Appeal No. 1999-2205
Application No. 08/738,469
rolls being positioned on a side of the web path which is
opposite to said coating head;
moving the coating head and a web apart from each other
before a splice joint passes across said coating head;
bringing said coating head and a subsequent web into
mutual contact after said splice joint has passed said coating
head, said coating head contacting the web at a position
between the first and second guide rolls, wherein a coating
having a second coating thickness which is greater than said
first coating thickness is formed on said web when said
coating head and webs are moved out of and into contact with
each other;
moving a scraping means into contact with the web at a
position downstream of said coating head and downstream of a
downstream guide roll of the first and second guide rolls, in
response to a movement of the coating head away from the web,
such the scraping means is brought into contact with the web
at substantially the same time that the coating head and web
are moved apart from each other to remove entirely said
coating having said second coating thickness from the web and
transfer said entire removed coating having said second
coating thickness onto said scraping means;
scraping the removed coating having said second coating
thickness from said scraping means by a doctor blade in
continuous contact with said scraping means;
detecting a variation in a flow rate of the coating
composition through the slit when the coating head is brought
back into contact with a further subsequent web; and
moving said scraping means out of contact with the web
when the detected variation in the flow rate of the coating
composition is within a range indicative of the forming of a
coating having said first coating thickness on the web.
The references relied upon by the examiner as evidence of
obviousness are:
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