Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1974-12-11
1977-05-24
Lesmes, George F.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 72, 428116, 428902, B32B 312
Patent
active
040256758
ABSTRACT:
The disclosed reinforced laminate or composite board comprises external first and second continuous spaced sheets of fiber-reinforced synthetic resin, with the reinforcing fibers in each sheet oriented so as to provide reinforcement in two directions of stress. A supporting core is sandwiched between the first and second sheets. This supporting core is formed by a plurality of rib elements extending in directions different from the directions in which the reinforcing fibers of the first and second sheets are oriented. The rib elements are composed of superimposed roving bundles which are impregnated with synthetic resin. In a preferred embodiment of the invention, the reinforcing fibers of the external sheets are arranged in two superimposed fiber layers, the fibers of one of the layers extending perpendicularly to the fibers of the other layer, thereby to provide reinforcement in two main directions of stress. The rib elements in this embodiment extend diagonally to the fibers of the external sheets.
REFERENCES:
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patent: 2843153 (1958-07-01), Young
patent: 3247039 (1966-04-01), Schultheiss
patent: 3291333 (1966-12-01), House
patent: 3300354 (1967-01-01), Duft
patent: 3490983 (1970-01-01), Lee
patent: 3544417 (1970-12-01), Corzine
patent: 3673058 (1972-06-01), Jackson et al.
patent: 3694284 (1972-09-01), Kromrey
patent: 3713959 (1973-01-01), Rottmayer et al.
Epstein Henry F.
Lesmes George F.
Messerschmitt-Bolkow-Blohm GmbH
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