Antistatic PET (Polyethylene Terephthalate) thin film adhesive tape

Abstract

The invention discloses an antistatic PET (Polyethylene Terephthalate) thin film adhesive tape. The antistatic PET thin film adhesive tape comprises a PET thin film with the thickness of 0.025mm, which is used as a base layer; the surface of the PET thin film is coated with organic silica gel with the thickness of 0.02mm; silver ions are uniformly dispersed into the organic silica gel and the masspercent of the silver ions is 0.0015 percent; the surface resistance of the PET thin film is 105 ohms to 108 ohms; the friction static voltage and the surface static voltage of the PET thin film areless than or equal to 100V. The adhesive tape prepared by the invention has acid and alkali resisting, abrasion resisting and antistatic functions and can be used under various different weather humidity conditions; the antistatic PET thin film adhesive tape has the advantages of high economic benefits, low cost and long service life.

Description

Technical field: [0001] The invention relates to the technical field of adhesive tapes, in particular to an antistatic PET film adhesive tape. Background technique: [0002] With the rapid development of electronic technology, the gradual reduction of the physical size of integrated circuits, the continuous improvement of integration, and the widespread use of more new polymer materials, electrostatic discharge has become increasingly important, and the problem of electrostatic protection has become more and more important. for widespread attention. So far, the FPC (abbreviation: flexible circuit board) manufacturing process is almost all processed by subtractive method (etching method). Usually, copper clad board is used as the starting material, and the resist layer is formed by photolithography, and the unnecessary parts are etched away. The copper surface of the circuit board is formed into a circuit conductor, and then the cover film is pressed under high temperature a...

AI Technical Summary

Problems solved by technology

[0003] At present, some high-temperature resistant and anti-static PET film tapes on the market still have the following problems: (1) Introduce ionic additives into the interlayer between the adhesive layer and the substrate, and its electrostatic conductivity mainly depends on the humidity in the environment. In a high-temperature environment, It will not be able to play a normal antistatic effect; (2) introduce ionic additives into the adhesive layer, because these ionic additives will be in direct contact with the PI surface, and there will be migration from the inner layer of the adhesive layer to the surface of the adhesive layer and transferred to the PI surface (3) Introducing conductive metal particles or polymer particles into the adhesive, although it can maintain the static conduction function, will affect some of the adhesive itself due to the introduction of these conductive particles. Performance, such as reducing cohesive strength, wear resistance, acid and alkali resistance, etc.