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SE465709B - PROCEDURE APPLIES DUPLEXIC COATING OF A CURRENT COURT BY TWO OPPOSED TRANSFER ROLLS - Google Patents

PROCEDURE APPLIES DUPLEXIC COATING OF A CURRENT COURT BY TWO OPPOSED TRANSFER ROLLS

Info

Publication number
SE465709B
SE465709B SE9001219A SE9001219A SE465709B SE 465709 B SE465709 B SE 465709B SE 9001219 A SE9001219 A SE 9001219A SE 9001219 A SE9001219 A SE 9001219A SE 465709 B SE465709 B SE 465709B
Authority
SE
Sweden
Prior art keywords
web
speed
transfer rollers
peripheral
coating
Prior art date
Application number
SE9001219A
Other languages
Swedish (sv)
Other versions
SE9001219A (en
SE9001219D0 (en
Inventor
T Eriksson
Original Assignee
Btg Kaelle Inventing Ab
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 Btg Kaelle Inventing Ab filed Critical Btg Kaelle Inventing Ab
Priority to SE9001219A priority Critical patent/SE465709B/en
Publication of SE9001219D0 publication Critical patent/SE9001219D0/en
Priority to DE69109670T priority patent/DE69109670T2/en
Priority to JP3507057A priority patent/JP3010068B2/en
Priority to PCT/SE1991/000206 priority patent/WO1991015306A1/en
Priority to AT91907563T priority patent/ATE122269T1/en
Priority to EP91907563A priority patent/EP0523144B1/en
Publication of SE9001219A publication Critical patent/SE9001219A/xx
Publication of SE465709B publication Critical patent/SE465709B/en
Priority to FI924374A priority patent/FI106934B/en

Links

Classifications

    • 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
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
    • 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
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D21H23/58—Details thereof, e.g. surface characteristics, peripheral speed

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Telephone Function (AREA)
  • Position Input By Displaying (AREA)
  • User Interface Of Digital Computer (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Sliding-Contact Bearings (AREA)
  • Powder Metallurgy (AREA)
  • Coating Apparatus (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Control Of El Displays (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

A process for two-faced coating of a travelling web (7) by means of two juxtaposed transfer rollers (3, 5) while depositing a coating agent on both sides of the web (7), the transfer rollers (3, 5) being imparted mutually different peripheral speeds, at least one of said speeds deviating from the speed of the web (7), both transfer rollers (3, 5) and web (7) moving in the same direction.

Description

15 20 25 30 35 465 709 hastigheter avviker från den hastighet med vilken banan framfö- res. Därjämte kännetecknas förfarandet enligt uppfinningen av att de bada överföringsvalsarna i anslutning till beröringsstäl- let med banan rör sig at samma hall och àt samma hall som banan, varjämte överföringsvalsarna har en ythardhet av upp till ca 60 Shore A och bibringas ett anliggningstryck i nypet av upp till ca 10 N/mm. 15 20 25 30 35 465 709 speeds deviate from the speed at which the track is driven. In addition, the method according to the invention is characterized in that the two transfer rollers in connection with the point of contact with the web move at the same hall and at the same hall as the web, and the transfer rollers have a surface hardness of up to about 60 Shore A and a contact pressure is applied in the nip of up to about 10 N / mm.

Vid en föredragen utföringsform av förfarandet enligt upp- finningen avviker de båda överföringsvalsarnas periferihastighe- ter frán banans rörelsehastighet, och det är särskilt föredraget att den ena överföringsvalsens periferihastighet överstiger ban- hastigheten medan den andra överföringsvalsens periferihastighet understiger banhastigheten. Det är härvid föredraget att över- föringsvalsarnas periferihastigheter avviker fràn banhastigheten i ungefär samma grad. Även om graden av avvikelse fràn banhastigheten ej är sär- gskilt kritisk är det föredraget att den ej överstiger ca 5%, och ett föredraget intervall avseende avvikelsen i periferihastighet är fràn ca 0,5 till ca 2,5%.In a preferred embodiment of the method according to the invention, the peripheral speeds of the two transfer rollers deviate from the speed of movement of the web, and it is particularly preferred that the peripheral speed of one transfer roller exceeds the web speed while the peripheral speed of the other transfer roller is less than the web speed. In this case, it is preferred that the peripheral speeds of the transfer rollers deviate from the web speed to approximately the same degree. Although the degree of deviation from the web speed is not particularly critical, it is preferred that it not exceed about 5%, and a preferred range for the deviation in peripheral speed is from about 0.5 to about 2.5%.

