Rotating rod, rotating press roll nip coating apparatus

Details Rotating rod, rotating press roll nip coating apparatus Rotating rod, rotating press roll nip coating apparatus

1977-05-25

1979-09-18

Newton, Dorsey

Coating apparatus

With stretching or tensioning

118414, B05C 1100

Patent

active

041679148

ABSTRACT:
An extrusion coater for high viscosity, thin coatings of the hot melt type, includes an elongated slot coating head across which the web to be coated is advanced under tension and includes a lead-on lip at the slot plus a fixed, unyieldable, lead-off lip having an elongated, rotatable, cylindrical rod deeply seated for about two thirds of its circumference therein and unyieldably supported on a fixed axis of rotation. A yieldably mounted, press roll with a rubber like surface forms a pressure nip with the smooth hard unyieldable surface of the rod and the rod is rotated intermittently, or continuously by power means depending on the amount of impurities in the coating media. The rod rotation is not for metering purposes but for spreading wear while overcoming any streaking.

REFERENCES:
patent: 2009631 (1935-07-01), Montgomery
patent: 2946307 (1960-07-01), Warner
patent: 3057327 (1962-10-01), Faeber et al.
patent: 3131092 (1964-04-01), Coghill
patent: 3245377 (1966-04-01), Gettel
patent: 3461837 (1969-08-01), Dreher
patent: 3496012 (1970-02-01), Biorseth
patent: 3854441 (1974-12-01), Park
patent: 3919974 (1975-11-01), Herzog

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