Blow molding is a plastic processing technique in which flat, rigid plastic sheets are heated until softened, then vacuum‑formed to conform to a mold surface; after cooling, the part takes its final shape. This process is widely used in industries such as plastic packaging, lighting fixtures, advertising, and decorative applications.

　　The main advantages of blister packaging are its ability to conserve raw and auxiliary materials, its light weight, convenient transportation, and excellent sealing performance, all of which meet the requirements of environmentally friendly, green packaging. It can accommodate products of any irregular shape, eliminating the need for additional cushioning materials during packing. The packaged products remain fully visible, with an attractive appearance that enhances their marketability, while also being well-suited for mechanized and automated packaging, facilitating modern management, reducing labor costs, and improving efficiency.

　　Blister packaging

　　Blister packaging products mainly include blister packs, trays, and blister boxes; synonyms also include vacuum covers and blister lids.

　　Blister pack

　　The blister‑forming process is used to mold transparent plastic sheets into specific raised shapes, which are then applied as a protective and decorative cover over the product surface. It is also known as a blister pack, vacuum cover, or plastic face shield. Depending on the type of blister cavity, it can be further classified into single‑cavity blisters, double‑cavity blisters, insert‑card blisters, and suction‑card blisters.

　　Blister box

　　It is a type of blister packaging with a lid and a base; when the base and lid are joined, it is called a hinged blister box, and when they are separate, it is called a top-and-bottom blister box.

　　Blister tray

　　Also known as a plastic inner tray, it is produced by thermoforming a rigid plastic sheet into a molded cavity. The product is placed within this cavity, providing protection and enhancing its visual appeal.

　　Flocked inner tray

　　It is a thermoformed tray made from a special material, with a layer of velvety fabric adhered to the surface of a standard rigid plastic sheet, giving the tray a soft, plush feel and enhancing the perceived quality of the packaged product.

　　Antistatic pallet

　　It is a blister tray made of a special material whose surface resistivity is less than 10¹¹ ohms. It is primarily used as a blister tray for electronic and IT products.

　　Blister molding die

　　In thermoforming production, the molds used vary in cost: plaster molds are the most economical, followed by electroplated copper molds, while aluminum molds are the most expensive. The molds are drilled with small holes to facilitate vacuum suction of the heated thermoplastic sheet, thereby forming the final thermoformed product.