Coating apparatus – Projection or spray type – Flexible web or strand work
Reexamination Certificate
2004-11-12
2008-10-07
Edwards, Laura (Department: 1792)
Coating apparatus
Projection or spray type
Flexible web or strand work
C118S304000, C068S200000, C068S202000
Reexamination Certificate
active
07431771
ABSTRACT:
An apparatus and method for applying a foamed composition to a traveling substrate that has a tendency to be dimensionally unstable. A pair of closely spaced driven guide rollers guides a traveling substrate with sufficient roller engagement and controlled tension to minimize dimensional distortion. A foam applicator with a substrate engaging foam dispensing nozzle face is positioned within the space between the rollers to deflect the substrate inwardly between the rollers. The face extends in close proximity to the rollers to minimize the free extent of travel of the substrate between the rollers and the nozzle face. Two pairs of guide rollers and two nozzles may be arranged for applying foamed composition to the opposite sides of the traveling substrate.
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Neupert Hermann A.
Zeiffer Dieter F.
Edwards Laura
Gaston Systems Inc.
K&L Gates LLP
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