Apparatus for promoting the setting of adhesive on stacks of she

Details Apparatus for promoting the setting of adhesive on stacks of she Apparatus for promoting the setting of adhesive on stacks of she

1976-07-16

1978-04-11

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With means applying wave energy or electrical energy...

34 1, 219 1081, 156497, 432152, B32B 1902, H05B 904, B01K 500

Patent

active

040837459

ABSTRACT:
A bookbinding machine wherein stacks of signatures are transported by the holders of an endless conveyor which moves the stacks seriatim along a paster. The paster coats the backs of successive stacks with wet adhesive and the stacks are thereupon transported through a heating zone where the adhesive is heated in the space between two elongated electrodes of a high-frequency heater. A pipe which extends along the path of stacks in the region of one of the electrodes has orifices which discharge streamlets of preheated air across the path of holders to impinge against successive stacks and to thus prevent scorching of signatures by heat which is generated by the high-frequency heater. The rate of flow of air through the orifices of the pipe is adjustable, and such rate preferably increases in the direction of forward movement of the holders.

REFERENCES:
patent: 2044365 (1936-06-01), Pederson
patent: 3149217 (1964-09-01), Reed et al.
patent: 3404462 (1968-10-01), Hanson et al.
patent: 3537185 (1970-03-01), Ingram
patent: 3956053 (1976-05-01), Staats
patent: 4014732 (1977-03-01), Beckert et al.

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