NO130070B - - Google Patents
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- Publication number
- NO130070B NO130070B NO00162805A NO16280566A NO130070B NO 130070 B NO130070 B NO 130070B NO 00162805 A NO00162805 A NO 00162805A NO 16280566 A NO16280566 A NO 16280566A NO 130070 B NO130070 B NO 130070B
- Authority
- NO
- Norway
- Prior art keywords
- web
- cylinder
- mantle surface
- drying
- fiber
- Prior art date
Links
- 239000000835 fiber Substances 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 25
- 239000000725 suspension Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000009740 moulding (composite fabrication) Methods 0.000 description 21
- 238000003825 pressing Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/04—Complete machines for making continuous webs of paper of the cylinder type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/07—Water collectors, e.g. save-alls
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Fiber Materials (AREA)
- Nonwoven Fabrics (AREA)
Description
Maskin til fremstilling av én kontinuerlig fiberbane.Machine for the production of one continuous fiber web.
Oppfinnelsen går ut på en maskin til fremstilling av en kontinuerlig fiberbane, f.eks en papirbane>med hoyt torrstoffinn- The invention concerns a machine for the production of a continuous fiber web, e.g. a paper web with a high dry matter content
hold ved avvanning av en fibersuspensjon, og nærmere bestemt en maskin som innbefatter en roterbar sylinder og en arkformningssone begrenset av en del av sylinderens mantelflate og et parti av en bane av vanngjennomtrengelig materiale som er innrettet til å lope i en endelos sloyfe med det nevnte baneparti strukket langsefter og mot den nevnte del av mantelflaten slik at avstanden mellom mantelflaten og banen i arkformningssonen i det vesentlige er bestemt véd strekkspenning i banen og mottrykk fra i arkformningssonen innsproy- hold in dewatering a fiber suspension, and more particularly a machine comprising a rotatable cylinder and a sheet forming zone limited by a portion of the cylinder's mantle surface and a portion of a web of water permeable material arranged to run in an endless loop with said web portion stretched longitudinally and towards the aforementioned part of the mantle surface so that the distance between the mantle surface and the web in the sheet-forming zone is essentially determined by tensile stress in the web and counter-pressure from in the sheet-forming zone injected
tet fibersuspensjon og derav formet fiberbane,og fiberbanen forlater arkformningssonen heftende til sylinderens mantelflate. dense fiber suspension and fiber web formed from it, and the fiber web leaves the sheet forming zone adhering to the cylinder's mantle surface.
Ved konvensjonell papirfremstilling formes papirhanen iIn conventional paper production, the paper tap is formed in
en særskilt maskinenhet, f.eks. et vireparti,og blir derfra overfort til andre maskinenheter,,f.eks. presseparti og torkeparti,for videre awanning. Ved visse kjente maskiner formes papirbanen mellom en uperforert sylindermantel og en vire som er strukket langs en del av dennes periferi/ eller mellom en vire og en filt som begge er strukket langs en del av periferien av en perforert eller uperforert sylindermantel. Det forekommer at den formede papirbane ved lignende ar-rangementer i en viss utstrekning avvannes ved sug eller pressning mot sylinderen innen den overfores til et presse- eller torkeparti. Overforingen fra en maskinenhet til en annen skjer vanligvis ved at papirbanen trekkes i fritt spenn eller, understottet av en filt mellom disse maskinenheter. a separate machine unit, e.g. a wire section, and is transferred from there to other machine units,, e.g. pressing part and drying part, for further dewatering. In certain known machines, the paper web is formed between an imperforated cylinder jacket and a wire which is stretched along part of its periphery/ or between a wire and a felt which are both stretched along part of the periphery of a perforated or imperforated cylinder jacket. It happens that with similar arrangements the shaped paper web is to a certain extent dewatered by suction or pressing against the cylinder before it is transferred to a pressing or drying section. The transfer from one machine unit to another usually takes place by pulling the paper web in free span or, supported by a felt between these machine units.
Overforingen av en papirbane i fritt spenn stiller som of-test strenge krav til banens torrstoffinnhold og strekkfasthet. Over-foring av en fuktig papirbane ved hjelp av en filt er også en tem-melig kinkig prosess, som influeres av flere faktorer, deriblandt filtens tilstand, altså dens fuktighetsinnhold, hårdhet og tilstopp- The lining of a free-span paper web usually places strict requirements on the dry matter content and tensile strength of the web. Over-lining a damp paper web using a felt is also a rather complicated process, which is influenced by several factors, including the condition of the felt, i.e. its moisture content, hardness and clogging.
