Apparatus for applying adhesive in corrugated board manufacture

Details Apparatus for applying adhesive in corrugated board manufacture Apparatus for applying adhesive in corrugated board manufacture

1980-07-11

1982-08-10

McIntosh, John P.

Coating apparatus

With means to deform work

118126, 118410, B05C 502, B05C 1104

Patent

active

043432590

ABSTRACT:
The invention comprises an extrusion head for coating or adhesive application. The head is particularly well adapted for application of high viscosity hot melt adhesives in the manufacture of corrugated board. It comprises the combination of a body having a slit or series of orifices with a thin, flexible downstream spreader element. The spreader element contacts the coating receiving surface at a low acute angle to level the coating material but does not serve as a doctor to control coating thickness.
When used as the adhesive applicator at the single facer of a container board corrugating machine, excellent pin adhesion values were obtained at adhesive usages as low as 6 g/m.sup.2.

REFERENCES:
patent: 2464771 (1949-03-01), VanGuelpen
patent: 3285225 (1966-11-01), Recor
patent: 3348526 (1967-10-01), Neubauer
patent: 3518142 (1970-06-01), Dooley
patent: 3521602 (1970-07-01), Coghill
patent: 3972763 (1976-08-01), Wolven et al.
patent: 4158076 (1979-06-01), Wallsten
patent: 4223633 (1980-09-01), Alvensleben et al.

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