THE METHOD OF COATING ON THE INSIDE OF HE MOLD CONSTRUCTION AND THE COATED INJECTION MOLDING EQUIPMENT

摘要

The present invention relates to a method for liquid flow coating on the inside of a flow path of a mold, which improves flowability of a resin by coating silicon oxide film on the inside of whole channel of a flow path of a mold, and especially provides a fundamental solution of preventing contamination caused by stay of remaining resin by reducing friction coefficient with a resin in a pipe. The liquid flow coating method comprises the steps of: forming a silicon oxide-fluorine-based coating solution; inserting an air gun hose into an inlet of a mold of an injection molding device to pump the coating solution into the inside of a flow path of the mold to flow into the flow path of the mold to coating the coating solution on the flow path of the mold; and heating the mold to dry the coating solution to form a coated film.