Patent ID: 9457501
Filing Date: 2016-10-04
CPC Classification: B29C,B29L,Y10T

Claim Text:
1. A method for manufacturing a resin molding, comprising: laminating a plurality of plates to form a cavity and a gate through which resin material is injected into the cavity; injecting the resin material which is comprised of 100 parts by weight of thermoplastic resin and 0.1 to 4 parts by weight of bright material, into the cavity through the gate; hardening the resin material to form the resin molding; and separating the plates to extract the resin molding from the cavity, wherein the plates are formed such that: the resin molding includes a main body having a round-shaped design surface formed with a plurality of rectangular-shaped grooves, the longest groove of which extends in a first direction, the lower limit of the depth of the grooves is set to 0.3 mm and the upper limit of the depth of the grooves is set to 0.5 mm, the gate extends toward a center of the round-shaped design surface and at an angle range of 45°±30° with respect to the first direction, the bright material has the aspect ratio of 30 to 50, and