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US 6,149,751 AGranted
Low pressure single facer
AssigneeMarquip, Inc.
InventorCarl R. Marschke
Life of this patent
Estimating the term…
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AssigneeMarquip, Inc.
InventorCarl R. Marschke
Estimating the term…
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.
An apparatus for forming a single face corrugated paperboard web from a liner web and a corrugated medium web by corrugating, gluing, joining and bonding the component webs on a common roll, said apparatus comprising:
A method for corrugating, gluing, joining and forming on a common roll substantially complete adhesive green bonds in a single face corrugated paperboard web which includes a liner web adhesively joined to the glued flute tips of a corrugated medium web, the method comprising the steps of:
Dependencies are inferred from the claim text.