METHOD FOR MOLDING RESIN MOLDING

• Main Author: ICHIHARA YOHEI
• Format: Patent
• Language: English; Japanese
• Published: 01.06.2017
• 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

PROBLEM TO BE SOLVED: To provide a method for molding a resin molding that obtains a resin molding of which a surface having a stripe-like pattern of a base material 2 formed is covered with a surface layer having visible light ray transmissivity, and prevents deformation of the strip-like pattern on the surface of the base material 2 when the surface layer is injection-molded.SOLUTION: A method for molding a resin molding includes: forming a cavity 13 for surface layer formation on the surface side of a base material 2; injecting a resin material into the cavity 13 in a direction A of extension of a stripe-like pattern formed of a large number of recessed grooves 4a; and fluidizing the resin material in the same direction as the extension direction and filling the cavity 13 with the injected resin material to form the surface layer.SELECTED DRAWING: Figure 4 【課題】基材２の筋状模様が形成された表面が可視光線透過性を有する表層で覆われた樹脂成形品を得る。表層を射出成形したときに基材２の表面の筋状模様が崩れることを防止する。【解決手段】基材２の表面側に表層成形用のキャビティ１３を形成し、樹脂材料をキャビティ１３に対して、多数の凹溝４ａよりなる筋状模様の延びる方向Ａに射出し、同方向に流動させてキャビティ１３に充填することによって上記表層を成形する。【選択図】図４