NO158430B - STRAP FOR DYEWATER OF FIBER COATS. - Google Patents
STRAP FOR DYEWATER OF FIBER COATS. Download PDFInfo
- Publication number
- NO158430B NO158430B NO823208A NO823208A NO158430B NO 158430 B NO158430 B NO 158430B NO 823208 A NO823208 A NO 823208A NO 823208 A NO823208 A NO 823208A NO 158430 B NO158430 B NO 158430B
- Authority
- NO
- Norway
- Prior art keywords
- belt
- stem
- stated
- strap
- cloth
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000004753 textile Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 239000002952 polymeric resin Substances 0.000 claims 1
- 229920005749 polyurethane resin Polymers 0.000 claims 1
- 229920003002 synthetic resin Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009941 weaving Methods 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
- D21F3/0209—Wet presses with extended press nip
- D21F3/0218—Shoe presses
- D21F3/0227—Belts or sleeves therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
- B29C70/506—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands and impregnating by melting a solid material, e.g. sheet, powder, fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
- B30B9/247—Pressing band constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2313/00—Use of textile products or fabrics as reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/733—Fourdrinier belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
- Coloring (AREA)
Description
Oppfinnelsen angår en rem til bruk ved avvanning av en fiberbane som transporteres av en papirmaskinfilt i en forlenget pressesone med sylindrisk trykkvalse og en trykksko i kontakt med remmen. The invention relates to a belt for use in dewatering a fiber web which is transported by a paper machine felt in an extended pressing zone with a cylindrical pressure roller and a pressure shoe in contact with the belt.
Under fabrikasjon av papir blir der dannet en bane During the manufacture of paper, a web is formed
ved avsetning av fiberholdig slam på en formingsvire. Ved ved avsetning av fiberholdig slam på en formningsvire. Ved denne operasjon blir en stor vannmengde fjernet fra slammet, hvoretter den nydannede bane går videre til et presseparti. Pressepartiet inneholder en rekke pressesoner. Banen går sluttelig til et tørkeparti med oppvarmede tørketromler hvor vanninnholdet blir minsket til et ønskelig nivå. by depositing fibrous sludge on a forming wire. During deposition of fibrous sludge on a forming wire. During this operation, a large amount of water is removed from the sludge, after which the newly formed web moves on to a pressing section. The press area contains a number of press zones. The track finally goes to a drying section with heated dryers where the water content is reduced to a desirable level.
I betraktning av de store omkostninger til energi er Considering the high costs of energy
det ønskelig å fjerne mest mulig vann fra banen før den går inn i tørkepartiet. Tørketromlene i dette parti blir oftest varmet opp med damp, og omkostningene kan bli betydelige hvis en stor vannmengde må fjernes. it is desirable to remove as much water as possible from the track before it enters the drying section. The drying drums in this lot are usually heated with steam, and the costs can be significant if a large amount of water has to be removed.
Anvendelsen av forlengede pressesoner har vært funnet gunstigere enn anvendelsen av soner dannet av par av samvir-kende valser. Ved å forlenge den tid da banen er utsatt for trykk i sonen, er det mulig å fjerne en større mengde vann. Dette forhold har vært anerkjent av fagfolk, og der har vært bevilget flere patenter på dette felt. Til disse hører US patentene re. 30.268, 4.201.624, 4.224.372, 4.229.253 og 4 . 229 . 254 . The use of extended press zones has been found to be more favorable than the use of zones formed by pairs of cooperating rollers. By extending the time when the track is exposed to pressure in the zone, it is possible to remove a greater amount of water. This relationship has been recognized by professionals, and several patents have been granted in this field. These include the US patents re. 30,268, 4,201,624, 4,224,372, 4,229,253 and 4 . 229 . 254 .
Ved bruk av forlengede pressesoner for avvanning av fiberbaner har banene typisk vært ført mellom to fuktabsorber-rende filter og en utenpåliggende rem. Filtene trekkes rundt en sylindrisk pressvalse med en bane imellom, mens remmen øver trykk mot filtene og valsen. En trykksko øver i sin tur press på remmen i pressesonen. When using extended pressing zones for dewatering fiber webs, the webs have typically been guided between two moisture-absorbing filters and an external belt. The felts are pulled around a cylindrical press roller with a web in between, while the belt exerts pressure against the felts and the roller. A pressure shoe in turn exerts pressure on the belt in the pressure zone.
