| 摘要 |
Packaging material is embossed by passing between two fine teethed rotating rolls, which are pressed against one another. Both the rolls have fine pyramidal teeth on them. The teeth are designed and manufactured such that the apex angle of the pyramids of one of the rolls is different from the apex angle of the pyramid of the other roll. This differential angle of the two pyramids will provide operational clearance for each teeth and thus reduce the friction between the two rolls and increase the flexibility of the system in the practical dynamic condition of the embossing in the packaging industry. This will also function as one or more variable parameter to vary the quality and texture of embossing. |
