Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1996-11-27
1999-03-02
Loney, Donald
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428167, 428192, 428213, 264 86, 264257, 264313, 425 84, 425 86, 4254031, 425447, 425DIG119, 162223, 162224, 162382, B32B 300, B32B 126, D21F 1300
Patent
active
058768351
ABSTRACT:
Stressed-skin panels are provided having internal open-cell grids molded from material such as fibers, and methods and apparatus for the production thereof are disclosed. The invention utilizes a porous screen having a plurality of elastomeric pads spaced apart thereon. Fiber dispersed in fluid is introduced into the apparatus and over and around the pads. Pressure exerted thereon expels fluid through the screen and consolidates the fibers to form a panel. The pads are designed and constructed in a manner so as to consolidate the fiber mat located below the pads compressed by the pressure, so that the finished panel includes an integrally-molded flange. The height, shape and/or spacing of the pads in the present invention advantageously provide improved mold release and greater resistance to compression set after repeated use. The pads provide greater consistency and improved quality in the flange formation on the panels.
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Jessop Colin S.
Masters Jonathan D.
Newburn Timothy L.
Noble Robert L.
Gridcore Systems International
Loney Donald
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