För àstadkommande av optimalt resultat under undvikande av den kända teknikens brister arbetar man vid förfarandet enligt uppfinningen vid ett valstryck i nypet mellan de mostställda överföringsvalsarna som understiger det vanligen förekommande, och såsom anges ovan bibringas överföringsvalsarna ett an- liggningstryck i nypet av upp till ca 10 N/mm.In order to achieve optimum results while avoiding the shortcomings of the prior art, the method according to the invention works at a roller pressure in the nip between the must-placed transfer rollers which is less than usual, and as stated above the transfer rollers are provided with an abutment pressure of up to about 10 N / mm.

Det är likaså kännetecknande för uppfinningen att använda valsar vilka är utförda av ett mjukt material, nämligen med en ythàrdhet av högst ca 60 Shore A.It is also characteristic of the invention to use rollers which are made of a soft material, namely with a surface hardness of at most about 60 Shore A.

I syfte att uppnå en viss frammatningseffekt pà banan är det lämpligt att bringa denna till större omslutning mot den överföringsvals, vars periferihastighet överstiger banans.In order to achieve a certain feed-on effect on the web, it is expedient to bring it to a larger enclosure against the transfer roller, the peripheral speed of which exceeds the web.

Sammantaget är det speciellt föredraget att överförings- valsarna bibringas ett anliggningstryck i nypet av fràn ca 1 till ca 10 N/mm, och att använda överföringsvalsar med en yt- hàrdhet av högst ca 60 Shore A.Overall, it is especially preferred that the transfer rollers be subjected to a contact pressure in the nip of from about 1 to about 10 N / mm, and to use transfer rollers with a surface hardness of at most about 60 Shore A.

Tekniken enligt föreliggande uppfinning är speciellt lämp- lig för bestrykning av löpande pappersbanor. 10 15 20 25 30 35 465 709 Uppfinningen kommer i det följande att beskrivas närmare genom ett icke inskränkande exempel i anslutning till bilagda ritning, som i en sidovy schematiskt visar en bestrykningsanord- ning för tillämpning av förfarandet enligt uppfinningen.The technique of the present invention is particularly suitable for coating running paper webs. The invention will be described in more detail below by means of a non-limiting example in connection with the accompanying drawing, which in a side view schematically shows a coating device for applying the method according to the invention.

Den pà ritningen illustrerade bestrykningsanordningen ge- nerellt betecknad 1 innefattar tva överföringsvalsar 3 och 5, vilka roterar i den med pilarna a) angivna riktningen. Mellan dessa bada överföringsvalsar 3,5 frammatas en pappersbana 7 i den med pilen b) angivna riktningen. Överföringsvalsarna 3,5 pàföres bestrykningssmet medelst applikatorer 13 resp. 15, och överskott av bestrykningssmet 21,23 àterföres till behållare 17,19. Doseringsvalsarna 9,11 bibringas en rotationsriktning som framgàr av pilarna c) och har en hastighet som är betydligt lägre än överföringsvalsarnas 3,5 rotationshastighet.The coating device illustrated in the drawing, generally designated 1, comprises two transfer rollers 3 and 5, which rotate in the direction indicated by arrows a). Between these two transfer rollers 3,5 a paper web 7 is advanced in the direction indicated by the arrow b). The transfer rollers 3,5 are applied to the coating paste by means of applicators 13 resp. 15, and excess coating batter 21.23 is returned to container 17.19. The metering rollers 9,11 are imparted in a direction of rotation which appears from the arrows c) and have a speed which is considerably lower than the rotational speed of the transfer rollers 3,5.

