A kind of antistatic polymer protective film and production method thereof

Abstract

The invention provides an antistatic high molecular protective film. The protective film comprises an antistatic primary film and a release film, wherein the antistatic primary film is an external coating layer type antistatic primary film, and the upper layer and the lower layer of the primary film are respectively coated with external coating layers. The combination between the antistatic primary film with the external coating layers and antistatic adhesive mainly contributes in the improvement on the antistatic effect of an antistatic adhesive layer and is the biggest breakthrough in research, the texture of base materials is judged to affect the conductive property of the adhesive layer to a certain extent, the resistance value of the surface of the adhesive layer is successfully improved to 10^6 to 10^9 from 10^10 to 10^11, the coated antistatic adhesive layer of the antistatic primary film is combined with the release film, a metal antistatic agent is added into an adhesive agent of the antistatic adhesive layer, the antistatic agent uses a lithium salt type antistatic agent, the electric charge density of metal lithium is great, the polarization is difficult to generate, the stability is high, a good conductive net is formed after the metal lithium is mixed with the adhesive, and the antistatic adhesive layer is combined with adhesive enhancing layers between the external coating layers of the antistatic primary film.

Description

technical field [0001] The invention relates to a polymer protective film, in particular to an antistatic polymer protective film and a production method thereof. Background technique [0002] Today's electronic products are becoming more and more complex in terms of appearance design and internal assembly. In the complex manufacturing process, it is more challenging to maintain consistent quality. In the electronics industry, both the product manufacturing process and product circulation In the process, the requirements for cleanliness and quality are becoming more and more specific and specific, so the general traditional antistatic protective film can no longer meet the requirements. For example, the clean room environment recognized by the electronics industry has been upgraded from a general clean room compartment to The clean room level, the lowest level is 10,000 dust fallouts, and the general class has been upgraded to 1,000-grade dust fallout. Correspondingly, the a...

AI Technical Summary

Problems solved by technology

[0002] Today's electronic products are becoming more and more complex in terms of appearance design and internal assembly. In the complex manufacturing process, it is more challenging to maintain consistent quality. In the electronics industry, both the product manufacturing process and product circulation In the process, the requirements for cleanliness and quality are becoming more and more specific and specific, so the general traditional antistatic protective film can no longer meet the requirements. For example, the clean room environment recognized by the electronics industry has been upgraded from a general clean room compartment to The clean room level, the lowest level is 10,000 dust fallouts, and the general class has been upgraded to 1,000-grade dust fallout. Correspondingly, the anti-static protective film must be upgraded to meet the high-standard requirements of the working environment, and even create new inspection standards to determine the quality. Whether it meets the standard or not, the structure of traditional antistatic protective film is simple, mainly lies in the original antistatic film, most of the original antistatic film is internally added (or integrally formed), and the original film manufacturer directly integrates conductive materials into the production process It is produced together with plastic particles. This type of antistatic original film is easily affected by humidity and cannot obtain a stable surface resistance value. When the humidity is high, the surface resistance value can reach the standard; when the humidity is low, the surface resistance value It will reflect 10^12~insulator (the value of 10^12 is basically an insulation, which cannot lead to static electricity well), this is because the original film has a certain penetration rate, and the influence caused by the penetration of water vapor in the air cannot be avoided. At the same time, the metal raw materials are not uniformly dispersed, resulting in inconsistent local surface resistance. First, the capacity of the reactor used to produce the original film is calculated in tons, and the automatic production mode is adopted, so it is already difficult to evenly disperse the metal additives. , the original film process needs to be biaxially stretched, and it is impossible to control the accumulation of metal additives on the surface layer, so there will be a phenomenon that the resistance value of the original film cannot be detected during testing. According to the measured surface resistance value, it is about 10^10~10^11 , suitable for Class 10,000 clean room

Images