In keeping with the development of the aluminum foil, the aluminum foil manufacturing procedure specially has the subsequent 3 techniques: Lap rolling method, strip rolling approach and deposition.
1. Lap rolling method
Lap rolling method is adopt multilayer block lap rolling technique, it's far the technique of making foul merchandise in double mill periods. The luminum foil synthetic by using lap rolling technique is at risk of compressive, and flexural rolling minimal thickness is 0.01-zero.02 mm, and to the rolling foil merchandise, the period is short, the production performance is low. At present, the lap rolling approach has not often used.
2. Strip kind rolling technique
Strip kind rolling technique is the primary technique of the aluminum foil manufacturing process, the amount of aluminum foil manufactured by using this kind of approach have accounted for greater than 90%. It makes use of the plate after warm rolling or soften non-stop casting and rolling plate as aluminum foil raw meterial. Aluminum foil raw cloth on the foil mill generally after five or 6 times of cold rolled into foil product, theer are not annealing within the process, usually at the quit of the rolling pass by means of two or greater layers rolling. The primary characteristics of strip type rolling approach is high performance (accelerate to 2500 m/min), exact surface excellent, uniform thickness. Thethinnest thickness of produced aluminum foil with the aid of this technique is zero.0.5 mm, width is 2000 mm.
3. Deposition
Deposition is a brand new aluminum foil manufacturing manner advanced in latest years. The method can produce extremely-skinny aluminum foil, the minimum thickness is zero.0004 mm. The main technological method is beneath the condition of vacuum, vapor deposition at the plastic film and become aluminium foil. The advantage of this generating approach is can produce a extremely-thin aluminum foil, that is the strip type rolling method can't reach. However, the deposition performance is low and with excessive cost, technical is hard. At gift it has no longer been broadly used.