Protective film with self-defoaming function

Abstract

The utility model discloses a protective film with a self-defoaming function, which comprises a surface protective layer and a mounting adhesive layer, a protective film base material layer with a specific function is arranged below the surface protective layer, a self-defoaming functional layer is arranged below the protective film base material layer with the specific function, the mounting adhesive layer is arranged above the self-defoaming functional layer, and the protective film base material layer with the specific function is arranged below the mounting adhesive layer. And a release layer is arranged below the mounting adhesive layer. According to the protective film with the self-defoaming function, the self-defoaming function layer is made of an organic silicon material, and the organic silicon material has excellent gas permeability; after the film is pasted, auxiliary media and gas left between the functional protective film and a protected surface can be dissolved and discharged through the self-defoaming functional layer, so that the bubble problem caused by wet film pasting and other negative problems caused by bubble extension are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of functional protective films, in particular to a self-defoaming functional protective film. Background Art

[0002] At present, the installation of protective adhesive films is generally completed by the wet film laminating process to complete the lamination with the protected surface. The wet film laminating process, also known as the water laminating process, is to spray an auxiliary medium whose main component is water on the protected surface or / and the adhesive surface of the protective film, and use a flexible scraper to press and scrape to drive out the aqueous auxiliary medium and gas between the protected surface and the adhesive surface of the protective film, thereby achieving the initial lamination between the adhesive surface of the protective film and the protected surface; as the residual auxiliary medium and a small amount of gas diffuse and evaporate through the protective film, the complete bonding between the adhesive surface of the protective film and the protected surface is finally completed. Wet film laminating is widely used because it is easy to operate, is conducive to the position adjustment between the protective film and the protected surface during the film laminating process, and has a wide range of applicable scenarios. After searching, it is found that the protective film in the prior art is typically a protective film such as the publication number CN101110276B, which includes a base film and a resistance film, the base film is used to form on the surface of a substrate to be protected, and the resistance film is formed on the surface of the base film. The material of the base film includes amorphous boron nitride doped with carbon nanoparticles or amorphous boron carbide doped with carbon nanoparticles. The resistance film includes a bonding layer, an intermediate layer and a coating layer formed in sequence on the surface of the base film. In the protective film of the present invention, the base film material is selected from amorphous boron nitride or amorphous boron carbide, which has a small friction coefficient and has a good touch when used in the shell of electronic products. Its main feature is that the resistance film formed on the surface of the base film can effectively resist the effects of the external environment and protect the base film, thereby further protecting the shell of the electronic product.

[0003] In summary, as the thickness of the protective film increases, a functional protective layer is added to the surface of the protective film, or the material of the protective film is denser, the residual auxiliary medium and a small amount of gas will have difficulty passing through the protective film, and bubbles will form. When the roughness of the protected surface is large, this phenomenon is more serious and greatly affects the appearance. In order to remove the bubbles, it is generally necessary to use a sharp tool (needle or utility knife) to puncture the protective film at the bubble position to facilitate the discharge of the bubbles. However, this operation is inefficient and destroys the integrity of the protective film. It will seriously affect the effect of the protective film in specific uses. In view of the above problems, it is necessary to improve the existing functional protective film. Utility Model Content

[0004] The purpose of the utility model is to provide a self-defoaming functional protective film to solve the problem proposed in the above background technology that as the thickness of the existing protective film increases, a functional protective layer is added to the surface of the protective film, or the material of the protective film is relatively dense, the residual auxiliary medium and a small amount of gas are difficult to pass through the protective film, thus forming bubbles, and artificially puncturing the bubbles has low efficiency and destroys the integrity of the protective film.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a self-defoaming functional protective film, comprising a surface protective layer and an installation adhesive layer,

[0006] A specific functional protective film substrate layer is arranged below the surface protective layer, and a self-defoaming functional layer is arranged below the specific functional protective film substrate layer. The installation adhesive layer is arranged above the self-defoaming functional layer, and a release layer is arranged below the installation adhesive layer.

[0007] Preferably, the surface protection layer is a PET film, a PE film, a PP film or a PS film, and the mounting adhesive layer is a pressure-sensitive adhesive layer.

[0008] Preferably, the specific functional protective film substrate layer is an antifouling layer, and the specific functional protective film substrate layer is an antifouling layer and a back adhesive layer, and the specific functional protective film substrate layer is a conductive functional layer.

[0009] Preferably, the self-defoaming functional layer is in a first structural form, and the first structural form is a first organic silicone pressure-sensitive adhesive.

