Title:
【発明の名称】インターミディエートカレンダ掛け機能を設けた抄紙機の乾燥部
Document Type and Number:
Japanese Patent JPH11504401
Kind Code:
A
Abstract:
The invention concerns a dryer section of a paper machine which is provided with one or several nips (NK;NKP) of intermediate calendering and in which dryer section there are several successive wire groups (R). The dryer section is primarily or exclusively composed of groups (R1...RV) with single-wire draw, in which the heated drying cylinders (20,20a) are placed in the upper row and the reversing suction cylinders (30,30a) or reversing suction rolls (30aa) are placed in the lower row. The groups (R1...RV) with single-wire draw comprise a drying wire (21) which runs along a meandering path over said drying cylinders (20,20a) and reversing suction cylinders or rolls so that the reversing suction cylinders (30,30a,30aa) remain inside the loop of the drying wire (21). Inside the group (Rn) with single-wire draw or in connection with the last drying cylinder (20a), a free space has been arranged, in which a calender roll (10;10P) is fitted, which forms a calendering nip (NK;NKP) together with the last-mentioned drying cylinder (20a), through which nip the paper web (W) to be dried is passed and, thus, calendered inside the dryer section. Further, five other embodiments of the invention are described.
Inventors:
Kuhasaro, Antti
Kaiho Birta, Juha
Riedes, Alan
Kaiho Birta, Juha
Riedes, Alan
Application Number:
JP53064897A
Publication Date:
April 20, 1999
Filing Date:
February 11, 1997
Export Citation:
Assignee:
Valmet Corporation
International Classes:
D21F5/04; D21G1/00; (IPC1-7): D21F5/04
Attorney, Agent or Firm:
Takao Katori