Under avvanning av baner i forlengede pressesoner har man støtt på et problem, idet det ble funnet at der danner seg en bule i remmen foran pressesonen. Dette problem har vært påpekt i de amerikanske patentskrifter nr. 4.229.253 During dewatering of webs in extended press zones, a problem has been encountered, as it was found that a bulge forms in the belt in front of the press zone. This problem has been pointed out in US Patent No. 4,229,253
og 4.229.254, og der har vært foreslått visse remutførelser til å løse problemet. and 4,229,254, and certain belt designs have been proposed to solve the problem.
Oppfinnelsen går ut på en rem til avvanning av en fiberbane som transporteres av en papirmaskinfilt i en forlenget pressesone med sylindrisk trykkvalse og trykksko i kontakt med remmen, idet remmen forlenger pressesonen forbi utstrekningen av trykkskoen i retning av rembevegelsen, og er kjenne-tegnet ved at remmen omfatter en stamme av sammenholdt tekstilmateriale hvis ene side er impregnert med et impregneringsmiddel som danner en jevnt glatt ugjennomtrengelig overflate, mens der i remmens annen side er tildannet hulrom, hvorved der når papirmaskinfilten gjennomløper pressesonen mellom trykkvalsen og remmen, mens trykkskoen har anlegg mot den nevnte ene side av remmen og øver trykk på filten og fiberbanen via remmen, blir overført væske fra den motliggende filt til hulrommene. The invention concerns a belt for dewatering a fiber web that is transported by a paper machine felt in an extended press zone with a cylindrical pressure roller and pressure shoe in contact with the belt, the belt extending the press zone beyond the extent of the pressure shoe in the direction of the belt movement, and is characterized by the belt comprises a stem of cohesive textile material, one side of which is impregnated with an impregnating agent that forms a uniformly smooth impermeable surface, while on the other side of the belt a cavity is created, whereby when the paper machine felt runs through the press zone between the pressure roller and the belt, while the pressure shoe bears against it said one side of the belt and exerts pressure on the felt and fiber web via the belt, liquid is transferred from the opposite felt to the cavities.
I henhold til oppfinnelsen er stammen følgelig en fler-lags, impregnert tekstilduk. According to the invention, the stem is therefore a multi-layered, impregnated textile cloth.
Ytterligere trekk og fordeler ved oppfinnelsen fremgår av de uselvstendige krav. Further features and advantages of the invention appear from the independent claims.
En bemerkelsesverdig fordel ved denne remutførelse er A notable advantage of this belt design is
at den kan lages i hvilken som helst lengde siden den ikke krever noen kjernespindel under produksjonen. Stammeduken kan gjøres endeløs ved bruk av konvensjonell teknikk og så belegges med materialet. that it can be made to any length since it requires no core spindle during production. The tribal cloth can be made endless using conventional techniques and then coated with the material.
Den resulterende struktur er både lett og tilstrekkelig stabil for funksjonen under de forhold som hersker i en papirmaskin. Den har tilstrekkelig slitestyrke til å motstå en-hver slitasje som kunne inntre i pressen med forlenget pressesone. Til forskjell fra materialer som er bygget opp i likhet med gummidekk og kan flyte og/eller skille seg, fås ved bruk av oppfinnelsen en rem som vil holde seg intakt. Oppfinnelsen løser også problemet med buling nær pressesonene. The resulting structure is both light and sufficiently stable to function under the conditions prevailing in a paper machine. It has sufficient wear resistance to withstand any wear and tear that could occur in the press with an extended press zone. In contrast to materials that are built up like rubber tires and can float and/or separate, the use of the invention results in a strap that will remain intact. The invention also solves the problem of bulging near the press zones.
Oppfinnelsen vil i det følgende bli belyst nærmere The invention will be explained in more detail below
under henvisning til tegningen. with reference to the drawing.
Fig. 1 er et sideriss av en forlenget pressesone med Fig. 1 is a side view of an extended press zone with
en rem ifølge oppfinnelsen. a strap according to the invention.
Fig. 2 viser sonen på fig. 1 sett forfra og delvis Fig. 2 shows the zone in fig. 1 front and partial view
i snitt. in average.
