Since the beginning of manufacturing products, human beings have been inseparable from packaging materials, from the most traditional paper packaging to wood packaging, to later foam packaging, metal packaging, plastic packaging, etc. In fact, the purpose of packaging is very simple, which is to solve the protection problems of products in the production process, transportation process, sales and use process. With the progress of society and the increasing demand of human beings, packaging not only needs to solve the protection problems of products, but may also put forward more aesthetic issues of packaging. Today we will introduce a case study of vacuum packaging design.
1: Mold making and processing: According to the requirements or sample specifications, the first step is to make the vacuum forming mold. Generally, gypsum is used to make the vacuum forming packaging mold, but wood carving and metal carving products can also be used as molds. After the gypsum mold is made, let it dry naturally or completely. Then, according to the specific situation of the product surface convexity and concavity, use 1-2 mm drill holes to drill many small holes in the low concave areas that do not affect the product packaging appearance. If it is a packaging box or other product, some small holes need to be drilled around the edges so that the air can be extracted during vacuum forming production. After drilling the holes in the mold, the gypsum mold needs to be hardened. The hardening treatment method is to soak it in concentrated alum saturated solution and air dry it.
2: After the mold is completely dried, the mold is placed on the upper iron plate of the vacuum chamber. Then, according to the size of the mold, the plastic sheet is loaded into the appropriate specification size. Then, the sheet is placed in a heated wooden cabinet to be completely fixed. Finally, the wooden cabinet and the plastic sheet are placed on a constant temperature furnace for softening treatment.
3: Place the softened plastic sheet together with the wooden cabinet in a vacuum chamber, turn on the suction switch, and clean the air in the vacuum chamber. After the plastic sheet cools down, the same concave packaging or process mold as the mold is obtained. 4: Blister packaging sorting: The finished product is produced by trimming and sorting the edges, and can be sold after packaging.
