Transformer blister packaging /Vacuum forming, called blistering, is a plastic processing technology. The main principle is to heat and soften the flat hard plastic sheet, absorb it on the surface of the mold by vacuum, and cool it before forming. It is mainly divided into two categories: thick film and thin film. It is widely used in automobile accessories, lighting, advertising, decoration, large machinery shell, display, space, large household appliances, bathroom and other industries.

Due to the different uses of blister trays, there is no uniform requirement on their overall shape in the market. Producers and users can produce and design the shape of blister trays according to their needs. The only requirement for the shape of the blister tray is the material thickness, which is customized.

The so-called internal structure of the blister tray refers to the structure used to hold items in the tray, such as the round chassis of the egg tray and the grids with different shapes of electronic products. The modeling design of these structures must be designed and made according to the requirements of the buyer, because the produced pallet can hold the buyer's products or production originals to a large extent. In addition, there are the design of taking position and overhead position on both sides. With the reasonable distribution design under all the above conditions, the tray produced is the blister tray that meets the specifications.