Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Removing surface portion of composite workpiece to expose...
Patent
1996-03-11
1998-05-26
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Removing surface portion of composite workpiece to expose...
264162, 264275, 264279, 425 89, B29C 4500
Patent
active
057560285
ABSTRACT:
A method of manufacturing resin articles with naturally formed patterns is provided. The method uses organic matter, such as portions of a fern like the "Sphaeropteris lepifera", and a resin, to be molded together and then machined into a desired shape. The inner surfaces of the upper mold section and the lower mold section are covered by aluminum foil sheets and enclose a portion of a fern, such as the "Sphaeropteris lepifera" therein. A resin is injected into the mold through an opening in one foil sheet and the mold is heated to an appropriate temperature. Subsequently, the mold is cooled by room temperature air and dried by a drying machine. The resin is removed from the mold and machined into a particular shape in accordance with a predetermined design. The shaped molded resin is smoothed by grinding or filling in uneven portions with resin. After smoothing, the molded resin is polished to provide a naturally-formed pattern on the surface thereof.
REFERENCES:
patent: 1665355 (1928-04-01), Gustafson
patent: 2673371 (1954-03-01), Uhlig
patent: 2811744 (1957-11-01), Baldanza
patent: 3074112 (1963-01-01), Borrow
patent: 3607488 (1971-09-01), Yordan
patent: 5560883 (1996-10-01), Lane et al.
"Preserved in Plastic" Scientific America; p. 217, Oct. 1939.
Klein David I.
Lee Edmund H.
Lee Jun Y.
Rosenberg Morton J.
Silbaugh Jan H.
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