发明名称 |
WATER-RESISTANT WOUND PAPERBOARD TUBE |
摘要 |
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. |
申请公布号 |
CA2640719(C) |
申请公布日期 |
2011.12.06 |
申请号 |
CA20072640719 |
申请日期 |
2007.02.13 |
申请人 |
SONOCO DEVELOPMENT, INC. |
发明人 |
KIM, TOM T. H.;LOUNSBURY, CHARLES W., JR.;RHODES, DAVID E.;SMITH, GARRETT N.;VAN DE CAMP, JOHANNES WIM |
分类号 |
D21H21/16;B31C11/04;B31F5/04 |
主分类号 |
D21H21/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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