Equipment for uniformly spreading anti-sticking powders on bitum

Details Equipment for uniformly spreading anti-sticking powders on bitum Equipment for uniformly spreading anti-sticking powders on bitum

1986-01-16

1986-12-23

McIntosh, John P.

Coating apparatus

Carbonizing, flame contact or burning off of coating ingredient

118 63, 118118, 118407, B05C 3172, B05C 1106

Patent

active

046305653

ABSTRACT:
The present invention pertains to an equipment adapted to uniformly spread anti-sticking powders, such as talc in an aqueous suspension, on bituminous membranes for water-repellent coverings in the building field. Said equipment comprises a series of rollers on which the membrane runs. During the feed motion the membrane passes through a suspension-applying station and a drying station. Downstream of the suspension-applying station, a flattened jet of compressed air eliminates the liquid in excess and creates a homogeneous liquid film on the membrane. Afterwards, the membrane reaches a rotating drum provided with suitably disposed shaped reliefs which, on the membrane itself, create a homogeneous distribution of the particles suspended in the liquid film.

REFERENCES:
patent: 2741215 (1956-04-01), Cady et al.
patent: 3177847 (1965-04-01), Schnierlein
patent: 4259006 (1981-03-01), Phillips et al.

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