[0010] Preferably, the self-defoaming functional layer is in a second structural form, and the second structural form includes a second organic silicone pressure-sensitive adhesive and a first silicone rubber layer, and the second organic silicone pressure-sensitive adhesive is arranged above the first silicone rubber layer.

[0011] Preferably, the self-defoaming functional layer is a third structural form, and the third structural form includes a third organosilicon pressure-sensitive adhesive, a second silicone rubber layer and a fourth organosilicon pressure-sensitive adhesive, and the second silicone rubber layer is arranged between the third organosilicon pressure-sensitive adhesive and the fourth organosilicon pressure-sensitive adhesive.

[0012] Preferably, the self-defoaming functional layer is a fourth structural form, and the fourth structural form includes a fifth organosilicon pressure-sensitive adhesive, a third silicone rubber layer and a sixth organosilicon pressure-sensitive adhesive, and the third silicone rubber layer is arranged between the fifth organosilicon pressure-sensitive adhesive and the sixth organosilicon pressure-sensitive adhesive.

[0013] Preferably, a tear block is connected to the side of the release layer, and convex points are evenly distributed on the upper and lower sides of the tear block.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the self-defoaming functional protective film,

[0015] (1) The utility model can effectively solve the problem that when the thickness of the existing protective film increases, a functional protective layer is added to the surface of the protective film, or the material of the protective film is relatively dense, the residual auxiliary medium and a small amount of gas are difficult to pass through the protective film, which will form bubbles, and the manual puncture of the bubbles is inefficient and destroys the integrity of the protective film. The self-defoaming functional layer is made of organic silicon material, which has excellent gas permeability; the auxiliary medium and gas remaining between the functional protective film and the protected surface after film application can be dissolved and discharged through the self-defoaming functional layer, which effectively solves the bubble problem caused by wet film application and other negative problems extended by bubbles;

[0016] (2) The utility model can effectively solve the problem that the existing protective film needs to be manually torn off the release layer from the bottom of the installation adhesive layer when in use through the coordinated use of the tear block and the protrusion, while the same size design makes it difficult for the user to quickly find the fulcrum for tearing, which affects the tearing efficiency and is easy to contaminate the installation adhesive layer during the tearing process. The tear block is foldable and can be folded and stored under the release layer when not in use, without taking up storage space. When the release layer needs to be torn off, the tear block is used as the fulcrum to tear off the entire release layer from the bottom of the installation adhesive layer, and the entire tearing process will not cause contamination to the installation adhesive layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall product structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the second structural form of the self-defoaming functional layer of the utility model;

[0019] Figure 3 This is a schematic diagram of the third structural form of the self-defoaming functional layer of the utility model;

[0020] Figure 4 This is a schematic diagram of the fourth structural form of the self-defoaming functional layer of the utility model.

[0021] In the figure: 1. surface protection layer; 2. specific functional protection film substrate layer; 21. anti-fouling layer; 22. back adhesive layer; 3. self-defoaming functional layer; 31. first structural form; 311. first silicone pressure-sensitive adhesive; 32. second structural form; 321. second silicone pressure-sensitive adhesive; 322. first silicone rubber layer; 33. third structural form; 331. third silicone pressure-sensitive adhesive; 332. second silicone rubber layer; 333. fourth silicone pressure-sensitive adhesive; 34. fourth structural form; 341. fifth silicone pressure-sensitive adhesive; 342. third silicone rubber layer; 343. sixth silicone pressure-sensitive adhesive; 4. mounting adhesive layer; 5. release layer; 6. tear block; 7. bump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a self-defoaming functional protective film, embodiment 1

[0024] like Figure 1 As shown, a specific functional protective film substrate layer 2 is arranged below the surface protective layer 1, and a self-defoaming functional layer 3 is arranged below the specific functional protective film substrate layer 2, a mounting adhesive layer 4 is arranged above the self-defoaming functional layer 3, and a release layer 5 is arranged below the mounting adhesive layer 4, and the release layer 5 is a silicone release paper with a thickness of 0.2 mm.

[0025] In a further embodiment, a tear block 6 is connected to the side of the release layer 5, and protrusions 7 are evenly distributed on the upper and lower sides of the tear block 6. The protrusions 7 play a protective role to prevent the tear block 6 from accidentally slipping when tearing the release layer 5 by hand.