Fig. 3 viser lengdesnitt av et stykke av remmen som ifølge oppfinnelsen, og Fig. 4 viser på tilsvarende måte en annen utførelses-form for remmen. Fig. 3 shows a longitudinal section of a piece of the belt according to the invention, and Fig. 4 similarly shows another embodiment of the belt.
Den viste forlengede pressesoner bestemt for avvanning av en løpende materialbane. Pressesonen 10 dannes av en sylindrisk pressvalse 12, en trykksko 14 med en konkavt krummet flate vendende mot pressvalsen, og en rem 16 anordnet for å øve trykk mot pressvalsen. Trykkskoen krumme side har omtrent samme krumningsradius som pressvalsen. Avstanden mellom pressvalse og trykksko kan stilles inn med en hydraulisk eller mekanisk anordning (ikke vist) forbundet med en stang 18 som er leddforbundet med skoen 14. Stangen kan også på-virkes for å øve ønsket trykk på skoen. Det vil forstås at en trykksko og en pressvalse som omtalt og som vist på fig. 1 og 2, er konvensjonelle og det er mulig å bruke andre an-ordninger til formålet i forbindelse med oppfinnelsen. It showed extended press zones intended for dewatering a running material web. The pressing zone 10 is formed by a cylindrical pressing roller 12, a pressure shoe 14 with a concavely curved surface facing the pressing roller, and a belt 16 arranged to exert pressure against the pressing roller. The curved side of the press shoe has approximately the same radius of curvature as the press roller. The distance between the press roller and the pressure shoe can be adjusted with a hydraulic or mechanical device (not shown) connected to a rod 18 which is articulated with the shoe 14. The rod can also be acted upon to exert the desired pressure on the shoe. It will be understood that a pressure shoe and a pressure roller as mentioned and as shown in fig. 1 and 2, are conventional and it is possible to use other devices for the purpose in connection with the invention.
En utførelse av remmen 16 i samsvar med oppfinnelsen An embodiment of the strap 16 in accordance with the invention
er vist i detalj på fig. 3. Remmen 16 omfatter en stamme 20 av vevet tolags monofilamentduk med multifilament- eller spunnede fyllgarn 21 og impregnert med et polymert materiale 22. Remmer har på en side en overflate med hulrom 18'. Varme-herdende harpikser, som f.eks. polyuretan, er funnet å være egnet som impregneringsmateriale. Termoplastiske polymere, som polypropylen, er også brukbare. is shown in detail in fig. 3. The strap 16 comprises a stem 20 of woven two-layer monofilament cloth with multifilament or spun filling yarns 21 and impregnated with a polymeric material 22. Straps have on one side a surface with cavities 18'. Thermosetting resins, such as polyurethane, has been found to be suitable as an impregnation material. Thermoplastic polymers, such as polypropylene, are also usable.
Stammeduken 20 er tilstrekkelig åpen til å tillate impregnering for å unngå muligheten av at der dannes uheldige tomrom i den ferdige rem på trykkskosiden. Slike tomrom er uheldige fordi de ville tillate smøremiddelet som benyttes mellom rem og sko, å trenge gjennom remmen og forurense filten og fiberbanen. Fyllgarnet 21 skaffer en barriere med tilstrekkelig liten gjennomtrengelighet til å hindre harpik-sen i å trenge igjennom til siden med hulrommene under beleg-nings- og impregneringsprosessen. I ferdig form er remmen endeløs og av jevn tykkelse. Remmen må også ha tilstrekkelig stabilitet under de forhold som hersker i en papirmaskin. The stem fabric 20 is sufficiently open to allow impregnation to avoid the possibility of undesirable voids forming in the finished strap on the pressure shoe side. Such voids are unfortunate because they would allow the lubricant used between belt and shoe to penetrate the belt and contaminate the felt and fiber web. The filler yarn 21 provides a barrier with sufficiently low permeability to prevent the resin from penetrating to the side with the voids during the coating and impregnation process. In finished form, the belt is endless and of uniform thickness. The belt must also have sufficient stability under the conditions prevailing in a paper machine.
Med andre ord må den ha god lengde- og breddestabilitet og egne seg til å føres. In other words, it must have good length and width stability and be suitable for being guided.
