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US 6,565,942 B2Granted
Composite panel having a thermoplastic seam weld
AssigneeThe Boeing Company
InventorsDavid M. Anderson, Steven E. Hahn, Douglas A. McCarville
Life of this patent
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Abstract
The present invention is a method for joining thermoplastic composite sandwich panels with thermoplastic welds (fusion bonds) made without autoclave processing of the joint. The preferred joint is a double interleaf staggered joint with supporting titanium doublers providing a tensile strength of at least 12,000 lb/in. The joint is particularly suited for joining sections of a cryogenic tank for spacecraft.
Claims4
A composite honeycomb sandwich panel, comprising:
- (a) a honeycomb core having a foaming adhesive butt joint defining a bond line;
- and
- (b) upper and lower face sheets adhered to the honeycomb core, each face sheet including a thermoplastic weld substantially along the bond line.
Dependencies are inferred from the claim text.