[0026] In a further embodiment, the surface protection layer 1 is a PET film, a PE film, a PP film or a PS film, the surface protection layer 1 is a semi-permeable PE material, 0.02 mm thick, the installation adhesive layer 4 is a pressure-sensitive adhesive layer, and the installation adhesive layer 4 is a polyacrylate pressure-sensitive adhesive, 0.05 mm thick.

[0027] In a further embodiment, the specific functional protective film substrate layer 2 is an anti-fouling layer 21 with a hardened surface, a colorless and transparent PET material, and a thickness of 0.13 mm.

[0028] In a further embodiment, the self-defoaming functional layer 3 is in a first structural form 31 , and the first structural form 31 is a first organic silicone pressure-sensitive adhesive 311 , and the first organic silicone pressure-sensitive adhesive 311 is 0.1 mm thick.

[0029] Specifically, the self-defoaming functional layer 3 is completely composed of the first silicone pressure-sensitive adhesive 311. In this embodiment, the first silicone pressure-sensitive adhesive 311 plays two roles: one is to connect the PET substrate and the polyacrylate pressure-sensitive adhesive mounting layer, and the other is to provide a self-defoaming function. The viscoelastic state of the first silicone pressure-sensitive adhesive 311 is very conducive to dissolving and discharging residual gases generated by the wet pasting process.

[0030] Embodiment 2

[0031] This embodiment is a further description of the above embodiment. It should be understood that this embodiment includes all the aforementioned technical features and is further described in detail.

[0032] like Figure 2 As shown, a specific functional protective film substrate layer 2 is arranged below the surface protective layer 1, and a self-defoaming functional layer 3 is arranged below the specific functional protective film substrate layer 2, a mounting adhesive layer 4 is arranged above the self-defoaming functional layer 3, and a release layer 5 is arranged below the mounting adhesive layer 4, and the release layer 5 is a silicone white PET release film with a thickness of 0.03 mm.

[0033] In a further embodiment, a tear block 6 is connected to the side of the release layer 5, and protrusions 7 are evenly distributed on the upper and lower sides of the tear block 6. The protrusions 7 play a protective role to prevent the tear block 6 from accidentally slipping when tearing the release layer 5 by hand.

[0034] In a further embodiment, the surface protection layer 1 is a PET film, a PE film, a PP film or a PS film, the surface protection layer 1 is made of transparent PET material, 0.02 mm thick, and has a light peeling force of 0.01 mm silicone backing adhesive, the installation adhesive layer 4 is a pressure-sensitive adhesive layer, and the installation adhesive layer 4 is a polyacrylate pressure-sensitive adhesive, 0.05 mm thick.

[0035] In a further embodiment, the specific functional protective film substrate layer 2 is an anti-fouling layer 21, and the anti-fouling layer 21 is made of colorless and transparent PET material with a thickness of 0.07 mm.

[0036] In a further embodiment, the self-defoaming functional layer 3 is a second structural form 32, and the second structural form 32 includes a second silicone pressure-sensitive adhesive 321 and a first silicone rubber layer 322. At the same time, the second silicone pressure-sensitive adhesive 321 is arranged above the first silicone rubber layer 322. The second silicone pressure-sensitive adhesive 321 is 0.03 mm, and the first silicone rubber layer 322 is 0.07 mm. The transparent PET surface protection layer 1 is attached to the anti-fouling layer 21 on the surface of the PET protective film by means of a 0.01 mm light peeling force silicone backing adhesive. After the wet film installation is completed, the surface protection film can be easily removed without residue.

[0037] Specifically, compared with the first embodiment, the main difference of this embodiment is that the thickness of the protective film PET substrate is reduced, and the self-defoaming functional layer 3 is composed of a 0.03mm second silicone pressure-sensitive adhesive 321 + a 0.07mm first silicone rubber layer 322. The second silicone pressure-sensitive adhesive 321 plays two roles: one is to connect the PET substrate and the first silicone rubber layer 322, and the other is to provide a partial self-defoaming function. At the same time, the first silicone rubber layer 322 plays another part of the self-defoaming function; since silicone rubber has mechanical properties superior to silicone pressure-sensitive adhesives, it also plays a role in compensating for the decrease in the mechanical properties of the overall protective film caused by the reduction of the PET substrate. Since the thickness of the dense PET substrate is reduced in this embodiment, it is more conducive to the diffusion and volatilization of residual auxiliary media and gases; the 0.03mm second silicone pressure-sensitive adhesive 321 + the 0.07mm first silicone rubber layer 322 together constitute the self-defoaming functional layer 3, which synergistically play the role of dissolving and discharging residual auxiliary media and gases.

