Dustproof AB glue optical film

Abstract

The utility model discloses a dustproof AB adhesive optical film which comprises a PET base material, a dust-absorbing exhaust silica gel layer, a dustproof antistatic layer and an OCA optical adhesive layer, the OCA optical adhesive layer is arranged on the first surface of the PET base material through roller coating, and the dustproof antistatic layer is arranged on the second surface of the PET base material through micro-concave roller kiss coating. The dust absorbing and exhausting silica gel layer is extruded and coated on one surface, deviating from the second surface, of the dustproof and antistatic layer through a slit, and the thickness of the PET base material is 50-100 microns; the dustproof anti-static layer is used for repelling dust on the dust absorbing and exhausting silica gel layer and the peripheral side of the dust absorbing and exhausting silica gel layer so as to at least reduce the amount of dust absorbed and wrapped by the dust absorbing and exhausting silica gel layer before film pasting, and the thickness of the dustproof anti-static layer is 1-3 microns; the dust absorbing and exhausting silica gel layer is used for absorbing and wrapping dust on the screen, and the thickness of the dust absorbing and exhausting silica gel layer is 55-65 microns; the OCA optical adhesive layer is arranged to be an outer side dustproof protective layer, and the thickness of the OCA optical adhesive layer is 200-250 microns.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical film technical field especially relates to dustproof AB glue optical film. BACKGROUND

[0002] With the increase of the number of smart phone users and the enhancement of people's awareness of protecting the screen of the mobile phone, the demand for mobile phone film is also higher and higher, and the requirement for the film is also higher and higher, in the related art, the thorough cleaning before the film is an urgent problem to be solved and difficult to overcome, for example: accidentally getting dust will directly affect the film result, which may cause bubbles after the film is pasted, or even cause the whole protective film to be scrapped; in the related art, the protective film cannot be effectively prevented from dust during the film pasting process, and the dust cannot be cleaned after entering the film pasting process and the silica gel layer of the protective film is damaged, so that the film is scrapped and cannot be used.

[0003] At present, there is no effective solution to the problem that the mobile phone protective film cannot be effectively prevented from dust and the silica gel layer of the protective film is damaged due to dust entering during the film pasting process in the related art. INVENTION CONTENTS

[0004] Therefore, it is necessary to provide a dustproof AB glue optical film to at least solve the problem that the mobile phone protective film cannot be effectively prevented from dust and the silica gel layer of the protective film is damaged due to dust entering during the film pasting process in the related art.

[0005] In a first aspect, the embodiments of the present application provide a technical solution as follows: a dustproof AB glue optical film for a glass toughened film, comprising a PET substrate, a dust-adsorbing and air-exhausting silica gel layer, a dustproof and antistatic layer and an OCA optical adhesive layer, the OCA optical adhesive layer is arranged on the first surface of the PET substrate by roll coating, the dustproof and antistatic layer is arranged on the second surface of the PET substrate by micro-concave roller kiss coating, and the dust-adsorbing and air-exhausting silica gel layer is arranged on one side of the dustproof and antistatic layer away from the second surface by slit extrusion coating, wherein the thickness of the PET substrate is 50-100 μm; the dustproof and antistatic layer is used to repel the dust placed on the dust-adsorbing and air-exhausting silica gel layer and its periphery, so as to at least reduce the amount of dust adsorbed and wrapped by the dust-adsorbing and air-exhausting silica gel layer before the film is pasted, wherein the thickness of the dustproof and antistatic layer is 1-3 μm; the dust-adsorbing and air-exhausting silica gel layer is used to adsorb and wrap the dust placed on the screen, wherein the thickness of the dust-adsorbing and air-exhausting silica gel layer is 55-65 μm; the OCA optical adhesive layer is arranged as an outer dustproof protective layer, and the thickness of the OCA optical adhesive layer is 200-250 μm.

[0006] In the dustproof AB glue optical film, a dustproof antistatic layer and a dust-removing exhaust silica gel layer are arranged on the side adhered to the screen. The dustproof antistatic layer repels the dust located in the dust-removing exhaust silica gel layer and the side thereof by the negative charge characteristic of the dustproof antistatic layer, so as to reduce the amount of dust adsorbed and wrapped by the dust-removing exhaust silica gel layer before the film is adhered. The dust-removing exhaust silica gel layer adsorbs the dust on the screen by the adsorption and wrapping function, so as to reduce the bubble or damage of the silica gel layer after the film is adhered. The OCA optical glue layer arranged on the uppermost layer can not only prevent dust and moisture from the outside, but also enhance the brightness and contrast of the screen and improve the display effect.

