发明名称 |
Absorbent sheet having regenerated cellulose microfiber network |
摘要 |
An absorbent paper sheet for tissue or towel includes from about 99 percent to about 70 percent by weight of cellulosic papermaking fiber and from about 1 percent to about 30 percent by weight fibrillated regenerated cellulose microfiber which was regenerated form a cellulosic dope utilizing a tertiary amine N-oxide solvent or an ionic liquid. Fibrillation of the microfiber is controlled such that it has a reduced coarseness and a reduced freeness as compared with unfibrillated regenerated cellulose microfiber from which it is made and provides at least one of the following attributes to the absorbent sheet: (a) the absorbent sheet exhibits an elevated SAT value and an elevated wet tensile value as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (b) the absorbent sheet exhibits an elevated wet/dry CD tensile ratio as compared with a like sheet prepared without fibrillated regenerated cellulose microfiber; (c) the absorbent sheet exhibits a lower GM Break Modulus than a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber; or (d) the absorbent sheet exhibits an elevated bulk as compared with a like sheet having like tensile values prepared without fibrillated regenerated cellulose microfiber. In some embodiments, the pulp is pre-treated with debonder to enhance the wet/dry CD tensile ratio of the sheet. |
申请公布号 |
US8216425(B2) |
申请公布日期 |
2012.07.10 |
申请号 |
US201113159771 |
申请日期 |
2011.06.14 |
申请人 |
SUMNICHT DANIEL W.;KOKKO BRUCE J.;GEORGIA-PACIFIC CONSUMER PRODUCTS LP |
发明人 |
SUMNICHT DANIEL W.;KOKKO BRUCE J. |
分类号 |
D21H13/08;D02G3/00;D21C9/00 |
主分类号 |
D21H13/08 |
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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