This machine is a rotary cardboard covering equipment, adopts imported frequency converter stepless speed regulation, photoelectric counting and digital display. The surface of the paper biting roller is heat-treated and plated with hard chrome, which has high surface hardness, is not easy to corrode, and is not easy to foam. The work and adjustment design is humanized, the adjustment is simple, and the operation and transportation are convenient. Powerful pressure roller hydraulic pressure, the bottom and surface paper are firmly and smoothly combined, and the product is beautiful and stiff. It can directly enter the next die-cutting process without waiting for the drying time. It is an advanced equipment for the production of various packaging cartons.