| 摘要 |
PURPOSE:To provide a long-sized resin product by blow molding without raising the factory building and without making uneven wall thickness and detective molding. CONSTITUTION:Both a cross head 3 for molding thermoplastic resin into a parison P and a mold 5 are crosswise placed. The parison is molded into the shape of a product by the mold 5 by blowing air. Hot air 60 is injected from the downside toward the parison P extruded through the cross head 3. The parison is introduced into the mold 5 by horizontally holding the parison P while the same is thermally insulated. Hot air 60 is preferably injected upward toward the oblique front for the parison P, so that the parison P is smoothly sent forward. |
