Doctor bar for the volumetric metering of flowable materials...

Details Doctor bar for the volumetric metering of flowable materials... Doctor bar for the volumetric metering of flowable materials...

B - Operations, Transporting

05

C

32/39

B05C 11/02 (2006.01) B05C 21/00 (2006.01) D21H 23/58 (2006.01)

Patent

CA 2026897

ABSTRACT OF THE DISCLOSURE A doctor bar for volumetric metering of a flowable coating material onto a paper or cardboard web has an elongated body whose generally cylindrical periphery is defined by a surface distribution of discrete rises separated by troughs. Therises have outer faces lying in an imaginary surface coaxial with the body and which are straight in axial cross section. The total area of the faces constitutes 10% to 50% of the area of the cylindrical imaginary surface and the profile depth of the rises is between 30µm and 150µm.

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