EP0194602A1 - EIne Methode zur Herstellung eines endlosen Bandes mit glatter Innenoberfläche zur Verwendung für eine Walze mit verlängertem Prepspalt zur Papierherstellung - Google Patents

EIne Methode zur Herstellung eines endlosen Bandes mit glatter Innenoberfläche zur Verwendung für eine Walze mit verlängertem Prepspalt zur Papierherstellung Download PDF

Info

Publication number
EP0194602A1
EP0194602A1 EP86103042A EP86103042A EP0194602A1 EP 0194602 A1 EP0194602 A1 EP 0194602A1 EP 86103042 A EP86103042 A EP 86103042A EP 86103042 A EP86103042 A EP 86103042A EP 0194602 A1 EP0194602 A1 EP 0194602A1
Authority
EP
European Patent Office
Prior art keywords
belt
base
endless belt
mold
mandrel
Prior art date
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.)
Granted
Application number
EP86103042A
Other languages
English (en)
French (fr)
Other versions
EP0194602B1 (de
Inventor
William H. Dutt
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.)
Albany International Corp
Original Assignee
Albany International Corp
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.)
Filing date
Publication date
Application filed by Albany International Corp filed Critical Albany International Corp
Priority to AT86103042T priority Critical patent/ATE54347T1/de
Publication of EP0194602A1 publication Critical patent/EP0194602A1/de
Application granted granted Critical
Publication of EP0194602B1 publication Critical patent/EP0194602B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • 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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • D21F3/0236—Belts or sleeves therefor manufacturing methods

