发明名称 METHOD AND APPARATUS FOR HANDLING A PAPER OR BOARD WEB
摘要 A method for treating a web of paper or board with a wetting substance or calendering the web prior to the cylinder dryer section of a paper- or boardmaking machine while the solids content of the web is still very low, typically in the range of 10 - 60 %, wherein the web can be conveyed when so desired fully supported from the wire section of the paper- or board making machine up to the winder, while simultaneously utilizing the quality benefit s obtained from a controlled reduction of the web moisture content and dewatering of the same. The web is conveyed supported by a transfer belt (9) through at least one web surface treatment apparatus such as a coater statio n (S1B) or a calender prior to passing the web to the first dryer cylinder gro up (1) of the paper- or boardmaking machine. One nip (11, 13) supported by a transfer belt (9) is suitable for dewatering simultaneously with the application of a treatment substance to the web. The dewatering nip (11, 13) may be formed between a transfer belt (9) and the wire (2) of the wire secti on or the felt (14) of the press section.
申请公布号 CA2365989(A1) 申请公布日期 2000.09.21
申请号 CA20002365989 申请日期 2000.03.10
申请人 METSO PAPER, INC. 发明人 RANTANEN, RAUNO;KORHONEN, HANNU
分类号 D21H23/50;D21H23/28;(IPC1-7):D21H23/28 主分类号 D21H23/50
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