Den benyttede termoplastiske eller varmeherdnende harpiks bør utgjøre en hovedsakelig 100% massiv masse for å unngå dannelsen av blærer i remmen under herdningsprosessen med derav følgende hulrom på den belagte side. The thermoplastic or heat-setting resin used should constitute an essentially 100% solid mass to avoid the formation of blisters in the belt during the curing process with consequent voids on the coated side.
Utsiden 17 av remmen kan slipes glatt med sikte på The outside 17 of the belt can be ground smooth with a view to
føring langs trykkskoen 14. Den motsatte side inneholder som følge av vevningen og fravær av impregnering hulrom som væske kan overføres til under gjennomgangen av bane, filt og rem i pressesonen. guide along the pressure shoe 14. As a result of the weaving and the absence of impregnation, the opposite side contains cavities into which liquid can be transferred during the passage of web, felt and belt in the press zone.
En annen variant av denne første utførelsesform er Another variant of this first embodiment is
vist på fig. 4. Bestanddelene er maken til dem på fig. 3 shown in fig. 4. The components are similar to those in fig. 3
og har samme henvisningstall med eventuelt en tilføyet apostrof. Remmen 16' på fig. 4 er en flerlagsstruktur med et barriereskikt tilveiebragt av fyllgarn 21'. Disse fyllgarn 21' kan være multifilament eller spunnede garn. Remmen er belagt og impregnert som beskrevet ovenfor for å gi en glatt og ugjennomtrengelig side 17' og en overflate med hulrom 18' på den annen side. Remmen 16' brukes på samme måte som beskrevet for remmen 16. and have the same reference number with possibly an added apostrophe. The strap 16' in fig. 4 is a multilayer structure with a barrier layer provided by filling yarn 21'. These filling yarns 21' can be multifilament or spun yarns. The belt is coated and impregnated as described above to provide a smooth and impermeable side 17' and a cavity surface 18' on the other side. The strap 16' is used in the same way as described for the strap 16.
Ved en annen utførelsesform for oppfinnelsen benyttes In another embodiment of the invention is used
en annen metode til å innføre polymert materiale i remstrukturen. Ved denne annen metode blir polymert materiale presset inn i overflaten. Inntrengningsdybden reguleres ved anvendt trykkraft og temperatur. Både varmeherdnende og termoplastiske polymere er brukbare. Termoplastiske polymere er særlig gunstige ved denne metode, siden deres viskositet i smeltet form kan reguleres ved hjelp av temperaturen. Ved å regulere viskositeten kan man regulere inntrengningsdybden, og behov for en barriere i remstrukturen bortfaller når det gjelder polymere med korrekt viskositet. another method of introducing polymeric material into the belt structure. In this second method, polymeric material is pressed into the surface. The penetration depth is regulated by applied pressure and temperature. Both thermosetting and thermoplastic polymers are usable. Thermoplastic polymers are particularly advantageous in this method, since their viscosity in molten form can be controlled by temperature. By regulating the viscosity, the penetration depth can be regulated, and there is no need for a barrier in the belt structure when it comes to polymers with the correct viscosity.
Ved denne metode blir remmen 16 lagt rundt et par valser. Den ene av valsene er en oljevarmet sylinder. Man an-bringer polymert materiale i baneform og med riktig kaliber mellom remmen og den oppvarmede sylinder og lar det rotere rundt denne. Sylinderens temperatur holdes på ønsket nivå In this method, the belt 16 is placed around a pair of rollers. One of the rollers is an oil-heated cylinder. Polymeric material in web form and of the correct caliber is placed between the belt and the heated cylinder and allowed to rotate around it. The cylinder's temperature is kept at the desired level
for å smelte det polymere materiale til riktig viskositet. Dette blir da tvunget inn i remmen ved stramningen av denne rundt sylinderen og valsen. En utvendig trykkvalse kan anvendes for å skaffe ytterligere trykk om nødvendig. Banen av polymert materiale trimmes slik at der ikke forekommer over-lapp i materialet som presses inn i remmen. to melt the polymeric material to the proper viscosity. This is then forced into the belt by tightening it around the cylinder and roller. An external pressure roller can be used to provide additional pressure if necessary. The web of polymeric material is trimmed so that there is no overlap in the material that is pressed into the belt.
