Isolation shielding layer for preventing electromagnetic wave, electrostatic, radio frequency and magnetic-field interference damage

Abstract

The present invention relates to a shielding layer capable of resisting interference and destruction of electromagnetic wave, static electricity, radio frequency and magnetic field. Said shielding layer is formed from internal layer, intermediate layer and external layer. The described internal layer is polyethylene or polypropylene film or vaccum aluminium-plated film, the intermediate layer is iron base material or galvanized sheet and its external layer is polypropylene or polyethylene film or vaccum aluminium-plated film.

Description

technical field [0001] The invention relates to a product material capable of insulating and shielding electromagnetic waves, static electricity, radio frequency and magnetic fields, in particular to a product material that can be used to prevent interference and destruction of electromagnetic waves, static electricity, radio frequency and magnetic fields, such as a protective material in the body of the outer layer of a wallet. layer. Background technique [0002] At present, electromagnetic waves, static electricity, radio frequency, and magnetic fields have serious interference and damage to magnetic cards and ID cards. After magnetic cards are damaged by interference, they will lose their functions after degaussing or interference damage and cannot be used, which brings great trouble to users. Other products sold on the market Magnetic card protection products, such as other wallets, have relatively high manufacturing material costs, single functions, complicated structu...

AI Technical Summary

Problems solved by technology

[0002] At present, electromagnetic waves, static electricity, radio frequency, and magnetic fields have serious interference and damage to magnetic cards and ID cards. After magnetic cards are damaged by interference, they will lose their functions after degaussing or interference damage and cannot be used, which brings great trouble to users. Other products sold on the market Magnetic card protection products, such as other wallets, etc., have high material cost, single function, complex structure and processing, few protection functions, and are not easy to be widely used.

For this reason, the applicant has applied to China Patent Office successively for the anti-magnetic card protective layer made by multiple new structures, but there are still imperfections in the design of the material.