Published O

© Valmet

SmaBig ExecutWhat if yoyour procparticularbring abo

This whitechanges in

The procethe area oCoteCondthe area othe target

October 31, 2014

all PrResu

tive summou could creacess? Not all gr problem, andut significant

e paper presen productivity

ess changes anof roll service, dor and CalLe

of fabrics, we ps and results a

rocesults mary ate a major pogame changind the assistant benefits for y

nts several exy, efficiency a

nalyzed in thiInfinikote th

eopard roll copresent the Wachieved are a

Small c

s Cha

ositive outcomg results requ

nce of a qualifiyour producti

xamples of smand profitabili

is paper are inhermal sprayinovers for coate

WavStar filter banalyzed.

hanges, big resu

anges

me for your muire a massivefied and skilleion line.

mall upgrades ity at mills ar

n three main ang and DryOner backing robags and Opt

ults

s Can

mill by makinge rebuild. Somed solution pr

that have proround the wor

areas: roll servnyx H coating

olls and calendtiProof formin

n Pro

g a relatively mmetimes a pinprovider such a

oduced signifirld.

vice, roll coveg are reviewedder rolls are ang fabrics. In

P

duce

minor changepoint focus o

as Valmet, can

icant positive

ers and fabricd. The

also discussedeach case stu

age | 1

e in n a n

e

cs. In

. In udy,

Published O

© Valmet

YankeeSCA Ortmthough thregrindingdemandedPM 9 earlValmet (F

width at trunning 1

Eight Yanspray gunInfinikotethe dryer distant me

Dryer cDaily maiValmet's mbecome othe adapta

Board mapaper modehydratichallengesfor install

High deIP Sun plathe needs

Figure 1. Ortmanneliminate

October 31, 2014

e dryer remann in Austrhe Yankee dryg – twice a yed a permanenlier, with goodFigure 1).

he reel of 6.92100% recycled

nkee experts pns to apply thee. The papermand the contiemory.

cylinder aintenance of dmill improvemne of China'sability and sta

achine dryers isture. It is noon process, afs due to their ation and unl

emands on aces a great deof their custo

Thermal sprayin applied Infinikoe grinding twice

egrindingria faced a fre

yer was only eear. After sevent solution ond results, they

2 meters. Cond pulp at 1,870

performed thee Infinikote. T

making surfacinuous run tim

anti-stickdryer cylinderment expert t leading prodability of their

are vital to eno surprise thafter the press large size and

loading.

end produeal of emphasomers, while s

ing in action. SCAote thermal spra

e a year.

Small c

g lessenedequent probleeight years olderal years of rence and for ally decided to s

nsequently, it 0 m/min and

e task using VThe result wase is excellent me of the mac

k coatingrs is crucial foteam reduced ducers of liquir end product

nhancing the at dryers are c

section. Neved considerabl

uct qualitysis on continusimultaneous

CA

aying to

hanges, big resu

d with them with chatted, the problemegrinding, thel. As SCA Ortpray the PM 4

"Today we hhave been ruyears withouresult and soYankee dryeoperation isOperation M

SCA Ortmafrom Viennproducing bis the widest

also has the lit produces 9

Valmet's renows what you caand the Infinchine. The pr

improvesor any paper m

IP Sun's dryeid packaging bts was better t

strength and onsidered onertheless, dryele weight, cou

uously improvly expanding

ults

hermal sper marks on t

ms became so e situation fintmann had ap4 Yankee dry

have nearly nounning troubut regrindingo is our macher with care as well center-lManager, SCA

ann is located na. The mill habathroom tisst tissue machlargest Yanke91,000 tonnes

wned Farros Man expect fromnikote coatingroblem with c

s productmanufacturerer cleaning timboard. Followthan ever.

smoothness one of the mostyer cylinders cupled with the

ving their papg their market

praying the Yankee onserious that i

nally became upplied thermayer too, with I

o Yankee weable-free for mog. We are veryhine operator and makes surlined," says JoA Hygiene Pro

in Pernitz, a as two tissue msue, napkins aine in Europe

ee dryer. The ms per year.

