Impact-resistant AB glue and glass toughened film

Abstract

The utility model discloses an anti-impact AB adhesive and a glass toughened film, the anti-impact AB adhesive comprises a buffer OCA adhesive layer, a non-Newtonian fluid film layer, a PET film layer and an exhaust silica gel layer, the exhaust silica gel layer is extruded and coated on the bottom end surface of the PET film layer through a slit, and is used for adhering the anti-impact AB adhesive to a target screen; the PET film layer is used for bearing the exhaust silica gel layer and the non-Newtonian fluid film layer; the non-Newtonian fluid film layer is coated on the top end surface of the PET film layer through a precision blade; the buffer OCA adhesive layer is arranged on the end face, away from the PET film layer, of the non-Newtonian fluid film layer through roller coating, the buffer OCA adhesive layer and the non-Newtonian fluid film layer form a buffer layer of the impact-resistant AB adhesive, and the problem that in the related technology, the impact resistance of the tempered film is poor is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical film technical field especially relates to impact resistance AB glue and glass toughened film. BACKGROUND

[0002] The display screen of electronic equipment such as mobile phone and tablet computer is generally pasted with a layer of toughened film, and the toughened film can prevent the display screen of electronic equipment from being scratched and falling.

[0003] The existing toughened film mainly relies on the toughened glass in the toughened film to prevent falling, and the anti-falling ability of the toughened glass is reflected by Mohs hardness. With the increase of Mohs hardness (the value becomes larger), the toughened glass is less likely to be broken, so that the anti-falling ability of the toughened film is better. However, with the increase of Mohs hardness of the toughened glass, the cost of the toughened film is proportional to and multiplied by the hardness of the toughened glass. The existing toughened film is generally made of toughened glass with low Mohs hardness, so as to reduce the cost of the toughened film and the selling price of the toughened film. However, at the same time, the anti-falling ability of the existing toughened film is relatively weak, and the toughened film is still easy to be broken. At the same time, the anti-impact performance of the toughened film in the related art is limited, and the display screen of the mobile phone or tablet computer pasted with the protective film is still prone to screen breakage.

[0004] At present, there is no effective solution to the problem of poor anti-impact performance of the toughened film in the related art. INVENTION CONTENTS

[0005] Therefore, it is necessary to provide an anti-impact AB glue and glass toughened film to at least solve the problem of poor anti-impact performance of the toughened film in the related art.

[0006] In a first aspect, the embodiments of the present application provide a technical solution as follows: an anti-impact AB glue, comprising a buffer OCA adhesive layer, a non-Newtonian fluid film layer, a PET film layer and an exhaust silicone layer, wherein the exhaust silicone layer is arranged at the bottom end face of the PET film layer through slit extrusion coating, and is used for adhering the anti-impact AB glue to a target screen, and the thickness of the exhaust silicone layer is 35-45 μm; the PET film layer is used for bearing the exhaust silicone layer and the non-Newtonian fluid film layer, and the thickness of the PET film layer is 50-75 μm; the non-Newtonian fluid film layer is arranged at the top end face of the PET film layer through precision doctor blade coating, and the thickness of the non-Newtonian fluid film layer is 30-40 μm; and the buffer OCA adhesive layer is arranged at the end face of the non-Newtonian fluid film layer away from the PET film layer through kiss roll coating, the buffer OCA adhesive layer and the non-Newtonian fluid film layer constitute a buffer layer of the anti-impact AB glue, and the thickness of the buffer OCA adhesive layer is 180-220 μm.

[0007] The impact-resistant AB glue has a buffer OCA adhesive layer and a non-Newtonian fluid film layer arranged on the side close to the toughened layer, forming an impact-resistant layer with double layers of non-Newtonian fluid material. Through the double impact-resistant layers, the impact-resistant AB glue can buffer the impact force of external impact or mobile phone falling on the screen, and reduce the risk of screen breakage.

[0008] In some embodiments, the exhaust silica gel layer is a polysiloxane silicone coating, and the thickness of the exhaust silica gel layer is 45 μm.