[0007] In order to protect the optical film before use, in some embodiments, one side of the OCA optical glue layer away from the first surface is provided with a first release film, and the other side of the dust-removing exhaust silica gel layer away from the dustproof antistatic layer is provided with a second release film. The thickness of the first release film and the second release film is 50-75 μm.

[0008] In order to quickly separate the corresponding optical film when the optical film is used, the first release film includes a light release film with a thickness of 50 μm, and / or the second release film includes a heavy release film with a thickness of 75 μm.

[0009] In this way, by arranging the light release film on the upper end surface of the dustproof AB glue optical film, the operator can easily tear the release film, and the first release film is less likely to adhere to the dustproof AB glue optical film and not separate from the dustproof AB glue optical film. At the same time, by arranging the heavy release film on the lower end surface of the dustproof AB glue optical film, that is, arranging the second release film on the lower end surface of the optical film, the operator can easily tear the release film, and the second release film is less likely to adhere to the dustproof AB glue optical film and not separate from the dustproof AB glue optical film.

[0010] In some embodiments, the dust-removing exhaust silica gel layer is a modified crosslinking agent polysiloxane organic silicon coating, and the thickness of the dust-removing exhaust silica gel layer is 65 μm.

[0011] In some embodiments, the dustproof antistatic layer is an acid alkyl phosphate negative antistatic agent coating, and the thickness of the dustproof antistatic layer is 3 μm.

[0012] In some embodiments, the thickness of the OCA optical glue layer is 200 μm.

[0013] In some embodiments, the PET substrate includes one of the following: a PET substrate with a thickness of 50 μm, a PET substrate with a thickness of 75 μm, and a PET substrate with a thickness of 100 μm. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1Structure view of the dustproof AB glue optical film according to the embodiment of the application.

[0015] Figure 2 Dustproof schematic view of the dustproof AB glue optical film of the embodiment of the application;

[0016] Figure 3 Structure view of the dustproof AB glue optical film according to the preferred embodiment of the application.

[0017] Reference signs:

[0018] 100, PET substrate; 200, dust-eating exhaust silica gel layer; 300, dustproof antistatic layer; 400, OCA optical glue layer; 500, first release film; 600, second release film. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly mounted on the other component or there can be a middle component. When a component is referred to as being "provided on" another component, it can be directly provided on the other component or there can be a middle component. When a component is referred to as being "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments of the present application, and is not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0022] The dustproof AB glue optical film provided by the embodiment of the application is applied to a glass toughened film. By adopting glue modification, thickness adjustment and increase of an antistatic function on an exhaust silica gel layer, a dust-eating exhaust silica gel layer 200 and a dustproof antistatic layer 300 are formed, so that dust on a mobile phone screen is effectively prevented and eaten, and bubble points or protection film scrapping caused by incomplete cleaning before pasting the film are avoided. Figure 1For the structure view of the dustproof AB glue optical film according to the embodiment of the application, the dustproof AB glue optical film is illustrated, and the problems that the related art mobile phone protective film cannot effectively prevent dust and is easy to enter dust in the process of pasting the film to cause damage to the silica gel layer of the protective film are solved.

[0023] Please refer to Figures 1 to 3 The dustproof AB glue optical film of the embodiment of the application includes a PET substrate 100, a dust-adsorbing exhaust silica gel layer 200, a dustproof antistatic layer 300, and an OCA optical glue layer 400. The OCA optical glue layer 400 is arranged on the first surface of the PET substrate 100 by roll coating. The dustproof antistatic layer 300 is arranged on the second surface of the PET substrate 100 by micro-concave roller kiss coating. The dust-adsorbing exhaust silica gel layer 200 is arranged on the side, away from the second surface, of the dustproof antistatic layer 300 by slit extrusion coating. Wherein,

[0024] The thickness of the PET substrate 100 is 50-100 μm.

