RESIN MOLDED ARTICLE, MANUFACTURING METHOD THEREOF, AND PRINTER

• Main Authors: KODAIRA KOKI, UEMATSU YUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 02.02.2015
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a resin molded article that reduces color tone changes called surface irregularities that appear on the outer surface corresponding to a boundary between a region having a repeating pattern of a concave and a projection and a region without a pattern on a non-appearance side surface.SOLUTION: A resin molded article includes an appearance surface and a non-appearance surface having a wall thickness of 3.1 mm or less inbetween, a projection of a height of 1 mm or more, and a concave of a height of 0.3 mm or more on at least one of the appearance surface and the non-appearance surface. The non-appearance surface has the projection or the concave, a pattern repeating region, a transition region, and a non-pattern region. The pattern repeating region has a repeated pattern with a unit shape of one of the projection or concave of a height of 0.01 mm or more and 1 mm or less and a width less than that of the resin molded article. The transition region has a unit lattice of a similar shape to the unit shape and a flat lattice of a flat shape. 【課題】 非外観面の凸部又は凹部の繰り返しパターンを有する領域と無パターン領域の境界に相当する外観面に発生する外観ムラと呼ばれる色調の変化を低減した樹脂成形品を提供する。【解決手段】 外観面と非外観面との間の肉厚が３．１ｍｍ以下であり、外観面または非外観面の少なくとも一方に高さ１ｍｍ以上の突起または０．３ｍｍ以上の窪みを有し、非外観面には前記突起または窪みと、繰り返しパターン領域と、遷移領域と、無パターン領域を有し、前記繰り返しパターン領域は、高さが０．０１ｍｍ以上１ｍｍ以下で幅が樹脂成形品の幅よりも小さい凸部または凹部の一方を単位形状とする繰り返しパターンを有し、前記遷移領域は、前記単位形状と同様の形状の単位格子と、平面形状からなる平面格子とを有する樹脂成形品。【選択図】 図１