CA1170883A - Method and apparatus in the press section of a paper machine - Google Patents

Method and apparatus in the press section of a paper machine

Info

Publication number: CA1170883A
Authority: CA; Canada
Prior art keywords: web; press; sector; nips; interval
Prior art date: 1980-09-25
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

CA000386347A

Other languages

English (en)

French (fr)

Inventor

Antti Lehtinen

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Valmet Technologies Oy

Original Assignee

Valmet Oy

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1980-09-25

Filing date

1981-09-21

Publication date

1984-07-17

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8513807&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1170883(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1981-09-21 Application filed by Valmet Oy filed Critical Valmet Oy

1984-07-17 Application granted granted Critical

1984-07-17 Publication of CA1170883A publication Critical patent/CA1170883A/en

Status Expired legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 31
238000010438 heat treatment Methods 0.000 claims abstract description 98
230000000694 effects Effects 0.000 claims abstract description 45
230000009471 action Effects 0.000 claims abstract description 14
229920001131 Pulp (paper) Polymers 0.000 claims description 10
230000005670 electromagnetic radiation Effects 0.000 claims description 9
230000006872 improvement Effects 0.000 claims description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
238000001035 drying Methods 0.000 description 17
238000011282 treatment Methods 0.000 description 15
230000008901 benefit Effects 0.000 description 11
238000002474 experimental method Methods 0.000 description 10
230000005855 radiation Effects 0.000 description 10
230000001965 increasing effect Effects 0.000 description 9
238000012546 transfer Methods 0.000 description 8
229920002488 Hemicellulose Polymers 0.000 description 7
229920002678 cellulose Polymers 0.000 description 6
239000001913 cellulose Substances 0.000 description 6
239000000835 fiber Substances 0.000 description 6
238000004519 manufacturing process Methods 0.000 description 5
238000010586 diagram Methods 0.000 description 4
150000002500 ions Chemical class 0.000 description 4
238000003825 pressing Methods 0.000 description 4
239000000945 filler Substances 0.000 description 3
229920005610 lignin Polymers 0.000 description 3
241000950638 Symphysodon discus Species 0.000 description 2
230000009286 beneficial effect Effects 0.000 description 2
238000009833 condensation Methods 0.000 description 2
230000005494 condensation Effects 0.000 description 2
238000010276 construction Methods 0.000 description 2
230000001627 detrimental effect Effects 0.000 description 2
230000002708 enhancing effect Effects 0.000 description 2
239000011121 hardwood Substances 0.000 description 2
238000012360 testing method Methods 0.000 description 2
YSGSDAIMSCVPHG-UHFFFAOYSA-N valyl-methionine Chemical compound CSCCC(C(O)=O)NC(=O)C(N)C(C)C YSGSDAIMSCVPHG-UHFFFAOYSA-N 0.000 description 2
KFYRPLNVJVHZGT-UHFFFAOYSA-N Amitriptyline hydrochloride Chemical compound Cl.C1CC2=CC=CC=C2C(=CCCN(C)C)C2=CC=CC=C21 KFYRPLNVJVHZGT-UHFFFAOYSA-N 0.000 description 1
241000905957 Channa melasoma Species 0.000 description 1
ZAKOWWREFLAJOT-CEFNRUSXSA-N D-alpha-tocopherylacetate Chemical compound CC(=O)OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C ZAKOWWREFLAJOT-CEFNRUSXSA-N 0.000 description 1
206010027374 Mental impairment Diseases 0.000 description 1
101150094640 Siae gene Proteins 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
101710097943 Viral-enhancing factor Proteins 0.000 description 1
230000001154 acute effect Effects 0.000 description 1
230000001464 adherent effect Effects 0.000 description 1
230000002457 bidirectional effect Effects 0.000 description 1
239000000470 constituent Substances 0.000 description 1
230000002844 continuous effect Effects 0.000 description 1
238000013461 design Methods 0.000 description 1
238000007599 discharging Methods 0.000 description 1
238000009826 distribution Methods 0.000 description 1
230000005611 electricity Effects 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
-1 groundwood Polymers 0.000 description 1
238000007731 hot pressing Methods 0.000 description 1
HOQADATXFBOEGG-UHFFFAOYSA-N isofenphos Chemical compound CCOP(=S)(NC(C)C)OC1=CC=CC=C1C(=O)OC(C)C HOQADATXFBOEGG-UHFFFAOYSA-N 0.000 description 1
239000000463 material Substances 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
239000002674 ointment Substances 0.000 description 1
230000008569 process Effects 0.000 description 1
230000009467 reduction Effects 0.000 description 1
238000000926 separation method Methods 0.000 description 1
239000011122 softwood Substances 0.000 description 1
239000004575 stone Substances 0.000 description 1
239000000126 substance Substances 0.000 description 1
229910021653 sulphate ion Inorganic materials 0.000 description 1
230000032258 transport Effects 0.000 description 1

