Screen protection sticker customization system and film cutting tool

Abstract

The utility model discloses a screen protector customization system and a film cutting tool. The film cutting tool can be used for cutting a size film with the hardness of at least 7H, and a transverse reference surface perpendicular to the long axis direction of the film cutting tool and a longitudinal reference surface perpendicular to the transverse reference surface are defined. The film cutting tool comprises a supporting section and a cutting section connected to the supporting section. The cutting section is provided with a first side face, a second side face spaced from the first side face, a primary blade face connected to the first side face and a primary blade face connected to the second side face and the secondary blade face. The main blade face and the secondary blade face are connected to form a main blade, and the main blade is located on the longitudinal datum plane. An oblique angle larger than 0 degree and smaller than 3 degrees is formed between the first side face and the longitudinal reference face. Therefore, according to the film cutting tool, the cutting section has specific conditions, so that a film with the hardness of at least 7H can be cut.

Description

Technical Field

[0001] This utility model relates to a screen protector system and a cutting tool, and more particularly to a screen protector customization system and a film cutting tool, which is suitable for cutting films with a hardness of at least 7H. Background Technology

[0002] Existing screen protector cutting tools are only suitable for cutting soft films with a hardness of less than 3H to form shapes that conform to various mobile phone models. However, screen protectors with a hardness of 7H or higher are difficult to cut to conform to the shapes of various mobile phones. Therefore, manufacturers of mobile phone screen protectors can only stock multiple shapes to correspond to different mobile phone models for screen protectors with a hardness of 7H or higher. This not only significantly increases inventory costs but also makes it difficult to meet the screen protector needs of smaller mobile phone brands.

[0003] Therefore, the applicant believes that the above-mentioned defects can be improved. So, the applicant has devoted himself to research and applied scientific principles, and finally proposed a utility model with a reasonable design that effectively improves the above-mentioned defects. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a screen protector customization system and a film cutting tool, which can effectively improve the defects that may be caused by existing film cutting tools.

[0005] This utility model discloses a film cutting tool, which defines a transverse reference plane perpendicular to its long axis and a longitudinal reference plane perpendicular to the transverse reference plane. The film cutting tool can be used to cut a film of a certain size with a hardness of at least 7H. The film cutting tool includes: a support section; and a cutting section connected to the support section. The cutting section has a first side surface, a second side surface spaced apart from the first side surface, a primary cutting edge connected to the first side surface, and a main cutting edge connected to the second side surface and the secondary cutting edge. The main cutting edge and the secondary cutting edge are connected to form a main cutting edge, and the main cutting edge is located above the longitudinal reference plane. The first side surface and the longitudinal reference plane form an angle between 0 degrees and 3 degrees. The main cutting edge and the transverse reference plane form a first angle between 40 degrees and 45 degrees. The main cutting edge has a first height between 0.74 mm and 0.94 mm corresponding to the long axis direction.

[0006] Preferably, the main blade has a tip away from the support section and a top end adjacent to the support section, and the main cutting edge has a bottom edge connected to the tip and a top edge connected to the top end; wherein, the cutting section has: a first end face connected to the first side face, the second side face and the bottom edge of the main cutting edge to jointly form the tip; and a second end face connected to the first side face, the second side face and the top edge of the main cutting edge to jointly form the top end.

[0007] Preferably, the first end face is formed with a secondary cutting edge extending from the tip of the blade, and the secondary cutting edge has a second height of between 4 micrometers and 6 micrometers corresponding to the long axis direction.

[0008] Preferably, the secondary cutting edge is elongated and parallel to the main cutting edge, the width of the secondary cutting edge is between 4 micrometers and 6 micrometers, and the area of ​​the main cutting edge is at least 5 times the area of ​​the secondary cutting edge.

[0009] Preferably, the bottom edge of the main cutting edge has a height of 0.73 mm to 0.77 mm corresponding to the long axis direction, the support segment defines a center line parallel to the long axis direction, and the distance between the first side surface and the center line is less than the distance between the second side surface and the center line; a second angle of 91 degrees to 91.5 degrees is formed between the second side surface and the transverse reference plane, and a third angle of 23 degrees to 27 degrees is formed between the main cutting edge and the longitudinal reference plane.

