Patent ID: 6174372
Filing Date: 2001-01-16
Classification: B05C

Abstract:
A coating apparatus for coating opposing sides of a web, traveling in a traveling direction along a transfer paths with a coating solution, comprising:dies installed on opposing sides of said transfer path;said dies each including a reservoir for storing the coating solution inside respective ones of said dies;said dies each having an ejection port with an elongated width along a width direction of the web for ejecting the coating solution;ejection paths for the coating solution communicating substantially the elongated width of the ejection ports with respective ones of said reservoirs;coating solution supplying means for supplying a controlled amount of the coating solution to said reservoirs to effect ejection of the coating solution onto opposing sides of the web by ejecting the coating solution respectively from said ejection ports onto the web;each of said ejection paths having a rotary valve with a rotatable valve element of a substantially cylindrical shape extending parallel to and along a width of the elongated width of the ejection ports which opens said ejection path when positioned within a first angular range and closes said ejection path when positioned within a second angular range; anddriving means for pivoting said rotatable valve elements of the rotary valves between said first angular range and said second angular range to provide intermittent flow of said coating solution to apply an intermittent coating to said web.