发明名称 |
DISPERSIBLE NONWOVEN FABRIC AND METHOD OF MAKING SAME |
摘要 |
A soft, absorbent nonwoven fibrous web, such as a wet wipe, capable of dispersing in an aqueous environment into unrecognizable pieces, made by a method comprising the steps of forming a wet-laid nonwoven web from an aqueous slurry of fibers; hydraulically needling the wet-laid nonwoven web; partially drying the hydraulically needled web; applying a binder composition to one side of the web; creping the web such that interfiber adhesion is disrupted and z-direction fiber orientation is introduced; optionally applying a binder composition to the second side of the web; recreping the web; drying and curing the web; and, converting the dried and cured web into a wet wipe, dry wipe, or other absorbent article. In the case of a wet wipe, a solution containing about 100 ppm of calcium ion is applied to the web, such as in a preserving solution. In the case of a dry wipe, the calcium ion is added after the binder is added to the web, and the final product is stored in a dry state. The combination of processes produces a web having desirable tensile strength, bulk and softness during storage and use, yet will disperse in an aqueous environment into unrecognizable pieces. |
申请公布号 |
EP0972100(B1) |
申请公布日期 |
2003.02.26 |
申请号 |
EP19980913355 |
申请日期 |
1998.03.31 |
申请人 |
KIMBERLY-CLARK WORLDWIDE, INC. |
发明人 |
WANG, KENNETH, Y.;DEMENY, LEROY, M.;POMPLUN, WILLIAM, S.;MUMICK, PAVNEET, S.;ANDERSON, RALPH, L.;MERKER, JOSEPH, F. |
分类号 |
D04H1/04;D04H1/42;D04H1/46;D04H1/64;D21H11/12;D21H13/08;D21H13/14;D21H13/24;D21H17/37;D21H17/66;D21H25/00 |
主分类号 |
D04H1/04 |
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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