[0025] In the embodiment, the PET substrate 100 is used as the substrate of the protective film, and is used as the carrier of other functional preparations. In some optional embodiments, the PET substrate 100 can be selected from one of the following: a 50-μm-thick PET substrate, a 75-μm-thick PET substrate, and a 100-μm-thick PET substrate.

[0026] The dustproof antistatic layer 300 is used to repel dust arranged on the dust-adsorbing exhaust silica gel layer 200 and the circumferential side thereof, so as to at least reduce the amount of dust adsorbed and wrapped by the dust-adsorbing exhaust silica gel layer 200 before pasting the film. The thickness of the dustproof antistatic layer 300 is 1-3 μm.

[0027] In the embodiment, the acid alkyl phosphate negative antistatic agent is directly coated on the PET substrate 100 by micro-light roller coating, and the coating thickness is controlled to be a preset thickness, and the surface impedance is controlled to be 10 9 Ω to 10 11 Ω; in some optional embodiments, the dustproof antistatic layer 300 is a 3-μm-thick dustproof antistatic layer, and the dustproof antistatic layer 300 is an acid alkyl phosphate negative antistatic agent coating.

[0028] The dust-adsorbing exhaust silica gel layer 200 is used to adsorb and wrap dust arranged on the screen. The thickness of the dust-adsorbing exhaust silica gel layer 200 is 55-65 μm.

[0029] In the embodiment, the modified crosslinking agent and polysiloxane silicone glue water are mixed at a mass ratio of 5-8:100, stirred for 50-60 minutes to allow the crosslinking agent to fully mix and react with the silicone glue water, and then coated on the dustproof and antistatic layer 300 by a slot extrusion coating method after the silicone glue water is mixed, and the coating thickness is controlled at 55-65um. In some optional embodiments, the dust-removing and air-removing silica gel layer 200 has a thickness of 65um.

[0030] The OCA optical glue layer 400 is set as an outer dustproof layer, and the thickness of the OCA optical glue layer 400 is 200-250um.

[0031] In the embodiment, the solvent-free photocuring OCA glue is stirred for 30-40 minutes, coated on the first surface of the PET substrate 100 by a roll coating method, and the coating thickness is controlled between 200-250um.

[0032] In the dustproof AB glue optical film, the dustproof and antistatic layer 300 and the dust-removing and air-removing silica gel layer 200 are arranged on the side of the screen, the dust on the dust-removing and air-removing silica gel layer 200 and its periphery is repelled by the negative charge characteristics of the dustproof and antistatic layer 300, so as to reduce the amount of dust adsorbed and wrapped by the dust-removing and air-removing silica gel layer 200 before the film is attached, the dust on the screen is adsorbed by the adsorption and wrapping function of the dust-removing and air-removing silica gel layer 200, and the air bubble or damage to the silica gel layer of the protective film after the film is attached is reduced; the OCA optical glue layer 400 is arranged on the uppermost layer, which not only protects dust and moisture on the outside, but also enhances the brightness and contrast of the screen, improves the display effect, and solves the problem that the related art protective film cannot effectively prevent dust and is easy to enter dust during the film attaching process, resulting in damage to the silica gel layer of the protective film.

[0033] It should be noted that in the embodiment, the dust-removing and air-removing silica gel layer 200 is modified with glue, the thickness is adjusted, and the antistatic function is increased, which effectively prevents the dust from being eaten on the screen of the mobile phone, and even if the cleaning before the film is attached is not thorough, it will not cause air bubble points or scrap after the film is attached.

[0034] It needs to be further explained that the dust-eating exhaust silica gel layer 200 is arranged to contact the screen of the mobile phone, the dust-eating exhaust silica gel layer 200 has the function of adsorbing and wrapping dust, and the dustproof and antistatic layer 300 has the function of reducing the adsorption of dust; before the mobile phone protection film is pasted, the dust in the space near the screen of the mobile phone is repelled by the negative charge of the dustproof and antistatic layer 300, so as to reduce the amount of dust adsorbed by the dust-eating exhaust silica gel layer 200 during the process of pasting the film and after the film is pasted; if there is still a small amount of dust remaining on the screen when pasting the film, the dust-eating exhaust silica gel layer 200 can be used to adsorb and wrap the dust, thereby greatly improving the yield and efficiency of pasting the film; it can be understood that, as shown in Figure 2 It can be understood that, as shown in

[0035] In order to protect the optical film before use, in some embodiments, the side of the OCA optical adhesive layer 400 away from the first surface is provided with a first release film 500, and the other side of the dust-eating exhaust silica gel layer 200 away from the dustproof and antistatic layer 300 is provided with a second release film 600, wherein the thickness of the first release film 500 and the second release film 600 is 50-75 μm.