, ningsgrad., ning degree.
Ved visse papirmaskiner blir den formede papirbane ved hjelp av en filt overfort fra virepartiet til en torkesylinder, såkalt yankeesylinder, og festet til denne ved at filten med papirbanen presses mot sylinderens mantelflate. På torkesylinderen blir papirbanen ved oppvarmning torket ferdig i én operasjon til et slikt torrstoffinnhold at den kan avtas frittbærende eller ved hjelp av en sjaber. Foråt torkingen av papiret skal kunne bli så effektiv som mulig, er det viktig at motstanden mot varmetransport fra torkesy-linderens mantelflate til papiret blir minst mulig. Dette oppnås ved god kontakt mellom sylinderflate og papirbane. Videre er det hensiktsmessig at papirbanens fuktighetsgrad ved pressningen mot sylinderflaten blir bragt ned slik at den vannmengde som skal avdampes, blir moderat. I den forbindelse er en hoy temperatur av papirbanen gunstig, fordi viskositeten da er forholdsvis lav. Ved kontakt mellom papirbane og torkesylinder går der varme over fra sylinderflaten til papiret, hvorved det vann i papirbanen som ligger nærmest sylinderflaten, fordamper og diffunderer gjennom papiret mot dets fra sylinderen bortvendte frie overflate. Ved hoy temperatur av torkesylinderen kan fordampningen dog momentant bli så sterk at damp-trykket forringer kontakten mellom sylinderflaten og papiret så motstanden mot varmeovergang oker. For å forhindre en slik momentan sterk fordampning kan;man.kjole sylinderflaten ved påblåsning av et varmeopptagende medium like foran kontaktstedet mellom sylinderflate og papirbane. In certain paper machines, the shaped paper web is transferred by means of a felt from the wire section to a dryer cylinder, so-called yankee cylinder, and attached to this by pressing the felt with the paper web against the cylinder's outer surface. On the drying cylinder, the paper web is dried by heating in one operation to such a dry matter content that it can be removed free-standing or with the help of a scraper. Before the drying of the paper can be as efficient as possible, it is important that the resistance to heat transport from the outer surface of the drying cylinder to the paper is as low as possible. This is achieved by good contact between cylinder surface and paper web. Furthermore, it is appropriate that the degree of moisture of the paper web when pressed against the cylinder surface is brought down so that the amount of water to be evaporated is moderate. In this connection, a high temperature of the paper web is beneficial, because the viscosity is then relatively low. On contact between the paper web and drying cylinder, heat is transferred from the cylinder surface to the paper, whereby the water in the paper web which is closest to the cylinder surface evaporates and diffuses through the paper towards its free surface facing away from the cylinder. At a high temperature of the drying cylinder, however, the evaporation can momentarily become so strong that the steam pressure deteriorates the contact between the cylinder surface and the paper so that the resistance to heat transfer increases. To prevent such momentary strong evaporation, the cylinder surface can be coated by blowing on a heat-absorbing medium just in front of the contact point between the cylinder surface and the paper web.
Hensikten med den foreliggende oppfinnelse er å eliminere de ulemper som knytter seg til de tidligere kjente metoder til papirfremstilling, og som i forste rekke skyldes vanskelighetene med å overfore en papirbane mellom maskinenhetene til formning, torkning og presning av banen og å skaffe god kontakt mellom papirbanen og en torkeflate. The purpose of the present invention is to eliminate the disadvantages associated with the previously known methods of paper production, and which are primarily due to the difficulties in transferring a paper web between the machine units for forming, drying and pressing the web and to obtain good contact between the paper web and a drying surface.
Oppfinnelsen er i det vesentligstekarakterisert vedat The invention is essentially characterized by that
sylinderen,hvis mantel delvis utgjor en begrensningsflate i arkformningssonen, er innrettet til å varmes opp og er forsynt med en torkekappe anordnet for å avgrense en varmetorkesone på en del av sylinderens mantelflate, hvorved fiberbanen kan torkes ved hjelp av varme innen den fjernes fra sylinderens mantelflate. the cylinder, whose mantle partly forms a limiting surface in the sheet forming zone, is arranged to be heated and is provided with a drying jacket arranged to delimit a heating drying zone on part of the cylinder's mantle surface, whereby the fiber web can be dried by means of heat before it is removed from the cylinder's mantle surface .