[0038] Embodiment 3

[0039] This embodiment is a further description of the above embodiment. It should be understood that this embodiment includes all the aforementioned technical features and is further described in detail.

[0040] like Figure 3 As shown, a specific functional protective film substrate layer 2 is arranged below the surface protective layer 1, and a self-defoaming functional layer 3 is arranged below the specific functional protective film substrate layer 2, a mounting adhesive layer 4 is arranged above the self-defoaming functional layer 3, and a release layer 5 is arranged below the mounting adhesive layer 4, and the release layer 5 is a silicone white PET release film with a thickness of 0.03 mm.

[0041] In a further embodiment, a tear block 6 is connected to the side of the release layer 5, and protrusions 7 are evenly distributed on the upper and lower sides of the tear block 6. The protrusions 7 play a protective role to prevent the tear block 6 from accidentally slipping when tearing the release layer 5 by hand.

[0042] In a further embodiment, the surface protection layer 1 is a PET film, a PE film, a PP film or a PS film, the surface protection layer 1 is made of PVC material, with a thickness of 0.02 mm, and the mounting adhesive layer 4 is a pressure-sensitive adhesive layer.

[0043] In a further embodiment, the specific functional protective film substrate layer 2 is a conductive functional layer, that is, the specific functional protective film substrate layer 2 has a transparent conductive functional layer on the surface, and is made of colorless and transparent PET material with a thickness of 0.07 mm.

[0044] In a further embodiment, the self-defoaming functional layer 3 is a third structural form 33, and the third structural form 33 includes a third silicone pressure-sensitive adhesive 331, a second silicone rubber layer 332 and a fourth silicone pressure-sensitive adhesive 333, and the second silicone rubber layer 332 is arranged between the third silicone pressure-sensitive adhesive 331 and the fourth silicone pressure-sensitive adhesive 333, the third silicone pressure-sensitive adhesive 331 is 0.02 mm, the second silicone rubber layer 332 is 0.07 mm and the fourth silicone pressure-sensitive adhesive 333 is 0.02 mm.

[0045] Specifically, compared with the second embodiment, the main difference of this embodiment is that the self-defoaming functional layer 3 is composed of the third silicone pressure-sensitive adhesive 331 of 0.02 mm, the second silicone rubber layer 332 of 0.07 mm and the fourth silicone pressure-sensitive adhesive 333 of 0.02 mm. The third silicone pressure-sensitive adhesive 331 serves to connect the special functional protective film substrate layer 2 of the PET substrate and the second silicone rubber layer 332, and to provide a partial self-defoaming function; at the same time, the second silicone rubber layer 332 serves to provide a partial self-defoaming function and mechanical properties; the fourth silicone pressure-sensitive adhesive 333 is a newly added structure, which serves to connect the installation adhesive layer 4 and the second silicone rubber layer 332, and provides a partial self-defoaming function. Since the fourth silicone pressure-sensitive adhesive 333 is newly added in this embodiment, the problem of poor bonding between the silicone rubber layer and the polyacrylate pressure-sensitive adhesive that are difficult to bond can be effectively solved; the third silicone pressure-sensitive adhesive 331 is 0.02mm, the second silicone rubber layer 332 is 0.07mm and the fourth silicone pressure-sensitive adhesive 333 is 0.02mm, which together constitute the self-defoaming functional layer 3, and synergistically play the role of dissolving and discharging residual auxiliary media and gases.

[0046] Embodiment 4

[0047] This embodiment is a further description of the above embodiment. It should be understood that this embodiment includes all the aforementioned technical features and is further described in detail.

[0048] like Figure 4 As shown, a specific functional protective film substrate layer 2 is arranged below the surface protective layer 1, and a self-defoaming functional layer 3 is arranged below the specific functional protective film substrate layer 2, a mounting adhesive layer 4 is arranged above the self-defoaming functional layer 3, and a release layer 5 is arranged below the mounting adhesive layer 4, and the release layer 5 is a non-silicone transparent PET release film-fluoroplastic film with a thickness of 0.03mm.

[0049] In a further embodiment, a tear block 6 is connected to the side of the release layer 5, and protrusions 7 are evenly distributed on the upper and lower sides of the tear block 6. The protrusions 7 play a protective role to prevent the tear block 6 from accidentally slipping when tearing the release layer 5 by hand.

