Heat transfer control system for a double backer

Details Heat transfer control system for a double backer Heat transfer control system for a double backer

1995-04-06

1996-11-26

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With bending, folding, winding, or wrapping means

156210, 156470, 1565835, 156205, 100 93P, B31F 128

Patent

active

055781608

ABSTRACT:
A system for controlling the rate of heat transfer between the heating surfaces and a corrugated web in a double backer includes an air flow system operable to selectively apply a vacuum to the underside of the web via chambers formed in the spaces between the heating units or to apply pressurized air to the chambers to cool and lift the web, as necessary. A complementary system controls bowing in the surfaces of the heating units by supporting the undersides of the heating units with columns which include a thermally responsive metal member having an known coefficient of thermal expansion. The metal members are selectively heated by heating elements responsive to sensed bowing of the heating units to eliminate or minimize such bowing.

REFERENCES:
patent: 995084 (1911-06-01), Pacyna
patent: 2987105 (1961-06-01), Gebbie
patent: 3175300 (1965-03-01), Nitchie
patent: 3226840 (1966-01-01), Moser et al.
patent: 4408520 (1983-10-01), Wons et al.
patent: 5156782 (1992-10-01), Ballantyne
patent: 5183525 (1993-02-01), Thomas

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