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof

Landscapes

Paper (AREA)

CA000386347A 1980-09-25 1981-09-21 Method and apparatus in the press section of a paper machine Expired CA1170883A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FI803021A FI803021A7 (fi)	1980-09-25	1980-09-25	Menetelmä paperikoneen puristinosassa.
FI803021		1980-09-25

Publications (1)

Publication Number	Publication Date
CA1170883A true CA1170883A (en)	1984-07-17

Family

ID=8513807

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000386347A Expired CA1170883A (en)	1980-09-25	1981-09-21	Method and apparatus in the press section of a paper machine

Country Status (6)

Country	Link
EP (1)	EP0060878B1 (it)
CA (1)	CA1170883A (it)
ES (1)	ES505752A0 (it)
FI (1)	FI803021A7 (it)
IT (1)	IT1138640B (it)
WO (1)	WO1982001203A1 (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI75382C (fi) *	1982-08-24	1988-06-09	Valmet Oy	Pressparti utan pressugvals i pappersmaskin.
AT394739B (de) *	1989-06-09	1992-06-10	Andritz Ag Maschf	Vorrichtung zur entwaesserung einer zellstoffbahn bzw. einer materialbahn fuer eine pappenerzeugung
US5082533A (en) *	1990-04-10	1992-01-21	Beloit Corporation	Heated extended nip press with porous roll layers
DE19941295A1 (de) *	1999-08-31	2001-03-01	Giesecke & Devrient Gmbh	Sicherheitselement
DE102005050281A1 (de) *	2005-10-20	2007-04-26	Voith Patent Gmbh	Pressanordnung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2209761A (en) *	1938-05-31	1940-07-30	Beloit Iron Works	Process and apparatus for drying webs
US4163688A (en) *	1972-11-30	1979-08-07	Valmet Oy	Apparatus for dewatering in a paper machine

1980
- 1980-09-25 FI FI803021A patent/FI803021A7/fi not_active Application Discontinuation
1981
- 1981-09-21 CA CA000386347A patent/CA1170883A/en not_active Expired
- 1981-09-22 EP EP81902752A patent/EP0060878B1/en not_active Expired
- 1981-09-22 WO PCT/FI1981/000074 patent/WO1982001203A1/en not_active Ceased
- 1981-09-24 ES ES505752A patent/ES505752A0/es active Granted
- 1981-09-25 IT IT24168/81A patent/IT1138640B/it active

Also Published As

Publication number	Publication date
EP0060878A1 (en)	1982-09-29
IT8124168A0 (it)	1981-09-25
IT1138640B (it)	1986-09-17
EP0060878B1 (en)	1985-06-05
ES8302147A1 (es)	1983-01-01
WO1982001203A1 (en)	1982-04-15
FI803021A7 (fi)	1981-01-01
ES505752A0 (es)	1983-01-01

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Legal Events

Date	Code	Title	Description
2001-07-18	MKEC	Expiry (correction)
2001-09-21	MKEX	Expiry