Coating apparatus – Solid member or material acting on coating after application – With means to clean or recondition members
Patent
1977-08-31
1978-09-26
Rimrodt, Louis K.
Coating apparatus
Solid member or material acting on coating after application
With means to clean or recondition members
118203, 118261, 118419, B05C 108, B05C 1110, B05C 318
Patent
active
041161629
ABSTRACT:
Apparatus for coating moving web material includes an open trough containing a fluid coating agent over which a tensioned web to be coated travels. A pair of rotatable doctor rods are supported by the narrow edge areas of open channels across which the rods lie, the channels and the doctor rods extending widthwise parallel to the trough and adjacent each side thereof, with the rods forming upright extensions of the opposite sidewalls of the trough, so that the web contacts the rods sequentially as it traverses the trough. The rod on the far side of the trough relative to the moving web wipes the coating picked up from the trough by the web to desired thickness, and the channel support for the rod enables the rod to be wiped and cleaned by the narrow edge areas, which may be made from replaceable thin doctor strips that extend beyond the channel sidewalls. The trough and channels can be formed from a unitary base block that is adjustable relative to tension guide means for the web, the doctors rods may be of different sizes, and the doctor rods may be hollow to accommodate a heat exchange medium.
REFERENCES:
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patent: 3826228 (1974-07-01), Glover
Dinter Peter
Guckes Reinhold
Kolbe Andreas
Hoechst Aktiengesellschaft
Rimrodt Louis K.
Schwaab Richard L.
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