[0009] In some embodiments, the non-Newtonian fluid film layer is a polyethylene-polyacrylamide-polyvinyl chloride non-Newtonian fluid film layer, and the thickness of the non-Newtonian fluid film layer is 30 μm.

[0010] In some embodiments, the buffer OCA adhesive layer is a D30 non-Newtonian fluid and OCA adhesive composite adhesive layer, and the thickness of the buffer OCA adhesive layer is 180 μm.

[0011] In some embodiments, the PET film layer includes one of the following: a PET substrate with a thickness of 50 μm, a PET substrate with a thickness of 75 μm.

[0012] In order to protect the AB before use, in some embodiments, the top end surface of the buffer OCA adhesive layer is adhered to a first release film, and the bottom end surface of the exhaust silica gel layer is adhered to a second release film, wherein the thickness of the first release film and the second release film is 50-75 μm.

[0013] In order to quickly separate the corresponding AB glue when using the AB glue, 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.

[0014] In this way, by arranging the light release film on the upper end surface of the impact-resistant AB glue, the operator can easily tear the release film, and the first release film is less likely to adhere to the impact-resistant AB glue and not separate from the impact-resistant AB glue. At the same time, by arranging the heavy release film on the lower end surface of the impact-resistant AB glue, 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 impact-resistant AB glue and not separate from the impact-resistant AB glue.

[0015] In a second aspect, the application also provides a glass toughened film, which includes an AB glue optical film adhered to a toughened film layer, and the AB glue optical film includes the impact-resistant AB glue of the first aspect, wherein the thickness of the toughened film layer is 30-50 μm. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1The structural view of the impact-resistant AB glue according to the embodiment of the application.

[0017] Figure 2 The structural view of the impact-resistant AB glue according to the embodiment of the application.

[0018] Figure 3 The structural view of the tempered film pasted with the impact-resistant AB glue according to the embodiment of the application.

[0019] Figure 4 The structural view of the tempered film pasted with the impact-resistant AB glue according to the embodiment of the application.

[0020] Reference signs:

[0021] 100, buffer OCA adhesive layer; 200, non-Newtonian fluid film layer; 300, PET film layer; 400, exhaust silica gel layer; 500, first release film; 600, second release film; 700, tempered film layer. DETAILED DESCRIPTION

[0022] 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.

[0023] It should be noted that when a component is referred to as "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 "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 "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0024] 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.

[0025] Please refer to Figures 1 to 2 The impact-resistant AB glue according to the embodiment of the application includes a buffer OCA adhesive layer 100, a non-Newtonian fluid film layer 200, a PET film layer 300, and an exhaust silica gel layer 400, wherein,

[0026] An exhaust silicone layer 400 is disposed on the bottom end surface of the PET film layer 300 by slit extrusion coating and is used to adhere the impact-resistant AB adhesive to the target screen adhesive. The thickness of the exhaust silicone layer 400 is 35 μm to 45 μm.

[0027] In some optional embodiments, the exhaust silicone layer 400 includes but is not limited to a polysiloxane silicone coating, and the thickness of the exhaust silicone layer 400 is set to 45 μm.

[0028] The PET film layer 300 is used to carry the exhaust silicone layer 400 and the non-Newtonian fluid film layer 200. The thickness of the PET film layer 300 is 50 μm to 75 μm.

[0029] In this embodiment, the PET film layer 300 is one of the following: a 50 μm thick PET substrate and a 75 μm thick PET substrate.

[0030] The non-Newtonian fluid film layer 200 is disposed on the top end surface of the PET film layer 300 by precision doctor blade coating. The thickness of the non-Newtonian fluid film layer 200 is 30 μm to 40 μm.

[0031] In some optional embodiments, the non-Newtonian fluid film layer 200 includes but is not limited to a non-Newtonian fluid film layer of polyethylene-polyacrylamide-polyvinyl chloride, and the thickness of the non-Newtonian fluid film layer 200 is preferably set to 30 μm.

