| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a separable seal unit on a cylinder wall simply and surely by a method wherein a mold unit for a cylindrical part is formed by clamping both side rims of a flat blow parison to retain a specified distance between approached opposing planes while the outer wall of the cylindrical part at the forming position of an isolating seal unit for a vessel is formed while regulating the same by the approached opposing planes. SOLUTION: A mold unit 3 for the mold of a blow-molded vessel covers a blow parison 7, expanded partially, so as to become flat and the mold is clamped while biting both side rims of the flat blow parison 7. Then, approached opposing planes 4, approached mutually, are formed on one part of a pair of mold surfaces 3B for a cylindrical unit while a distance between the approached opposing planes 4, 4 upon mold clamping is specified so as to be 0.5-5.0 mm and the outer wall of the cylindrical unit at the forming position of an isolating seal unit for a vessel for medical treatment is formed while regulating the same by the approached opposing planes 4. Upon manufacturing air is blown into the parison 7 through the blow-out port of a supplying head 5, then, a mold unit 2 for mouth unit and the mold unit 3 for cylindrical unit are clamped. As a result, varieties will not be generated in the thickness of the isolating seal unit of the molded vessel.</p> |
