Coating apparatus

Details Coating apparatus Coating apparatus

1991-04-03

1992-12-01

Wityshyn, Michael G.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118419, 427356, B05C 502

Patent

active

051677130

ABSTRACT:
A coating apparatus for magnetic recording mediums used as magnetic tapes and floppy disks, capable of forming two layers by simultaneous coating on a support continuously traveling. The apparatus includes a die having a first, second and third lip and a first and second slit. The surfaces of the lips at a downstream side of the slits are curved to have arcs in their cross-sectional shapes at their tips, wherein; when the edge of the second lip on the side of the first slit is represented by A, the edge of the second lip on the side of the second slit is represented by B, the edge of the third lip on the side of the second slit is represented by C, and the edge of the third lip on the reverse side of the second slit is represented by D, the angle formed by a tangent line X and B and a tangent line Y and C is represented by .theta., 0.ltoreq..theta..ltoreq.5.degree.; the length of an arc AB in the direction of support travel and the length of an arc CD in the direction of support travel are 3 mm.ltoreq.AB.ltoreq.7 mm and 3 mm.ltoreq.CD.ltoreq.7 mm; and when the curvature radius of the curved surface of the second lip is represented by R1 and the curvature radius of the curved surface of the third lip is represented by R2, 4 mm.ltoreq.R1.ltoreq.20 mm and 4 mm.ltoreq.R2.ltoreq.20 mm; and the second slit has a gap length of from 0.1 mm to 0.3 mm.

REFERENCES:
patent: 4424762 (1984-01-01), Tanaka et al.
patent: 4480583 (1984-11-01), Tanaka et al.
patent: 4537801 (1985-08-01), Takeda
patent: 4854262 (1989-08-01), Chino et al.
patent: 4994306 (1991-02-01), Takahashi et al.
patent: 5028450 (1991-07-01), Naka et al.
patent: 5069934 (1991-12-01), Chino et al.
patent: 5083524 (1992-01-01), Hiraki et al.
patent: 5097792 (1992-03-01), Umemura et al.
"Coating Engineering" by Takashi Kageyama, vol. 21, No. 10, pp. 475-479, Apr. 1, 1986.

Affiliated with

Also associated with

Rating

Coating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coating apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coating apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-501196