Title:
【発明の名称】多層紙形成装置
Document Type and Number:
Japanese Patent JP3064134
Kind Code:
B2
Abstract:
The present invention is to manufacture paper layer with high grammage and good, formation even in lower speed by making direction of hydration of a fixed type dehydrator having a curvature at least partly downward so as not to reverse to the gravity and making dehydrating capacity larger with small vacuum value. The device includes a looped endless felt 5 and at least two short wire units provided thereunder and having a fixed type dehydrator 2 with a curvature at least partly and the short wire 4. The endless felt 5 touches the short wire 4 on the curvature of each fixed type dehydrator 2, and the paper layers are formed and combined by hydrating stock while the stock from the head box 1 and spouted on the short wire 4 is held and moved between the endless felt and the short wire. Each of forming roll 10, couch roll 11 and a felt roll 12 have a construction movable vertically. By raising the endless felt 5 by the felt roll 12, touch between the short wire unit at the upstream of the felt roll 12 and the endless felt 5 is released and also replacement of short wire 4 in such short wire unit can be made easily under operation.
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Inventors:
Kazuo Kunihisa
Hiroto Shimazu
Takashi Bando
Tokuno Masateru
Hiroto Shimazu
Takashi Bando
Tokuno Masateru
Application Number:
JP2082393A
Publication Date:
July 12, 2000
Filing Date:
January 14, 1993
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
S.K.Engineering Co., Ltd.
S.K.Engineering Co., Ltd.
International Classes:
D21F1/48; D21F9/00; D21F11/00; D21F11/04; (IPC1-7): D21F11/04
Domestic Patent References:
| JP6241393A | ||||
| JP4630447B1 |
Attorney, Agent or Firm:
Mitsuru Oba (3 outside)
Mitsuru Oba (2 outside)
Mitsuru Oba (2 outside)