MZA grindinm a high-classg has greatly echatter marks

t quality r striving for eme, furtherinwing the on-si

of sheets and t important pacreate a varieteir price and t

per quality ant share, especi

P

n their PM 4. it required untenable and

al spraying onInfinikote from

ar. Both machore than twelv

y satisfied withwho handles

re the crepingosef Berger, oducts GmBH

one-hour drimachines

and hankies. Pe with a sheetmachine is

ng machine ans process like extended the l is now just a

excellence. g their ambitiite maintenan

to improvingarts of the ty of operationthe time requ

nd fully satisfyially in the

age | 2

Even

d n their m

hines ve h the the

g

H.

ive

PM 4 t

nd six

life of

ion to nce,

g

nal uired

ying

Published O

© Valmet

growing limaintenan

The mill tsurface ofand breakresulted in

An econValmet's mrecommencoating seefficient oexcellent sthat time-equipmenmill to saveffects of hdryer dim

MoreoverperformanThis leadschemical means bet

ProfessAfter receFirst, the tsolution btwo sets oDryOnyx

A profitThe succeBetween Jstick coatiDryOnyx brief dow

"Valmet's Since minthe releaseand profe

October 31, 2014

iquid packagence of dryers,

therefore needf the dryer cylk times had inn quality prob

nomic yet emill improvemnded the Dry

ervice (Figureon-site applicasuitability for-consuming hnt was not neeve time and avheating, such

mensions.

r, due to its innce. The coats to reduced wadditive in thtter doctorabi

sional servieiving the callteam identifie

based on the cof equipment

H anti-stick c

table partness of the projJune and Noving to no less H coatings, tntime and mi

service personimizing downe properties sssional servic

e market. Secu, preventing c

ded rapid assilinder of their

ncreased alarmblems in the e

efficient soment team

yOnyx H anti-e 2), designedation. DryOnr onsite work heating with geded. This allovoid any nega

h as possible ch

nnovative nanting maintainwear, improvehe polymer, thility and redu

ice in the sfrom Sun Pa

ed the locatiocustomer's preto work simucoating and c

nership ect was highl

vember 2013, than 25 drye

three suction inimal custom

onnel were verntime is very

significantly imce," says Mr. L

Small c

uring end procorrosion, and

istance when r PM 22 in Mmingly and thend product.

olution

-sticking d for nyx H's

meant gas-based owed the ative hanges to

nopolymer rels its hardnessed release prohe coefficient uced drive pow

shortest poaper, Valmet'sn and size ofeferred break

ultaneously oncompleted the

y regarded byValmet's exper cylinders onroll shells wer

mer losses wer

ry professionprecious to u

mproved. ValLi, Mill Manag

hanges, big resu

oduct quality d extending th

some stickingay of 2013. De sheet moist

lease materials even at the hoperties and aof friction is

wer consump

ossible tims mill improveall the corrod

k time. Valmetn the dryer cye repair on-sit

y the managemert service tean four differenre also servicere met throug

al and I was gus, it was cruclmet saved lotger of PM 17

Figure 2. D

ults

demands a stheir service li

g and corrosiDue to poor suture had abru

l, DryOnyx Hhigh temperata longer servic80% lower th

ption.

e ement expertded areas, andt swiftly assig

ylinders of PMte in the short

ment teams oam successivent machines. ed by the Valmgh successful

greatly satisfiecial that the brts of valuableat IP Sun.

Dryer cylinder su

trict focus on ife.

ion problems urface release ptly deviated

H has unparalltures found ince life. Due to

han in previou

s quickly arrid then proposgned two recoM 22. Both tea

test possible t

of IP Sun and ely applied theIn addition tomet team. Thcooperation.

ed with the coreak times we

e time for us w

urface before an

P

strengthenin

emerged on tproperties, fl. Eventually, t

leled surface n the dryer seo the special us materials, w

ived at the mised the optimoating teams aams applied thtime (Figure

Sun Paper. e DryOnyx Ho dryer cylind

he expectation

oating results.ere reduced anwith their effic

nd after coating

age | 3

ng the

the uff this

ection.

which

ill site. mal

and he 2).

H anti-der ns of

. nd cient

g.

