According to the different diameters of the aluminum-plastic combination caps for oral liquid, products will be produced in different sizes such as 20, 15, and 13 (in mm). Aluminum caps generally use double coated aluminum alloy plates as raw materials. During the production process, the punching machine drives the cutting ring grinding tool for stamping. Depending on the different production process plans, the two processes of punching and hot pressing can also be combined together. This production process can ensure the accuracy of the positioning of the die cut back cover, and also remove unnecessary transmission mechanisms in this process flow. It can save production space and improve productivity. In the punching process of aluminum-plastic cover production, the die-cutting knife in the production equipment is divided into two parts: a male mold and a female mold. The female mold is fixed and when the aluminum-plastic film is sandwiched between the two molds. Move the male model up. By relying on the squeezing of the yin and yang molds, the aluminum-plastic film is punched out of the desired shape. This method can effectively reduce the wear of mold knives. Reduce the frequency of mold knife replacement. But this method also has its drawbacks, as the cover cut by this method is not as neat as the edge of the cover cut by the paper cutting process. In the subsequent hot pressing process, the resistance heating method is used for production. The resistance heating method can effectively simplify the structure of the hot pressing device. To make the device economical and practical, the resistance wire heating method is used for hot pressing operation in this production process. Another advantage of this method is that the structure of the resistance wire heating device can be changed according to the shape of the lid stitching area, which is very convenient. Compared with traditional molding methods, it can save many tedious steps, simplify the production process, improve productivity, and enhance economic benefits.