| 摘要 |
PROBLEM TO BE SOLVED: To eliminate an unstable situation which occasionally occurs in the core formation method of conventional polymer materials where it is difficult to separate a member which does not accomplish cores from a member which accomplishes cores after fluid polymer material which is heat-melted within material pipe is impregnated into a former, further, where it is also quite difficult to control a proportional of a foaming agent and a connection of a non formation core zone to need. SOLUTION: In this invention, a polymer material 13 in a material pipe is melted by a heater 12 being attached so that it surrounds the outside of a transportation screw 14, further, whether a high-pressure gas delivery operation of a pressurization pump or a high-pressure gas conservation cylinder is performed, is controlled and forming bubble nuclei or non-bubble nuclei in a fluid cylindrical polymer material zone is controlled by the set-up of a gas transport pipe 16 in the transportation screw 14 and its connection with a fine bubble generating part 18 at a tip of the transportation screw 14. COPYRIGHT: (C)2005,JPO&NCIPI |
