Applicator for applying adhesive to a work piece

Details Applicator for applying adhesive to a work piece Applicator for applying adhesive to a work piece

1982-04-06

1983-12-06

McIntosh, John P.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

222148, 239110, B05C 502

Patent

active

044186401

ABSTRACT:
The applicator for applying adhesive to a work piece, for example in an edge glueing machine for work pieces moving continuously through the machine, has adhesive discharge holes (6). The adhesive is supplied through these holes (6) under pressure to the edge of work pieces. Any contaminating particles, which may be present in the adhesive prior to its application to the work piece, tend to travel upwardly with the adhesive in the adhesive supply conduit (2, 4), due to their lower specific weight, whereby the contaminations may clog the discharge holes (6) and prevent the proper application of adhesive to a work piece. For avoiding such clogging the nozzle body (1) is provided with a scavenging duct (5) which is connectable to the adhesive supply conduit (2, 4) for repeatedly passing a portion of adhesive out of the supply conduit (4), whereby the application of adhesive may be performed without any trouble. The discharge holes (6) are closed during the scavenging of a small portion of adhesive. Preferably the scavenging duct portion (5') is connected to the supply conduit at a location above the adhesive discharge holes (6).

REFERENCES:
patent: 3753529 (1973-08-01), Baker
patent: 3921905 (1975-11-01), McElhoe et al.
patent: 4178876 (1979-12-01), Nicklas et al.

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