FI82107C - Edge gasket for short-dwell coating device - Google Patents
Edge gasket for short-dwell coating device Download PDFInfo
- Publication number
- FI82107C FI82107C FI872028A FI872028A FI82107C FI 82107 C FI82107 C FI 82107C FI 872028 A FI872028 A FI 872028A FI 872028 A FI872028 A FI 872028A FI 82107 C FI82107 C FI 82107C
- Authority
- FI
- Finland
- Prior art keywords
- web
- edge
- edge seal
- seal
- channel
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
- D21H23/34—Knife or blade type coaters
- D21H23/36—Knife or blade forming part of the fluid reservoir, e.g. puddle-type trailing blade or short-dwell coaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
- B05C11/047—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades provided with end dams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material
Landscapes
- Coating Apparatus (AREA)
- Paper (AREA)
Description
8210782107
Lyhytviipymäpäällystimen reunatiiviste Tämän keksinnön kohteena on patenttivaatimuksen 1 johdannon mukainen lyhytviipymäpäällystimen reunatiiviste .The present invention relates to a short stay coating edge seal according to the preamble of claim 1.
Aikaisemmissa päällystinratkaisuissa päällystystila on rajattu rainan reunoilta kumisilla tai muovisilla reunatiivis-teillä, jotka rajoittavat päällystemassan vuotamista ulos päällystystilasta.In previous coating solutions, the coating space is delimited at the edges of the web by rubber or plastic edge seals that limit the leakage of the coating mass out of the coating space.
Tunnetun tekniikan epäkohtana on se, että nykyisiä reunatii-visteitä on vaikea asentaa riittävän lähelle vastatelaa. Suuri välimatka aiheuttaa huonon tiiviyden, jolloin rainan päällystetyn osan reunan sijainti vaihtelee runsaasti leveyssuunnassa. Kumi- tai muovit i iviste myös kuluu ja hioo vastatelaa erityisesti mikäli päällystemassa on paakkuuntu-nutta. Päällystemassalla on myös taipumus tarttua tiivisteen pintaan ja aiheuttaa häiriöitä. Tiivisteen asennus on hankalaa ja aikaavievää, ja lisäksi ajonopeuden tai päällystese-oksen muuttaminen aiheuttaa lisäsäädön tarvetta.A disadvantage of the prior art is that current edge seals are difficult to install close enough to the counter roll. The large distance causes poor tightness, so that the position of the edge of the coated part of the web varies greatly in the width direction. The rubber or plastic material also wears and grinds the counter roll, especially if the coating mass is agglomerated. The coating composition also tends to adhere to the surface of the seal and cause interference. The installation of the seal is cumbersome and time consuming, and in addition, changing the driving speed or the coating mixture necessitates additional adjustment.
Tämän keksinnön tarkoituksena on poistaa edellä kuvatussa tekniikassa esiintyvät haitat ja saada aikaan aivan uudentyyppinen lyhytviipymäpäällystimen reunatiiviste.The object of the present invention is to obviate the disadvantages of the technique described above and to provide a completely new type of short-stay coating edge seal.
Keksintö perustuu siihen, että päällystimen tiivistekappale on varustettu onkaloilla, joiden kautta tiivistekappaleen yläpinnan ja rainan väliin on johdettavissa nestettä tiiviyden parantamiseksi ja tiivistekappaleen kulumisen pienentämiseksi .The invention is based on the fact that the sealing body of the coater is provided with cavities through which a liquid can be passed between the upper surface of the sealing body and the web in order to improve the tightness and reduce the wear of the sealing body.
Täsmällisemmin sanottuna keksinnön mukaiselle reunatiivis-teelle on tunnusomaista se, mikä on esitetty patenttivaatimuksen 1 tunnusmerkkiosassa.More specifically, the edge seal according to the invention is characterized by what is stated in the characterizing part of claim 1.
Keksinnön avulla saavutetaan huomattavia etuja.The invention provides considerable advantages.
