Protection film used for surface of NFC and preparation method of protection film

Abstract

The invention relates to a protection film used for the surface of NFC. The protection film comprises a PET base material layer, an adhesive layer arranged on one side of the PET base material layer and a release film layer attached to the adhesive layer. A black ink layer is arranged on the other side of the PET base material layer, the black ink layer is coated with a matte oil layer which is formed by film formation of an organic delustering agent, the black ink layer contains 0.5%-0.8% of aluminum compound, and the mean grain size of the aluminum compound ranges from 0.2 mm to 0.5 mm. The invention further relates to a preparation method of the protection film. The matte oil layer prevents fingerprints and scratches, meanwhile, the protection film has the functions of resisting solvents, achieving heat radiation and the like, and the service life of an NFC chip can be effectively prolonged. In addition, the aluminum compound is added to the black ink layer, waves, interfering with communication message receiving of a mobile phone, sent by the NFC chip can be shielded, it is guaranteed that the adhesive force of the adhesive layer of the protection film is moderate, the protection film can be completely attached to the surface of NFC, and adhesive residues or other pollution cannot be caused to the surface of NFC after the protection film is removed.

Description

Technical field [0001] The invention relates to the field of protective films, in particular to a protective film used on the surface of an NFC and a preparation method thereof. Background technique [0002] NFC technology (NearFieldCommunication, near field communication), also known as short-range wireless communication technology, is a short-distance non-contact identification and interconnection technology that allows non-contact point-to-point data transmission between electronic settings, and its use distance is less than or equal to 0.1m, mainly used in digital cameras, computers, mobile phones, PDAs and other electronic equipment. [0003] NFC technology is becoming more and more popular in mobile phones. Its main functions include mobile payment, mobile card swiping, and mobile data transmission. The NFC chip used in the mobile phone is very small and the internal structure of the chip is complicated. Once the surface is affected by scratches, moisture, etc., it will affe...

AI Technical Summary

Problems solved by technology

The NFC chip used in the mobile phone is very small, and the internal structure of the chip is complex. Once the surface is scratched, damp, etc., it will affect the payment function of the NFC. Moreover, the NFC contains electromagnetic shielding materials, which will affect the reception of mobile phone communication signals. Thus affecting the normal operation of the mobile phone

In addition, when the mobile phone is in operation, it will generate a lot of heat, and the long-term high temperature environment of the NFC chip will affect its service life

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