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1. 发明授权

US5599427A Twin-wire web former in a paper machine 失效
标题翻译：造纸机中的双网卷筒纸
公开(公告)号：US5599427A
公开(公告)日：1997-02-04
申请号：US850505
申请日：1992-03-13
申请人： Mauri Koivuranta , Michael Odell
发明人： Mauri Koivuranta , Michael Odell
IPC分类号： D21F1/48 , D21F9/00 , D21F1/00
CPC分类号： D21F9/003 , D21F1/48
摘要： The invention is related to a twin-wire web former in a paper machine having a covering wire and a carrying wire which form a twin-wire forming zone with one another. A discharge opening of a headbox feeds a pulp suspension jet into the forming gap defined between said wires. The forming gap is immediately followed immediately by a forming shoe provided with a curved guide deck. A draining unit or units is/are provided after the forming shoe, before the first forming roll. The draining unit/units comprise(s) a press/support unit which guides the wire placed in contact with it as a straight run. The draining unit or units further comprise(s) a draining equipment provided with suction and foil equipment and placed opposite to the press/support unit, which draining equipment removes a substantial amount of water out of the web.
摘要翻译：本发明涉及一种造纸机中的双线幅材成形机，其具有彼此形成双网形成区的覆盖线和承载线。流浆箱的排放口将纸浆悬浮液喷射进入限定在所述导线之间的成形间隙中。形成间隙立即紧随着设有弯曲导向板的成形靴。在第一成形辊之前，在成形靴之后设置排水单元。排水单元包括一个压力/支撑单元，其将作为直线运行的与其接触的导线引导。排水单元还包括设置有吸入和箔设备的排水设备并且与压榨/支撑单元相对放置，排水设备将大量的水从网中除去。

2. 发明授权

US4917766A Hybrid former for a paper machine 失效
标题翻译：混合机用于造纸机
公开(公告)号：US4917766A
公开(公告)日：1990-04-17
申请号：US209493
申请日：1988-06-20
申请人： Mauri Koivuranta , Michael Odell
发明人： Mauri Koivuranta , Michael Odell
IPC分类号： D21F9/02 , D21F1/48 , D21F9/00
CPC分类号： D21F9/003 , D21F1/48
摘要： Hybrid former for a paper machine which has a lower-wire loop forming a single-wire dewatering zone in which water is removed from a web being formed by a dewatering member situated inside the wire loop through the lower wire. The former also has an upper-wire unit which includes an upper-wire loop forming a second twin-wire dewatering zone after the first single-wire dewatering zone, together with a run of the lower wire. The former additionally includes a hollow-faced first forming roll fitted inside the upper-wire loop, at which the second, twin-wire dewatering zone starts, this zone being curved upwardly over a certain sector of this forming roll. A forming shoe is fitted inside the lower-wire loop after the forming roll and guides the second dewatering zone. This forming shoe is provided with a curved deck for guiding the lower-wire loop. Deflector units are fitted both inside the lower-wire loop and inside the upper-wire loop on the twin-wire dewatering zone between the first forming roll and the forming shoe. By way of these deflector units, sufficiently strong impulses improving the formation of a web are produced, which act upon the web that is being formed from both sides thereof.

3. 发明授权

US5215628A Twin-wire web former in a paper machine 失效
标题翻译：造纸机中的双线网页
公开(公告)号：US5215628A
公开(公告)日：1993-06-01
申请号：US754573
申请日：1991-09-04
申请人： Mauri Koivuranta , Michael Odell , Erkki Partanen , Lauri Verkasalo
发明人： Mauri Koivuranta , Michael Odell , Erkki Partanen , Lauri Verkasalo
IPC分类号： D21F9/00
CPC分类号： D21F9/003
摘要： A twin-wire web former in a paper machine includes a covering wire and a carrying wire defining a forming zone, at the beginning of which zone there is a forming gap into which the discharge opening of a headbox feeds a pulp suspension jet. A first forming roll is located on the twin-wire zone, in the area of the forming gap, on which the twin-wire zone is curved within a certain sector, followed by a dewatering unit(s), which is in turn followed by a second forming roll(s) in the twin-wire zone. Thereafter, the web is detached from the covering wire and passed on the carrying wire to a pick-up point. Between the first forming roll and the second forming roll(s), a dewatering unit(s) is provided which comprises a press-support unit which guides the wire that enters into contact with the unit as a straight run. The dewatering unit(s) also includes a dewatering equipment facing the press-support unit and provided with suction and foil equipment for removing a substantial amount of water out of the web. The magnitude of the twin-wire turning sector placed in connection with the first forming roll is within the range of from about 35.degree. to about 120.degree..
摘要翻译：造纸机中的双网幅材成型机，包括覆盖线（10）和承载线（20）。电线形成双网形成区域（A-B），在该区域（A-B）的开始处存在形成间隙（G），流浆箱（60）的排出口供给纸浆悬浮射流。在双线区域，在成形间隙（G）的区域中，存在第一成形辊（11; 21），双线区域在该第一成形辊（11; 21）内在某一扇区（a）内弯曲。之后是脱水单元（50）或单元（50A，50B），其后面是双网区域中的第二成形辊（24）或一组辊（14A，24A）。之后，将卷筒纸（W）从覆盖线（10）上分离出来，并在承载线（20）上传送到拾取点（P）。在本发明中，在第一成形辊（11; 21）和第二成形辊（24）或相应的一组辊（14A，24A）之间，脱水单元（50）或单元（50A，50B）提供。这些包括压力支撑单元（30），其引导与所述单元接触的线（10,20）作为直线。脱水单元（50）或单元（50A，50B）包括面向所述压榨和支撑单元（30）放置并设置有抽吸和箔设备的脱水设备（40），所述设备（40）去除大量的水离网（W）。与第一成形辊（11; 21）连接放置的双线转向扇区的幅度a在a = 5°〜120°的范围内，优选在a = 35°的范围内 55度。

4. 发明授权

US5074966A Gap former in a paper machine 失效
标题翻译：纸张机器中的GAP
公开(公告)号：US5074966A
公开(公告)日：1991-12-24
申请号：US602500
申请日：1990-10-24
申请人： Mauri Koivuranta
发明人： Mauri Koivuranta
IPC分类号： D21F9/00
CPC分类号： D21F9/003
摘要： A gap former in a paper machine, comprising a lower wire loop (10) and an upper wire loop (20), which together define a substantially horizontal twin wire forming zone, which comprises the following web forming zones (a), (b) and (c): (a) In the area of the forming gap (G), a first suction zone (11a) placed inside the first forming roll (11), and immediately thereafter a second suction zone (11b) is placed in forming roll (11). The suction zones (11a, 11b) are placed in the first upper quarter of the first forming roll (11) at the side of the forming gap (G). The levels of negative pressure (P.sub.1, P.sub.2) in the suction zones are adjustable. (b) A forming shoe (12), which is provided with an open guide deck (26), the interior space in the shoe being divided into at least two subsequent suction chambers (12a, 12b, 12c), the levels of negative pressure (P.sub.a, P.sub.b, P.sub.c) effective in said suction chambers being arranged to be adjustable, preferably separately adjustable. (c) Web-formation and/or guide members (13a, 13b, 17, 25) arranged after the forming shoe (12), the members guiding the twin wire zone downwards.

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