Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1994-11-15
1997-05-06
Johnstone, Adrienne C.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156205, 156210, 493463, B31F 126, B31F 128
Patent
active
056267096
ABSTRACT:
A single facer has corrugating rolls of which the cross-sectional tip and root curves are elliptical (as broadly defined) to form a medium compression zone 38 beyond which, on each side of the tip center line, the root extends to define a clearance gap greater than the thickness of the medium; the root curve may (FIGS. 2 and 3) continue as an ellipse which also defines the flute flank, or alternatively the flute flank may be defined by a straight line 76 (FIG. 4) with a transition curve 58 between the straight line and the root curve 52. According to a different aspect of this invention, flank clearance is provided by the use of differently shaped flutes on the two corrugating rolls; for example (FIG. 5) the second roll 71 which carries the medium after corrugating may have straight flanks 76, and the other roll may have concave flanks 78.
REFERENCES:
patent: 50802 (1865-11-01), Danner
patent: 1936228 (1933-11-01), Crafton
patent: 2241146 (1941-05-01), Little
patent: 2258443 (1941-10-01), Bruker
patent: 2343126 (1944-02-01), Matlat
patent: 3053309 (1962-09-01), Wilson et al.
patent: 4101367 (1978-07-01), Maier
patent: 4503696 (1985-03-01), Roeder
Johnstone Adrienne C.
The Langston Corporation
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