En fordel ved oppfinnelsen er at den gjor det mulig åAn advantage of the invention is that it makes it possible to
bygge en konstruktivt enkel og kompakt papirmaskin som utgjor en ene-ste maskinenhet, hvor formning, pressning og torking av papirbanen skjer mens denne stadig hefter til en og samme kontinuerlige glatte flate. Den effektive driftstid for en slik maskin blir ikke redu-sert ved driftsstans for skiftning av overforingsfilter, slik det ellers ikke er til å unngå. build a structurally simple and compact paper machine that forms a single machine unit, where the shaping, pressing and drying of the paper web takes place while it is constantly adhered to one and the same continuous smooth surface. The effective operating time of such a machine is not reduced by downtime for changing the transfer filter, as is otherwise unavoidable.
Ved at formningen av papirbanen skjer mellom en vire og en del av den samme kontinuerlige glatte flate som oppvarmes for torkeprosessen, blir der også oppnådd en viss oppvarmning av slipemassen under formningen. Vannet i massen nærmest den varme flate fortren-ger vannet i det utenforliggende lag ut gjennom viren, hvorved der fås en temperaturhoyning tvers igjennm den formede papirbane. Denne homogene forvarmning av papirbanen medforer en senkning av sylinder-flatens temperatur, noe som medforer en roligere dampdannelse under torkningens innledende fase, hvorved den gode kontakt mellom papirbanen og sylinderflaten blir bibeholdt under torkeprosessen. Den homogene forvarmning av den formede papirbane tillater også på grunn av sin viskositetssenkende virkning en bedre avvanning ved pressning for slutttorkningen. As the shaping of the paper web takes place between a wire and part of the same continuous smooth surface that is heated for the drying process, a certain heating of the abrasive compound is also achieved during shaping. The water in the mass closest to the hot surface displaces the water in the outer layer out through the wire, which results in a temperature rise across the shaped paper web. This homogeneous preheating of the paper web leads to a lowering of the cylinder surface temperature, which results in a quieter steam formation during the initial phase of drying, whereby the good contact between the paper web and the cylinder surface is maintained during the drying process. The homogeneous preheating of the shaped paper web also allows, due to its viscosity-lowering effect, a better dewatering during pressing for the final drying.
Oppfinnelsen vil i det folgende bli beskrevet nærmere under henvisning til tegningen. Fig. 1 viser skjematisk en maskin i henhold til oppfinnelsen. Fig. 2 viser skjematisk en maskin ifolge oppfinnelsen utfort for arkformning i flere trinn. The invention will be described in more detail below with reference to the drawing. Fig. 1 schematically shows a machine according to the invention. Fig. 2 schematically shows a machine according to the invention carried out for sheet forming in several stages.
I utforelsesformen på fig. 1 er en innlopskasse 1 innrettet til å sproyte en fibersuspensjon 5, bestemt for fremstilling av en papirbane 3, inn i en arkformningssone 7 begrenset av'et parti 8 In the embodiment of fig. 1, an inlet box 1 is arranged to spray a fiber suspension 5, intended for the production of a paper web 3, into a sheet forming zone 7 limited by a portion 8
av en bane 9 av vanngjennomtrengelig materiale og et parti 10 av den glatte mantelflate 13 av en dreibar sylinder 11 forsynt med opp-varmningsanordninger. Banen 9 er utformet som en endelos sloyfe som loper over ledevalser 15 og en strammevalse 17. Avstanden fra partiet 8 av banen 9 til partiet 10 av mantelflaten 13 er bestemt ved strekkspenningen i banen 9 og av mottrykket fra den mellomliggende, mer eller mindre avvannede fibersuspensjon 5 eller formede papirbane 3. I det indre av sloyfen av banen 9°g under arkformningssonen 7 of a web 9 of water-permeable material and a part 10 of the smooth mantle surface 13 of a rotatable cylinder 11 provided with heating devices. The web 9 is designed as an endless loop that runs over guide rollers 15 and a tension roller 17. The distance from the part 8 of the web 9 to the part 10 of the mantle surface 13 is determined by the tensile stress in the web 9 and by the back pressure from the intermediate, more or less dewatered fiber suspension 5 or shaped paper web 3. In the interior of the sloyf of the web 9°g below the sheet forming zone 7
er der anordnet et vanntraug 19 til oppsamling av vann utpresset fra arkformningssonen 7-Mot mantelflaten 13 av torkesylinderen 11 er der efter arkformningssonen 7?regnet i rotasjonsretningen, anbragt en pressvalse 21 innesluttet i en filtsloyfe 23. Sylinderen 11 er også over et parti 24 av sin overflate 13 forsynt med en torrekappe 25 a water trough 19 is arranged there to collect water squeezed out from the sheet forming zone 7 - Against the mantle surface 13 of the dryer cylinder 11, after the sheet forming zone 7?in the direction of rotation, a press roller 21 enclosed in a felt slot 23 is arranged. The cylinder 11 is also over a part 24 of its surface 13 provided with a drying jacket 25
som begrenser en varmetdrkesone 26. Mot mantelflaten 13 er der efter varmetorkesonen 26, regnet i rotasjonsretningen, plasert en sjaber 27. which limits a heat-drying zone 26. Against the mantle surface 13, after the heat-drying zone 26, counted in the direction of rotation, a scraper 27 is placed.
