MANUFACTURING METHOD FOR MOLDED PRODUCTS

• Main Authors: YAMAZAKI YOSHIHIRO, MINAGAWA YUTA, YOKOI SHINJI
• Format: Patent
• Language: English; Japanese
• Published: 09.05.2022
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a method for manufacturing molded products with improved dimensional accuracy.SOLUTION: A method of producing a molded product includes the following steps of: placing a molten resin sheet 2 between a first mold 4 and a second mold 5; compressing an excess thick-walled portion 221 of the molten resin sheet 2 by the first mold 4 and the second mold 5 through mold clamping; and applying at least one of negative pressure from the first mold 4 side and positive pressure from the second mold 5 side to shape the molten resin sheet 2 against the first mold 4 side.SELECTED DRAWING: Figure 5 【課題】寸法精度を向上させた成形体の製造方法を提供する。【解決手段】成形体の製造方法は、第一金型４及び第二金型５の間に溶融樹脂シート２を配置する工程と、型締めにより溶融樹脂シート２の余剰厚肉部２２１を第一金型４及び第二金型５により圧縮する工程と、第一金型４側からの負圧及び第二金型５側からの正圧の少なくとも一方を加えて溶融樹脂シート２を第一金型４側に賦形する工程と、を含む。【選択図】図５