Såsom framgår av ritningen framföres pappersbanan 7 sa, att den kommer till anliggning mot den övre valsens mantelyta över ett sektorsegment som motsvarar ca 30° av omkretsen. An- liggningen mot den nedre valsen är teoretiskt sett linjeformad men pà grund av valsarnas mjukhet nagot större än den teoretis- ka.As can be seen from the drawing, the paper web 7 is said to abut against the mantle surface of the upper roller over a sector segment corresponding to about 30 ° of the circumference. The abutment against the lower roller is theoretically linear, but due to the softness of the rollers somewhat larger than the theoretical one.

I det beskrivna exemplet användes relativt mjukt gummi i det material som bildar ytan av överföringsvalsarna 3,5 och hàrdheten är ca 50 Shore A. Nyptrycket mellan valsarna är ca 5 N/mm. Vidare framföres valsarna med periferihastigheter som av- viker från banhastigheten, i det att överföringsvalsen 3 har en periferihastighet som överstiger den för pappersbanan 7 med ca 1,51, medan överföringsvalsens 5 periferihastighet understiger den för pappersbanan 7 med ca 1,5%. Genom den större anliggning- en mot överföringsvalsen 3 àstadkommes en viss frammatningsef- fekt av pappersbanan 7, medan hastighetsskillnaderna ger en för- delaktig utstrykningseffekt pà pappersbanans 7 bàda sidor.In the example described, relatively soft rubber is used in the material forming the surface of the transfer rollers 3.5 and the hardness is about 50 Shore A. The nip pressure between the rollers is about 5 N / mm. Furthermore, the rollers are conveyed at peripheral speeds deviating from the web speed, in that the transfer roller 3 has a peripheral speed which exceeds that of the paper web 7 by about 1.51, while the peripheral speed of the transfer roller 5 is less than that of the paper web 7 by about 1.5%. Due to the larger abutment against the transfer roller 3, a certain feed-in effect is achieved by the paper web 7, while the speed differences give a favorable smoothing effect on both sides of the paper web 7.

Den överraskande förbättring av bestrykningen som erhålles vid förfarandet enligt föreliggande uppfinning gäller framför allt den s.k. film-split-effekten, som orsakar apelsinskals- mönstring i det pàförda skiktet. Det laga anpressningstrycket möjliggör olikheter i överföringsvalsarnas 3,5 periferihastighe- ter, dels i förhållande till varandra, dels i förhållande till pappersbanans 7 frammatningshastighet.The surprising improvement of the coating obtained in the process according to the present invention applies in particular to the so-called the film-split effect, which causes orange peel patterning in the applied layer. The low pressing pressure enables differences in the peripheral speeds of the transfer rollers 3.5, partly in relation to each other, partly in relation to the feed speed of the paper web 7.

Claims (8)

