Diaphragm coating device and diaphragm coating method
A technology for coating devices and diaphragms, which is applied to devices, coatings, and electrical components that apply liquid to the surface.
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Embodiment 1
[0056] This embodiment provides a diaphragm coating device, the diaphragm coating device such as figure 1 As shown, it includes a preheating device 2, a first coating device 3, a second coating device 4 (the second coating device 4 also has a back roller 5), a third coating device 6 and a post-treatment Device 7.
[0057] Wherein, the preheating device 2 is a preheating oven, the first coating device 3 is a micro-gravure coating device, the second coating device 4 is an extrusion coating device, and the third coating device 6 is a wire rod coating device, and the post-processing device 7 is a drying oven. In addition, the coating head of the first coating device 3 and the coating head of the second coating device 4 are located on one side of the base film 8, and the coating head of the third coating device 6 is located on the other side of the base film 8.
[0058] The diaphragm coating device also includes a transmission device for transmitting the base film 8 to be processed. T...
Embodiment 2
[0063] This embodiment provides a method for coating a diaphragm using the diaphragm coating device of embodiment 1, which is specifically:
[0064] After the base film 8 (PE film) is preheated at 20°C through the preheating device 2, it passes through the first coating device 3 but does not turn on the first coating device 3 (that is, the first coating device is not used for coating), The adhesive coating (aqueous PVDF layer) is extruded and coated on one side of the base film 8 by the second coating device 4, and the wire rod is coated and bonded on the other side of the base film 8 by the third coating device 6 The coating (aqueous PVDF layer) is then dried by the post-processing device 7 at 20° C. to obtain a separator. Among them, the tension of the coating head region of the second coating device 4 and the third coating device 6 are both 5N.
[0065] The diaphragm of this embodiment has undergone both extrusion coating and wire rod coating, and has a layer of coating on both...
Embodiment 3
[0067] After the base film 8 (PE film) is preheated by the preheating device 2 at 70°C, the first coating device 3 is used for micro-gravure coating of alumina coating, and the second coating device 4 The bond coat (aqueous PVDF layer) is extrusion coated on the coating, passes through the third coating device 6 but does not turn on the third coating device 6 (that is, does not use the third coating device for coating), and then passes through post-processing The device 7 is dried at 70°C to obtain a diaphragm. Among them, the tension of the coating head regions of the first coating device 3 and the second coating device 4 are both 35N.
[0068] The diaphragm of this embodiment has undergone both microgravure coating and extrusion coating, and has two layers of coating on one side of the base film 8.
PUM
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Abstract
Description
Claims
Application Information
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