[0032] The buffer OCA adhesive layer 100 is disposed on the end surface of the non-Newtonian fluid film layer 200 away from the PET film layer 300 by roll coating. The buffer OCA adhesive layer 100 and the non-Newtonian fluid film layer 200 form a buffer layer of the impact-resistant AB adhesive. The thickness of the buffer OCA adhesive layer 100 is 180 μm to 220 μm.

[0033] In some optional embodiments, the buffer OCA adhesive layer 100 includes but is not limited to a D30 non-Newtonian fluid and OCA adhesive composite adhesive layer, and the thickness of the buffer OCA adhesive layer 100 is preferably set to 180 μm.

[0034] In the above-described impact-resistant AB adhesive, the buffer OCA adhesive layer 100 and the non-Newtonian fluid film layer 200 are disposed on the side close to the tempered layer to form an impact-resistant layer with double layers of non-Newtonian fluid material. Through the double-layer impact-resistant layer, the tempered film is buffered against external impact forces or the impact force of a dropped mobile phone, and the screen is protected against impact, reducing the risk of screen breakage.

[0035] It should be noted that the anti-impact layer of the double-layer non-Newtonian fluid material in the embodiment of the present application is added with non-Newtonian fluid material D30 in the buffer OCA adhesive layer 100 attached with the glass toughened film, and a special non-Newtonian fluid film layer 200 is additionally formed, which greatly buffers the impact force of the toughened film received from the outside or the impact force of the mobile phone falling, so as to protect the screen from impact.

[0036] In the embodiment, the exhaust silica gel layer 400 is prepared as follows: the polysiloxane organic silica gel water is mixed according to the technical specification ratio, and then stirred for 40-50 minutes. After the organic silica gel water is well prepared, the coating is coated on the PET film layer 300 by a slit extrusion coating method, and the coating thickness is controlled to be 35-45 um.

[0037] In the embodiment, the non-Newtonian fluid film layer 200 is prepared as follows: the non-Newtonian fluid materials polyethylene, polyacrylamide and polyvinyl chloride are mixed in a ratio of 10-15:45-50:30-40 into a special glue carrier, and then coated on the other side of the PET film layer 300 by a precision doctor blade coating method, and the thickness is controlled to be 30-40 um.

[0038] In the embodiment, the buffer OCA adhesive layer 100 is prepared as follows: the non-Newtonian fluid material D30 and the solvent-free light-cured OCA glue are mixed in a mass ratio of 20-30:100 and stirred for 50-60 minutes, and then coated on the non-Newtonian fluid film layer 200 by a roll coating method, and the coating thickness is controlled to be 180-220 um.

[0039] It should be noted that, with reference to Figure 4 , the anti-impact principle of the embodiment of the present application is as follows: the non-Newtonian fluid materials polyethylene, polyacrylamide, polyvinyl chloride and D3O material remain in a relaxed state under normal conditions, are soft and elastic, and immediately lock with each other and quickly tighten and harden once subjected to severe impact or extrusion, so as to digest external force. When the external force disappears, the material returns to its initial relaxed soft and elastic state. This material can react to different impact situations within nanoseconds, and has the characteristics of intelligent molecules.

[0040] In order to protect the AB before use, in some embodiments, the top end of the buffer OCA adhesive layer 100 is adhered to the first release film 500, and the bottom end of the exhaust silica gel layer 400 is adhered to the second release film 600, wherein the thicknesses of the first release film 500 and the second release film 600 are both 50-75 um.

[0041] In order to quickly separate the corresponding AB glue when using the AB glue, in some embodiments, the first release film 500 includes a light release film with a thickness of 50 um, and the second release film 600 includes a heavy release film with a thickness of 75 um.

[0042] It can be understood that, in this way, by arranging the light release film on the upper end surface of the impact-resistant AB glue, the operator can easily tear the release film, and the first release film 500 is less likely to adhere to the impact-resistant AB glue without being separated from the impact-resistant AB glue; at the same time, by arranging the heavy release film on the lower end surface of the impact-resistant AB glue, that is, arranging the second release film 600 on the lower end surface of the optical film, the operator can easily tear the release film, and the second release film 600 is less likely to adhere to the impact-resistant AB glue without being separated from the impact-resistant AB glue.

