MANUFACTURING PROCESS AND DEVICE FOR SQUARELY CYLINDRICAL CURVED SURFACE CONTAINER, AND SQUARELY CYLINDRICAL CURVED SURFACE CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing process and device for squarely cylindrical curved surface container having each of its side faces been curved three dimensionally, which is neither high in production cost of equipment such as a male pattern nor is spoiled in fanciness, and is stable in container shape without bouncing back at a crease after box making.;SOLUTION: In the manufacturing process and device for the squarely cylindrical curved surface container, a paper or plastic blank 3 is twisted around a cylindrical support 7 to form a cylindrical temporary container 2. Female patterns 30, wherein each inside 30a is corresponding to each side of the cylindrical container and curving three dimensionally, are applied from outward of the cylindrical temporary container 2 by simultaneously allocating to each corresponding side, and driven toward driving directions P for forming. Ridges in left and right of the inside 30a of each female pattern 30 bear chamfered facets.;COPYRIGHT: (C)2004,JPO