Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2006-02-17
2010-11-30
Miggins, Michael C (Department: 1782)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
C428S034100, C428S034200, C428S034300, C428S036900, C428S343000
Reexamination Certificate
active
07842362
ABSTRACT:
A wound paperboard tube having enhanced burst strength in high-moisture conditions up to and including complete and prolonged submersion in liquid water comprises a plurality of paperboard plies formed from a pulp comprising papermaking furnish and an effective amount of a size such that the paperboard plies have reduced moisture add-on when submerged in water, relative to paperboard plies formed from a pulp comprising the identical furnish but without the size. The plies are wound one upon another about an axis of the tube and adhered together with a water-resistant adhesive comprising a polyvinyl composition containing a cross-linking agent for inducing cross-linking of the adhesive.
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Kim Tom T. H.
Lounsbury, Jr. Charles W.
Rhodes David E.
Smith Garrett N.
van de Camp Johannes Wim
Alston & Bird LLP
Miggins Michael C
Sonoco Development Inc.
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