Definitions

  • the field of the invention relates to impermeable belts with smooth inner surfaces and more particularly to a belt used in an extended press nip for dewatering a fibrous web formed in a papermaking machine.
  • a web is formed by depositing a fibrous slurry on a forming wire. A large amount of water is drained from the slurry during this process, after which the newly formed web proceeds to a press section-
  • the press section includes a series of press nips.
  • the web finally proceeds to a drying section including heated dryer drums where the water content is reduced to a desirable level.
  • the web In using extended press nips to dewater a fibrous web, the web has typically been sandwiched between two moisture absorbing felts and a belt
  • the felts are trained around a cylindrical press roll with the web between them while the belt is arranged for applying pressure to the felts and roll.
  • a pressure shoe exerts pressure on the belt in the press area.
  • the belt is provided with a very smooth surface for contacting the shoe so that it can transfer pressure to the felts and the fibrous webs without overheating or wearing away. Furthermore the belt must be impermeable to oil used to lubricate its passage over the shoe which could contaminate the felts and the web.
  • the belt was made by applying a polymer coating to the outer surface of an endless fabric. Since the belt is arranged so that its inner surface is the shoe-contacting surface, the endless coated fabric is then reversed (i.e. turned inside out). While this procedure was satisfactory for belts having a length of 24 feet or more, it has been found that it is difficult to reverse belts having a length of less than 24 feet Furthermore it was found that it was difficult to apply the coating to the outer surface of shorter belts.
  • An objective of the present invention is to provide a relatively short belt with a smooth inner surface, adapted to be used in an extended press nip.
  • Another objective is to provide a belt which is impermeable to oil.
  • a further objective is to provide a method of producing the above-mentioned belt
  • a belt is constructed of an endless base fabric embedded in a polymeric substance formed with a smooth, frictionless inner surface.
  • the belt is made by providing a mandrel with a smooth outer surface, placing the endless base fabric on said mandrel covering with an outer shell, and then impregnating the base fabric with a polymer. As the polymer solidifies the outer surface of the mandrel forms a smooth inner polymer surface.
  • An extended press nip is provided by the invention for dewatering a travelling web of material.
  • the nip 10 is defined by a cylindrical press roll 12, a pressure shoe 14 having an arcuate surface facing the press roll, and a belt 16 arranged such that it bears against the surface of the press roll.
  • the arcuate surface of the pressure shoe has about the same radius of curvature as the press roll.
  • the distance between the press roll and the pressure shoe may be adjusted by means of conventional hydraulic or mechanical apparatus (not shown) connected to a rod 18 pivotally secured to the shoe 14. The rod may also be actuated to apply the desired pressure to the shoe.
  • the pressure shoe and press roll described above as shown in Figures 1-2 are conventional and that other arrangements are also well known in the art.
  • Paper web 2 4 is carried to and away from the nip by a first felt 26.
  • a second felt 28 is used to absorb the water expressed from web 24 in the nip.
  • a lubricating means 30 is used to apply a lubricant such as oil to the inner surface 16' of belt 16 to further reduce friction between said inner surface and shoe 1 4 .
  • the belt is entrained by rollers 32 used to drive the belt in a predetermined path as shown.
  • the belt 16 employed in accordance with the invention is shown in detail in Figure 3. It has proven to be superior to belts currently known to the art both from an operational standpoint and for manufacturing considerations.
  • the belt 16 comprises a base fabric 34 which is impregnated with a polymeric material 36.
  • Thermosetting resins such as polyurethanes have been found to be suitable impregnating materials. Preferably a 100% polyurethane resin should be used to avoid formation of bubbles during the curing of the belt structure.
  • Thermoplastic polymers such as polypropylene are also acceptable.
  • the base fabric 34 is sufficiently open to allow total impregnation. This eliminates the possibility of any voids forming in the final fabric which would allow the lubrication used between the belt and shoe to pass through the belt and contaminate the felt and fibrous web. It is endless in final construction and uniform in thickness.
  • the fabric must also be made to have sufficient stability under paper machine conditions. In other words, it must have length stability, width stability, and guideability.
  • the base fabric may comprise a single or multi-layered flat woven fabric which has been heat stabilized and joined using normal joining techniques.
  • the base fabric may be made of polyester or other polymeric materials having the necessary properties in accordance with the invention.
  • the base may be made endless by endless weaving also.
  • At least one of the sides or surfaces of the belt, such as side 16', is smooth for contacting the pressure shoe 14.
  • Belts manufactured in accordance with the invention have been found to have many desirable characteristics. They move easily over the pressure shoe and are capable of transmitting pressure from the shoe to the web and press roll. Sufficient flexibility is obtained, and the belts have proven to be unaffected by lubricant applied prior to entering the press nip.
  • the belt is manufactured in a cylindrical mold 38 - ( Figure 4) with an outer shell 39 and a concentric mandrel 42.
  • the mandrel is provided with a smooth outer surface 40.
  • the spacing between the outer shell 39 of the mold and the inner mandrel determines the thickness or caliper of the belt.
  • the base fabric 32 is first placed on the smooth mandrel surface 4 0 and then the mold 38 is hermetically sealed with cover 44.
  • the pressure within the mold is reduced 6y substantially removing the air contained therein via a pipe 46 connected to a vacuum source (not shown): After the pressure within the mold has been reduced, an appropriate polymer is injected into the mold through pipe 48.
  • the polymer quickly fills the mold including the interstices of the fabric.
  • a smooth inner polymer surface is formed along the mandrel surface 4 0.
  • the polymer is crosslinked by applying heat to the mold. After the polymer has cured the fininshed belt may be removed from the mold.
  • a polymer catalyst mixture may be used which is self cross linking if left undisturbed several hours.
  • the resulting belt is shown in Figure 3, with the fabric 34 being fully impregnated with and impermeable to oil and other substances.
  • the belt has a uniform caliper as a result of the molding operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Making Paper Articles (AREA)
  • Belt Conveyors (AREA)
EP86103042A 1985-03-13 1986-03-07 EIne Methode zur Herstellung eines endlosen Bandes mit glatter Innenoberfläche zur Verwendung für eine Walze mit verlängertem Prepspalt zur Papierherstellung Expired - Lifetime EP0194602B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103042T ATE54347T1 (de) 1985-03-13 1986-03-07 Eine methode zur herstellung eines endlosen bandes mit glatter innenoberflaeche zur verwendung fuer eine walze mit verlaengertem prepspalt zur papierherstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71145485A 1985-03-13 1985-03-13
US711454 1985-03-13

Publications (2)

Publication Number Publication Date
EP0194602A1 true EP0194602A1 (de) 1986-09-17
EP0194602B1 EP0194602B1 (de) 1990-07-04

