Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like
Patent
1989-02-03
1991-02-05
Epstein, Henry F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Honeycomb-like
156292, 181292, 244117R, 428138, B32B 312
Patent
active
049903918
ABSTRACT:
The invention is directed a laminate structure using a reticulated adhesive material positioned between the honeycomb core and a perforate sheet and a precured reticulated adhesive between the perforated sheet and an outer layer of wire screen or other porous fibrous materials with similar pore openings therethrough through which the cells of the honeycomb core can communicate the atmosphere adjacent to the opposite side of the outer layer of porous material and a method of manufacturing same. During the manufacturing process of honeycomb noise attenuation structures which includes an imperforate sheet, an open cell honeycomb core, a perforated sheet and a layer of porous material stacked in that order a thin sheet of a reticulative adhesive material is positioned between the honeycomb core and perforated sheet and between the perforated sheet and the outer porous layer. During reticulation the reticulative material by its physical makeup shrinks to the edges of the perforations of the perforated sheet thereby leaving the perforations of both sheets of material open to the cells providing a bonding agent between the honeycomb core and perforated sheet and a similar precured layer providing galvanic isolation between the porous sheet and the perforated sheet.
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Millard Ernest C.
Veta Ross E.
Epstein Henry F.
Gilliam Frank D.
Rohr Industries, Inc.
Schlesinger Patrick J.
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