Tiivistekappaleen ikä pitenee ja kaavinterän kuluminen hidastuu terän kuivareunan ‘osalta. Pastan kuivuminen kiinni 2 82107 kaavinterään pienenee veden jäähdytysvaikutuksen ansiosta ja pastan sisältämän veden kato paperirataan vähenee. Myös tii-vistekappaleen vaihtoon tarvittava aika lyhenee ja vaihto helpottuu. Tiivistekappale voidaan myös valmistaa pehmeämmästä materiaalista ja kuluttaa täsmällisesti muotoonsa vasta asennuksen jälkeen. Näin tiivistekappale saadaan lähemmäksi rainan pintaa, jolloin päällystettävän alueen reuna tulee tasaiseksi ja halutulle kohdalle. Vesivoideltu tiiviste soveltuu erilaisille päällysteseoksille ja ajonopeuksille ilman erityisiä säätöjä. Myös päällystämättömän kuivan reunan kostuttaminen parantaa ajettavuutta.The life of the sealing piece increases and the wear of the scraper blade slows down for the ‘dry edge’ of the blade. The drying of the paste attached to the 2 82107 scraper blade is reduced due to the cooling effect of the water and the loss of water contained in the paste on the paper web is reduced. The time required to replace the sealing piece is also reduced and the replacement becomes easier. The sealing piece can also be made of a softer material and can only be worn into its exact shape after installation. In this way, the sealing piece is brought closer to the surface of the web, whereby the edge of the area to be coated becomes flat and in the desired position. The water-lubricated seal is suitable for different coating compositions and driving speeds without special adjustments. Wetting the uncoated dry edge also improves driveability.
Keksintöä ryhdytään seuraavassa lähemmin tarkastelemaan oheisten piirustusten mukaisen sovellusesimerkin avulla.The invention will now be examined in more detail by means of an application example according to the accompanying drawings.
Kuvio 1 esittää halkileikattuna sivukuvantona lyhytviipymä-päällystintä, johon keksinnön mukainen reunatiiviste on asennettavissa.Figure 1 shows a cross-sectional side view of a short residence coater in which an edge seal according to the invention can be mounted.
Kuvio 2 esittää sivukuvantona yhtä keksinnön mukaista reuna-tiivistettä sovitettuna kuvion 1 mukaiseen lyhytviipymäpääl-lystimeen.Figure 2 shows a side view of one edge seal according to the invention fitted to the short residence coater according to Figure 1.
Kuvio 3 esittää etukuvantona kuvion 2 mukaista reunatiivis-tettä asennettuna lyhytviipymäpäällystimeen.Figure 3 shows a front view of the edge seal of Figure 2 mounted on a short residence coater.
Kuvio 4 esittää osittain halkileikattuna perspektiivikuvan-tona toista keksinnön mukaista reunatiivistettä.Figure 4 is a partially sectioned perspective view of another edge seal according to the invention.
Kuvion 1 mukaisesti lyhytviipymäpäällystin on tunnetun tekniikan mukaisesti sovitettu paperirainan 2 sille osalle, joka nojaa vastatelaan 1. Päällystin on rainan poikkisuunnassa likimain rainan 2 levyinen. Tyypilliset rainanopeudet ovat tämäntyyppisessä päällystimessä 500 - 1500 m/min ja tyypilliset päällystemäärät 5-16 g/m2. päällyste syötetään syöt-tökammion 16 kautta esimerkiksi (ei—esitettyjen) pumppujen avulla syöttökanavia 17 myöten applikointivyöhykkeelle 18, jossa osa päällysteseoksesta kiinnittyy rainaan 2. Ylimääräinen päällyste virtaa säätöreunan 4 yli takaisin kiertoon 3 82107 käytettäväksi uudelleen. Päällystinterällä 3 ylimääräinen päällystepasta kaavitaan pois. Terän 3 kulmaa ja puristusta säädetään paineilmaletkulla 5. Säätöreunan 4 ja kaavinterän 3 välistä aluetta vastatelan 1 kehällä kutsutaan applikoin-timatkaksi A.According to Fig. 1, according to the prior art, the short residence coater is arranged on the part of the paper web 2 which rests on the counter roll 1. The coater is approximately in the width of the web 2 in the transverse direction of the web. Typical web speeds in this type of coating are 500 to 1500 m / min and typical coating amounts are 5 to 16 g / m 2. the coating is fed through a feed chamber 16, for example by means of pumps (not shown) down the feed channels 17 to an application zone 18 where part of the coating mixture adheres to the web 2. The excess coating flows over the control edge 4 back into circulation 3 82107 for reuse. With the coating blade 3, the excess coating paste is scraped off. The angle and compression of the blade 3 are adjusted by the compressed air hose 5. The area between the adjusting edge 4 and the scraper blade 3 on the circumference of the counter roll 1 is called the application distance A.
