Single-ply paperboard tube and method of forming same
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United States of America Patent
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Dec 24, 1996
Grant Date -
N/A
app pub date -
Jun 27, 1994
filing date -
Jun 27, 1994
priority date (Note) -
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Abstract
A single-ply wound paperboard tube is disclosed as is its forming method. The method comprises applying an adhesive to a paperboard ply having relatively thin longitudinal edges and a relatively thick central portion therebetween, then spirally winding the ply about a mandrel in edge-overlapping relation. Preferably, the thinned edges and the thick central portion of the ply share a common face, and the ply is preferably steam-conditioned to raise its temperature and its moisture content prior to the application of the adhesive.
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