Magnetism-insulating sheet with protecting film and preparation method

A technology of magnetic isolation sheet and protective film, which is applied in the manufacture of permanent magnets, inductors/transformers/magnets, magnets, etc., can solve the problems of low cost and high efficiency of magnetic isolation sheets, and achieves low cost, simple and easy method, good performance The effect of temperature resistance

Inactive Publication Date: 2017-09-05
深圳市金核科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that there is no method for attaching magnetic shields of various shapes with high efficiency, low cost and good effect, the present invention provides a magnetic shield with a protective film and a preparation method

Method used

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  • Magnetism-insulating sheet with protecting film and preparation method
  • Magnetism-insulating sheet with protecting film and preparation method
  • Magnetism-insulating sheet with protecting film and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, in the prior art, the PET adhesive tape 2 is generally used to bond the surface of the magnetic isolation sheet 1. The PET adhesive tape 2 is generally cut in batches, and the cutting itself has errors, so it is easy to be mismatched when it is attached to the magnetic isolation sheet. If manual lamination is used, the efficiency is relatively low, and manual lamination also has certain errors; if the size of the magnetic isolation sheet 1 is measured by a machine, and then the PET sticker 2 is cut according to the magnetic isolation sheet 1, although the PET sticker 2 is solved to a certain extent. The problem of mismatching the size of the combination and the magnetic isolation sheet, but the cost is relatively high. And adopt these two kinds of methods to carry out lamination to the magnetic isolating sheet and all have the situation that the side of the magnetic isolating sheet 1 is not coated, so the waterproof, moisture-proof property of...

Embodiment 2

[0047] Such as image 3 Shown, the method for spraying rubber paint on the surface of the magnetic isolation sheet comprises the following steps:

[0048] Material preparation: Prepare the magnetic sheet to be sprayed, the rubber paint and thinner for spraying.

[0049] Cleaning: Clean the surface of the magnetic sheet to be sprayed to ensure that the surface is clean and free of dust and moisture.

[0050] Preparation before spraying: Stir the rubber paint evenly and adjust the appropriate viscosity with a special thinner, then inject it into the paint container. There is a stirring device in the container to keep the paint uniform and not precipitated. Turn on the air supply and exhaust system of the spraying workshop, and blow the working environment with compressed air to remove dust.

[0051] Spraying environment requirements: dust-free, room temperature between 15 and 35 degrees, humidity <80%.

[0052] Spray gun: gravity spray gun or siphon spray gun, nozzle diamete...

Embodiment 3

[0067] Such as Figure 4 Shown, the method for dipping the rubber coating on the surface of the magnetic isolation sheet comprises the following steps:

[0068] Material preparation: Prepare the magnetic sheet to be sprayed, the paint and special thinner for spraying.

[0069] Cleaning: Clean the surface of the magnetic sheet to be sprayed to ensure that the surface is clean and free of dust and moisture.

[0070] Preparation before dipping: Stir the paint evenly and adjust the appropriate viscosity with a special thinner, and then pour it into the dipping tank. There is a stirring device in the dipping tank to keep the paint uniform and not precipitated. Open the air supply and exhaust system of the impregnation workshop, and blow the working environment with compressed air to remove dust.

[0071] Operating environment requirements: dust-free, room temperature between 15 and 35 degrees, humidity <80%.

[0072] Dipping: Place the cleaned magnetic sheet to be coated on a sp...

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PUM

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Abstract

The invention provides a magnetic isolation sheet with a protective film. Each side of the outer surface of the magnetic isolation sheet is attached with a protective film. The protective film is a rubber protective film. The rubber protective film is made of rubber sprayed or dipped on the outer surface of the magnetic isolation sheet Formed by curing the paint, the protective film can also be a PET protective film. Regardless of the shape of the magnetic isolation sheet, the protective film and the magnetic isolation sheet are completely matched, and can protect the magnetic isolation sheet in all directions. It has the functions of waterproof, acid and alkali resistance, and oxidation resistance, and provides good insulation performance; It has good temperature resistance, and the method of attaching a protective film on the surface of the magnetic isolation sheet is simple and easy, with high efficiency and low cost.

Description

technical field [0001] The invention relates to a magnetic isolation sheet, in particular to a magnetic isolation sheet with a protective film and a preparation method. Background technique [0002] As a fashionable and convenient charging method, wireless charging is more and more favored by consumers, and it is developing rapidly in the field of consumer electronics such as mobile phones and tablet computers. However, wireless chargers have defects such as low charging efficiency and high heat generation during charging. In order to improve charging efficiency and ensure safe use, the current mainstream solution is to attach a magnetic isolation sheet to the back of the wireless charger transmitter and receiver coils. The magnetic isolation sheet is a magnetic sheet-like auxiliary material for the coils at both ends of the wireless charger. It is a soft magnetic material sintered at a constant high temperature, with high magnetic permeability and low magnetic loss factor....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/02H01F1/34H01F41/02B05D1/02B05D1/18
CPCH01F7/0215B05D1/02B05D1/18H01F1/344H01F41/026
Inventor 巫济辉
Owner 深圳市金核科技股份有限公司
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