[0043] Reference Figures 3 to 4 The embodiment of the present application also provides a glass toughened film, which comprises an AB glue optical film bonded with a toughened film layer 700, and the AB glue optical film comprises the impact-resistant AB glue in the above embodiment, wherein the thickness of the toughened film layer 700 is 30-50 μm.

[0044] Reference Figure 4 The principle of the impact resistance of the glass toughened film of the embodiment of the present application is as follows: when the glass toughened film is subjected to external impact, the molecules (refer to the two different lines representing the circles in the Figure 4 ) in the buffer OCA adhesive layer 100 and the non-Newtonian fluid film layer 200 will be pressed and locked, that is, the molecules in the upper layer will be embedded between the molecules in the lower layer, so as to realize mutual locking between the molecules, make the corresponding film layer tighten and harden, thereby digesting external force and avoiding screen impact damage; when the external force disappears, each layer of the buffer layer will return to the initial relaxed soft state.

[0045] The technical features of the above embodiments can be combined in any way. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0046] 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, and as long as the above embodiments are appropriately changed and changed within the scope of the essential spirit of the present application, they fall within the scope of the present application.

Claims

1. An impact resistant AB glue, characterized in that, The anti-impact AB adhesive optical film comprises a buffer OCA adhesive layer (100), a non-Newtonian fluid film layer (200), a PET film layer (300) and an exhaust silicone layer (400), wherein, The exhaust silicone layer (400) is arranged on the bottom end surface of the PET film layer (300) by slit extrusion coating, and is used for adhering the impact-resistant AB adhesive to the target screen, and the thickness of the exhaust silicone layer (400) is 35-45 μm. The PET film layer (300) is used for bearing the exhaust silicone layer (400) and the non-Newtonian fluid film layer (200), and the thickness of the PET film layer (300) is 50-75 μm. The non-Newtonian fluid film layer (200) is arranged on the top end surface of the PET film layer (300) by precision doctor blade coating, and the thickness of the non-Newtonian fluid film layer (200) is 30-40 μm. The buffer OCA adhesive layer (100) is arranged on the end surface of the non-Newtonian fluid film layer (200) away from the PET film layer (300) by roll coating, and the buffer OCA adhesive layer (100) and the non-Newtonian fluid film layer (200) form a buffer layer of the impact-resistant AB adhesive, and the thickness of the buffer OCA adhesive layer (100) is 180-220 μm.

2. The impact resistant AB glue according to claim 1, wherein, The exhaust silicone layer (400) is a polysiloxane silicone coating, and the thickness of the exhaust silicone layer (400) is 45 μm.

3. The impact resistant AB glue as claimed in claim 1, wherein, The non-Newtonian fluid film layer (200) is a non-Newtonian fluid film layer of polyethylene-polyacrylamide-polyvinyl chloride, and the thickness of the non-Newtonian fluid film layer (200) is 30 μm.

4. The impact resistant AB glue of claim 1, wherein, The buffer OCA adhesive layer (100) is a D30 non-Newtonian fluid and OCA adhesive composite adhesive layer, and the thickness of the buffer OCA adhesive layer (100) is 180 μm.

5. The impact resistant AB glue of claim 1, wherein, The PET film layer (300) comprises one of a 50 μm thick PET substrate and a 75 μm thick PET substrate.

6. The impact resistant AB glue according to any one of claims 1 to 5, wherein, The top end surface of the buffer OCA adhesive layer (100) is adhered to a first release film (500), and the bottom end surface of the exhaust silicone layer (400) is adhered to a second release film (600), wherein the thicknesses of the first release film (500) and the second release film (600) are both 50-75 μm.

7. The impact resistant AB glue of claim 6, wherein, The first release film (500) comprises a light release film with a thickness of 50 μm, and / or the second release film (600) comprises a heavy release film with a thickness of 75 μm.

8. A glass toughened film comprising an AB adhesive optical film bonded to a toughened film layer (700), characterized in that, The AB adhesive optical film comprises the impact-resistant AB adhesive according to any one of claims 1-7, and the thickness of the tempered film layer (700) is 30-50 μm.

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