Family

ID=24858156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103042A Expired - Lifetime EP0194602B1 (de) 1985-03-13 1986-03-07 EIne Methode zur Herstellung eines endlosen Bandes mit glatter Innenoberfläche zur Verwendung für eine Walze mit verlängertem Prepspalt zur Papierherstellung

Country Status (10)

Country Link
EP (1) EP0194602B1 (de)
JP (1) JPS61258715A (de)
AT (1) ATE54347T1 (de)
BR (1) BR8506360A (de)
CA (1) CA1282270C (de)
DE (1) DE3672359D1 (de)
FI (1) FI86315C (de)
MX (1) MX162003A (de)
NO (1) NO167097C (de)
ZA (1) ZA859176B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619049A1 (fr) * 1987-08-07 1989-02-10 Albany Int Corp Procede de fabrication d'une courroie de presse de machine a papier
EP0389674A2 (de) * 1989-03-25 1990-10-03 F. Oberdorfer Siebtechnik GmbH Pressband für eine Presseinrichtung
US5427653A (en) * 1991-05-24 1995-06-27 Albany Nord Skafilt Ab Press and method for modifying a press for use in the press section of a papermaking machine
US5507899A (en) * 1991-04-15 1996-04-16 Yamauchi Corporation Method of manufacturing an endless belt for a dewatering press
DE19537182A1 (de) * 1995-10-06 1997-04-10 Wuertt Filztuchfab Preßvorrichtung mit verlängerter Preßzone
US5792323A (en) * 1995-09-07 1998-08-11 Albany International Corp. Spiral base structres for long nip paper machine press belts
US6752908B2 (en) 2001-06-01 2004-06-22 Stowe Woodward, Llc Shoe press belt with system for detecting operational parameters
US7014733B2 (en) 2002-05-14 2006-03-21 Stowe Woodward L.L.C. Belt for shoe press and shoe calender and method for forming same
US7014734B2 (en) * 2001-04-18 2006-03-21 Stowe Woodward Ag Shoe press belt

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5201978A (en) * 1988-04-08 1993-04-13 Beloit Technologies, Inc. Method of fabricating a blanket for an extended nip press

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106557A (en) * 1981-09-24 1983-04-13 Albany Int Corp Dewatering press and belt therefor
DE3318984A1 (de) * 1983-05-25 1984-11-29 Fa. F. Oberdorfer, 7920 Heidenheim Herstellungsverfahren fuer zugfeste, undurchlaessige, biegsame baender insbesondere fuer pressen zum entwaessern von faserstoffbahnen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133157A (ja) * 1974-09-13 1976-03-22 Bando Chemical Ind Shoonseimasatsudendoberuto no seizohoho
DE2844907C3 (de) * 1978-10-14 1981-08-13 Fa. Carl Freudenberg, 6940 Weinheim Verfahren zur Herstellung eines Lieferwerksriemchens
JPS5954598U (ja) * 1982-10-01 1984-04-10 市川毛織株式会社 抄紙機の広巾ニツププレス用加圧ベルト
JPS59100789A (ja) * 1982-12-02 1984-06-11 アルバニ−・インタナシヨナル・コ−ポレ−シヨン 脱水プレス
JPS59192794A (ja) * 1983-04-15 1984-11-01 市川毛織株式会社 抄紙機の面圧ニツププレス用加圧ベルト及びその製造方法
JPH07101698B2 (ja) * 1989-07-25 1995-11-01 日本電気株式会社 樹脂封止型半導体装置の製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106557A (en) * 1981-09-24 1983-04-13 Albany Int Corp Dewatering press and belt therefor
DE3318984A1 (de) * 1983-05-25 1984-11-29 Fa. F. Oberdorfer, 7920 Heidenheim Herstellungsverfahren fuer zugfeste, undurchlaessige, biegsame baender insbesondere fuer pressen zum entwaessern von faserstoffbahnen

