Mold making and processing: according to the requirements or sample specifications, the first step is to make a good blister mold. Generally, gypsum is used to make the blister packaging mold. However, Dongguan packaging material also uses wood carving and metal carving products as the mold. After the gypsum mold is made, first let it be naturally dry or dry, and then use 1-2 mm drill according to the specific conditions of the convex and concave surface of the product Many small holes should be drilled in the concave places that do not affect the packaging pattern of the products. If it is a packaging box or other products, some small holes should be drilled around the four sides, so that the air can be extracted during the blister production. After the mold is drilled, the gypsum mold must be hardened. The hardening treatment method is to soak in concentrated alum saturated solution and dry in the air.
2. After the mold is dry, put the mold into the iron plate on the upper layer of the vacuum chamber, and then load the plastic sheet into the applicable size according to the size of the mold, and then put the sheet into the heating wood cabinet to fix it, and then put the wood cabinet and the plastic sheet on the constant temperature furnace for softening treatment.
3. Put the softened plastic sheet together with the wooden cabinet in the vacuum chamber, turn on the air suction switch to suck the air in the vacuum chamber. After the plastic sheet is cooled, the concave packaging or process mold with the same mold can be obtained.
4. Blister packaging and finishing; trimming and finishing the produced products is the finished products, which can be sold after packaging.
Source: Jiangmen packaging materials http://www.hotzzi.com/