Structural panel
AssigneeBombardier Inc.
InventorGermain Belanger
Life of this patent
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Abstract
A structural panel such as a door for a railway freight car has a lightweight core formed by two sheets of low density material e.g. balsa wood. Each sheet has bonded to one side a series of layers of glass fibre, and the sheets are bonded together in confronting relationship to form the panel. The glass fibre layers extend around the edges of the panel which edges are further reinforced by a channel-shaped plastics edging member.
Claims8
A structural panel comprising laminated planar outer layers of resin bonded glass fibre arranged on opposite faces of a relatively thick, lightweight core matrix, said core matrix comprising two sheets of low density material each bonded to the glass fibre outer layers on one side of the panel, and bonded together in confronting relationship in the neutral plane of the panel, and said outer layers of glass fibre on each face of the panel comprising successively from the outermost face (a) a layer of woven roving (b) a random fibre mat and (c) at least one layer of unidirectional fibres.
A structural panel comprising laminated planar outer layers of resin bonded glass fibre arranged on opposite faces of a relatively thick, lightweight core matrix, said core matrix comprising two sheets of balsa wood arranged with the grain extending in the direction of the thickness of the panel, each said sheet being bonded to the glass fibre outer layers on one side of the panel, and said sheets being bonded together in confronting relationship in the neutral plane of the panel.
Dependencies are inferred from the claim text.