[0010] Preferably, the cutting segment is integrally formed and connected to the support segment, the film cutting tool includes a mounting segment, and the support segment is welded and fixed to the mounting segment.

[0011] This utility model also discloses a screen protector customization system, which includes: a film cutting device comprising: a carrier body; a displacement mechanism mounted on the carrier body and movable relative to the carrier body; a processing module mounted on the carrier body; wherein the processing module is electrically coupled to the displacement mechanism to drive the displacement mechanism to move sequentially along a first cutting path and a second cutting path that are different from each other; and a film cutting cutter mounted on the displacement mechanism; wherein the film cutting cutter defines a transverse reference plane perpendicular to its long axis and a longitudinal direction perpendicular to the transverse reference plane. To a reference plane, the cutting tool includes: a support section; and a cutting section connected to the support section, wherein the cutting section has a first side surface, a second side surface spaced apart from the first side surface, a primary cutting edge connected to the first side surface, and a main cutting edge connected to the second side surface and the secondary cutting edge; wherein the main cutting edge and the secondary cutting edge are connected to form a main cutting edge, and the main cutting edge is located above the longitudinal reference plane; wherein the first side surface and the longitudinal reference plane form an oblique angle between greater than 0 degrees and less than 3 degrees, and the main cutting edge and the transverse reference plane form a first angle between 40 degrees and 45 degrees. An angle, and the main blade having a first height between 0.74 mm and 0.94 mm corresponding to the long axis direction; and a size film, which can be cut into a screen protector by a cutting operation of the film cutting equipment; wherein, the size film comprises: a service layer having a hardened film and an adhesive film formed on the hardened film; wherein, the hardened film has a hardness of at least 7H; a buffer layer comprising a first buffer film attached to the hardened film and a second buffer film attached to the first buffer film; wherein, the hardness of the hardened film, the hardness of the first buffer film and the hardness of the second buffer film decrease sequentially, and The thickness of the hardened film, the thickness of the first buffer film, and the thickness of the second buffer film decrease sequentially; and a bottom layer is attached to the bonding film; wherein, when the size film is placed on the film cutting equipment for the cutting operation, the bottom layer of the size film is fixed to the carrier body, and the displacement mechanism is driven by the processing module to cut the main blade of the film cutting tool relative to the buffer layer and the use layer first along the first cutting path to form a first contour, and then cut along the second cutting path to form a second contour located outside the first contour, which has at least one positioning hole.

[0012] Preferably, the size-measuring film has an identification code located on the buffer layer, and the film-cutting device further includes a scanner mounted on the carrier body, which is electrically coupled to the processing module; wherein, the screen protector customization system includes a cloud server electrically coupled to the processing module and the scanner; wherein, when the size-measuring film is fixed to the carrier body, the scanner can scan the identification code to generate a signal, and the cloud server can receive the signal through the processing module to allow the film-cutting device to perform the cutting operation.

[0013] Preferably, the thickness of the second buffer film is 40% to 90% of the thickness of the first buffer film, and the thickness of the first buffer film is 60% to 75% of the thickness of the hardened film.

[0014] Preferably, the sum of the thickness of the first buffer film and the thickness of the second buffer film is 60% to 105% of the thickness of the bonding film, and the thickness of the hardening film is 55% to 90% of the thickness of the bonding film.

[0015] In summary, the screen protector customization system and film cutting blade disclosed in this utility model embodiment facilitate the cutting of films (or hardened films) with a hardness of at least 7H by having specific conditions in the cutting section (such as: the angle range of the bevel, the configuration of the secondary blade surface, the first angle corresponding to the main blade being between 40 degrees and 45 degrees, and the first height of the main blade being between 0.74 mm and 0.94 mm).

[0016] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, these descriptions and drawings are only used to illustrate this utility model and are not intended to limit the scope of protection of this utility model in any way. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a screen protector customization system according to an embodiment of the present invention.

[0018] Figure 2 This is a three-dimensional schematic diagram of the film-cutting tool according to an embodiment of the present invention.

[0019] Figure 3 for Figure 2 A three-dimensional diagram from another perspective.

[0020] Figure 4 for Figure 2 Front view diagram.

[0021] Figure 5 for Figure 2A side view diagram.

[0022] Figure 6 for Figure 3 Front view diagram.

[0023] Figure 7 for Figure 6 An enlarged schematic diagram of part VII.

