| 摘要 |
PURPOSE: To effectively utilize coating resin without waste by integrating a hollow body having a gas filing hole via a coupling part to form a gas filling hole cover. CONSTITUTION: When a hollow resin molded form is molded by gas filling injection molding, a gas filling hole cover 3 integrated with the form is simultaneously formed. The form is inserted into a mold cavity, and coating resin is injected. In this case, its gas filling hole 8 is sealed by the cover 3, and the resin coated hollow resin molded form is manufactured. The coupling part 5 of this hollow body to the body preferably has a hinge effect utilizing the elasticity of the resin, and the cover 3 is preferably provided at a place so that the hole 8 of the body can be closed by rotating the cover 3 as it is. |