[0036] In order to realize the quick separation of the corresponding optical film when the optical film is used, in some embodiments, the first release film 500 includes a light release film with a thickness of 50 μm, and the second release film 600 includes a heavy release film with a thickness of 75 μm.

[0037] It can be understood that, in this way, by arranging the light release film on the upper end face of the dustproof AB adhesive optical film, the operator can easily tear the release film, and the first release film 500 is less likely to adhere to the dustproof AB adhesive optical film without being separated from the dustproof AB adhesive optical film; at the same time, by arranging the heavy release film on the lower end face of the dustproof AB adhesive optical film, that is, arranging the second release film 600 on the lower end face of the optical film, the operator can easily tear the release film, and the second release film is less likely to adhere to the dustproof AB adhesive optical film without being separated from the dustproof AB adhesive optical film.

[0038] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0039] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application. Any appropriate changes and variations to the above embodiments within the spirit and principles of the present application shall fall within the scope of the present application.

Claims

1. A dustproof AB adhesive optical film for use in tempered glass films, characterized in that, The material includes a PET substrate (100), a dust-absorbing and venting silicone layer (200), a dustproof and antistatic layer (300), and an OCA optical adhesive layer (400). The OCA optical adhesive layer (400) is applied to the first surface of the PET substrate (100) by roller coating. The dustproof and antistatic layer (300) is applied to the second surface of the PET substrate (100) by micro-gutter coating. The dust-absorbing and venting silicone layer (200) is applied to the side of the dustproof and antistatic layer (300) opposite to the second surface by slot extrusion coating. The thickness of the PET substrate (100) is 50-100 μm; The dustproof and antistatic layer (300) is used to repel dust placed on the dust-absorbing and venting silicone layer (200) and its surroundings, so as to at least reduce the amount of dust adsorbed and wrapped by the dust-absorbing and venting silicone layer (200) before the film is applied. The thickness of the dustproof and antistatic layer (300) is 1 to 3 μm. The dust-absorbing and venting silicone layer (200) is used to absorb and encapsulate dust placed on the screen, wherein the thickness of the dust-absorbing and venting silicone layer (200) is 55-65 μm. The OCA optical adhesive layer (400) is configured as an outer dustproof protective layer, and the thickness of the OCA optical adhesive layer (400) is 200-250 μm.

2. The dustproof AB adhesive optical film according to claim 1, characterized in that, The OCA optical adhesive layer (400) has a first release film (500) on the side facing away from the first surface, and the dust-absorbing and venting silicone layer (200) has a second release film (600) on the other side facing away from the dustproof and antistatic layer (300). The thickness of the first release film (500) and the second release film (600) is 50-75 μm.

3. The dustproof AB adhesive optical film according to claim 2, characterized in that, The first release film (500) includes a light release film with a thickness of 50 μm, and / or the second release film (600) includes a heavy release film with a thickness of 75 μm.

4. The dustproof AB adhesive optical film according to claim 1, characterized in that, The ash-absorbing and venting silicone layer (200) is a modified crosslinking agent polysiloxane organosilicon coating, and the thickness of the ash-absorbing and venting silicone layer (200) is 65μm.

5. The dustproof AB adhesive optical film according to claim 1, characterized in that, The dustproof and antistatic layer (300) is an acidic alkyl phosphate-negative antistatic agent coating, and the thickness of the dustproof and antistatic layer (300) is 3μm.

6. The dustproof AB adhesive optical film according to claim 1, characterized in that, The thickness of the OCA optical adhesive layer (400) is 200 μm.

7. The dustproof AB adhesive optical film according to claim 1, characterized in that, The PET substrate (100) includes one of the following: a PET substrate with a thickness of 50 μm, a PET substrate with a thickness of 75 μm, or a PET substrate with a thickness of 100 μm.

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