[0024] Figure 8 for Figure 1 A schematic diagram of a film cutting tool cutting a film of the specified size along a first cutting path.

[0025] Figure 9 for Figure 1 A schematic diagram of a film cutting tool cutting a film of the specified size along a second cutting path. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of the "customized screen protector system and film cutting tool" disclosed in this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0027] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0028] Please see Figures 1 to 9 The image shows one embodiment of this utility model. This embodiment discloses a screen protector customization system 1000, which includes a film cutting device 100, a film 200 of a specific size suitable for the film cutting device 100, and a cloud server 300 electrically coupled to the film cutting device 100. However, this utility model is not limited thereto. For example, in other embodiments of this utility model not shown, the screen protector customization system 1000 may omit the cloud server 300 according to actual needs.

[0029] It should be noted that the screen protector customization system 1000 is preferably used by manufacturers that process mobile phone screen protectors. This allows them to select the mobile phone model and use the cutting equipment 100 to cut the film 200 to create a corresponding screen protector, thus achieving a customized cutting effect. In other words, cutting equipment that is not part of the customization process is different from the screen protector customization system 1000 described in this embodiment.

[0030] Furthermore, in this embodiment, the size film 200 includes a bottom layer 201, a buffer layer 202, and a service layer 203 sandwiched between the bottom layer 201 and the buffer layer 202. The service layer 203 has a hardened film 2031 and an adhesive film 2032 located on opposite sides. The bottom layer 201 is attached to the adhesive film 2032 of the service layer 203, while the buffer layer 202 is attached to the hardened film 2031 of the service layer 203.

[0031] Furthermore, to prevent defects such as burrs from forming in the dimensional film 200 after cutting, the dimensional film 200 preferably possesses at least some of the following features, but is not limited thereto. The bonding film 2032 is formed on the hardened film 2031, and the hardened film 2031 has a hardness of at least 7H. The buffer layer 202 includes a first buffer film 202a attached to the hardened film 2031 and a second buffer film 202b attached to the first buffer film 202a. Additionally, the bottom layer 201 can be a cut-resistant sheet material 201a, or the bottom layer 201 can include the sheet material 201a and a dust-removing film 201b connected between the sheet material 201a and the bonding film 2032; this invention is not limited thereto. However, the dust-removing film 201b can be omitted according to actual needs.

[0032] The hardness of the hardened film 2031, the hardness of the first buffer film 202a, and the hardness of the second buffer film 202b decrease sequentially, and the thickness of the hardened film 2031, the thickness of the first buffer film 202a, and the thickness of the second buffer film 202b decrease sequentially. In this embodiment, the thickness of the second buffer film 202b is 40% to 90% (e.g., 75% to 90%) of the thickness of the first buffer film 202a, and the thickness of the first buffer film 202a is 60% to 75% of the thickness of the hardened film 2031. Alternatively, the sum of the thickness of the first buffer film 202a and the thickness of the second buffer film 202b is 60% to 105% (e.g., 95% to 105%) of the thickness of the bonding film 2032, and the thickness of the hardening film 2031 is 55% to 90% (e.g., 75% to 90%) of the thickness of the bonding film 2032.

[0033] For example, the first buffer film 202a is made of a soft material, and the second buffer film 202b is also made of a soft material. Furthermore, the thickness of the first buffer film 202a can be between 95 micrometers (μm) and 110 micrometers, the thickness of the second buffer film 202b can be between 40 micrometers and 90 micrometers, the thickness of the hardening film 2031 can be between 130 micrometers and 190 micrometers, and the bonding film 2032 is made of high-adhesion AB adhesive with a thickness between 150 micrometers and 250 micrometers. The board 201a can be white with a thickness between 140 micrometers and 225 micrometers, and the dust removal film 201b can be transparent with a thickness between 100 micrometers and 150 micrometers.

[0034] Furthermore, in this embodiment, the size film 200 also has an identification code 2021 located on the buffer layer 202. The identification code 2021 can be directly printed on the buffer layer 202 or separately attached to the buffer layer 202; this invention is not limited to the above. For example, in other embodiments not shown in this invention, the number of layers of the size film 200 can be adjusted according to actual needs (e.g., omitting the bottom layer 201).

