Self-adhesive shielding magnetic sheet

Abstract

The utility model relates to the technical field of shielding magnetic sheets, in particular to a self-bonding type shielding magnetic sheet, which comprises a magnetic sheet body, a plurality of shielding magnetic sheets and a plurality of shielding magnetic sheets, a protective film; the bonding layer is formed between the magnetic sheet body and the protective film; and the positioning hole penetrates through the middle parts of the magnetic sheet body, the bonding layer and the protective film. The bonding layer is arranged on the magnetic sheet body, and the protective film is arranged outside the bonding layer, so that the magnetic sheet body has self-adhesion, and when the magnetic sheet is specifically used, the magnetic sheet can be combined with an acting object through the bonding layer only by uncovering the protective film, so that the bonding is uniform and reliable. In addition, the positioning holes are formed in the magnetic sheet body so as to assist in positioning when the magnetic sheet is attached, and accurate attachment of the magnetic sheet is ensured. The problem that a shielding magnetic sheet cannot be accurately positioned and attached in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to shielding magnetic sheet technical field, especially shielding magnetic sheet of self -bonding formula. BACKGROUND

[0002] In prior art, shielding magnetic sheet is generally made of whole magnetic material sintering. Usually, shielding magnetic sheet is attached to wall surface and ceiling to form microwave darkroom, and then plays the role of shielding signal. However, since shielding magnetic sheet has no positioning fulcrum, and when it is attached to wall surface or ceiling, a layer of adhesive needs to be applied to the attached surface of shielding magnetic sheet, so that shielding magnetic sheet can be combined with wall surface or ceiling.

[0003] When applying adhesive, since it is generally applied now, manual application is usually adopted, which can cause uneven application of adhesive, and then result in poor adhesive effect of shielding magnetic sheet. Since shielding magnetic sheet has no corresponding positioning fulcrum, it is easy to cause misplacement of magnetic sheet when attached. SUMMARY

[0004] The utility model aims at providing a kind of self -bonding formula shielding magnetic sheet, solve the problem that shielding magnetic sheet cannot be accurately positioned and attached in prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0006] The utility model provides a kind of self -bonding formula shielding magnetic sheet, comprising:

[0007] Magnetic sheet body;

[0008] Protective film;

[0009] Bonding layer, the bonding layer is formed between the magnetic sheet body and the protective film;

[0010] Positioning hole, the positioning hole is arranged through the middle part of the magnetic sheet body, the bonding layer and the protective film.

[0011] Further, the cross section of the magnetic sheet body is square, and the side length of the square is 100-150mm.

[0012] Further, the thickness of the magnetic sheet body is 0.5-1mm.

[0013] Further, the thickness of the protective film is 5-10µm.

[0014] Further, the thickness of the bonding layer is 5-15µm.

[0015] Further, the material of the protective film is at least one selected from EVA, PVC, EVOH, PE, PES, PAN, PP, PS, PET, PA and PVDC.

[0016] Further, the component of the adhesive layer is a mixture composed of one or more selected from epoxy resin, polyurethane, silicone glue and acrylic compound.

[0017] Further, the magnetic sheet body is provided with a plurality of strip-shaped protrusions on the outer surface, which are used to provide sintering point position support and air permeability for the magnetic sheet body.

[0018] Thanks to the above technical scheme, the present application has the following advantages over the prior art:

[0019] The self-adhesive shielding magnetic sheet has the self-adhesive magnetic sheet body, the protective film and the adhesive layer, and the magnetic sheet body is combined with the object through the adhesive layer after the protective film is removed, so that the magnetic sheet is uniformly and reliably pasted. BRIEF DESCRIPTION OF DRAWINGS

[0020] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings in an exemplary but not limiting manner. The same reference signs in the drawings denote the same or similar components or parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the drawings:

[0021] Fig. 1 is a structural schematic view of a self-adhesive shielding magnetic sheet provided by the present application;

[0022] Fig. 2 is a top view of a self-adhesive shielding magnetic sheet provided by the present application;

[0023] Fig. 3 is a sectional view of a self-adhesive shielding magnetic sheet provided by the present application;

[0024] Among them, the reference signs are explained as follows:

[0025] 1, magnetic sheet body; 2, protective film; 3, adhesive layer; 4, positioning hole. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] Referring to Figs. 1 to 3 The self-bonding shielding magnetic sheet provided in the present application comprises a magnetic sheet body 1, a protective film 2, a bonding layer 3 and a positioning hole 4.

[0028] Specifically, the magnetic sheet body 1 is made of soft magnetic ferrite sintering, more specifically, it is made of Mn-Zn soft magnetic ferrite material sintering. In the magnetic sheet body 1, the filling rate of the soft magnetic ferrite material is above 80%.

[0029] The cross section of the magnetic sheet body 1 is square, and the length of the side of the cross section is controlled to be 100-150 mm. The cross section of the magnetic sheet body 1 is set to be square, which can help to evenly distribute the influence of the shielding material on the magnetic field in all directions and reduce the interference that may be caused by local magnetic field concentration. The square shape makes it easier to align the magnetic sheet during installation, especially when multiple shielding magnetic sheets need to be combined, the square corners are easy to align, ensuring better overall shielding effect.