Remmer produsert i samsvar med oppfinnelsen er funnet Belts manufactured in accordance with the invention have been found
å ha mange ønskelige egenskaper. De løper lett langs trykkskoen og er i stand til å overføre trykk fra denne til bane to have many desirable characteristics. They run easily along the pressure shoe and are able to transfer pressure from this to the track
og trykkvalse. Der fås tilstrekkelig smidighet, og remmene har vist seg ikke å influeres av smøremiddel påført før inn-gangen i pressesonen. and pressure roller. Sufficient flexibility is obtained, and the belts have been shown not to be influenced by lubricant applied before entering the press zone.
Sammenlignet med remmer som er vanlig kjent til formålet, blir remmen ifølge oppfinnelsen forholdsvis tynn og lett. Tykke remmer har ulempen av å være tilbøyelige til å flyte i pressesonen. En rem med dimensjoner 7,5 x 4,25 m og impregnert med en varmeherdnende harpiks i samsvar med oppfinnelsen veier omtrent 90 kg. En rem av lignende format i bulehindrende utførelse og med en struktur som angitt i de ovennevnte patentskrifter-veier omkring 550 kg. Til forskjell fra de tyngere remmer behøver remmen ifølge oppfinnelsen ingen armering, og fremstillingen av remmen ifølge oppfinnelsen kan gjennomføres økonomisk og uten behov for kjernespindler eller autoklaver som begrenser formatet av andre remmer. Der kan således fremstilles remmer av vilkår-lig lengde. Hvis det ønskes, kan et banemateriale sys inn i den vevede stamme. Har stammestrukturen ikke vært vevet i endeløs form, kan den gjøres endeløs ved skjøteteknikker som er anvendelige for formingsduker i papirindustrien. Compared to belts that are commonly known for the purpose, the belt according to the invention is relatively thin and light. Thick belts have the disadvantage of being prone to floating in the press zone. A belt with dimensions 7.5 x 4.25 m and impregnated with a thermosetting resin according to the invention weighs approximately 90 kg. A belt of similar format in anti-bulge design and with a structure as indicated in the above-mentioned patents weighs about 550 kg. Unlike the heavier belts, the belt according to the invention needs no reinforcement, and the manufacture of the belt according to the invention can be carried out economically and without the need for core spindles or autoclaves which limit the format of other belts. Belts of arbitrary length can thus be produced. If desired, a webbing material can be sewn into the woven stem. If the trunk structure has not been woven in an endless form, it can be made endless by splicing techniques that are applicable to forming cloths in the paper industry.
En rem laget i samsvar med oppfinnelsen kan benyttes A strap made in accordance with the invention can be used
i forbindelse med en pressesone som vist på fig. 1. Remmen 16 plasseres mellom trykkskoen og trykkvalsen. Den glatte, belagte side 17 av remmen får anlegg mot skoen. En fiberbane 24 ført mellom filter 26 og '27 innføres i pressesonen 10. Den side av remmen 17 som vender mot skoen 14, blir smurt med en smøreanordning 28 plassert foran pressesonen. in connection with a press zone as shown in fig. 1. The belt 16 is placed between the pressure shoe and the pressure roller. The smooth, coated side 17 of the strap comes into contact with the shoe. A fiber web 24 guided between filters 26 and '27 is introduced into the pressing zone 10. The side of the belt 17 which faces the shoe 14 is lubricated with a lubrication device 28 placed in front of the pressing zone.
På grunn av den ypperlige smidighet av remstammen og det forhold at tykkelsen av beleggene kan holdes på et mini-mum, vil remmens overflate ha mindre tilbøyelighet til å svikte på grunn av tretthet forårsaket av bøyepåkjenninger. Dette skyldes det forhold at overflateplanet for den belagte side på grunn av remmens minskede tykkelse får minimal av-stand fra remmens nøytrale akse under bøyning. Dermed minskes prosentuell forlengelse og sammentrykning i overflateplanet under bøyning. Due to the excellent flexibility of the belt trunk and the fact that the thickness of the coatings can be kept to a minimum, the surface of the belt will have less tendency to fail due to fatigue caused by bending stresses. This is due to the fact that, due to the reduced thickness of the belt, the surface plane of the coated side has a minimal distance from the belt's neutral axis during bending. This reduces the percentage elongation and compression in the surface plane during bending.
