film according to claim 1, wherein The light transmittance of the semi-transparent black base material layer (2) is 20-95%.

7. The translucent film according to claim 1, wherein The thickness of the optical glue layer (3) is 15-30 um.

8. A glass back cover for the translucent film according to any one of claims 1 to 7, characterized in that, It comprises a glass body (100) which is adhered to the upper surface of the printing layer (1).

9. The glass back cover of claim 8, wherein, The glass body (100) is a semi-transparent black glass.

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