Published O

© Valmet

"We can nthe servicwe only nVice Mill

About tInternatioboldly takproductiomill's annsolid bleacpackage b

Roll coBlade coaa flawless also needsoperatingstation no

Today, harunnabilitProblems

This happcoated pri

"The backdue to we

The hard-and was w

A solutionstations. Icover man

Wear- aWith the nbetter thareducing tchanges c

During wCoteCond

October 31, 2014

now see a signe was carried eed to clean iManager of P

the Mill onal Paper & king up the chon. A joint vennual output is ched board. W

board in the n

over extenting demandscoated paper

s to be easy to cycles. Usual

o longer meet

ard-coated coty, better papeusually appe

pened at Storainting paper p

king roll chanar at the cove

-coated coaterworst on the fi

n was sought It is particularnufacturer to

and markinnew polyuretn conventionthe need for ran be schedul

eb breaks, covdor polyureth

nificant decreout, the drye

it once in everPM 22 at IP Su

Sun Cartonbohallenge of annture betweenmore than 1.

With its newenear future.

nds roll cs much from r surface. The o clean and welly, backing rothe set paper

ater blades arer profiles, anar at the edge

a Enso Veitsilper year. The

ge interval waer edges," says

r blades worefirst and fourt

using Valmetrly well suitedsupply a poly

ng-resistanhane materia

nal roll coversroll changes. Wled according

vers are oftenhane material

Small c

ase in fluff aner cylinder neery shift. Valmun.

oard Co., Ltdswering to thn the America4 million tonst cooperatio

change intthe the backincover has to

ear-resistant iolls must be cr quality requi

re mostly usednd a longer uses where the r

luoto PM 1 inline includes

as quite shorts Markku Åm

e the cover edgth stations.

t's new CoteCd for coaters thyurethane cov

nt al and mixture. As a result, iWith online cg to other shu

n locally subjehas excellent

hanges, big resu

nd the surfaceeded to be cle

met helped us

., located in Yhe country's inan firm Internnes of liquid pn, IP Sun plan

tervals ong roll cover.be evenly harin order to m

changed whenirements.

d on blade coaseful life. The roll cover and

n Finland, a paan offline co

t, no more thaman, Productio

ge very quick

Condor polyurhat use hard-ver for this ap

e, the CoteCoit can be usedcoating in parutdown needs

ected to strongstrength prop

ults

e of the dryer eaned three orsave lots of cl

Yanzhou in Cncreased demnational Papepackaging bons to deliver 3

n coating It needs to b

rd and rough maintain good n the coating

ating stationsdownside is w

d the blade me

aper machineater with four

an 4–6 weekson Manager.

kly. The situat

rethane cover-coated coaterpplication.

ondor cover red on the machrticular, the d

on the line.

g forces that mperties, enabl

cylinder is ver four times eleaning time,"

hina's Shangdmand for liquid

er and China'soard, folding b300,000 tonn

g stationsbe very homog

across the en coating profiprofiles of the

s, with the advwear of the baeet.

e producing 1r blade coatin

on the blade

tion varied be

r, designed for blades. Valm

esists wear anhine much londifference is si

may cause deling it to resis

P

ery clean. Befoevery shift. No" says Mr. Ma

dong provincd packaging bs Sun Paper, tboxboard andes of sterile li

s geneous to ac

ntire roll widthfiles during loe blade coatin

vantages of beacking roll co

180,000 tonneng stations.

coating statio

etween station

or all blade comet is the first

nd marking mnger, considerignificant as r

nts in them. Tst even heavy

age | 4

ore ow a,

ce, is board the d quid

chieve h. It ng

ng

etter over.

es of

ons

ns

ating t

much rably

roll

The local

Published O

© Valmet

impacts wremoved doverall us

ExcellenAt Stora Enew CoteCthe first owas set as time, the cextended remained

During grremoved fnormal. Dbeen in usresults.

"The roll cwithout an"Within aacquire a

Great exThe Metsäsimilar prcoater witsecond staoperating

CoteCondoperated fnormal opthen, the cDuring grremoved, coating pr

The custoordered a was takenrolls will la controllTechnicia

October 31, 2014

without any mduring grindieful life of the

nt results lEnso VeitsiluoCondor coverperating cyclethe objective

cover was harto 24 weeks. Rgood for the

rinding, only from the diam

During the secse on the first

change intervny detriment

a year, we havsecond CoteC

xperience ä Board Husu

roblems with wth four blade ations, for wh time.

