Low pressure single facer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 21, 2000
Grant Date -
N/A
app pub date -
May 15, 1997
filing date -
Nov 1, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for producing a single face corrugated web from an adhesively bonded liner and medium web without the use of a pressure roll nip where the liner web is joined to the medium web. A heated bonding roll with a fluted outer surface carries the single face web around a circumferential portion sufficient to create a green bond in the glue lines before the web is removed from the roll. The bonding roll may be internally heated or a steam chamber may be positioned around a portion of a lower bonding roll, such that the steam chamber introduces a supply of steam into contact with the single face web while the single face web is in contact with the outer circumference of the bonding roll. An adjustable wrap arm places the freshly glued single face web in contact with the bonding roll and tension in the liner web is controlled to adjust the radial force applied to the glue lines.
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