Blister card packaging refers to heat-sealing the blister on the surface of the paper card with blister oil, which is commonly used in supermarket battery packaging. Its characteristic is that it needs blister sealing equipment to encapsulate the product between the paper card and the blister. The problems that should be paid attention to are: 1. The surface of the paper card must be covered with blister oil (so that it can be thermally bonded with the PVC blister); 2. The blister can only be made of PVC or PETG sheet; 3. Because the blister is only sticky On the surface of the paper card, the packaged product is not easy to be too heavy.