Slit nozzle for coating trips of material, especially paper or board strips, with a pigment coating
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 29, 2002
Grant Date -
N/A
app pub date -
Jul 17, 2000
filing date -
Dec 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A slot nozzle for coating webs of material, for example, paper, paperboard, cardboard, with a flowable coating substance, for example, a pigment coating, has a slot shaped outlet channel to which a distribution chamber extending over the width of the web is connected. A plurality of supply conduits are connected to the distribution chamber in spaced relationship across the width of the web and the length of the outlet channel and each supply conduit has a valve for adjusting the volume flow of the coating liquid. A respective diffuser is provided between each supply conduit and the distribution chamber and widens in the direction of the latter.
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