Kuvion 2 mukaisesti keksinnön mukaiset reunatiivisteet 6 sovitetaan lyhytviipymäpäällystimen molempiin päihin rainan 2 alle likimain rainan 2 reuna-alueelle. Tiivistekappale 6 on kiinnitetty runkokappaleeseen 7. Tiivistekappaleen 6 materiaalina käytetään solukumia. Joustavaa materiaalia, esimerkiksi kumia, oleva runkokappale 7 on puolestaan kytketty vaikutuspisteestä 8 ei-esitettyihin siirtolaitteisiin, joilla runkokappale on siirrettävissä kuvion tasoa kohtisuorassa suunnassa, siis vastatelan 1 akselin suuntaisesti. Runkokappale 7 on varustettu vedensyöttöaukolla 9, joka jatkuu onkalona 11 tiivistekappaleeseen 6 ja avautuu suuttimeksi 10 tiivis tekappaleen 6 siinä päässä (etupäässä), joka kohtaa rainan 2 ensimmäisenä. Kuviossa esitetyssä tilanteessa terän 3 ja tiivisteen 6 takapään, samoin kuin terän ja runkokappa-leen 7 takapään väliin jää pieni rako. Kuvio esittää asen-nustilannetta. Ajotilanteessa rako pienenee, kun terää 3 painetaan kumiletkulla 5 kohti tiivistettä 6.According to Figure 2, the edge seals 6 according to the invention are applied to both ends of the short residence coater under the web 2 approximately in the edge area of the web 2. The sealing piece 6 is attached to the body piece 7. Cellular rubber is used as the material of the sealing piece 6. The body 7 of flexible material, for example rubber, is in turn connected from the point of action 8 to transfer devices, not shown, by means of which the body can be moved in a direction perpendicular to the plane of the pattern, i.e. parallel to the axis of the counter roll 1. The body 7 is provided with a water supply opening 9 which extends as a cavity 11 into the seal body 6 and opens as a nozzle 10 at the end (front end) of the seal body 6 which first meets the web 2. In the situation shown in the figure, a small gap remains between the blade 3 and the rear end of the seal 6, as well as between the blade and the rear end of the body part 7. The figure shows the installation situation. In the driving situation, the gap decreases when the blade 3 is pressed by the rubber hose 5 towards the seal 6.
Kuvion 3 mukaisesti tiivistekappale 6 on yhdistetty runko-kappaleeseen 7 lohenpyrstökiinnityksellä siten, että tiivis-tekappale 6 asennetaan paikoilleen rainan 2 kulun suuntaisesti. Runkokappaleen 6 yläpinnan tasolta tiivistekappale 6 taas levenee kohti rainan pintaa. Suutin 10 sijaitsee tii-vistekappaleen 6 etupään keskellä.According to Fig. 3, the sealing piece 6 is connected to the body piece 7 by a dovetail attachment, so that the sealing piece 6 is installed in place parallel to the passage of the web 2. From the plane of the upper surface of the body piece 6, the sealing piece 6 again widens towards the surface of the web. The nozzle 10 is located in the middle of the front end of the sealing piece 6.
Kuvion 4 mukaisessa ratkaisussa tiivistekappaleen 6 yläosa on varustettu pitkänomaisella uralla 15, jonka pituusakseli on rainan 2 kulun suuntainen. Uran 15 etuosassa olevaan suuttimeen johdetaan vettä terän 3 ja säätöreunan 4 väliin asennetun johdon 14 kautta. Ylimääräinen pasta virtaa pääasiassa säätöreunan 4 yli virtana C. Osa pastasta virtaa pois tiivistekappaleen 6 yli virtana D rainapinnan 2 alta sekä 4 82107 terän 3 ja tiivistekappaleen 6 välistä jatkaen kulkuaan sää-töreunaan 4 tehdyn aukon läpi virtana B palautuslipalle 12, jonka kautta pasta johdetaan uudelleen käytettäväksi. Tii-vistekappale 6 runkokappaleineen on liikuteltavissa sivusuunnassa säätöruuvin 13 ja säätötangon 19 avulla.In the solution according to Figure 4, the upper part of the sealing piece 6 is provided with an elongate groove 15, the longitudinal axis of which is parallel to the passage of the web 2. Water is supplied to the nozzle at the front of the groove 15 via a line 14 mounted between the blade 3 and the adjusting edge 4. The excess paste flows mainly over the adjusting edge 4 as a flow C. Some of the paste flows out over the sealing piece 6 as a current D below the web surface 2 and between the blade 3 and the sealing piece 6 continuing through the opening in the adjusting edge 4 use. The sealing piece 6 with its body pieces can be moved laterally by means of the adjusting screw 13 and the adjusting rod 19.
Rainan 2 ja tiivistekappaleen 6 väliin voidaan johtaa muutakin nestettä kuin vettä.A liquid other than water can be passed between the web 2 and the sealing piece 6.
