Production process of blister packaging
1: Mold making and processing: According to the requirements or sample specifications, first make a plastic mold. Under normal conditions, gypsum is used to make plastic packaging molds, but wood carving and metal carving products can also be used as molds. After that, let it dry completely or dry naturally, and then according to the specific conditions of the product surface, use 1-2 mm drills to drill many small holes in the low recesses that do not affect the product packaging shape. If it is a box or the like , Also have to drill some small holes in the four perimeters, in order to suck out the air during plastic production, after the mold drilled the hole, you have to harden the gypsum mold, the hardening method is soaked with concentrated alum saturated solution After drying. 
2: After the mold processing is completely dry, put the mold into the upper iron plate of the vacuum chamber, and then load the plastic sheet into the appropriate size according to the mold size, and then place this sheet in the heated wooden cabinet to completely fix it. Then, the wooden cabinet and the plastic sheet are placed on a constant temperature furnace for softening treatment.
3: Put the softened plastic piece together with the wooden cabinet in the vacuum chamber, activate the suction switch, and suck the air in the vacuum chamber clean. After the plastic piece is cooled, the same concave packaging or process mold as the mold is obtained.
4: Blister packaging and finishing; trimming and finishing of the produced product is finished product, and it can be sold after packaging.