Adhesive supplying system

Details Adhesive supplying system Adhesive supplying system

1985-02-25

1986-05-13

Rolla, Joseph J.

Dispensing

Automatic control

Motor control

2221462, 222375, 222638, 141116, B67D 500

Patent

active

045881090

ABSTRACT:
In a thermo-cementing and folding machine which has a suck-back facility, by which at the end of an adhesive-applying operation adhesive supplied through the nozzle (22) is sucked back into the nozzle so as to prevent `drooling`, auxiliary suck-back steps are introduced at timed intervals following the primary suck-back operation, through controlled amounts, in order to counter further risk of `drooling` caused by thermal expansion of the adhesive in the nozzle (22). The number of auxiliary suck-back steps is variable according to the adhesive supply rate at the time of termination of the adhesive-applying operation.

REFERENCES:
patent: 2605025 (1952-07-01), Cozzoli
patent: 3779426 (1973-12-01), Mawby
patent: 3895748 (1975-07-01), Klingenberg
patent: 3942686 (1976-03-01), Roth
patent: 4119058 (1978-10-01), Schmermund

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