Process for the manufacture of honeycomb core structures

Details Process for the manufacture of honeycomb core structures Process for the manufacture of honeycomb core structures

1997-05-20

1999-11-09

Crispino, Richard

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156199, 156257, 156259, 156264, 156291, B32B 312, B32B 3118

Patent

active

059806753

ABSTRACT:
A process for the manufacture of honeycomb core structure is disclosed, which substantially comprises the step (a) of of feeding a starting continuous web or sheet of material; the step (b) of applying an adhesive to the sheet material along a plurality of spaced parallel bands; the step (c) of drying the sheet; the step (d) of forming a plurality of slits extending longitudinally of the sheet and interconnected by a transversely extending slit-devoid web portion; the step (e) of cutting the slitted sheet to a predetermined dimension across the slit-devoid web portion; the step (f) of piling a plurality of layers of the thus cut sheets upon one another in a stack with the adhesive bands on one of the adjacent sheets positioned out of registry with those on the other by half of a pitch between the consecutive bands on each sheet; the step (g) of compressively curing the stacked sheets; the step (h) of slicing the cured stack into individual elongated strips; and the step (i) of expanding the strips in a direction normal to the plane of the stack. The step (d) is carried into practice by a slit-forming means capable of forming spaced parallel slits longitudinally of the continuous web simultaneously with a transversely extending slit-devoid blank portion at predetermined intervals, thus providing the web with alternate slitted and slit-free regions.

REFERENCES:
patent: 2983640 (1961-05-01), Knoll et al.
patent: 3301729 (1967-01-01), Kauffman
patent: 3519510 (1970-07-01), Ardolino et al.
patent: 3655476 (1972-04-01), Siegal
patent: 3772112 (1973-11-01), Lyons et al.
patent: 4948445 (1990-08-01), Hees
patent: 4981744 (1991-01-01), Swank
patent: 5277732 (1994-01-01), Meier

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