dor was first ifor 1,530 houperating cyclecover was notrinding, only which was m

rofiles remain

omer was impsecond cover

n into use, we last. This has ed manner," n

an, and Thom

marking. The aing is also rede cover.

led to a secoto PM 1, ther have been exe, continuous

e for the fourtrdly worn at aRunnability awhole period

0.4 millimetemeter, which icond operatint station for 20

val on the mosal impact on e managed to

Condor cover

also from aum mill in Swwear at backicoating statio

hich the rubbe

installed on thurs, which is foe of the rubbet significantly0.3 millimete

much less thanned good thro

pressed by Cotr for their stathaven't had tmade it muchnote Andreas

mas Bolén, Rol

Small c

amount of maduced, extend

cond ordere first experienxcellent (Figus operation foth station. Duall, so the cycland coating prd.

ers of materialis considerabl

ng cycle, the c0 weeks alrea

st problematirunnability o

o eliminate abr for the line."

a board miweden is anothing roll edgesons. The backer-covered ba

he second statour times lon

er-covered bacy worn duringers of the diamn usual. Runnoughout the o

teCondor andtions. "Since to worry abouh easier to plas Zakrisson, Oll Manager, H

hanges, big resu

aterial ing the

r nces of the ure 3). For or 15 weeks uring this le was rofiles

l was ly less than

cover has dy. The Veits

ic stations hasr profiles," say

bout five roll c

ill her mill produas Stora Ensoing roll wear

acking rolls ha

tion, where itger than the cking roll. Evg the operatiometer was ability and

operating cycl

d has already the CoteCondut how long than roll changeOperating Husum (Figur

ults

siluoto mill ha

s been extendays Janne Harjchanges and g

ucing coated o Veitsiluoto problem was

ad to be chan

t was

ven on.

le.

dor he es in

re 4).

Figure 3.to elimingrindingVeitsiluoMarko N

FpmT

as been very s

ded from the ijuniemi, Ope

grindings, wh

printing papedid. The line

s most severe ged every 240

. "Within a yearnate about five rgs," says Janne Hoto mill. ValmetNykänen on the

Figure 4. "It is noplan roll changesmanner," note AThomas Bolén of

P

satisfied with

initial situatioerations Manahich has led us

er, which hadincludes an oon the first an0-430 hours

r, we have manaroll changes and

Harjuniemi, t's (then Metso’sright.

ow much easier s in a controlled

Andreas Zakrissof the Husum mil

age | 5

the

on ager. s to

d offline nd

aged d

s)

to

d on and ll.

Published O

© Valmet

DoubliAfter the lthe final ctherefore conditionbarring re

Save coValmet hathese tougfiber reinfresulting i

These factrunning tisignifican

ExcellenWear resithe paper as in the cdirect conunder higDoctoringpaper alsoresistance

Cover weacover proalso in thequality anthe wear ointervals a

130 dayCalLeoparpaper milloading ofprofile pro

Longer The desighigh wearabsorbing

October 31, 2014

ing calendlong journey

chance to impplaced on cal

ns. A long, uniesistance, as w

sts with loas developed gh calenderinforcement, wiin a very smo

tors combine imes. This na

nt cost savings

nt roll covestance is impmachine, but

calender. The ntact with the gh loads and og for paper gro means specie of covers.

ar is often nofile – primarie roundness o

nd runnabilityon the cover iand fewer cov

ys and stillrd's extendedl, where CalLf 328 kN/m, aoblems, accor

running timgn of CalLeopr resistance, bg the flexing in

der roll ruthat the pulp

prove the quallender roll covinterrupted ru

well as high ni

ong, reliablCalLeopard, ag requiremenith a special fo

ooth surface.

to give CalLeanotechnologys.

er durabilitortant for all t perhaps nowdry, abrasiveelastic compo

often at very hrades such as Sial requiremen

n-uniform, wily in the crosof the cover. Wy suffer. Excesis minimal (Fiver changes.

l running d running timLeopard has acand still contirding to the m

mes underard also pays ut another ken the nip. The

Small c

untime w makes throulity of paper bvers, which arun that produip load durabi

le runs a new compo

nts. It is the firfocus on comb

eopard extremy newcomer i

ty rotating rolls

where as muche paper is in osite cover

high speeds. SC or DIP-bants for the we

which affects ts direction, b

When cover pssive local weaigure 5); redu

es are clear, inchieved a runnued running

mill.

