Hot plate for corrugated paperboard double facer

Details Hot plate for corrugated paperboard double facer Hot plate for corrugated paperboard double facer

1994-06-07

1996-03-26

Yoder, Michele K.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With bending, folding, winding, or wrapping means

156499, 1565835, 165168, B31F 120, B32B 3126

Patent

active

055017622

ABSTRACT:
A hot plate for a double facer used in the manufacture of corrugated paperboard includes a substantially all copper construction which enhances thermal conductivity and heat transfer efficiency. Steam for heating the plates is provided through an array of copper tubes extending between manifolds on opposite sides of the hot plate, all in a manner which obviates the need for heavy pressure vessel construction. The hot plate is allowed to float on its supporting frame in a manner which accommodates lateral thermal expansion, and the lateral ends are tied vertically to the supporting frame to prevent thermal bowing characteristic of prior art systems.

REFERENCES:
patent: 3175300 (1965-03-01), Nitchie
patent: 3413176 (1968-11-01), Port et al.
patent: 4212348 (1980-07-01), Kobayashi
patent: 4478277 (1984-10-01), Friedman et al.
patent: 4479048 (1984-10-01), Kinoshita
patent: 5096408 (1992-03-01), Bielfeldt
patent: 5156714 (1992-10-01), Thomas
patent: 5183525 (1993-02-01), Thomas
patent: 5244518 (1993-09-01), Krayenhagen et al.
patent: 5263538 (1993-11-01), Amidieu et al.

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