EP 0043289 A3 19820120 - METHOD AND APPARATUS FOR MANUFACTURING PAPER AND PAPERBOARD
Title (en)
METHOD AND APPARATUS FOR MANUFACTURING PAPER AND PAPERBOARD
Publication
Application
Priority
GB 8021673 A 19800702
Abstract (en)
[origin: EP0043289A2] In the manufacture of paper or paperboard, a web of fibrous cellulosic material is wet-formed on an endless foraminous forming band (11), is partially dewatered in a vacuum dewatering stage (13) and is then dried. In order to improve drying of the web and reduce energy consumption and space utilization, the partially dewatered web is subjected to a press-drying stage whilst supported by the forming band (11). In this press-drying stage, the web and band are advanced through a plurality of pressure nips (15-24) provided between two rotating heated drying cylinders (18,25) and a plurality of cooperating pressure rollers (19-28), and the web is pressed into contact with the circumferences of the cylinders between the pressure nips by the forming band (11).
IPC 1-7
IPC 8 full level
D21F 5/02 (2006.01); D21F 1/00 (2006.01); D21F 3/02 (2006.01); D21F 9/02 (2006.01); D21F 11/04 (2006.01); D21F 11/14 (2006.01)
CPC (source: EP)
D21F 3/0281 (2013.01); D21F 11/04 (2013.01); D21F 11/14 (2013.01); D21H 5/2685 (2013.01); D21H 25/04 (2013.01)
Citation (search report)
- [X] US 3041235 A 19620626 - ALLEN LEE CHARLES
- [X] GB 720165 A 19541215 - JOSEPH WINTERBURN, et al
- GB 1073063 A 19670621 - PROCTER & GAMBLE
- DE 2721146 A1 19781116 - SCHMIDT ERWEPA MASCHF
- GB 1428401 A 19760317 - WALMSLEYS BURY LD
- [PD] GB 2052586 A 19810128 - ST ANNES BOARD MILL CO LTD
- [A] DE 2437611 A1 19760226 - BASF AG
- [A] DE 239933 C
Designated contracting state (EPC)
AT BE CH DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0043289 A2 19820106; EP 0043289 A3 19820120; FI 812060 L 19820103; JP S5739296 A 19820304
DOCDB simple family (application)
EP 81302997 A 19810701; FI 812060 A 19810701; JP 10435581 A 19810702