Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like
Patent
1986-06-16
1988-09-27
Epstein, Henry F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Honeycomb-like
144333, 264 465, 264261, 4285371, B32B 312
Patent
active
047741210
ABSTRACT:
An improved core structure is provided for composite structures and particularly those employing fiberglass reinforced plastic surface layers. In accordance with this invention, a composite article is formed having a central layer comprised of a plurality of elongated hollow rod like members which are supported by a retaining material. The rod members are preferably made from a naturally occurring hollow material such as bamboo stalks. The retaining material is preferably a foam type plastic such as urethane, PVC, or syntactic foam. The core structure may be fabricated by loading a plurality of bamboo stalks into an elongated trough form, and then filling the trough with retaining material. Following curing, the core body is removed from the form and is sliced into plate shaped individual core pieces. The core structures are thereafter skinned with a plastic outer layer such as fiber reinforced plastic and used to develop webs, bulkheads, reinforcing members and various other features in composite structures.
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