Det vil innses at en rem som benyttes ifølge oppfinnelsen, kan innbefatte en stammeduk laget av forskjellige polymere materialer med de nødvendige egenskaper for bruk It will be appreciated that a belt used according to the invention may include a trunk cloth made of various polymeric materials with the necessary properties for use
i papirmaskiner. Andre materialer enn polyuretan og polypro- in paper machines. Materials other than polyurethane and polypropylene
pylen kan også anvendes som belegningsmateriale. Også remmens vevnadsstruktur kan endres, skjønt en flerlagsrem er ønskelig for dannelse av hulrommene. the arrow can also be used as a covering material. The weave structure of the belt can also be changed, although a multi-layer belt is desirable for the formation of the cavities.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30514881A | 1981-09-24 | 1981-09-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO823208L NO823208L (en) | 1983-03-25 |
| NO158430B true NO158430B (en) | 1988-05-30 |
| NO158430C NO158430C (en) | 1990-10-04 |
Family
ID=23179537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO823208A NO158430C (en) | 1981-09-24 | 1982-09-22 | STRAP FOR DYEWATER OF FIBER COATS. |
Country Status (15)
| Country | Link |
|---|---|
| AT (1) | AT383835B (en) |
| AU (1) | AU559745B2 (en) |
| BE (1) | BE894476A (en) |
| BR (1) | BR8205579A (en) |
| CA (1) | CA1190779A (en) |
| CH (1) | CH657647A5 (en) |
| DE (1) | DE3235468A1 (en) |
| FI (1) | FI81150C (en) |
| FR (1) | FR2513281B1 (en) |
| GB (1) | GB2106557B (en) |
| IT (1) | IT1149356B (en) |
| NL (1) | NL185678C (en) |
| NO (1) | NO158430C (en) |
| NZ (1) | NZ201987A (en) |
| SE (1) | SE457542B (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238537A (en) * | 1981-09-15 | 1993-08-24 | Dutt William H | Extended nip press belt having an interwoven base fabric and an impervious impregnant |
| US5234551A (en) * | 1981-09-24 | 1993-08-10 | Dutt William H | Extended nip press belt having an interwoven base fabric and an impervious impregnant |
| DE3224760A1 (en) * | 1982-07-02 | 1984-01-05 | Thomas Josef Heimbach GmbH & Co, 5160 Düren | TAPE FOR USE IN WET PRESSES OF PAPER MACHINES |
| JPS5954598U (en) * | 1982-10-01 | 1984-04-10 | 市川毛織株式会社 | Pressure belt for wide nip press of paper machine |
| DE3318984A1 (en) * | 1983-05-25 | 1984-11-29 | Fa. F. Oberdorfer, 7920 Heidenheim | MANUFACTURING PROCESS FOR TENSION-RESISTANT, IMPERMEABLE, BENDABLE TAPES, IN PARTICULAR FOR PRESSES FOR THE DRAINAGE OF FIBER FIBER STRIPS |
| FI72362C (en) * | 1983-10-03 | 1987-05-11 | Tamfelt Oy Ab | FOERFARANDE OCH MEDEL FOER ATT AOSTADKOMMA AVLAEGSNANDE AV VATTEN I EN PRESS VID EN PAPPERSMASKIN. |
| JPS6081391A (en) * | 1983-10-07 | 1985-05-09 | 三菱重工業株式会社 | Endless belt |
| US4571359A (en) * | 1984-12-18 | 1986-02-18 | Albany International Corp. | Papermakers wet-press felt and method of manufacture |
| ZA859176B (en) * | 1985-03-13 | 1986-08-27 | Albany Int Corp | Papermaking belt with smooth inner surface and method of making same |
| DE3801850A1 (en) * | 1988-01-22 | 1989-07-27 | Oberdorfer Fa F | METHOD AND DEVICE FOR THE PRODUCTION OF STRONG STABILITY, LIQUID-IMPERMEABLE, BENDABLE PRESSING BANDS, IN PARTICULAR FOR WET PRESSING OF PAPER MACHINES |
| DE3815278A1 (en) * | 1988-05-05 | 1989-11-16 | Voith Gmbh J M | PRESS RELEASE OF A MACHINE FOR THE PRODUCTION OF A FIBROUS MATERIAL SHEET, IN PARTICULAR PAPER SHEET |
