Plastic molded article with a finished surface appearance

Details Plastic molded article with a finished surface appearance Plastic molded article with a finished surface appearance

1996-08-29

1998-01-06

Watkins, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428156, 428338, 428220, 264299, 264219, 264400, 21912169, 21912168, B32B 330, B24C 4526

Patent

active

057052549

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.

REFERENCES:
patent: 4544578 (1985-10-01), Duane, Jr.
patent: 4965430 (1990-10-01), Curtis et al.
"Tool Engineer", Monthly Magazine for Manufacturing Engineers, pp. 76-81 (Mar. 1993).
"Die & Mould Technology", vol. 8, No. 3, pp. 69-73 (Mar. 1993).

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