IlIl
Claims (4)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI872028A FI82107C (en) | 1987-05-07 | 1987-05-07 | Edge gasket for short-dwell coating device |
GB8808818A GB2204255B (en) | 1987-05-07 | 1988-04-14 | Short-dwell coater |
SE8801604A SE8801604L (en) | 1987-05-07 | 1988-04-28 | SWITCHING ON SHORT-TERM COATING APPLIANCE |
FR8805988A FR2614807B1 (en) | 1987-05-07 | 1988-05-04 | END SEAL FOR A SHORT HOLDING COATING MACHINE |
DE19883815764 DE3815764A1 (en) | 1987-05-07 | 1988-05-09 | FINAL SEAL FOR A SHORT DURATION COATING |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI872028 | 1987-05-07 | ||
FI872028A FI82107C (en) | 1987-05-07 | 1987-05-07 | Edge gasket for short-dwell coating device |
Publications (4)
Publication Number | Publication Date |
---|---|
FI872028A0 FI872028A0 (en) | 1987-05-07 |
FI872028A FI872028A (en) | 1988-11-08 |
FI82107B FI82107B (en) | 1990-09-28 |
FI82107C true FI82107C (en) | 1991-01-10 |
Family
ID=8524444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI872028A FI82107C (en) | 1987-05-07 | 1987-05-07 | Edge gasket for short-dwell coating device |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE3815764A1 (en) |
FI (1) | FI82107C (en) |
FR (1) | FR2614807B1 (en) |
GB (1) | GB2204255B (en) |
SE (1) | SE8801604L (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0757335B2 (en) * | 1990-06-07 | 1995-06-21 | 株式会社康井精機 | Gravure coating supply device |
DE4022577C2 (en) * | 1990-07-16 | 1995-11-23 | Fibron Gmbh | Doctor device |
FI93242C (en) * | 1993-03-25 | 1995-03-10 | Valmet Paper Machinery Inc | Method and apparatus for limiting the coating width and / or preventing damage to the roll ends during coating or surface sizing of paper or similar web material |
US6139635A (en) * | 1994-07-08 | 2000-10-31 | Measurex Devron Inc. | Backing bar for coat weight control system |
DE4425137C1 (en) * | 1994-07-15 | 1995-09-14 | Feldmuehle Ag Stora | Scraper blade assembly margins held to paper web by water pressure block |
FI105260B (en) * | 1994-10-24 | 2000-07-14 | Valmet Paper Machinery Inc | Method and Arrangement for Adjusting the Coating Profile in Short-Dwell Type Coating |
DE29613687U1 (en) * | 1996-08-07 | 1996-10-24 | Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim | Applicator for direct or indirect application of a liquid or pasty coating medium to a running material web, in particular made of paper or cardboard |
DE19960748A1 (en) * | 1999-12-16 | 2001-06-21 | Voith Paper Patent Gmbh | Application device for paint/adhesive to moving paper length etc. has limiting element to limit width of application roller edge areas coated by etting nozzles |
DE10333121B4 (en) * | 2003-07-21 | 2006-01-19 | Kodak Polychrome Graphics Gmbh | Apparatus and method for coating material |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4426412A (en) * | 1982-09-13 | 1984-01-17 | Consolidated Papers, Inc. | Edge dam for paper coating apparatus and method |
DE3605613A1 (en) * | 1986-02-21 | 1987-08-27 | Jagenberg Ag | COATING DEVICE FOR COATING RAILWAYS |
-
1987
- 1987-05-07 FI FI872028A patent/FI82107C/en not_active IP Right Cessation
-
1988
- 1988-04-14 GB GB8808818A patent/GB2204255B/en not_active Expired - Fee Related
- 1988-04-28 SE SE8801604A patent/SE8801604L/en not_active Application Discontinuation
- 1988-05-04 FR FR8805988A patent/FR2614807B1/en not_active Expired - Fee Related
- 1988-05-09 DE DE19883815764 patent/DE3815764A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE3815764A1 (en) | 1988-11-24 |
FR2614807A1 (en) | 1988-11-10 |
GB8808818D0 (en) | 1988-05-18 |
FI872028A (en) | 1988-11-08 |
FI82107B (en) | 1990-09-28 |
FI872028A0 (en) | 1987-05-07 |
SE8801604D0 (en) | 1988-04-28 |
GB2204255B (en) | 1991-03-06 |
GB2204255A (en) | 1988-11-09 |
SE8801604L (en) | 1988-11-08 |
FR2614807B1 (en) | 1990-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: VALMET PAPER MACHINERY INC |