| 摘要 |
PURPOSE:To prevent the generation of a defect such as a bubble in a molded product forming a comparatively complicated from, by a method wherein casting ports for mixed liquid resin are provided respectively to the lowermost part of an air gap and the independent insular bottom of a closed mold for molding. CONSTITUTION:For example, a product having an undercut partly is molded by a molding device. A closed mold for molding is constituted of a top and bottom forces 17, 18 and a core mold 19. Then casting ports 22 casting mixed liquid resin are formed on the lowermost parts 21-1, 21-3 of a gap having a form of a product and an independent insular bottom 21-2. Then air removal holes 23 of a fine diameter discharging air of the inside of an air gap 21 are formed on the uppermost parts 21-4, 21-6 of the air gap 21 and the independent insular upper part 21-5. Then the casting port 22 and air removal hole 23 are in a positional relation where they deviate relatively from each other. Then the mixed liquid resin obtained by mixing continuously and quantitatively with a curing agent through the casting port 22. In this instance, neither a turbulent flow in the cast mixed liquid resin nor the inclusion of air within the air gap 21 are generated. |
