发明名称 |
Process and apparatus for treating a web of paper or board |
摘要 |
<p>The functional coating is applied contactlessly, followed by satining (a glossing process) of the coated web. Satining is effected in a wide nip shoe-calender (9). (A wide nip (18) is a nip prolonged by pronounced indentation under pressure). The calender has a rotary shoe roller (10) with outer covering (11) around it, operating against a counter-roller (14). The nip temperature is held below 60 deg. C. With a wide nip length of at least 40 mm, the stretching load is set to 600 N/mm at most. - The casing of the shoe roller is held fixed and the counter-roller is pressed into it. A curtain coater (4) applies the functional coating, which is thermo-sensitive. Web speed through the nip is 900-1300 m/min. Pressure applied in the nip compresses web thickness by 2.5% at most. An INDEPENDENT CLAIM is included for corresponding equipment.</p> |
申请公布号 |
EP1593778(B1) |
申请公布日期 |
2011.10.05 |
申请号 |
EP20050101506 |
申请日期 |
2005.02.28 |
申请人 |
VOITH PATENT GMBH |
发明人 |
RHEIMS, JOERG DR.;ROTHFUSS, ULRICH |
分类号 |
D21H25/14;B05D1/30;D21G1/00;D21H23/46;D21H23/50 |
主分类号 |
D21H25/14 |
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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