发明名称 |
PROCESS FOR COATING OF PAPER AND BOARD |
摘要 |
The present invention concerns a process and a coating colour for coating a cellulosic web. According to the process an aqueous coating colour is applied on the surface of the web. The invention comprises using a coating colour which contains an aqueous polymer whose viscosity in an aqueous solution increases when the temperature rises. Preferably, methylcellulose or a corresponding polymer having a gelling temperature of about 5 to 10 .degree.C more than the application tempature of the coating colour is used. The temperature of the coating is increased after the application of the coating colour in orde r to achieve gelling of the polymer. As a result, the coating colour rapidly solidifies which decreases the amount of mixture being recycled and it reduces mist-formation in the film press method and improves coverage of coating applied by conventional blade coating.</SDO AB>
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申请公布号 |
CA2226773(C) |
申请公布日期 |
2004.12.14 |
申请号 |
CA19982226773 |
申请日期 |
1998.01.13 |
申请人 |
METSA-SERLA OY |
发明人 |
SILENIUS, PETRI;KETTUNEN, JYRKI;RUTANEN, ANNE |
分类号 |
B05D3/02;B05D3/12;B05D7/00;B05D7/24;D21H19/52;D21H19/58;D21H19/60;D21H23/30;D21H25/06;(IPC1-7):D21H19/52;D21H23/24;D21H23/34;D21H23/56 |
主分类号 |
B05D3/02 |
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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