[0030] In addition, the square design can effectively utilize space, especially in specific equipment or structures, reducing material waste. During the manufacturing process, components with square shape are also easier to cut and process, which can improve production efficiency and reduce cost.

[0031] In this embodiment, the thickness of the magnetic sheet body 1 is controlled to be 0.5-1 mm. Generally, if the magnetic sheet body 1 is set too thick, the overall structure will correspondingly increase in weight and be difficult to install. If it is set too thin, it may not be able to effectively shield external magnetic fields, resulting in increased electromagnetic interference (EMI). Thin magnetic sheets are also more prone to damage and are easily deformed or broken under stress. Therefore, the thickness of the magnetic sheet body 1 needs to be reasonably controlled.

[0032] For the above-mentioned protective film 2 and bonding layer 3, in the present application, the bonding layer 3 is arranged between the magnetic sheet body 1 and the protective film 2, i.e. the bonding layer 3 is coated on the inner surface of the magnetic sheet body 1, and the protective film 2 is formed on the other side of the bonding layer 3 to protect the bonding layer 3.

[0033] Specifically, the material of the protective film 2 can be selected from any one of EVA, PVC, EVOH, PE, PES, PAN, PP, PS, PET, PA and PVDC. As for the component of the adhesive layer 3, any one of epoxy resin, polyurethane, silicone glue and acrylic compound can be selected, which can ensure the combination of the adhesive layer 3 with the magnetic sheet body 1 and the combination of the adhesive layer 3 with the object (such as wall or ceiling). Of course, the material of the protective film 2 and the component of the adhesive layer 3 are not limited to the above enumerated materials, as long as the adhesive layer component can play a good adhesive effect on the magnetic sheet body 1 and the material of the protective film 2 can play a protective effect on the adhesive layer 3, which should be covered in the protection scope of the utility model.

[0034] In the embodiment of the utility model, the thickness of the protective film 2 is controlled to be 5~10µm, and the thickness of the adhesive layer 3 is controlled to be 5~15µm, so that the magnetic sheet body 1, the adhesive layer 3 and the protective film 2 can be well combined.

[0035] In addition, in the embodiment of the utility model, a positioning hole 4 is arranged in the middle of the magnetic sheet body 1, the adhesive layer 3 and the protective film 2. The positioning hole 4 can ensure accurate positioning of the magnetic sheet during installation or use, and reduce the risk of instability or failure caused by deviation. The positioning hole 4 makes the installation, disassembly and replacement of the magnetic sheet more convenient, and the operator can align or fix through the hole, reducing the complexity of operation. The shape of the positioning hole 4 can be circular, square or other shapes, and the specific opening is reasonably arranged according to actual production needs.

[0036] In the embodiment of the utility model, a plurality of strip-shaped protrusions 101 are further arranged on the outer surface of the magnetic sheet body 1. The strip-shaped protrusions 101 are arranged to ensure the permeability during sintering of the magnetic sheet body 1, and to provide corresponding point support for the magnetic sheet body 1, so that the magnetic sheet body 1 is more stable when placed on the sintering plate.

[0037] In summary, the self-adhesive shielding magnetic sheet provided in the utility model is formed by coating the adhesive layer 3 on the magnetic sheet body 1 and arranging the protective film 2. During specific installation, the protective film 2 is removed, and the magnetic sheet body 1 together with the adhesive layer 3 is attached to the surface of the object. When the object needs to be attached as a whole, the corresponding number of shielding magnetic sheets are attached one by one according to the size of the space of the object, so as to play a shielding effect. Compared with the shielding magnetic sheet in the prior art, the self-adhesive shielding magnetic sheet is convenient to use, simple to operate and high in work efficiency.

[0038] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A self-bonding shielded magnetic sheet, characterized by, The application relates to a magnetic sheet, which comprises: a magnetic sheet body (1); a protective film (2); a bonding layer (3) formed between the magnetic sheet body (1) and the protective film (2); a positioning hole (4) arranged through the middle part of the magnetic sheet body (1), the bonding layer (3) and the protective film (2).

2. A self-bonding shielded magnetic sheet according to claim 1, wherein The cross section of the magnetic sheet body (1) is a square, and the side length of the square is 100-150 mm.

3. The self-bonding magnetic sheet according to claim 1, wherein The thickness of the magnetic sheet body (1) is 0.5-1 mm.

4. The self-bonding magnetic sheet of claim 1, wherein, The thickness of the protective film (2) is 5-10 microns.

5. The self-bonding magnetic sheet of claim 1, wherein, The thickness of the bonding layer (3) is 5-15 microns.

6. The self-bonding magnetic sheet of claim 1, wherein, The material of the protective film (2) is at least one selected from EVA, PVC, EVOH, PE, PES, PAN, PP, PS, PET, PA and PVDC.

7. The self-bonding magnetic sheet of claim 1, wherein The component of the bonding layer (3) is a mixture composed of one or more selected from epoxy resin, polyurethane, silicone glue and acrylic compound.

8. The self-bonding magnetic sheet of claim 1, wherein, The outer surface of the magnetic sheet body (1) is provided with a plurality of strip-shaped protrusions (101), which are used for providing sintering point position support and air permeability for the magnetic sheet body (1).

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