[0035] Furthermore, the size film 200 (or the hardening film 2031) is defined to have a hardness of at least 7H (e.g., pencil hardness), and the area of ​​the size film 200 is larger than the screen area of ​​any commercially available mobile phone. Accordingly, any film cutting equipment used only for cutting soft films is different from the screen protector customization system 1000 referred to in this embodiment.

[0036] Furthermore, the material of the size film 200 can be adjusted and changed according to actual needs. For example, the size film 200 can be a flexible protective film and is made of polyethylene terephthalate (PET), recycled polyethylene terephthalate (RPET), thermoplastic polyurethane resin (TPU), or recycled thermoplastic polyurethane resin (RTPU), but this utility model does not limit it.

[0037] Furthermore, in order to cut the film 200 of the specified size with a hardness of at least 7H, the film cutting device 100 is equipped with film cutting tools 1 having a specific structural design. That is, the structural design of the film cutting tool 1 is a key factor in enabling the film cutting device 100 to cut the film 200 of the specified size with a hardness of at least 7H (e.g., in this embodiment, through the cooperation of the film cutting tool 1 and the specified size film 200, a hardened film 2031 with a hardness of 9H can be achieved, while simultaneously preventing burrs from forming on the laminated film). Accordingly, this embodiment will first describe the film cutting tool 1, and then describe the other components of the film cutting device 100.

[0038] like Figures 2 to 7 As shown, the film cutting tool 1 defines a transverse reference plane P1 perpendicular to its long axis direction L and a longitudinal reference plane P2 perpendicular to the transverse reference plane P1. In this embodiment, the film cutting tool 1 includes a mounting section 11, a support section 12 connected to the mounting section 11, and a cutting section 13 connected to the support section 12. The cutting section 13 is integrally formed and connected to the support section 12, and the support section 12 is welded and fixed to the mounting section 11. That is, the film cutting tool 1 is a two-piece joint structure, and the film cutting tool 1 is preferably a single-piece structure, excluding integral forming.

[0039] In other words, the mounting section 11 and the cutting section 13 are respectively connected to opposite ends of the support section 12, and the support section 12 is connected to approximately the center of the end face of the mounting section 11, while the cutting section 13 is offset relative to the end face of the support section 12, but this is not a limitation.

[0040] The cutting segment 13 has a first side surface 131, a second side surface 132 spaced apart from the first side surface 131, a primary cutting edge 136 connected to the first side surface 131, and a main cutting edge 133 connected to the second side surface 132 and the primary cutting edge 136. The first side surface 131, the second side surface 132, and the main cutting edge 133 are all planar, and the main cutting edge 133 and the secondary cutting edge 136 are connected to form a main cutting edge 13a. The main cutting edge 13a is located above the longitudinal reference plane P2. The secondary cutting edge 136 is elongated and parallel to the main cutting edge 13a, but this is not a limitation. For example, in other embodiments not shown in this invention, the main cutting edge 13a may be slightly offset relative to the longitudinal reference plane P2 (e.g., offset by 0.05 mm); that is, the longitudinal reference plane P2 passes through the main cutting edge 133 and is adjacent to the main cutting edge 13a.

[0041] The first side surface 131 forms an angle σ4 between the longitudinal reference plane P2 and the first side surface 131, which is greater than 0 degrees and less than 3 degrees. The main cutting edge 13a forms a first angle σ1 between 40 degrees and 45 degrees with the transverse reference plane P1. The main cutting edge 13a has a first height H1 corresponding to the major axis direction L, which is between 0.74 mm and 0.94 mm. Preferably, the first height H1 is between 0.8 mm and 0.9 mm. In other words, any cutting tool that fails to meet the above structural conditions (such as the angle σ4, the first angle σ1, and the first height H1) is not conducive to cutting films 200 with a hardness of 7H or higher, and is different from the film-cutting tool 1 referred to in this embodiment. Furthermore, the width W136 of the secondary cutting edge 136 is between 4 micrometers and 6 micrometers, and the area of ​​the main cutting edge 133 is at least 5 times the area of ​​the secondary cutting edge 136.

[0042] Accordingly, the film cutting tool 1 is configured with specific conditions in the cutting section 13 to facilitate cutting the size film 200. Furthermore, to make it easier for the film cutting tool 1 to cut the size film 200, the film cutting tool 1 preferably has at least some of the following features, but is not limited thereto.

