发明名称 |
MULTI-PLY WEB OF FLEXIBLE MATERIAL, SUCH AS TISSUE PAPER OR NONWOVEN, AND PRODUCT, AND METHOD FOR IMPROVING THE BLEED FASTNESS OF A FLUORESCENT WHITENING AGENT OF A MULTI-PLY WEB |
摘要 |
<p>A multi-ply web of flexible material, such as tissue paper or nonwoven material, includes a fluorescent whitening agent. The multi-ply web includes at least two plies being interconnected in one or more adhesive interconnection zones with an adhesive composition including polyvinyl alcohol, a polyaldehyde and an acid catalyst. The polyvinyl alcohol is cross-linked with the polyaldehyde such that the adhesive composition is water insoluble. Also described is a method for improving the bleed fastness of a fluorescent whitening agent of a multi-ply web of flexible material, which includes at least two plies being interconnected in one or more adhesive interconnection zones with an adhesive composition including polyvinyl alcohol. The method includes a step of incorporating a polyaldehyde and an acid catalyst in the adhesive composition so as to cross-link the polyvinyl alcohol with the polyaldehyde such that the adhesive composition is made water insoluble.</p> |
申请公布号 |
EP2250317(A1) |
申请公布日期 |
2010.11.17 |
申请号 |
EP20080724202 |
申请日期 |
2008.03.07 |
申请人 |
SCA HYGIENE PRODUCTS AB |
发明人 |
LINDQVIST, DAVID |
分类号 |
D21H27/32;B32B7/12;B32B27/04;B32B27/10;B32B29/00;B32B37/12;C09J129/04;D21H21/30 |
主分类号 |
D21H27/32 |
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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