Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Deforming the surface only
Patent
1995-06-06
1997-12-16
Aftergut, Jeff H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Deforming the surface only
156 87, 156209, 264294, 264296, 264321, B29C 4326, B29C 5902, B29C 5904
Patent
active
056981538
ABSTRACT:
A method of prescoring foam board for making composite panels includes impressing a pattern of ridges projecting from a surface of a die into at least one face surface of the foam board. The pattern of ridges on the die forms a pattern of indentations having three series of parallel linear indentations, each series being angularly offset from each series other by 60.degree.. The ridges on the embossing die are pressed into the foam sufficiently deep that the the pattern of indentations impressed in the board surface after whatever springback occurs remain deep enough to enable volatiles generated in an interior zone of a panel to escape when drawn out by a vacuum pump when the foam board is heated under pressure between two face sheets of resin-preimpregnated fabric to form a composite panel.
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Hoopingarner Neil L.
Matin Barry D.
Aftergut Jeff H.
Neary J. Michael
Nelson Lawrence W.
The Boeing Co.
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