[0043] Furthermore, the support segment 12 defines a centerline C parallel to the long axis direction L, and the centerline C in this embodiment is located above the longitudinal reference plane P2, but is not limited thereto. The distance D131 between the first side surface 131 and the centerline C is less than the distance D132 between the second side surface 132 and the centerline C. A second angle σ2, between 91 and 91.5 degrees, is formed between the second side surface 132 and the transverse reference plane P1, and a third angle σ3, between 23 and 27 degrees, is formed between the main cutting edge 133 and the longitudinal reference plane P2 (or the centerline C).

[0044] Furthermore, the main cutting edge 13a has a tip 131a away from the support section 12 and a top end 132a adjacent to the support section 12. The main cutting edge 133 has a bottom edge 1331 connected to the tip 131a and a top edge 1332 connected to the top end 132a. The bottom edge 1331 of the main cutting edge 133 has a height H1331 corresponding to the major axis direction L, which is between 0.73 mm and 0.77 mm.

[0045] The cutting segment 13 has a first end face 134 and a second end face 135 spaced apart from each other. The first end face 134 is connected to the bottom edge 1331 of the first side face 131, the second side face 132, and the main cutting edge 133 to jointly form the cutting tip 131a. The second end face 135 is connected to the top edge 1332 of the first side face 131, the second side face 132, and the main cutting edge 133 to jointly form the top edge 132a.

[0046] The first side face 131, the first end face 134, the second side face 132, and the second end face 135 are connected and surround each other to form a ring, which is the annular side face of the cutting segment 13. The first side face 131 and the second side face 132 are separated by a blade thickness T13, which can be of equal thickness from the first end face 134 to the second end face 135, but is not limited thereto. That is, in other embodiments not shown in this invention, the blade thickness T13 can also gradually increase from the tip 131a towards the tip 132a, thereby effectively supporting the main blade 13a. Further, the blade thickness T13 is preferably 0.22 mm to 0.38 mm, but this invention is not limited thereto.

[0047] The first end face 134 has a secondary cutting edge 13b extending from the blade tip 131a, and the secondary cutting edge 13b has a second height H2 corresponding to the long axis direction L, which is between 4 micrometers (μm) and 6 micrometers. Accordingly, the film cutting tool 1 can, by having the main cutting edge 13a and the secondary cutting edge 13b with specific conditions, make the main cutting edge 13a and the secondary cutting edge 13b work together to more effectively cut the sized film 200 and effectively prevent the sized film 200 from generating burrs on the bonding film 2032.

[0048] Furthermore, although the film-cutting blade 1 is described in this embodiment as being applied to the film-cutting device 100, the present invention is not limited thereto. For example, in other embodiments of the present invention not shown, the film-cutting blade 1 may also be used alone (e.g., for sale) or in combination with other components, depending on actual needs.

[0049] like Figure 1 , Figure 8 and Figure 9 As shown above, this is a structural description of the film cutting tool 1. The following describes the other components of the film cutting device 100. The film cutting device 100 includes a support body 2, a displacement mechanism 3, a processing module 4, and a scanner 5. The displacement mechanism 3, the processing module 4, and the scanner 5 are all mounted on the support body 2, and the displacement mechanism 3 and the scanner 5 are electrically coupled to the processing module 4.

[0050] Furthermore, the displacement mechanism 3 is movable relative to the carrier body 2, and the processing module 4 is electrically coupled to the displacement mechanism 3 to drive the displacement mechanism 3 to move sequentially along a first cutting path and a second cutting path that are different from each other. The film cutting tool 1 is mounted on the displacement mechanism 3 by the mounting section 11 so that the film cutting tool 1 can move synchronously with the displacement mechanism 3.

[0051] Furthermore, the cloud server 300 is electrically coupled to the processing module 4 and the scanner 5. Therefore, when the size film 200 is fixed to the carrier body 2, the scanner 5 can scan the identification code 2021 of the size film 200 to generate a signal, and the cloud server 300 can receive the signal through the processing module 4 to allow the film cutting equipment 100 to perform the cutting operation and identify the material of the size film 200.