r vibrationspecial attent

ey factor is thee advanced co

hanges, big resu

with new ugh all the papbefore it is rolre often requiuces consistenility even at h

osite cover forrst calender rbining durabi

mely high weais another step

s in h

ased ear

the ut

profiles deviatar may even pucing mainten

ncluding in a nning time of g. This has be

tion to barrine resistance oover materials

Figrunminloadev

ults

roll coverpermaking phlled up and shired to perfornt paper qualihigh speeds.

r calender rollroll cover to uility with a ho

ar and barringp towards tro

te enough fromput the cover nance costs th

multi-nip cal130 days at sp

een the longes

ng resistance. of the cover sus and cover st

gure 5. As the conning shows, uninimal, despite aad, doctoring anviation of the sc

r hases, calendehipped. Greatrm under chality requires ex

ls uniquely deutilize both a nomogeneous m

g resistance, aouble-free pap

m the specifieitself at risk.

hrough longe

lender at a Nopeeds of 1,170st run in this p

This is partlyurface to defotructure of Ca

over profile afteneven wear in thaggravating facnd abrasive SC pcale is less than

P

ering represent demands arellenging xcellent wear

esigned to menew polymer micro-structu

allowing extenpermaking an

ed values, papWith CalLeopr grinding

orth America0 m/min and position with

y achieved by rmation whilalLeopard res

r PM 12 TwinLinhe cross directiotors such as hig

paper. The diam100 μm.

age | 6

nts e

and

eet and

ure,

nded nd

per pard,

an SC a

hout

the le sist

ne’s on is gh

eter

Published O

© Valmet

the barrininfamous under vib

DoubledAt Stora Equality SCTwinLinerunning tithe new Calmost 1,6smooth thCalLeoparunder harkN/m anddoctored.

Anita Norlonger wit(Figure 6

New fi"The poorbottleneckPatrik Jan

"We weresolution, bwas not albags a tryfilter bagslooked at capacity, abags, the c

"Using cowonderedpromised moving fo

Stable c"Now thatsee the behave to insector's su

October 31, 2014

ng deformatiostar shape, peration.

d running tEnso KvarnsvC paper is proe multi-nip caimes of about

CalLeopard ha600 hours. Thhroughout, evrd has managrsh conditionsd speeds of 1,

rdenström, Tthout vibratio) more flexibi

ilter bagsr capacity of ok and the enti

nsson (Figure

initially skepbut because thll that attracti. The alternat

s, was not an ashowed that iand even if thcost of investm

rrugated filted how long th

a service life orward with o

capacity int we've evaluanefits and we

nvest in more urface area, w

on of its circumermitting lon

times at SCveden's PM 12oduced with aalender. After t 800 hours was nearly doubhe surface hasven up to a Raged this level os: pressures o130 m/min, w

echnician of ton." Longer ruility in planni

s increaseour disc filtersire process wa 7), Operation

ptical that a cohe idea of invive, we decidetive, with sectalternative forit was difficul

he service life ment is high.

r bags was a ne filter bags wof at least thr

our decision, d

crease ated the resulte know that thfilters," says P

which explains

Small c

mference intonger running t

C paper mi2 in Sweden, h

modern 5 + already achie

with CalJaguarbled that time remained ve

a of 0.17 μm. of performan

of more than 4while being

the PM 12 Twunning times ing roll chang

e capacitys was causingas negatively ns Engineer a

orrugated filtevesting in newed to give Valtors in corrugr us either. Thlt to achieve tof plates is lo

new thing forwould last. Buree years, we fdespite a few

ts after the filthe major benePatrik Janssons why dewater

hanges, big resu

o the times

ill high 5

eving r H, e, to ry

ce 400

winLine stateshave also giv

ges.

y g us major proaffected – fin

at Holmen's m

er bag could bw, costly disc f

met's WavStagated steel insthe references he promised nger than for

us, and we ut because Valfelt secure in misgivings."

ters have beenefit is in the inn. "The corrugring is now so

FMJ

pF

ults

s: "With CalLven Maintenan

oblems. They nding the righmill in Hallsta

be the filters ar filter tead of we

r filter

lmet

n running forncreased capagated fabric s

o much more

Figure 6. From lMaintenance MJohn Fridebring,"Good relationsperform well, suFridebring.