10 15 20 25 30 35 465 709 PATENTKRAV10 15 20 25 30 35 465 709 PATENT CLAIMS 1. Förfarande för tvàsidig bestrykning av en löpande bana medelst tva motställda överföringsvalsar, mellan vilka banan löper under avsättning av bestrykningsmedel pà banans båda si- dor, kännetecknat därav, att överföringsvalsarna bibringas sins- emellan olika periferihastigheter, och åtminstone den ena av dessa avviker från banhastigheten, varvid dock både överförings- valsar och bana rör sig åt samma håll, varjämte överföringsval- sarna har en ythàrdhet av upp till ca 60 Shore A och bibringas ett anliggningstryck i nypet av upp till ca 10 N/mm.Method for two-sided coating of a continuous web by means of two opposing transfer rollers, between which the web runs while depositing coatings on both sides of the web, characterized in that the transfer rollers are imparted between different peripheral speeds, and at least one of them deviates from the web speed, however, both transfer rollers and web move in the same direction, and the transfer rollers have a surface hardness of up to about 60 Shore A and are applied an abutment pressure in the nip of up to about 10 N / mm. 2. Förfarande enligt patentkravet 1, kännetecknat därav, att bada överföringsvalsarnas periferihastigheter avviker från banans rörelsehastighet.Method according to Claim 1, characterized in that both peripheral speeds of the transfer rollers deviate from the speed of movement of the web. 3. Förfarande enligt patentkravet 2, känntecknat därav, att den ena överföringsvalsens periferihastighet överstiger ban- hastigheten, medan den andra överföringsvalsens periferihastig- het understiger banhastigheten.Method according to claim 2, characterized in that the peripheral speed of one transfer roller exceeds the web speed, while the peripheral speed of the other transfer roller is less than the web speed. 4. Förfarande enligt patentkravet 3, kännetecknat därav, att bada periferihastigheterna avviker fràn banhastigheten i ungefär samma grad.A method according to claim 3, characterized in that both peripheral velocities deviate from the web velocity to approximately the same degree. 5. Förfarande enligt något av patentkraven 2 till 4, kän- netecknat därav, att periferihastigheternas avvikelse från ban- hastigheten är upp till ca 5%.Method according to one of Claims 2 to 4, characterized in that the deviation of the peripheral speeds from the web speed is up to about 5%. 6. Förfarande enligt patentkravet 5, kënnetecknat därav, att avvikelsen ligger inom intervallet ca 0,5 till ca 2,52.A method according to claim 5, characterized in that the deviation is in the range of about 0.5 to about 2.52. 7. Förfarande enligt nagot av patentkraven 3 till 6, kän- netecknat därav, att banan bringas till större omslutning mot den överföringsvals, vars periferihastighet överstiger banans, varigenom en viss frammatningseffekt uppnås.A method according to any one of claims 3 to 6, characterized in that the web is brought to a larger enclosure against the transfer roller, the peripheral speed of which exceeds the web, whereby a certain feed-in effect is achieved. 8. Förfarande enligt patentkravet 3, 4 eller 5, känne- tecknat därav, att överföringsvalsarna bibringas ett anligg- ningstryck i nypet av fràn ca 1 till ca 10 N/mm, och att över- föringsvalsarna uppvisar en ythàrdhet av ej mer än ca 100 P&J.Method according to claim 3, 4 or 5, characterized in that the transfer rollers are subjected to an abutment pressure in the nip of from about 1 to about 10 N / mm, and that the transfer rollers have a surface hardness of not more than about 100 P&J.
SE9001219A 1990-04-03 1990-04-03 PROCEDURE APPLIES DUPLEXIC COATING OF A CURRENT COURT BY TWO OPPOSED TRANSFER ROLLS SE465709B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE9001219A SE465709B (en) 1990-04-03 1990-04-03 PROCEDURE APPLIES DUPLEXIC COATING OF A CURRENT COURT BY TWO OPPOSED TRANSFER ROLLS
DE69109670T DE69109670T2 (en) 1990-04-03 1991-03-18 METHOD FOR THE TWO-SIDED COATING OF A MOVING TRAIN.
JP3507057A JP3010068B2 (en) 1990-04-03 1991-03-18 Coating method
PCT/SE1991/000206 WO1991015306A1 (en) 1990-04-03 1991-03-18 Process for two-faced coating of a travelling web
AT91907563T ATE122269T1 (en) 1990-04-03 1991-03-18 METHOD FOR COATING ON BOTH SIDES OF A MOVING WEB.
EP91907563A EP0523144B1 (en) 1990-04-03 1991-03-18 Process for two-faced coating of a travelling web
FI924374A FI106934B (en) 1990-04-03 1992-09-29 A method of duplexing a moving web

