Loading patent…
AssigneeDai Nippon Insatsu Kabushiki Kaisha
InventorsKeiji Hanamoto, Fumio Takagi
Estimating the term…
A strip-like pattern sheet has a plurality of patterns and register marks spaced apart from each other by a predetermined distance in its longitudinal direction. The pattern sheet is transported from a supply roll to a take-up roll in such a way that it covers the opening of a female mold. At the upper stream of the female mold, the register marks are detected so that a pattern-sheet-holding-and-transferring means holds the pattern sheet at a predetermined position and heats it. The pattern sheet is displaced by one pitch so as to cover the opening of the female mold. The softened pattern sheet is pressed by a compressed air against the cavity surface of the female mold with the cavity being evacuated. Thereafter the holding-and-transferring means is returned to its initial position and the female and male molds are mated so that molten resin is injected into the molding cavity defined between the female and male molds so that a pattern is imprinted on the surface of a molded article or finished product. The pattern may be imprinted or transferred in an efficient manner and the precise registration between the pattern and the surface of the molded article or finished product can be attained.
A method for molding an article by injection molding while simultaneously imprinting on or transferring onto the molded article a pattern on a continuous pattern sheet, wherein, prior to the injection of molten plastic material, a softened pattern sheet is pre-molded by pressing said pattern sheet under an air pressure against the cavity surface of a female mold, and wherein the molten plastic material is injected from a male mold into the cavity defined between said male and female molds mated together with each other to integrate the molded article with the pattern on said pattern sheet, said method comprising the steps of:
Dependencies are inferred from the claim text.