发明名称 METHOD FOR THE MANUFACTURE OF PAPER, AND PAPER MACHINE LINE
摘要 The present invention relates to a method for the manufacture of paper, in particular of fine paper. In the method, paper stock is fed from a headbox (100) to a wire section (200) to drain water from a paper web, the paper web (W) is passed from the wire section (200) to a press section (300) to press water out of the paper web (W), after the press section (300), the paper web (W) is dried in a dryer section (400), precalendered and precoated in a precoater (600), after which the paper web (W) is dried and coated, after which the paper web (W) is dried, calendered and reeled. In accordance with the invention, in the method, the stock is fed into the headbox (100) from a short circulation the stock volume of which has been minimized, water is removed from the paper web (W) most advantageously in a gap former (250), in the press section (300) water is pressed out of the paper web (W) in an extended nip press (360), in the dryer section (400) impingement drying (450) is employed for the drying of the paper web (W), the paper web (W) is precalendered in a calender (900) employing low nip loads, both surfaces of the paper web (W) are precoated at the same time, after precoating (500) the paper web (W) is dried by means of contact-free drying (660), the paper web (W) is coated in an on-line coating station/stations (700, 800), after which the paper web (W) is at least partly dried in a drying section/sections (750, 850) by means of contact-free drying of the paper web (W), and the paper web (W) is calendered in an on-line calender (900) while the linear load in each nip is regulated separately. The invention also relates to a paper machine line in particular for the manufacture of fine paper.
申请公布号 WO0070144(A1) 申请公布日期 2000.11.23
申请号 WO2000FI00419 申请日期 2000.05.10
申请人 VALMET CORPORATION;RAUTIAINEN, PENTTI 发明人 RAUTIAINEN, PENTTI
分类号 D21F9/00;D21F9/02;D21F11/00;(IPC1-7):D21F11/00 主分类号 D21F9/00
代理机构 代理人
主权项
地址