Abstract: Provided is a mold part for resin molding and a manufacturing method. A mold part for molding resin includes a base material layer, a design section and uneven sections which abut an inner surface so as to form ventilation sections. The design section has a design surface transferred by a reverse master having an uneven surface. At least the design section out of the base material layer and the design section is formed of a heat resistant material, and the mold part for resin molding is interchangeably attached to the molding tool so that a molding pressure acts in a direction to press the uneven sections against the inner surface of the molding tool at the time of molding the resin molded article.

Abstract: An object of the present invention is to provide a mold for resin molding which ensures ventilation characteristic without requiring an enormous amount of work. The mold for resin molding of the present invention includes: a mold 12; a design layer 16 formed inside the mold 12; and a air permeable interposing layer 22 for forming the design layer 16 on an inner surface of the mold 12. The mold 12 forms a ventilating throughhole 14. The design layer 16 is made of a resin having projections and depressions on the surface, and has a ventilating throughhole 18 formed so as to couple to the ventilating throughhole 14. The air permeable interposing layer 22 is arranged next to the inner surface of the mold 12 so that an inner surface of the design layer 16, the ventilating throughhole 18 of the design layer 16, and the ventilating throughhole 14 of the mold 12 couple to each other.

Abstract: [Summary] [Technical problem] The main object of the present invention is to provide a mold part for resin molding and manufacturing method which can easily change a design on a product surface side without requiring substantial effort and cost and diversify the selection of post-processings on this design surface and are suitably used by being attached to diverse molding tools.

Abstract: A method for forming a convex pattern on a surface of a sheet includes the steps of covering a photosensitive resin film 21 with a masking film 4 having a convex forming area 40 corresponding to a convex pattern to be obtained, exposing the photosensitive resin film 21 to light from an outside of the masking film 4, and removing an unexposed portion of the photosensitive resin film 21 subjected to the exposing step, thereby forming a sheet 2 with an exposed portion 22 left, and the convex forming area 40 of the masking film 4 has a semi-translucent portion 43 and a translucent portion 41 formed in sequence at an outside of a light-shielding portion 42 in order to express a shade in gradation, and a light transmittance increases stepwise from the light-shielding portion 42 toward the translucent portion 41.

Abstract: A method of manufacturing an decoration film includes the steps of forming a semi-finished decoration film formed with a concave-convex pattern on a surface in a method of manufacturing a printing plate including exposure, cleaning, and drying from a photosensitive resin film; and irradiating laser on the concave-convex pattern of the semi-finished decoration film and removing an unnecessary portion to smooth concave-convex parts and/or provide difference in height of a convex part and depth of a concave part of the concave-convex pattern.

Abstract: An object of the present invention is to provide a mold for resin molding which ensures ventilation characteristic without requiring an enormous amount of work. The mold for resin molding of the present invention includes: a mold 12; a design layer 16 formed inside the mold 12; and a air permeable interposing layer 22 for forming the design layer 16 on an inner surface of the mold 12. The mold 12 forms a ventilating throughhole 14. The design layer 16 is made of a resin having projections and depressions on the surface, and has a ventilating throughhole 18 formed so as to couple to the ventilating throughhole 14. The air permeable interposing layer 22 is arranged next to the inner surface of the mold 12 so that an inner surface of the design layer 16, the ventilating throughhole 18 of the design layer 16, and the ventilating throughhole 14 of the mold 12 couple to each other.

Abstract: A method of manufacturing an decoration film includes the steps of forming a semi-finished decoration film formed with a concave-convex pattern on a surface in a method of manufacturing a printing plate including exposure, cleaning, and drying from a photosensitive resin film; and irradiating laser on the concave-convex pattern of the semi-finished decoration film and removing an unnecessary portion to smooth concave-convex parts and/or provide difference in height of a convex part and depth of a concave part of the concave-convex pattern.