The die-cutting part of the self-adhesive die-cutting machine is the core of the die-cutting machine, and the die-cutting plate and die-cutting base plate are the basic components. To ensure high-quality die-cutting, the key is to make a die-cutting plate. Among them, opening connection points and applying sponge adhesive strips are processes that can reflect the level of production. The opening point is a small opening of Lekai adhesive with a certain width at the edge of the die-cutting blade, which connects the cardboard box and waste locally during the die-cutting process and will not scatter during the die-cutting process. Originally, it was mostly done by operators using their own tools to open the connecting points, which had many drawbacks, such as different sizes of the connecting points and deformation of the cutting edge during the opening of the connecting points. Nowadays, many manufacturers have used specialized connection point openers. Its working principle is to use grinding wheels of different thicknesses to make connecting points on the die cutting knife based on the different thicknesses of paper for wine packaging. The connection points produced in this way are evenly sized, do not harm the knife, and have a moderate depth. In general, paper with a quantitative range of 200-250g/㎡ uses a 0.3mm thick grinding wheel, paper with a quantitative range of 250-350g/㎡ uses a 0.4mm grinding wheel, and paper with a quantitative range of 200-250g/㎡ uses a 0.8mm grinding wheel. Regardless of the size of the connection point, it should be published in a hidden area of the packaging box to avoid affecting the aesthetics.