Molding process plastic molding , plastic molded products , optical scanning device and having the plastic molding

摘要

PROBLEM TO BE SOLVED: To increase the shape precision of a transfer surface of thin-walled plastics molded object.;SOLUTION: The plastics molded object 10 includes a transfer surface formed by transferring an surface to be transferred through generating a resin pressure in the internal resin of a mold cavity. In addition, the plastics molded object 10 has one or two opposed transfer surfaces 11 and 12, and the thickness "a" of the molded object 10, in the perpendicular direction to the transfer surfaces 11 and 12, with regard to the perpendicular sectional shape 14 to the transfer surfaces 11 and 12 and the thickness "b" of the molded object in the parallel direction with the transfer surface, can satisfy the relationship of a/b1. Further, on the area other than the transfer surfaces 11 and 12, at least each one of recessed imperfect transfer part 21 and projecting imperfect transfer part 22 are formed by imperfectly transferring the cavity shape of the mold.;COPYRIGHT: (C)2011,JPO&INPIT