Single-facer

Details Single-facer Single-facer

1993-05-21

1995-02-14

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

156210, 156 64, 156378, 156472, B32B 3108, B31F 128

Patent

active

053891830

ABSTRACT:
The present invention reduces damages in a single-facer expected when foreign matters are bitten between a downstream side corrugating roll and an upstream side corrugating roll, achieves effective utilization of a peripheral space, and also improves a bonding strength between a core paper web and a corrugated paper web by maintaining a temperature of a single-faced cardboard sheet constant.
A downstream side corrugating roll and an upstream side corrugating roll are formed in such manner that a pitch circle diameter of the downstream side corrugating roll may be larger than a pitch circle diameter of the upstream side corrugating roll and the ratio of the diameter of the downstream side corrugating roll to the diameter of the upstream side corrugating roll may be a predetermined integer ratio. Even in the event that a foreign matter such as a bolt has been bitten between the respective corrugating rolls, damages occurring on the both corrugating rolls are limited to a number of locations, and so, great reduction of a repair time can be realized. In addition, at least either one of a pressing force and a wrapping angle of an endless belt is regulated by detecting a surface temperature of a single-faced cardboard sheet with a temperature sensor and controlling a cylinder via a temperature regulator and an electro-pneumatic converter in response to the detection signal, and thereby the surface temperature of the single-faced cardboard sheet can be maintained constant.

REFERENCES:
patent: Re22842 (1947-02-01), Hill
patent: 2589966 (1952-03-01), Rullo
patent: 2638962 (1953-05-01), Nitchie
patent: 2793674 (1957-05-01), Reinhard
patent: 3053309 (1962-09-01), Wilson et al.
patent: 3630806 (1971-12-01), Kitajima
patent: 3676247 (1972-07-01), Morris et al.
patent: 3811987 (1974-05-01), Wilkinson et al.
patent: 3920496 (1975-11-01), Wilkinson et al.
patent: 4481066 (1984-11-01), Hirakawa et al.
patent: 4556444 (1985-12-01), Schommlee
European Search Report, The Hague, completed Apr. 6, 1992.

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