Antistatic macromolecule protective film and production method thereof

Abstract

The invention provides an antistatic macromolecule protective film which comprises an antistatic original film and a release film, wherein the antistatic original film is an external coating type antistatic original film; each of the upper layer and the lower layer of the original film is coated with an external coating; combination of the external coating type antistatic original film and an antistatic adhesive is the main reason for improving the antistatic effect of an antistatic adhesive layer, which is the largest breakthrough on research and development; the condition that the base material texture has certain degree of influence on the conductivity of the adhesive layer is judged; the resistance value of the surface of the adhesive layer is successfully decreased from (10<10>-10<11>) to (10<6>-10<9>); the antistatic original film is coated with the antistatic adhesive layer, and is combined with the release film together; the adhesive in the antistatic adhesive layer is added with a metallic antistatic agent; the antistatic agent adopts the lithium antistatic agent; the metallic lithium is large in electric charge density, has low possibility of being polarized, is high in stability, and can be mixed with the adhesive to form a good conductive grid; the antistatic adhesive layer and one external coating of the antistatic original film are combined together through an enhanced adhesion layer.

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. Correspondingl...

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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

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