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9001219A SE465709B (en) 1990-04-03 1990-04-03 PROCEDURE APPLIES DUPLEXIC COATING OF A CURRENT COURT BY TWO OPPOSED TRANSFER ROLLS

Publications (3)

Publication Number Publication Date
SE9001219D0 SE9001219D0 (en) 1990-04-03
SE9001219A SE9001219A (en) 1991-10-04
SE465709B true SE465709B (en) 1991-10-21

Family

ID=20379084

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001219A SE465709B (en) 1990-04-03 1990-04-03 PROCEDURE APPLIES DUPLEXIC COATING OF A CURRENT COURT BY TWO OPPOSED TRANSFER ROLLS

Country Status (7)

Country Link
EP (1) EP0523144B1 (en)
JP (1) JP3010068B2 (en)
AT (1) ATE122269T1 (en)
DE (1) DE69109670T2 (en)
FI (1) FI106934B (en)
SE (1) SE465709B (en)
WO (1) WO1991015306A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243518C2 (en) * 1992-12-22 1996-03-28 Feldmuehle Ag Stora Devices for applying liquid to both sides of a material web and method for applying a liquid to a material web with these devices
DE19511050A1 (en) * 1995-03-25 1996-09-26 Voith Sulzer Papiermasch Gmbh Method and device for producing a paper web having a CF layer
FR2746264B1 (en) * 1996-03-25 1998-05-22 Picardie Lainiere METHOD FOR MANUFACTURING THERMAL-STICKING LINING AND THERMAL-STICKING LINING THUS OBTAINED
EP0799934A1 (en) * 1996-04-03 1997-10-08 Voith Sulzer Papiermaschinen GmbH Process and apparatus for applying a CB coat on a paper web
WO1999023308A1 (en) * 1997-10-31 1999-05-14 Beloit Technologies Inc. High speed coating apparatus and method
HUP0302607A3 (en) * 2000-12-22 2004-03-29 Tarkett Sas Method for indirect thin-layer coating and device therefor
ITMI20010265A1 (en) * 2001-02-09 2002-08-09 Ind Cartarie Tronchetti Spa APPARATUS AND METHOD FOR APPLYING A FLUID TO A PAPER TAPE
FI110957B (en) * 2001-12-10 2003-04-30 Metso Paper Inc Method and apparatus for forming a multilayer coating
SE529814C2 (en) 2006-04-11 2007-11-27 Mattssonfoeretagen I Uddevalla Wire-engraved engraving roll and method of making it
DE102006044822A1 (en) * 2006-09-20 2008-04-03 Voith Patent Gmbh Process for producing a coated paper, cardboard or other fibrous web

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8001814A (en) * 1980-03-27 1981-10-16 Stork Brabant Bv METHOD AND APPARATUS FOR COATING A POROUS SUBSTRATE
DE3417487A1 (en) * 1984-05-11 1985-11-21 J.M. Voith Gmbh, 7920 Heidenheim DEVICE FOR APPLYING A LIQUID ON A RUNNING TRAIN
GB2213406B (en) * 1987-12-08 1992-05-20 Molins Plc Coating apparatus and method
GB8904112D0 (en) * 1989-02-23 1989-04-05 Wiggins Teape Group Ltd Process for applying microcapsule-containing compositions to paper

Also Published As

Publication number Publication date
SE9001219A (en) 1991-10-04
SE9001219D0 (en) 1990-04-03
FI924374A (en) 1992-09-29
DE69109670T2 (en) 1995-09-07
JPH05505971A (en) 1993-09-02
EP0523144B1 (en) 1995-05-10
ATE122269T1 (en) 1995-05-15
EP0523144A1 (en) 1993-01-20
JP3010068B2 (en) 2000-02-14
WO1991015306A1 (en) 1991-10-17
FI106934B (en) 2001-05-15
FI924374A0 (en) 1992-09-29
DE69109670D1 (en) 1995-06-14

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