Plastic molded article with a finished surface appearance
AssigneeCanon Kabushiki Kaisha
InventorsHisakazu Morinaga, Shoichi Shimura, Kazutaka Takeuchi
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Abstract
A plastic molded article has an external appearance of a coated article and is formed by injection molding using a mold with a surface shaped by forming machining marks in the form of recesses over the entire mold surface. The resulting plastic molded article has a center line average roughness of the surface shaped of the plastic molded article less than 0.5 .mu.m and one of either an average slope within the range of 1.0.about.10.0.degree. or an average peak-to-peak interval within the range of 5.0-30.0 .mu.m.
Claims6
A plastic molded article having an external appearance of a coated article and formed by injection molding using a mold with a surface shaped by forming machining marks in the form of recesses over the entire mold surface, with each recess having a radius of less than 25 .mu.m, comprising:
- a plastic molded article having a surface shape of the mold surface, wherein
- the plastic molded article has a centerline average roughness Ra of the surface shape of the plastic molded article less than 0.5 .mu.m and one of either an average slope .DELTA.q within the range of 1.0.degree..about.10.0.degree. an average peak-to-peak interval S within the range of 5.0-30.0 .mu.m, whereby an 85.degree. specular gloss value of the molded article surface is greater than 40% and less than 80%, which is equivalent to a gloss value of the coated article surface.
Dependencies are inferred from the claim text.