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Do you understand the thermoforming process of blister packaging?

First, the mold needs to be made. According to the requirements or sample specifications, a vacuum forming mold is made. Under normal conditions, plaster is used to make the vacuum forming packaging mold. After the plaster mold is made, it is allowed to dry naturally or baked until completely dry. Then, according to the specific situation of the concave and convex surface of the product, many small holes are drilled with a 1-2 mm drill bit in the low concave areas that do not affect the appearance of the product packaging. If it is a product such as a packaging box, some small holes must also be drilled on the edges of the four sides to facilitate the extraction of air during the production of vacuum packaging. After the holes are drilled in the mold, the plaster mold must be hardened. The hardening method is to soak it in a saturated solution of concentrated alum and then let it dry.

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