[0052] It should be further noted that the processing module 4 in this embodiment also includes a touch screen for the user to input the mobile phone model to which the screen protector is to be applied. Accordingly, the processing module 4 can cause the screen protector cutting device 100 to perform the corresponding cutting operation based on the mobile phone model input by the user, but this invention is not limited thereto. For example, in other embodiments of this invention not shown, the processing module 4 can also receive signals from an external device (such as a computer or the user's mobile phone) in other ways to obtain the mobile phone model to which the screen protector is to be applied.

[0053] When the size film 200 is placed in the film cutting equipment 100 for the cutting operation, the size film 200 is fixed to the carrier body 2. The displacement mechanism 3 is driven by the processing module 4 so that the main blade 13a of the film cutting knife 1 first cuts along the first cutting path relative to the buffer layer 202 and the use layer 203 to form a first contour S1, and then cuts along the second cutting path to form a second contour S2 located outside the first contour S1, which has at least one positioning hole 2022.

[0054] As described above, since the film cutting device 100 cuts into the size film 200 by the buffer layer 202 rather than by the bonding film 2032 of the use layer 203, it can effectively reduce damage to the adhesive layer of the bonding film 2032, avoid the use layer 203 from producing rough edges (such as white edge type adhesive damage), and make the cut edge smooth and non-scratchy.

[0055] It should be further noted that the displacement mechanism 3 can drive the cutting tool 1 to move relative to the sized film 200 along mutually perpendicular X-axis, Y-axis, and Z-axis directions, and the object being moved (such as the cutting tool 1 or the sized film 200) can be adjusted and changed according to actual needs. For example, the cutting tool 1 can be driven by the displacement mechanism 3 to move along the X-axis and Z-axis directions, while the sized film 200 is driven by the displacement mechanism 3 to move along the Y-axis direction, so that the cutting tool 1 can move relative to the sized film 200 sequentially along the first cutting path and the second cutting path.

[0056] Furthermore, after the screen protector is formed by the cutting operation, the buffer layer 202 has a screen block 2023 and a plurality of positioning blocks 2024 separated from the screen block 2023.

[0057] [Technical Effects of the Embodiments of this Utility Model]

[0058] In summary, the screen protector customization system and film cutting blade disclosed in this utility model embodiment facilitate the cutting of the size film (or the hardened film) having at least 7H hardness by having specific conditions in the cutting section (such as: the angle range of the bevel angle, the configuration of the secondary blade surface, the first angle corresponding to the main blade being between 40 degrees and 45 degrees, and the first height of the main blade being between 0.74 mm and 0.94 mm, and the structural configuration of the size film).

[0059] Furthermore, the film-cutting tool disclosed in this embodiment of the present invention can also, by having the main blade and the secondary blade with specific conditions (e.g., the secondary blade has a second height between 4 micrometers and 6 micrometers), make the main blade and the secondary blade more conducive to cutting the size film with a hardness of at least 7H, and can effectively prevent the size film from producing burrs on the bonding film (e.g., white edge type glue damage on the working layer).

[0060] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the patent scope of the present utility model. Therefore, all equivalent technical changes made based on the contents of the present utility model specification and drawings are included in the patent scope of the present utility model.

Claims

1. A film cutting knife characterized by, The film cutting tool defines a transverse reference plane perpendicular to a long axis direction thereof and a longitudinal reference plane perpendicular to the transverse reference plane, and the film cutting tool is capable of cutting a size film having a hardness of at least 7H; wherein the film cutting tool comprises: a support section; and a cutting section connected to the support section, and the cutting section has a first side surface, a second side surface spaced from the first side surface, a primary blade surface connected to the first side surface, and a main blade surface connected to the second side surface and the secondary blade surface; wherein the main blade surface and the secondary blade surface are connected to form a main edge, and the main edge is located on the longitudinal reference plane; wherein the first side surface and the longitudinal reference plane are clamped at an oblique angle of greater than 0 degrees and less than 3 degrees, a first angle between the main edge and the transverse reference plane is between 40 degrees and 45 degrees, and the main edge corresponds to the long axis direction and has a first height of between 0.74 mm and 0.94 mm.

2. The film cutting knife of claim 1, wherein, The main edge has a tip end away from the support section and a top end adjacent to the support section, and the main blade surface has a bottom edge connected to the tip end and a top edge connected to the top end; wherein the cutting section has: a first end surface connected to the first side surface, the second side surface, and the bottom edge of the main blade surface to collectively form the tip end; and a second end surface connected to the first side surface, the second side surface, and the top edge of the main blade surface to collectively form the top end.

