Coating apparatus and coating method for moving webs

Claim 1

A METHOD OF APPLYING A SMOOTH AND HIGH GLOSS COATING OF A DESIRED WET THICKNESS OF A COATING MATERIAL ONTO A MOVING WEB, WHICH METHOD COMPRISES (A) APPLYING SAID COATING MATERIAL ONTO AT LEAST ONE SURFACE OF SAID WEB TO PRODUCE A COATED WEB, (B) POSITIONING A BAR MEANS BETWEEN A POINT WHERE SAID COATING MATERIAL IS APPLIED ONTO SAID WEB AND A POINT P ON SAID COATED WEB WHERE P IS BEFORE THE FIRST POINT OF CONTACT OF A BACKING MEANS WITH THE COATED WEB. (C) REMOVING A DESIRED AMOUNT OF EXCESS COATING MATERIAL BY SAID BAR MEANS TO OBTAIN A DESIRED COATING THICKNESS ON SAID WEB, (D) AFTER SO REMOVING EXCESS COATING WITH SAID BAR MEANS, MOVING SAID WEB TO ONE SIDE OF THE BAR MEANS AND THENCE UPWARDLY IN AN ARCUATE COURSE WITH SAID SURFACE HAVING THE COATING MATERIAL THEREON FORMING THE OUTER CONVEX SIDE OF THE WEB WHERE IT MOVES IN SUCH COURSE, AND (E) DIRECTING A STREAM OF GAS DOWNWARDLY AT SAID SURFACE OF SAID COATED WEB, AT AN IMPINGEMENT LINE TRANSVERSE TO THE DIRECTION OF WEB TRAVEL, AND ON THE OUTER CONVEX SIDE OF THE WEB WHERE IT MOVES IN SAID ARCUATE COURSE, TO OBTAIN A UNIFORM, SMOOTH, AND HIGH GLOSS COATING SURFACE; SAID IMPINGEMENT LINE BEING A SUFFICIENT DISTANCE AWAY FROM AND BEYOND SAID BAR MEANS SO THAT THE MAIN FORCE OF SAID STREAM OF GAS DOES NOT COME IN CONTACT WITH SAID EXCESS COATING MATERIAL BEING REMOVED BY SAID BAR MEANS.

Claim 2

A METHOD OF APPLYING A SMOOTH AND HIGH GLOSS COATING OF A DESIRED WET THICKNESS OF A COATING MATERIAL ONTO A MOVING WEB, WHICH METHOD COMPRISES (A) APPLYING SAID COATING MATERIAL ONTO AT LEAST ONE SURFACE OF SAID WEB TO PRODUCE A COATED WEB, (B) POSITIONING A BAR MEANS BETWEEN A POINT WHERE SAID COATING MATERIAL IS APPLIED ONTO SAID WEB AND A POINT P ON SAID COATED WEB WHERE P IS BEFORE THE FIRST POINT OF CONTACT OF A BACKING MEANS WITH THE COATED WEB. (C) REMOVING A DESIRED AMOUNT OF EXCESS COATING MATERIAL BY SAID BAR MEANS TO OBTAIN A DESIRED COATING THICKNESS ON SAID WEB, (D) AFTER SO REMOVING EXCESS COATING WITH SAID BAR MEANS, MOVING SAID WEB TO ONE SIDE OF THE BAR MEANS AND THENCE UPWARDLY IN AN ARCUATE COURSE WITH SAID SURFACE HAVING THE COATING MATERIAL THEREON FORMING THE OUTER CONVEX SIDE OF THE WEB WHERE IT MOVES IN SUCH COURSE, AND (E) DIRECTING A STREAM OF GAS DOWNWARDLY AT SAID SURFACE OF SAID COATED WEB, AT AN IMPINGEMENT LINE TRANSVERSE TO THE DIRECTION OF WEB TRAVEL, AND ON THE OUTER CONVEX SIDE OF THE WEB WHERE IT MOVES IN SAID ARCUATE COURSE, TO OBTAIN A UNIFORM, SMOOTH, AND HIGH GLOSS COATING SURFACE; SAID IMPINGEMENT LINE BEING A SUFFICIENT DISTANCE AWAY FROM AND BEYOND SAID BAR MEANS SO THAT THE MAIN FORCE OF SAID STREAM OF GAS DOES NOT COME IN CONTACT WITH SAID EXCESS COATING MATERIAL BEING REMOVED BY SAID BAR MEANS.