Coating method

Details Coating method Coating method

1990-10-30

1993-08-17

Padgett, Marianne

Coating processes

Falling curtain of coating material utilized

118DIG4, B05D 130

Patent

active

052367444

ABSTRACT:
A slide-hopper-type coating method in which the viscosity of the coating solution forming a free-falling curtain and the angle .alpha. which the front edge of the lip of the slide hopper forms with respect to the horizontal are selected with respect to the flow rate of the curtain in such a way that the line of contact between the curtain and the web is concave with respect to the direction in which the web travels. In addition, the angle .beta. which the extension of the curtain in the direction of its fall forms with respect to the direction of travel of the web at the point where the curtain is deposited on the web is preferably adjusted so that it is an obtuse angle not larger than 140.degree.. By satisfying these conditions, the coating method of the present invention is capable of extending the upper limit of coating speeds without causing "sagging" in the range of high flow quantities of coating solution per unit length of curtain coat width.

REFERENCES:
patent: 3508947 (1970-04-01), Hughes
patent: 3632374 (1968-06-01), Greiller
patent: 4135477 (1979-01-01), Ridley
patent: 4842900 (1989-06-01), Miyamoto

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2242674