Coating rod and producing method therefor

Details Coating rod and producing method therefor Coating rod and producing method therefor

2004-09-30

2008-12-30

Edwards, Laura (Department: 1792)

Coating apparatus

Solid member or material acting on coating after application

Running length work

C118S110000, C118S118000, C118S211000, C118S244000, C118S258000, C118S414000, C492S037000

Reexamination Certificate

active

07470327

ABSTRACT:
A peripheral surface of a coating rod has an area where grooves (convex portions) are formed. This area is ground by a grinding apparatus by which a maximum height Ry of the rod surface is adjusted to 15 μm or less. Further, a ratio of D/W is adjusted to 0.01 or more, wherein D is a total distance of the convex portions of the rod actually abutting on a web in an axial direction of the rod, and W is a coating width of the web. Furthermore, straightness of the rod is adjusted to 30 μm or less per 1 m, and roundness of the rod is adjusted to 10 μm or less. Micro-projections are removed by grinding so that scratches of a coating surface are prevented from occurring. Coating unevenness is prevented by improving the straightness and the roundness.

REFERENCES:
patent: 4426757 (1984-01-01), Hourticolon et al.
patent: 6666807 (2003-12-01), Codet et al.
patent: 06118557 (1994-04-01), None
patent: 08257601 (1996-10-01), None
patent: 09-001032 (1997-01-01), None
patent: 2001-000901 (2001-01-01), None
patent: 2001-087697 (2001-04-01), None

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