Maskinen på fig. 1 arbeider på fSigende måte:The machine in fig. 1 works in the following manner:
Fra innlopskassen 1 sproytes en fibersuspensjon 5 inn i arkformningssonen 8 mellom den lopende bane 9 og sylinderens mantelflate 13, som loper i samme retning som denne bane. På grunn av trykket mellom banen 9 og mantelflaten 13 blir fibersuspensjonen 5 avvannet gjennom banen 93og det utpressede vann oppsamles i trauget 19. Fibersuspensjonen 5 blir derved formet til en fiberbane 3 som, når banen 9 ledes bort i retning fra sylinderen 11, hefter til dennes mantelflate 13. Fiberbanen 3 blir videre avvannet ved pressning mot sylinderens mantelflate 13 ved hjelp av pressvalsen 21 i filtsloyfen 23. Ved presningen bedres kontakten mellom fiberbanen 3 og mantelflaten 13. Fiberbanen 3 folger stadig sylinderens mantelflate 13, som får varme tilfSrt, og blir torket på denne i varmetorkesonen 26 ved avdampning for i ferdig torket stand å avtas fra mantelflaten 13 ved hjelp av sjaberen 27. From the inlet box 1, a fiber suspension 5 is sprayed into the sheet forming zone 8 between the running path 9 and the cylinder's mantle surface 13, which runs in the same direction as this path. Due to the pressure between the web 9 and the mantle surface 13, the fiber suspension 5 is dewatered through the web 93 and the squeezed water is collected in the trough 19. The fiber suspension 5 is thereby formed into a fiber web 3 which, when the web 9 is led away in the direction from the cylinder 11, sticks to its mantle surface 13. The fiber web 3 is further dewatered by pressing against the cylinder's mantle surface 13 with the help of the press roller 21 in the felt loop 23. During the pressing, the contact between the fiber web 3 and the mantle surface 13 is improved. The fiber web 3 constantly follows the cylinder's mantle surface 13, which is supplied with heat, and is dried on this in the heat drying zone 26 during evaporation to be removed from the mantle surface 13 using the scraper 27 in a fully dried state.
Det særegne ved oppfinnelsen er at fiberbanen 3 alleredeThe peculiarity of the invention is that the fiber path 3 already
når den dannes i arkformningssonen, får direkte kontakt med den varme mantelflate 13 av sylinderen 11, og at denne direkte kontakt blir bibeholdt uten avbrudd under pressning og torkihg. when it is formed in the sheet forming zone, makes direct contact with the hot mantle surface 13 of the cylinder 11, and that this direct contact is maintained without interruption during pressing and drying.
