Transfer Gap Coating Method
A coating method and transfer technology, applied in the coating field, can solve the problems of easy failure of the slurry roller and difficult speed control of the system, and achieve the effects of easy control, reduction of failures, and uniform thickness
Active Publication Date: 2015-12-02
SHENZHEN HAONENG TECH
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Problems solved by technology
Such frequent adjustment of the speed will cause the slurry roller to break down easily, and the control system is difficult to adjust the speed in time, which cannot solve the problem that the front of the coating will bulge and form a special-shaped coating.
Method used
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Embodiment Construction
[0017] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.
[0018] The most critical idea of the present invention is: scrape off the slurry with a set thickness on the slurry layer to form a depression, and the depression can fill the excess slurry at the initial position of the slurry layer coating without too much The slurry is brought to the substrate to ensure uniform thickness of the coating on the substrate.
[0019] Please refer to image 3 , a transfer type gap coating method, which is applied in a transfer type gap coating system, the method comprises the steps of:
[0020] S01, feeding treatment, preparing the slurry so that the slurry contacts the slurry roller, and rotating the slurry roller at a constant speed so that the side wall of the slurry roller is covered with slurry to form a slurry layer;
[0...
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The invention discloses a transfer gap coating method which is applied to a transfer gap coating system. The method includes the following steps that firstly, feeding treatment is conducted, wherein paste is prepared and makes contact with a paste roller, the paste roller is rotated at a constant rotating speed, so that the side wall of the paste roller is coated with the paste, and a paste layer is formed; secondly, the paste layer is pretreated, wherein a designated cutting portion is selected from the paste layer and the paste of the set thickness is scraped away from the cutting portion, so that a first recessed portion is formed; thirdly, coating treatment is conducted, wherein a coating start position is set on a substrate to be coated, when the first recessed portion of the paste layer is moved so as to directly face the coating start position, the substrate to be coated makes contact with the paste layer, and the substrate to be coated is coated along with rotation of the paste roller until the substrate is coated by the required length. According to the method, control is convenient, the coating thickness is even, and uniformity is good.
Description
technical field [0001] The invention relates to a coating method, in particular to a transfer type gap coating method. Background technique [0002] Coating is an indispensable process in the production process of lithium-ion batteries, and it is also a key process that directly affects various performances such as battery safety, capacity, and consistency. Coating is to apply the prepared paste-like viscous slurry evenly, continuously or intermittently on the substrate to ensure the consistency of thickness at each coating position and control the coating thickness within the tolerance range required by the process . Different coating systems are set up for the coating method, and the transfer gap coating system is one of them. [0003] Transfer gap coating systems in the prior art, such as figure 1 Shown, comprise the slurry roll 1 of surface adhesion slurry, the doctor blade 2 that removes excess slurry on the slurry roll 1 and the transfer roll 3 that is wound with su...
Claims
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IPC IPC(8): B05D1/28B05C11/02B05C1/08
Inventor 陈锐程建军苏建贵
Owner SHENZHEN HAONENG TECH