Structural design of plastic packaging containers

4. The local structure of the container

Hinge: Made of polypropylene plastic with lid and packaging container, it can be molded once by injection molding the lid, box and film hinge into a chain structure. The thickness of the hinge varies with the s.......

Gravure printing and letterpress printing (3)

4. Once the overprinting machine has been adjusted, it can be overprinted. First, use the manual adjustment button to register the plate and then adjust the computer. The longitudinal error of the overlay is adjusted by tension, and the lateral error is regulated .......