Fig. 2 viser en maskin i henhold til oppfinnelsen utfortFig. 2 shows a machine according to the invention continued
for arkformning i flere trinn. Foruten de innretninger 1-27 som er beskrevet i forbindelse med fig. 1, finnes der her en annen innlopskasse 51j innrettet til å sproyte en fibersuspensjon 55 inn i for sheet forming in several steps. Besides the devices 1-27 which are described in connection with fig. 1, there is here another inlet box 51j arranged to spray a fiber suspension 55 into
en annen arkformningssone 57 > som er begrenset av en annen bane 59another sheet forming zone 57 > which is limited by another path 59
av vanngjennomtrengelig materiale og fiberbanen 3, som sitter fast på mantelflaten 13 av sylinderen 11. Banen 59 er utformet som en endelos sloyfe og loper over ledevalser 6l og en -strammevalse 63. Avstanden fra banen 59 til fiberbanen 3 bestemmes av strekkspenningen i banen 59 og av mottrykket fra den mellomliggende fibersuspensjon 55. Inne i sloyfen av banen 59 er der under arkformningssonen 57 plasert et vanntraug 65 til oppsamling av vann utpresset fra arkformningssonen 57-Den i arkformningssonen 7 dannede og i arkformningssonen 57 påbyggede fiberbane hefter til mantelflaten 13 av sylinderen 11 og avvannes ved pressning mellom pressvalsen 21 i filtersloy-fen 23 og mantelflaten 13. Efter pressningen folger fiberbanen sylinderens mantelflate 13, som får varme tilfort, hvorved gjenvæ-rende vann i fiberbanen avdampes og fores bort gjennom torrekappen 25, hvorefter den torkede fiberbane avtas fra mantelflaten 13 ved hjelp av sjaberen 27. of water-permeable material and the fiber web 3, which is attached to the mantle surface 13 of the cylinder 11. The web 59 is designed as an endless sloyfe and runs over guide rollers 6l and a tension roller 63. The distance from the web 59 to the fiber web 3 is determined by the tensile stress in the web 59 and of the back pressure from the intermediate fiber suspension 55. Inside the loop of the web 59, a water trough 65 is placed under the sheet forming zone 57 to collect water squeezed out of the sheet forming zone 57 - The fiber web formed in the sheet forming zone 7 and built up in the sheet forming zone 57 adheres to the mantle surface 13 of the cylinder 11 and is dewatered by pressing between the press roller 21 in the filter slot 23 and the mantle surface 13. After the pressing, the fiber web follows the cylinder's mantle surface 13, which receives heat, whereby remaining water in the fiber web is evaporated and fed away through the dryer jacket 25, after which the dried fiber web is removed from the mantle surface 13 using the scraper 27.
Be beskrevne utforelsesformer for oppfinnelsen utgjor bare eksempler, og innen den ramme som er angitt ved patentkravene, er ytterligere utforelsesformer mulige. Således kan de i og for seg-kjente anordninger til arkformning, pressning og torking variere betraktelig, og likeledes er det klart at maskinen kan modifiseres for arkformning i flere enn to trinn. The described embodiments of the invention are only examples, and within the framework indicated by the patent claims, further embodiments are possible. Thus, the per se devices for sheet forming, pressing and drying can vary considerably, and likewise it is clear that the machine can be modified for sheet forming in more than two stages.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE6641/65A SE313242B (en) | 1965-05-21 | 1965-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO130070B true NO130070B (en) | 1974-07-01 |
Family
ID=20269222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO00162805A NO130070B (en) | 1965-05-21 | 1966-04-29 |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US3531371A (en) |
| JP (1) | JPS493442B1 (en) |
| AT (1) | AT275307B (en) |
| BE (1) | BE680905A (en) |
| BR (1) | BR6679653D0 (en) |
| CH (1) | CH433957A (en) |
| CS (1) | CS159217B2 (en) |
| DE (1) | DE1511182B1 (en) |
| ES (2) | ES326940A1 (en) |
| FI (1) | FI45122C (en) |
| GB (1) | GB1146075A (en) |
| NL (1) | NL147806B (en) |
| NO (1) | NO130070B (en) |
| SE (1) | SE313242B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3625814A (en) * | 1969-06-13 | 1971-12-07 | Allis Chalmers Mfg Co | Multilayer papermaking machine with impervious roll web former |
| US3770581A (en) * | 1970-09-17 | 1973-11-06 | Appleton Mills | Single endless strand mounted in a series of parallel convolutions as a fibrous web supporting surface in a papermaking machine |