[0050] In a further embodiment, the surface protection layer 1 is a PET film, a PE film, a PP film or a PS film, the surface protection layer 1 is made of PP material, with a thickness of 0.02 mm, the installation adhesive layer 4 is a pressure-sensitive adhesive layer, and the installation adhesive layer 4 is a polyacrylate pressure-sensitive adhesive with a thickness of 0.05 mm.

[0051] In a further embodiment, the specific functional protective film substrate layer 2 is an anti-fouling layer 21, made of colorless and transparent PET material, 0.07 mm thick, polyacrylate pressure-sensitive adhesive, and the back adhesive layer 22 is 0.02 mm thick.

[0052] In a further embodiment, the self-defoaming functional layer 3 is a fourth structural form 34, and the fourth structural form 34 includes a fifth silicone pressure-sensitive adhesive 341, a third silicone rubber layer 342 and a sixth silicone pressure-sensitive adhesive 343, and the third silicone rubber layer 342 is arranged between the fifth silicone pressure-sensitive adhesive 341 and the sixth silicone pressure-sensitive adhesive 343, the fifth silicone pressure-sensitive adhesive 341 is 0.02 mm, the third silicone rubber layer 342 is 0.07 mm, and the sixth silicone pressure-sensitive adhesive 343 is 0.03 mm.

[0053] Specifically, compared with the third embodiment, the main difference of this embodiment is that a back adhesive layer 22 is newly added between the anti-fouling layer 21 and the self-defoaming functional layer 3. Since the newly added back adhesive layer 22 in this embodiment serves as a transition layer, the problem of relatively weak adhesion between the fifth silicone pressure-sensitive adhesive 341 and the specific functional protective film substrate layer 2 can be effectively solved, thereby improving the stability of the entire product. The self-defoaming functional layer 3, i.e., the fourth structural form 34, has the same composition as that in the third embodiment and the same functional structure as the third structural form 33, which will not be repeated here.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-defoaming functional protective film, comprising a surface protective layer (1) and a mounting adhesive layer (4), characterized in that: A specific functional protective film substrate layer (2) is arranged below the surface protective layer (1), and a self-defoaming functional layer (3) is arranged below the specific functional protective film substrate layer (2); the installation adhesive layer (4) is arranged above the self-defoaming functional layer (3), and a release layer (5) is arranged below the installation adhesive layer (4).

2. The self-defoaming functional protective film according to claim 1, characterized in that: The surface protection layer (1) is a PET film, a PE film, a PP film or a PS film, and the installation adhesive layer (4) is a pressure-sensitive adhesive layer.

3. The self-defoaming functional protective film according to claim 1, characterized in that: The specific functional protective film substrate layer (2) is an antifouling layer (21), and the specific functional protective film substrate layer (2) is an antifouling layer (21) and a back adhesive layer (22), and the specific functional protective film substrate layer (2) is a conductive functional layer.

4. The self-defoaming functional protective film according to claim 1, characterized in that: The self-defoaming functional layer (3) is in a first structural form (31), and the first structural form (31) is a first organic silicon pressure-sensitive adhesive (311).

5. The self-defoaming functional protective film according to claim 1, characterized in that: The self-defoaming functional layer (3) is a second structural form (32), and the second structural form (32) includes a second organic silicone pressure-sensitive adhesive (321) and a first silicone rubber layer (322), and the second organic silicone pressure-sensitive adhesive (321) is arranged above the first silicone rubber layer (322).

6. The self-defoaming functional protective film according to claim 1, characterized in that: The self-defoaming functional layer (3) is a third structural form (33), and the third structural form (33) includes a third organic silicone pressure-sensitive adhesive (331), a second silicone rubber layer (332) and a fourth organic silicone pressure-sensitive adhesive (333), and the second silicone rubber layer (332) is arranged between the third organic silicone pressure-sensitive adhesive (331) and the fourth organic silicone pressure-sensitive adhesive (333).

7. The self-defoaming functional protective film according to claim 1, characterized in that: The self-defoaming functional layer (3) is a fourth structural form (34), and the fourth structural form (34) includes a fifth organosilicon pressure-sensitive adhesive (341), a third silicone rubber layer (342) and a sixth organosilicon pressure-sensitive adhesive (343), and the third silicone rubber layer (342) is arranged between the fifth organosilicon pressure-sensitive adhesive (341) and the sixth organosilicon pressure-sensitive adhesive (343).

8. The self-defoaming functional protective film according to claim 1, characterized in that: The side surface of the release layer (5) is connected to a tearing block (6), and convex points (7) are evenly distributed on the upper and lower sides of the tearing block (6).

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