Corona treatment device for film preparation

Abstract

The invention relates to the technical field of film preparation, and discloses a corona treatment device for film preparation. A corona device is fixedly mounted at the position, above guide rollers, of a machine body; a position-limiting groove is formed in the bottom of the corona device; a rotating shaft is movably mounted in the position-limiting groove; sliding grooves are uniformly formed in the outer ring of the rotating shaft; electrodes are movably connected in the sliding grooves in a sleeving manner; isolation devices are movably mounted at the two sides of the machine body and positioned at the bottom of the corona device; each of the isolation devices consists of a push head close to the middle of the machine body and a corrugated pipe with an opening in the top; heat dissipation grooves are uniformly formed in the outer ring of a roller; magnetic clamping heads are uniformly and fixedly mounted at the outer rings of the heat dissipation grooves; dielectric plates are uniformly and fixedly connected to the outer sides of the magnetic clamping heads in a sleeving manner; an adjusting device is fixedly mounted in the middle of the machine body and positioned at the bottom of the roller; and transmission rollers are uniformly and movably mounted at the bottom of an adjusting groove. Through the design of the corona structure and the roller and the cooperation of the mechanisms acting together, the corona effect is improved and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of film preparation, in particular to a corona treatment device for film preparation. Background technique [0002] Due to the low surface tension of the thin film, it is necessary to increase the adhesion of the surface through an additional electric shock effect. The commonly used electric shock equipment is a corona treatment machine, which is equipped with a set of electrodes and installed at its bottom. The roller, when the film passes through the roller, it will be subjected to the corona effect of the electrode. The roller is provided with a dielectric and grounded, so that the arc can be avoided. Although the existing corona treatment machine can already A good corona effect has been achieved, but there are still some shortcomings: [0003] When using the electrode for corona, as long as the electrode conduction is ensured, a corona will be formed between the bottom of the electrode and the dielectr...

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Problems solved by technology

[0003] When using the electrode for corona, as long as the electrode conduction is ensured, a corona will be formed between the bottom of the electrode and the dielectric, and the width of the film subjected to corona treatment must be smaller than the width of the roller, which will cause a gap on both sides of the film. The position of corona air discharge is formed, and at the same time, different thin films of corona will also form different air discharge situations, and a large amount of ozone will be released during corona treatment, but only an appropriate amount of ozone can benefit Too much or too little corona of the film will cause the corona effect to deteriorate, and the opening size of the electrode exhaust valve is not easy to control the amount of ozone required by the film, so the effect of corona treatment on high-quality films is limited. unable to achieve the best;

[0004] At the same time, during the process of corona treatment using a corona treatment machine, the loss of electrodes and dielectrics is very large. Once a local problem occurs, it needs to be replaced as a whole, which is troublesome, and the corona treatment parts are concentrated in the The middle position, so that the dielectric near the middle position will oxidize and lose faster, and the dielectric itself is not very cheap, which leads to its short service life and high cost, which is not conducive to the high efficiency of corona

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