| US3880705A (en) * | 1971-07-20 | 1975-04-29 | Jan Van Tilburg | Expanding fibrous or plastic material by adding puffing agent under pressure and subsequent pressure release |
| US4011034A (en) * | 1972-07-08 | 1977-03-08 | Karl Kroyer St. Anne's Limited | Production of fibrous sheet material |
| US3876498A (en) * | 1973-09-14 | 1975-04-08 | Beloit Corp | Controlled forming wire separation on impervious roll of twin-wire papermaking machine |
| CH577070A5 (en) * | 1974-04-09 | 1976-06-30 | Escher Wyss Gmbh | |
| DE2526697C2 (en) * | 1975-06-14 | 1985-05-02 | Heinz-Gerhard 8011 Vaterstetten Müller | Device for the production of a fiber fleece tape |
| GB1502040A (en) * | 1975-12-30 | 1978-02-22 | Tampella Oy Ab | Method of drying a cardboard or a paper web and drying device for applying this method |
| SE7611074L (en) * | 1976-10-06 | 1978-04-07 | Moelnlycke Ab | WAY TO PRODUCE MONSTRATED TISSUE |
| AT377803B (en) * | 1982-09-22 | 1985-05-10 | Escher Wyss Gmbh | PAPER MACHINE |
| US4718981A (en) * | 1985-08-23 | 1988-01-12 | International Paper Company | Bleached kraft paperboard by densification and heat treatment |
| US4818342A (en) * | 1985-08-23 | 1989-04-04 | International Paper Company | Heat treatment of paper products |
| US4718982A (en) * | 1985-08-23 | 1988-01-12 | International Paper Company | Densification and heat treatment of paperboard produced from SCMP and other sulfite pulps |
| DE19900989A1 (en) * | 1999-01-13 | 2000-07-27 | Voith Sulzer Papiertech Patent | Belt for machines for the production of material webs |
| US6440273B1 (en) | 1999-12-16 | 2002-08-27 | Metso Paper Karlstad Aktiebolag (Ab) | Compact multilevel paper making machine for manufacturing a web of paper |
| DE20307055U1 (en) * | 2003-05-07 | 2003-07-17 | Schramm, Kurt, 72762 Reutlingen | Pulp dewatering machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2473269A (en) * | 1944-09-02 | 1949-06-14 | Rice Barton Corp | Papermaking machine |
| GB720165A (en) * | 1950-09-26 | 1954-12-15 | Joseph Winterburn | Improvements in or relating to paper making machines |
| US2693739A (en) * | 1951-10-01 | 1954-11-09 | Okawa Risaku | Papermaking machinery |
| US2929448A (en) * | 1958-06-16 | 1960-03-22 | West Virginia Pulp & Paper Co | Single stage continuous paper making process and apparatus |
| US3056718A (en) * | 1959-06-29 | 1962-10-02 | Masonite Corp | Process of treating hardboard surfaces |
| US3056719A (en) * | 1959-07-09 | 1962-10-02 | David R Webster | Continuous web forming machine |
| GB992299A (en) * | 1963-05-06 | 1965-05-19 | Bowater Res & Dev Company Ltd | Method of and apparatus for making a fibrous web |
| US3354035A (en) * | 1966-11-08 | 1967-11-21 | Albemarle Paper Co | Continuous process of drying uncoated fibrous webs |
-
1965
- 1965-05-21 SE SE6641/65A patent/SE313242B/xx unknown
-
1966
- 1966-04-20 DE DE19661511182 patent/DE1511182B1/en not_active Withdrawn
- 1966-04-29 NO NO00162805A patent/NO130070B/no unknown
- 1966-05-05 AT AT425266A patent/AT275307B/en active
- 1966-05-11 CH CH683866A patent/CH433957A/en unknown
- 1966-05-12 BE BE680905D patent/BE680905A/xx unknown
- 1966-05-18 NL NL666606907A patent/NL147806B/en unknown
- 1966-05-19 US US551276A patent/US3531371A/en not_active Expired - Lifetime
- 1966-05-19 BR BR179653/66A patent/BR6679653D0/en unknown
- 1966-05-20 ES ES0326940A patent/ES326940A1/en not_active Expired
- 1966-05-20 CS CS340566A patent/CS159217B2/cs unknown
- 1966-05-20 FI FI661325A patent/FI45122C/en active
- 1966-05-20 GB GB22436/66A patent/GB1146075A/en not_active Expired
- 1966-05-21 JP JP41032278A patent/JPS493442B1/ja active Pending
-
1967
- 1967-02-10 ES ES336676A patent/ES336676A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1511182B1 (en) | 1970-12-10 |
| NL6606907A (en) | 1966-11-22 |
| US3531371A (en) | 1970-09-29 |
| BR6679653D0 (en) | 1973-02-27 |
| JPS493442B1 (en) | 1974-01-26 |
| FI45122B (en) | 1971-11-30 |
| ES336676A1 (en) | 1968-01-16 |
| SE313242B (en) | 1969-08-04 |
| ES326940A1 (en) | 1967-08-01 |
| BE680905A (en) | 1966-10-17 |
| CH433957A (en) | 1967-04-15 |
| NL147806B (en) | 1975-11-17 |
| CS159217B2 (en) | 1974-12-27 |
| AT275307B (en) | 1969-10-27 |
| FI45122C (en) | 1972-03-10 |
| GB1146075A (en) | 1969-03-19 |
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