| US4931010A (en) * | 1988-10-31 | 1990-06-05 | Albany International Corp. | Fabrics having hydrophilic and hydrophobic foams |
| US5118557A (en) * | 1988-10-31 | 1992-06-02 | Albany International Corp. | Foam coating of press fabrics to achieve a controlled void volume |
| DE3909935C2 (en) * | 1989-03-25 | 1995-04-27 | Oberdorfer F Siebtech Gmbh | Method and device for producing an impermeable and flexible band or hose |
| DE3914534C1 (en) * | 1989-05-02 | 1990-10-18 | Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De | |
| DE3914533A1 (en) * | 1989-05-02 | 1990-11-08 | Heimbach Gmbh Thomas Josef | TAPE FOR PAPER MACHINES |
| US4973383A (en) * | 1989-08-11 | 1990-11-27 | Beloit Corporation | Bearing blanket for an extended nip press |
| FI92738C (en) * | 1989-09-08 | 1994-12-27 | Albany Int Corp | Belt |
| US4946731A (en) * | 1989-09-28 | 1990-08-07 | Albany International Corp. | Construction for an extended nip press belt |
| DE4020589A1 (en) * | 1990-06-28 | 1992-01-09 | Oberdorfer Fa F | Coated press band for paper making machines - has core fabric with flattened warp and/or weft threads |
| DE4028085C1 (en) * | 1990-09-05 | 1992-02-27 | Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De | |
| JPH06287885A (en) | 1991-04-15 | 1994-10-11 | Yamauchi Corp | Endless belt for dehydration press |
| DE4125279C2 (en) * | 1991-05-29 | 1995-04-06 | Voith Gmbh J M | Device for producing a press jacket for the paper industry and press jacket produced therewith |
| DE4312174A1 (en) * | 1993-04-14 | 1994-10-20 | Wuertt Filztuchfab | Dryer screen for paper machine |
| DE19537182A1 (en) * | 1995-10-06 | 1997-04-10 | Wuertt Filztuchfab | Pressing device with an extended pressing zone |
| JPH10120137A (en) * | 1996-10-21 | 1998-05-12 | Mitsuboshi Belting Ltd | Conveyer belt and manufacture of same |
| DE19900989A1 (en) | 1999-01-13 | 2000-07-27 | Voith Sulzer Papiertech Patent | Belt for machines for the production of material webs |
| US7862879B2 (en) * | 2003-07-31 | 2011-01-04 | Albany International Corp. | Fabrics with v-guides |
| DE102004011665A1 (en) * | 2004-03-10 | 2005-10-06 | Stowe Woodward Ag | Integral shoe press belt |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1536533A (en) * | 1924-04-01 | 1925-05-05 | William E Sheehan | Wet-web carrier for pulp and paper machines |
| GB1133696A (en) * | 1966-02-21 | 1968-11-13 | Albany Felt Co | Improvements relating to corrugator belts |
| US3613258A (en) * | 1969-09-15 | 1971-10-19 | Draper Brothers Co | Felt for papermaking machine |
| BE793027A (en) * | 1971-12-20 | 1973-04-16 | Beloit Corp | PRESS CONTROLLED |
| US3783097A (en) * | 1972-05-30 | 1974-01-01 | Beloit Corp | Hydrodynamically loaded web press with slipper bearing shoes |
| US4109543A (en) * | 1976-05-10 | 1978-08-29 | The Goodyear Tire & Rubber Company | Flexible composite laminate of woven fabric and thermoplastic material and method of making said laminate |
| US4238287A (en) * | 1979-04-26 | 1980-12-09 | Beliot Corporation | Extended nip press with transverse stiffening means in the belt |
| DE2939637C2 (en) * | 1979-09-29 | 1982-12-30 | Drabert Söhne Minden (Westf.), 4950 Minden | Process for the production of an endless printing belt for a device for the continuous pressing and decatizing of fabrics, knitted fabrics and the like. |
| GB2106555B (en) * | 1981-09-15 | 1985-10-02 | Albany Int Corp | Improvements relating to extended nip dewatering presses and to the manufacture of belts for use in such presses |
-
1982
