MOLD HAVING DIAMOND LIKE CARBON FILM AND MOLDING METHOD USING IT

摘要

PROBLEM TO BE SOLVED: To impart excellent gloss or appearance to a resin molded product or to perform molding with good mold releasability in a state that a resin has good flowability at the time of molding, to perform the molding of a resin like a liquid crystal polymer with good moldability, to perform molding with good moldability at a mold temperature in the vicinity of the melting point of a resin and to perform the insert molding, outsert or hoop molding or laminate molding of a resin and a metal so as to obtain high joining strength. SOLUTION: When a mold for molding a resin, which has a diamond like carbon film on its surface and is characterized in that the ten score average surface roughness Rz thereof is 5μm or below and the surface roughness is below 0.1-above 1.0μm, is used and the melting point of a crystalline resin is set to Tm(°C), the mold is filled with the resin at a mold temperature T of (Tm-95°C)≤T