A mold for injection molding processes and a molding process that uses the mold. The mold has, at at least one part of the surface of its cavity raised portions which are longitudinally extended, are arranged side by side and are oriented substantially in the direction of the flow of the melted plastic material that is injected. During the process, the surface of the cavity of the mold is kept at a temperature that is lower than the glass transition temperature, in the case of molding of plastic material constituted by amorphous polymers, and lower than the crystallization temperature, in the case of molding of plastic material constituted by semicrystalline polymers.

The present disclosure provides a marbled molded product obtained by injection-molding, in a mold cavity, a mixture including: a thermoplastic resin including one selected from the group of polycarbonate, acrylonitrile-butadiene-styrene, polybutylene terephthalate, polypropylene, and combinations thereof; and fine pigment particles, where a pattern forming a texture is formed on the surface of the injection-molded product. The present disclosure also provides a system for evaluating a marble color effect of a marbled molded product, the system including: a light source unit, an image-capturing unit, an image processing unit and an evaluation factor determination unit.

A one-piece component comprising a tetrahedral-octahedral honeycomb lattice is disclosed herein, along with a mold, a system and methods of making the component. A one-piece component comprising a truncated tetrahedral-octahedral honeycomb lattice also is disclosed, along with corresponding molds, systems and methods.

An electronic device is provided. The electronic device includes a housing; and a coating layer formed on at least a portion of a surface of the housing, wherein the coating layer comprises a paint, the paint including a one-component acrylate-based paint having a property of being cured by an ultraviolet (UV) light, or a one-component or two-component paint containing acryl and urethane and having a property of being cured by heat, wherein the coating layer has a pattern structure including an uneven pattern through laser processing on a portion of a coating film formed by applying the paint, and wherein two or more regions having different glossiness may exist on the surface of the housing by the pattern structure of the coating layer.

To provide a method for manufacturing an optical element, which improves the surface precision of the optical surface as well as reducing the birefringence at a low cost. A method for manufacturing an optical element 1090A having optical surfaces 1091 and 1092 and a non-optical surface 1093A that is adjacent to the optical surface 1092 via a ridge by injection molding includes forming the non-optical surface 1093A with a mold surface. The mold surface includes a sink forming area 1095 as a first area having a first surface roughness, and a high transfer area 1094 as a second area having a second surface roughness different from the first surface roughness. The second area is located outside the first area.

The present invention is directed to injection molded articles as well as methods of manufacture of the same. The injection molded article is a helmet cover for a protective helmet, and more particularly a replaceable helmet cover for enhancing the aesthetic outer appearance of a helmet used in military, construction, manufacturing, and/or contact sports such as American football, baseball, lacrosse, hockey, equestrian, skiing, snowboarding, and the like.

The present invention is directed to a mold for forming the cover of a golf ball having a non-planar parting line on its spherical surface.

An injection molding apparatus according to an embodiment is configured to mold a thermoplastic resin into a thick-walled component by injection molding. The injection molding apparatus includes a mold having a cavity and a core; and a controller configured to control an operation of the mold. The controller is capable of performing a filling and pressure holding process of filling the thermoplastic resin between the cavity and the core in a state in which a distance between the cavity and the core is increased, and a cooling and solidifying process of cooling and solidifying the filled thermoplastic resin while pressurizing the filled thermoplastic resin by decreasing the distance between the cavity and the core. The controller stacks the thermoplastic resin by performing an operation set including the filling and pressure holding process and the cooling and solidifying process a plurality of times.

A light flux controlling member includes: a vortex surface having a continuous or stepwise spiral shape; and a plurality of ridges radially disposed around a center of a spiral in the vortex surface. The height of the plurality of ridges decreases toward the center.

A resin member includes: a resin substrate; and a micro-embossed pattern and having a plurality of recesses and a plurality of protrusions. The plurality of protrusions includes: a plurality of first protrusions; and a plurality of second protrusions having a height of from ¼ to ¾ of the height of the first protrusions. A distance between peaks of two adjacent ones of the plurality of protrusions ranges from 100 μm to 500 μm. The number of the minute regions having an angle of inclination of from −10° to 10° with respect to the reference plane ranges from 78% to 95% of the number of all of the minute regions included in the micro-embossed pattern corresponding to the predetermined distance, and the number of the minute regions having an angle of inclination of from −1° to 1° ranges from 25% to 40% of the number of all of the minute regions.