- 1982-09-22 NL NLAANVRAGE8203682,A patent/NL185678C/en not_active IP Right Cessation
- 1982-09-22 NO NO823208A patent/NO158430C/en not_active IP Right Cessation
- 1982-09-22 FR FR828215966A patent/FR2513281B1/en not_active Expired
- 1982-09-22 IT IT49152/82A patent/IT1149356B/en active
- 1982-09-22 GB GB08226979A patent/GB2106557B/en not_active Expired
- 1982-09-23 NZ NZ201987A patent/NZ201987A/en unknown
- 1982-09-23 BE BE0/209080A patent/BE894476A/en not_active IP Right Cessation
- 1982-09-23 AU AU88649/82A patent/AU559745B2/en not_active Expired
- 1982-09-23 CH CH5634/82A patent/CH657647A5/en not_active IP Right Cessation
- 1982-09-23 BR BR8205579A patent/BR8205579A/en not_active IP Right Cessation
- 1982-09-23 CA CA000412052A patent/CA1190779A/en not_active Expired
- 1982-09-23 FI FI823265A patent/FI81150C/en not_active IP Right Cessation
- 1982-09-24 AT AT0355982A patent/AT383835B/en not_active IP Right Cessation
- 1982-09-24 SE SE8205476A patent/SE457542B/en not_active IP Right Cessation
- 1982-09-24 DE DE19823235468 patent/DE3235468A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BR8205579A (en) | 1983-08-30 |
| FI81150C (en) | 1990-09-10 |
| NZ201987A (en) | 1986-06-11 |
| FR2513281A1 (en) | 1983-03-25 |
| IT8249152A0 (en) | 1982-09-22 |
| NO823208L (en) | 1983-03-25 |
| NL8203682A (en) | 1983-04-18 |
| ATA355982A (en) | 1987-01-15 |
| AU8864982A (en) | 1983-03-31 |
| BE894476A (en) | 1983-01-17 |
| AU559745B2 (en) | 1987-03-19 |
| GB2106557B (en) | 1985-05-09 |
| SE457542B (en) | 1989-01-09 |
| GB2106557A (en) | 1983-04-13 |
| NL185678C (en) | 1990-06-18 |
| IT1149356B (en) | 1986-12-03 |
| DE3235468A1 (en) | 1983-05-05 |
| FI81150B (en) | 1990-05-31 |
| NL185678B (en) | 1990-01-16 |
| AT383835B (en) | 1987-08-25 |
| FI823265A0 (en) | 1982-09-23 |
| SE8205476L (en) | 1983-03-25 |
| SE8205476D0 (en) | 1982-09-24 |
| FI823265L (en) | 1983-03-25 |
| NO158430C (en) | 1990-10-04 |
| CA1190779A (en) | 1985-07-23 |
| FR2513281B1 (en) | 1985-07-26 |
| CH657647A5 (en) | 1986-09-15 |
| DE3235468C2 (en) | 1989-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO158430B (en) | STRAP FOR DYEWATER OF FIBER COATS. | |
| US5277728A (en) | Method for manufacturing a belt | |
| NO172731B (en) | BELT FOR APPLICATION IN A PRESSURE WITH EXTENDED NIPP FOR DRAINAGE OF A FIBER-CONTAINED COAT | |
| JP3096068B2 (en) | Knitted foundation cloth for shoe press belt | |
| JP2004513253A (en) | Long nip shoe press belt with groove | |
| AU730658B1 (en) | Method for manufacturing resin-impregnated endless belt structures for papermaking machines and similar industrial applications | |
| AU721802B2 (en) | Method for manufacturing resin-impregnated endless belt structures | |
| US5234551A (en) | Extended nip press belt having an interwoven base fabric and an impervious impregnant | |
| KR101051669B1 (en) | Belt with variable grooves | |
| AU749247B2 (en) | Resin-impregnated belt having a texturized outer surface for application on papermaking machines | |
| US7374640B2 (en) | Grooved surface belt or roll and method of fabrication | |
| JPS59100788A (en) | Dehydration press | |
| CA1201883A (en) | Manufacture of endless belts for use in extended nip press | |
| CA1205335A (en) | Method of manufacturing an endless resin impregnated belt | |
| MXPA98004653A (en) | Method for manufacturing resin-impregnated endless belt structures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1K | Patent expired |
Free format text: EXPIRED IN SEPTEMBER 2002 |