Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1995-07-28
1998-06-30
Crispino, Richard
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
156221, 264223, 264294, 264DIG30, 264DIG59, B29C 3502, B29C 4320
Patent
active
057729450
ABSTRACT:
A composite material blank for an orthotic insert. The device is formed of layers of fiberglass and graphite fiber material. A first graphite fiber layer provides the overall structure with increased strength, while secondary graphite fiber reinforcement strips are arranged below the first and fifth rays of the foot to provide additional rigidity and control in these areas. The edges of the graphite fiber layers are recessed inwardly from the edges of the fiberglass layers so as to provide a graphite-free border which prevents cracks from propagating into the graphite fiber layers. The layers are bonded together by heat curing.
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Plastics Engineering Handbook, 4th Edition, 1976, p. 281.
Crispino Richard
Hathaway Todd N.
Northwest Podiatric Laboratory, Inc.
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