A single compound preparation method for double-sided coating of aluminum-plastic film for power lithium battery

Abstract

The invention discloses a double-sided coating single-composite preparation method for aluminum-plastic films of power lithium batteries, which relates to the technical field of coating methods. Its preparation method is as follows: the aluminum foil to be coated is glued on the first surface by gravure coating, and then glued on the second surface by quantitative extrusion coating, and the material after double-sided coating enters the suspension oven. Non-contact drying is carried out, and the cured adhesive film and the double-sided lamination substrate are combined on-line five layers to realize double-sided coating and double-sided lamination at one time. It can not only solve the cumbersome and high manufacturing cost problems of double coating and double winding in the aluminum-plastic film coating process, but also solve the problem of long production line due to double coating, double compounding and single winding. The disadvantages of large area occupation and unstable quality can effectively reduce the cumbersome operation, save drying energy, and save land space. At the same time, the process is relatively simple, which is conducive to stable quality.

Description

Technical field: [0001] The invention relates to the technical field of coating methods, in particular to a double-sided coating single composite preparation method for power lithium battery packaging aluminum plastic film. Background technique: [0002] At present, the double-sided coating method in the coating industry mainly adopts single-sided coating, drying, composite winding, and second-side coating, drying, composite winding, or single-sided coating, drying, composite winding, and online second-side coating. Dry compound method for preparation. The first preparation method is more traditional, the operation is cumbersome, the product realization cycle is longer, and because the operation process is complicated, the product yield rate and manufacturing cost are higher; the second preparation method is greatly improved compared with the first method, and the product realization cycle is shorter , The cumbersome operation is relatively small, but the entire machine needs tw...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a single compound preparation method of double-sided coating of aluminum-plastic film for power lithium batteries, which can not only solve the cumbersomeness of double-coating and double-winding during the coating process of aluminum-plastic film and the high cost of manufacturing The problem of cost can also solve the disadvantages of long production line, large area occupation and unstable quality due to double coating, double compounding and single winding, effectively reducing the cumbersome operation, saving drying energy, and saving land space. At the same time, the process is relatively simple, which is conducive to the stability of quality

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