3. The film cutting knife of claim 2, wherein, The first end surface forms a secondary edge extending from the tip end, and the secondary edge corresponds to the long axis direction and has a second height of between 4 microns and 6 microns.

4. The film cutting knife of claim 1 wherein, The secondary blade surface is elongated and parallel to the main edge, the width of the secondary blade surface is between 4 microns and 6 microns, and the area of the main blade surface is at least 5 times the area of the secondary blade surface.

5. The film cutting knife of claim 2, wherein, The bottom edge of the main blade surface corresponds to the long axis direction and has a height of between 0.73 mm and 0.77 mm, the support section defines a center line parallel to the long axis direction, and the distance between the first side surface and the center line is less than the distance between the second side surface and the center line; a second angle between the second side surface and the transverse reference plane is between 91 degrees and 91.5 degrees, and a third angle between the main blade surface and the longitudinal reference plane is between 23 degrees and 27 degrees.

6. The film cutting knife of claim 1 wherein, The cutting section is integrally connected to the support section, the film cutting tool includes a mounting section, and the support section is welded and fixed to the mounting section.

7. A screen protector sticker customization system, comprising: The screen protection sticker customization system comprises: a film cutting device comprising: a carrier body; a displacement mechanism mounted on the carrier body and capable of moving relative to the carrier body; a processing module mounted on the carrier body; wherein the processing module is electrically coupled to the displacement mechanism to drive the displacement mechanism to move along a first cutting path and a second cutting path different from each other in sequence; and A cutting film device is provided. The cutting film device comprises a cutting film tool, a displacement mechanism, a processing module, a bearing body, and a screen protector customization system. The cutting film tool is mounted on the displacement mechanism. The cutting film tool has a transverse reference surface perpendicular to a long axis direction and a longitudinal reference surface perpendicular to the transverse reference surface. The cutting film tool comprises: a support section; and a cutting section connected to the support section. The cutting section has a first side surface, a second side surface spaced apart from the first side surface, a primary blade surface connected to the first side surface, and a main blade surface connected to the second side surface and the primary blade surface. The main blade surface and the primary blade surface are connected to form a main edge. The main edge is located on the longitudinal reference surface. The first side surface and the longitudinal reference surface form an included angle of greater than 0 degrees and less than 3 degrees. The main edge and the transverse reference surface form a first angle of 40 degrees to 45 degrees. The main edge has a first height of 0.74 mm to 0.94 mm corresponding to the long axis direction. A size film can be cut into a screen protector by a cutting operation of the cutting film device. The size film comprises: a use layer having a hardened film and a bonding film formed on the hardened film. The hardened film has a hardness of at least 7H; a buffer layer comprising a first buffer film attached to the hardened film and a second buffer film attached to the first buffer film. The hardness of the hardened film, the first buffer film, and the second buffer film decreases in order. The thickness of the hardened film, the first buffer film, and the second buffer film decreases in order; and a bottom layer attached to the bonding film.

8. The screen protector guest customization system of claim 7, wherein, When the size film is placed on the cutting film device for the cutting operation, the bottom layer of the size film is fixed to the bearing body. The displacement mechanism is driven by the processing module. The main edge of the cutting film tool first cuts along the first cutting path to form a first contour relative to the buffer layer and the use layer, and then cuts along the second cutting path to form a second contour located outside the first contour, which has at least one positioning hole.

9. The screen protector guest customization system of claim 7, wherein, The size film has an identification code located on the buffer layer. The cutting film device further comprises a scanner mounted on the bearing body and electrically coupled to the processing module. The screen protector customization system comprises a cloud server electrically coupled to the processing module and the scanner. When the size film is fixed to the bearing body, the scanner can scan the identification code to generate a signal, and the cloud server can receive the signal through the processing module to allow the cutting film device to perform the cutting operation. The thickness of the second buffer film is 40% to 90% of the thickness of the first buffer film. The thickness of the first buffer film is 60% to 75% of the thickness of the hardened film.

10. The screen protector guest customization system of claim 7, wherein, The sum of the thickness of the first cushion film and the thickness of the second cushion film is 60% to 105% of the thickness of the fitted film, and the thickness of the hardened film is 55% to 90% of the thickness of the fitted film.

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