The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2010
Filed:
Feb. 17, 2006
Tom T. H. Kim, Coquitlam, CA;
Charles W. Lounsbury, Jr., Florence, SC (US);
David E. Rhodes, Hartsville, SC (US);
Garrett N. Smith, Hartsville, SC (US);
Johannes Wim Van DE Camp, Hartsville, SC (US);
Tom T. H. Kim, Coquitlam, CA;
Charles W. Lounsbury, Jr., Florence, SC (US);
David E. Rhodes, Hartsville, SC (US);
Garrett N. Smith, Hartsville, SC (US);
Johannes Wim van de Camp, Hartsville, SC (US);
Sonoco Development, Inc., Hartsville, SC (US);
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.