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619049A1 (fr) * 1987-08-07 1989-02-10 Albany Int Corp Procede de fabrication d'une courroie de presse de machine a papier
BE1003631A3 (fr) * 1987-08-07 1992-05-12 Albany Int Corp Procede pour fabriquer une bande de presse de machine a papier.
EP0389674A2 (de) * 1989-03-25 1990-10-03 F. Oberdorfer Siebtechnik GmbH Pressband für eine Presseinrichtung
EP0389674A3 (de) * 1989-03-25 1991-02-27 F. Oberdorfer Siebtechnik GmbH Pressband für eine Presseinrichtung
US6337112B1 (en) 1991-04-15 2002-01-08 Yamauchi Corporation Endless belt for dewatering press
US5507899A (en) * 1991-04-15 1996-04-16 Yamauchi Corporation Method of manufacturing an endless belt for a dewatering press
US5427653A (en) * 1991-05-24 1995-06-27 Albany Nord Skafilt Ab Press and method for modifying a press for use in the press section of a papermaking machine
US5792323A (en) * 1995-09-07 1998-08-11 Albany International Corp. Spiral base structres for long nip paper machine press belts
US5837080A (en) * 1995-09-07 1998-11-17 Albany International Corp. Method for manufacturing a belt for a long nip press
DE19537182A1 (de) * 1995-10-06 1997-04-10 Wuertt Filztuchfab Preßvorrichtung mit verlängerter Preßzone
US7014734B2 (en) * 2001-04-18 2006-03-21 Stowe Woodward Ag Shoe press belt
US6752908B2 (en) 2001-06-01 2004-06-22 Stowe Woodward, Llc Shoe press belt with system for detecting operational parameters
US7014733B2 (en) 2002-05-14 2006-03-21 Stowe Woodward L.L.C. Belt for shoe press and shoe calender and method for forming same

Also Published As

Publication number Publication date
NO167097C (no) 1991-10-02
ATE54347T1 (de) 1990-07-15
NO860939L (no) 1986-09-15
NO167097B (no) 1991-06-24
CA1282270C (en) 1991-04-02
JPH0357236B2 (de) 1991-08-30
FI855023A0 (fi) 1985-12-17
FI855023A (fi) 1986-09-14
MX162003A (es) 1991-03-20
FI86315B (fi) 1992-04-30
EP0194602B1 (de) 1990-07-04
FI86315C (fi) 1992-08-10
DE3672359D1 (de) 1990-08-09
JPS61258715A (ja) 1986-11-17
BR8506360A (pt) 1986-12-09
ZA859176B (en) 1986-08-27

Similar Documents

Publication Publication Date Title
CA1190779A (en) Dewatering press
CA1188556A (en) Dewatering press
US5238537A (en) Extended nip press belt having an interwoven base fabric and an impervious impregnant
US4946731A (en) Construction for an extended nip press belt
CA2061804C (en) Reinforcement of coated surfaces of lnp belts
KR100210356B1 (ko) 홈진 보이드-볼륨 벨트 및 그 제조방법
CA2395748C (en) Grooved long nip shoe press belt
US6419795B1 (en) Resin-impregnated belt having a texturized outer surface for application on papermaking machines
EP0194602A1 (de) EIne Methode zur Herstellung eines endlosen Bandes mit glatter Innenoberfläche zur Verwendung für eine Walze mit verlängertem Prepspalt zur Papierherstellung
CN100595376C (zh) 具有多孔薄膜形成的表面结构的造纸工业加工带
US7384516B2 (en) Belt with variable grooves
AU749247B2 (en) Resin-impregnated belt having a texturized outer surface for application on papermaking machines
CA1205335A (en) Method of manufacturing an endless resin impregnated belt
CA1201883A (en) Manufacture of endless belts for use in extended nip press
MXPA06004799A (en) Belt with variable grooves

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19870312

17Q First examination report despatched

Effective date: 19880429

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALBANY INTERNATIONAL CORP.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 54347

Country of ref document: AT

Date of ref document: 19900715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3672359

Country of ref document: DE

Date of ref document: 19900809

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 86103042.7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20020306

Year of fee payment: 17

Ref country code: GB

Payment date: 20020306

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020312

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20020313

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020319

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20020328

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030307

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031001

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030307

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031127

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20031001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050307