Aluminum-plastic film aluminum foil passivation technology for lithium battery packaging
An aluminum-plastic film and lithium battery technology, applied in battery pack components, applications, circuits, etc., can solve problems such as decreased adhesion performance or delamination, and achieve enhanced interlayer adhesion, improved appearance quality and service life. , Solve the effect of serious decline in bonding performance or delamination
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Embodiment 1
[0026] Dilute the existing passivation solution and the diluent at a ratio of 4:9 to obtain a finished product of the passivation solution, and apply the finished product of the passivation solution to the cleaned substrate through a microgravure roller with a mesh number of 300 in a 25°C environment. On the surface of the aluminum foil with a thickness of 40 μm, the aluminum foil coated with the passivation solution finished product was placed in a 50 °C oven, and the aluminum foil was run in the drying tunnel at a speed of 10 m / min to maintain the tension and flatness of the aluminum foil. Passivation layer on the surface of aluminum foil;
[0027] One side of the above aluminum foil with passivation layer was coated with polyurethane adhesive with a dry thickness of 3 μm and compounded with a 25 μm PA film, and the other side was coated with a modified polyolefin adhesive with a dry thickness of 4 μm and compounded with a 40 μm CPP film to obtain an aluminum-plastic film for...
Embodiment 2
[0029] Dilute the existing passivation solution and the diluent at a ratio of 2:7 to obtain a finished product of the passivation solution, and apply the above-mentioned passivation solution product to the cleaned substrate through a microgravure roller with a mesh number of 320 in a 30°C environment. On the surface of the aluminum foil with a thickness of 40 μm, the aluminum foil coated with the passivation solution finished product was placed in a 60 ° C oven, and the aluminum foil was run in the drying tunnel at a speed of 10 m / min to maintain the tension and flatness of the aluminum foil to obtain a dry thickness of 0.2 μm. Passivation layer on the surface of aluminum foil;
[0030] One side of the above aluminum foil with passivation layer is coated with a 4 μm dry thickness polyurethane adhesive compound 25 μm PA film, and the other side is coated with a 4 μm dry thickness modified polyolefin adhesive compound 40 μm CPP film to obtain an aluminum plastic film for lithium ...
Embodiment 3
[0032] Dilute the existing passivation solution and the diluent at a ratio of 1:6 to obtain a finished product of the passivation solution, and apply the finished product of the passivation solution to the cleaned substrate through a microgravure roller with a mesh number of 350 in a 35°C environment. On the surface of the aluminum foil with a thickness of 40 μm, the aluminum foil coated with the passivation solution finished product was placed in an oven at 80 °C, and the aluminum foil was run in the drying tunnel at a speed of 10 m / min to maintain the tension and flatness of the aluminum foil to obtain a dry thickness of 0.5 μm. Passivation layer on the surface of aluminum foil;
[0033] One side of the above aluminum foil with passivation layer is coated with a 4 μm dry thickness polyurethane adhesive compound 25 μm PA film, and the other side is coated with a 4 μm dry thickness modified polyolefin adhesive compound 40 μm CPP film to obtain an aluminum plastic film for lithi...
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