B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
32/36
B05C 5/00 (2006.01) B05C 11/02 (2006.01) G03F 7/16 (2006.01) H05K 3/00 (2006.01)
Patent
CA 1308902
SEPARATING DEVICE FOR TRIMMING THE WIDTH OF A POURED CURTAIN OF COATING MATERIAL ABSTRACT OF THE DISCLOSURE A severing organ for trimming the width of a curtain of coating material poured onto an impingement site on a sub- strate, in particular a printed circuit board, to be coated and being moved at a distance below the foot end of the sever- ing organ transverse to the direction of the flow of the cur- tain consists of a single separating element whose upper end is designed as a knifelike sharp severing edge. The side of the separating element turned toward the central region of the poured curtain is an uninterrupted, smooth wall surface which extends in only one plane from the severing edge in the direc- tion toward the foot end of the separating element, forming a lower foot-end edge therewith, and has an inclination rela- tive to the perpendicular which can be so adjusted that the trimmed central region of the poured curtain flows laminarly downward being laterally widened along the inner wall surface to become detached at the lower foot-end edge, and impinges directly with nearly the same widening onto the substrate to be coated, whereby a coating layer is deposited on the sub- strate with formation of only a narrow marginal bead having at most twice the height of the still undried layer on the substrate.
560158
Denz Martin
Kapp-Schwoerer Diethard
Denz Martin
Fetherstonhaugh & Co.
Kapp-Schwoerer Diethard
Vantico Ag
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