Leopard, we cance Manager

were a truly tt solution wa

a, Sweden.

r more than twacity, which msignificantly in

effective.

left to right: HåkManager at Storag, Product Sales Mships come fromuch as CalLeopa

Figure 7. Capainstallation ofhave been ablcapacity by 20Jansson.

P

an run much Håkan Kinnu

troublesome s a must," say

wo years, we means we donncreases the

kan Kinnunen, a Enso KvarnsveManager at Val

m good productsard," notes John

acity is up: "Sincf the filter bags le to increase th0%," says Patrik

age | 7

unen

ys

can n't

eden, and lmet.

s that

ce the we

he k

Published O

© Valmet

"The numto 1,200 tofilter bagsgetting a b

Speed f"Another speeds weContrary difficult toto 1 rpm, right mois

"Valmet inourselves.Before, weto be repla

Analysis"General dtaken dowweave andoperationValmet. B

Bottlen"With Wadisc filterswe're extr

ImprovfabricsThe right fabrics imwarmly w

The producontinuouyet with thdirectionsimportantKortelaine

October 31, 2014

mbers send a connes per days. Part of the ibit better at ca

fundamentpositive effec

e were runninto what one mo get the pulpwhich is ideasture content

nstalled the fi. One differene constantly haced was time

s – an aid idisc filter mai

wn and sampld can even ind

n discussions. Both maintena

neck eliminavStar filter bas is now propremely pleased

vements s

forming fabrmprove machinwelcomed by p

uction efficienusly growing. he same strens throughout t to have evenen, Product T

clear message.y – a 20 perceincrease is duearing for our

tal ct is that the nng at before, thmight believep to form a goal – the filterin

and thicknes

irst filter as pance from befohad bad fabrice-consuming

in service intenance is pes are sent to dicate the expWe really appance and serv

nated ags, the bottleerly dimensiod with the res

in packag

ric can bring ane efficiency

packaging gra

ncy and cost-One such ne

ngth propertiethe web, form

n basis weightTechnology M

Small c

. Since the insent rise – that e to us changdisc filters. H

nozzles do nothis was a big p, it's an advan

ood cake at higng is good andss. Since the c

art of the comre is that we ncs that had towhen you co

performed duValmet for a

pected servicepreciate the te

vice have beco

eneck was elimoned, the procsults!"

ging grad

about huge imand paper qu

ade producers

saving required is to makees as heavier g

mation has to t profiles as w

Manager for Fo

hanges, big resu

stallation, we'has been stabing the cleani

However, the m

t get clogged,"problem. Hig

ntage to be abgher speeds. Wd the fibers ha

cake is thicker

mprehensive snow change a be frequentlynsider that w

uring the autuanalysis. This e life, which isechnical suppome much eas

minated," Patcess is optimi

des with c

mprovements uality as well as.

rements of pae packaging pagrades. "To acbe good and

well as good prorming Fabri

ults

ve been able tble throughouing and cake main reason i

" Patrik Janssgh speeds alsole to run at a We've been abave time to bur than before,

service, but sinall sectors andy replaced. De

we had 360 sec

umn," says Pattells us how m

s handy. The aport we receivsier."

trik Jansson coized and the f

correct ch

in boardmakas provide ma

ackaging gradaper and boarchieve this in fines must berintability proics at Valmet.

to increase caut the time wedischarge shois the new filt

son continueso produce poo

lower speed, ble to reduce uild up into athe filters are

nce then we'vd fabrics at thetermining w

ctors to monit

trik Jansson. "much strengthanalysis also i

ve from Antti

oncludes. "Dfilter bags wor

hoice of f

king. The Optajor cost savin

es – liner andrd grades as lboth the cros

e bound on thoperties on lin.

P

apacity from 1e've been usinower system aer bags."

s. "At the highor, thin pulp cbecause it is the speed fro

a cake with the also cleaner

ve replaced the same time.

which sectors htor."

"One sector ish remains in tincludes techMäkinen at

Dewatering forrk really well

forming

tiProof forminngs – all benef

d fluting – areight as possibss- and machihe web. It is alner," says Pek

age | 8

1,000 ng the and

h cakes.

om 1.8 e .

hem

had

s the nical

r the –

ng fits

e ble, ine lso

kka

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