Apparatus for applying fluent thermoplastic materials

Details Apparatus for applying fluent thermoplastic materials Apparatus for applying fluent thermoplastic materials

1975-04-29

1976-10-26

McIntosh, John P.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

B05C 502

Patent

active

039877540

ABSTRACT:
Thermoplastic adhesive which has a tendency to form threads is applied to an article and, after terminating the supply of adhesive, the dispensed but not yet applied portion of adhesive is wiped on part of the article that is as yet free from adhesive. Apparatus for performing this method comprises a rotary cam for projecting an adhesive-applying nozzle towards successive articles moved past the nozzle and then retracting it again. The rotary cam has a first cam track portion governing retraction of the nozzle, a second cam track portion governing projection of the nozzle and an intermediate cam track portion for projecting the nozzle still further, control means being provided for opening valve means when the nozzle is in the projected position governed by said second cam track portion and closing the valve means during said still further projection of the nozzle.

REFERENCES:
patent: 3782599 (1974-01-01), Luginbuhl

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