| 摘要 |
PURPOSE:To remove bubbles generating between fusion bonded surfaces, by a method wherein at one of divided molds, a plate part of which press part is movable from near a hollow room to the outside direction of a divided mold, and also which is able to press fusion bonded part of a parison cooperating with the other divided mold, is formed. CONSTITUTION:A concaved place 13 is formed at the confronting surface of the divided mold 11 which confronts mold joining surfaces 19, 19 of the divided mold 10 and opens to the surfaces 19, 19. A press means which is provided at the concaved place 13 and discharges bubbles 20 which exist between fusion bonded surfaces 16, 17 toward far away direction from the hollow room 15 and press and fusion bond the fusion bonded surface. are composed of the press plate part 21 and rollers 22 which are drived slidely contacting to the plate part 21. When the rollers 22 are driven toward the free end part of the plate part slidely contacting to the plate parts 21, the plate width of the fusion bonded surfaces 156, 17 are gradually nallowed, and bubbles 20 which exist between the fusion bonded surfaces 16, 17 gradually move outward and the fusion bonded parts 44, 44 are pressed and fusion bonded and adhered together with bubbles 20 are discharged by the action of the plate parts 21 and rollers 22.
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