| 摘要 |
PROBLEM TO BE SOLVED: To prevent, in the molding of a double molded item by means of a blow molding machine, a interference to an outer layer parison by a cut part of an inner layer parison, and obtain a firm seal surface. SOLUTION: In the device for cutting and pinching a parson, an inner layer parison is delivered from a crosshead and the lower part thereof is pinched and an outer layer parison is delivered farther than the inner layer parison so that the lower part of the outer layer parison is pinched by means of a die to form a double molded item. In this case, a blade part 26 of each of a pair of pinch blades 15, which pinches and cuts off the lower part of the inner layer parison for sealing, is formed into a V-shape and a seal groove 28 is provided on the inner side of the blade part 26 to obtain a seal surface 27 and a parison clearance groove is provided on the inner side of the seal groove 28. |
