发明名称 |
BULKY PAPER WITH RUGGED PATTERN AND PROCESS FOR PRODUCING THE SAME |
摘要 |
The present invention relates to a process for producing a bulky paper with a concavo-convex pattern consisting of low density regions with a high degree of expansion of the heat-expanding particles and high density regions with a low degree of expansion of the heat-expanding particles, comprising: making a wet mixed sheet having heat-expanding particles uniformly dispersed in fibers from a paper-making material prepared by dispersing a fiber starting material and heat-expanding particles in water; then spraying prescribed sections of the wet mixed sheet with moist hot air or water vapor at above the initial expansion temperature of the heat-expanding particles to cause expansion of the heat-expanding particles at those sections; and then drying at a temperature at which the heat-expanding particles do not fully expand. The process allows free designing of concavo-convex sections on bulky papers. |
申请公布号 |
EP2292839(A4) |
申请公布日期 |
2014.01.29 |
申请号 |
EP20090754551 |
申请日期 |
2009.04.28 |
申请人 |
UNICHARM CORPORATION |
发明人 |
NOZAKI, SATOSHI;SHIRAI, TSUTOMU |
分类号 |
D21H21/56;D21H25/04;D21H25/16;D21H27/02 |
主分类号 |
D21H21/56 |
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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