Traditionally wet end additives are dosed and mixed invarious stages and locations. Usually the delaytimesbetween the locations are long. The process is consid-ered complicated and difficult to manage and follow.This is how the mixing was done also in the first year ofWetend 15 years ago. That was the way it was alwaysdone!

The experience and research work started to teachand educate Wetend staff and conscious results ori-ented customers. Gradually mixing point was movedcloser and closer to headbox and forming. Additive con-sumption went down and savings increased, moreadditives were brought to flash mixing zone – the lat-est: strength starch. The results excited, sometimeseven surprised and have always led to new develop-ments and even better results.

Once the TrumpJet technology development originallywas started, the target was to reduce retention aidpolymer consumption, improve sheet quality and elim-inate totally use of fresh water in the application. Thetask was successful.

Wetend is today 15 years old company. Applicationshave expanded. Close to 500 TrumpJet systems havebeen supplied. There are more than hundred interna-tional patents supporting new developed technolo-gies.

Wetend is one of the first Cleantech companies inFinland and probably in the world too. The core innova-tion for the TrumpJet technology was developed inSavonlinna Finland starting year 1997 in a major tech-nology project initiated by Ahlstrom Machinery andUniversity of Lappeenranta. The name Cleantech wasdeveloped and given to the project – describing pro-ject objectives – and in practice Wetend TechnologiesLtd is a spin-off company from the project. The ownersof the company acquired at 2001 their early patentsfrom the Cleantech project and established the com-pany.

Recently Wetend joined the nationalmarketing organization to promote sustain-

able values. www.cleantechfinland.com

Jouni MatulaCEO

Cleantech

Finland

Valmet Technologies Inc and Wetend Technologies Ltd have enteredinto a partnership agreement. Valmet will exploit novel TrumpJetFlash Mixing technology in delivery projects for new and modernizedpaper and board making lines.

Petri Paukkunen, from Valmet states: We wantto bring to our customers world class mixing technology and also newfuture solutions.

We trust and count on strengthof R&D work and pilot plants of our own and our associates, especiallywhen they are closely used by Valmet and our partners.

For us the co-operation with Valmet has opened a new marketingchannel and technology development field, says the CEO Jouni Matulafrom Wetend Technologies. We can introduce new radical developed

VP, Sales and Marketing

We want that in the future there are new innovationsfor the wet end part of paper and board machines and products that willrevolutionize concepts and applications.

FOR PAPER AND BOARD MANUFACTURERS AND ASSOCIATED ORGANIZATIONS

WETENDNEWSPartnership of Valmet and Wetend creates newvalue for Customers

1/2016ISSUEENGLISH

Picture: Alhstrom magazine ”Me kaikki” 4/1997 inwhich JouniMatula and Jutta Nuortila-Jokinen descripe the Cleantech

project..

Coated fine paper production line in USA gains savingswith TrumpJet Flash Mixing Reactor technology

®

A novel reactor innovation of Wetend reactor mixing process withfast chaos mixing pattern applied to a headbox feed pipe surprisin-gly enables mixing various additives practically simulta-neously into the process flow. Traditionally anionic and cationic re-tention aid additives and e.g. strength starch are mixed in a long dis-tance from thick stock chest to headbox screen area.

––

In TrumpJet Flash Mixing Reactor mixing takes place simultaneouslywithin a second in chaos type of mixing process very close to headboxand forming part of paper or board machine.

A fine paper mill in USA, producing coated printing paper, installed theabove described process to the production line. Before strength starchand PAC fixing agent were added to thick stock line of the process, silicawas after the machine screen. After the TrumpJet installation, PAC ismixed before the screen, starch and anionic silica are mixed

accordingto the patented Flash Mixing Reactor concept .

Saving of PAC 25%Saving of Cationic Starch for strenght 10…30%, in average 25%Saving of Anionic Nanoparticle (Silica) 48%Good formationGood retention levels and system runnability

Based on the savings Wetend was awarded with an extra performancebonus by the satisfied customer

effectively,

very closeto each other in two close by, but in separate mixing stations

Results

�

�

�

�

�

TrumpJet Flash Mixing Reactor installation and results of a coated finepaper production line

TrumpJet Mixing stationsA, B and C

+Good sheet strenght+Improved dewatering

+Lower steam consumption+Use of fresh water eliminated

C

BA

InjectionPump

technologies to our customers a wider and more efficientmanner. Although Wetend has systematically conducted research anddevelopment work with the paper and board making cluster and withleading paper and board making companies, partnership with Valmetopens new window and platform for innovative development work.

globally in

Foam forming and foam generationtechnology

First commercial test productionplant in operation

“Valmet, Wetend, Sulzer Pumps and VTT work together todevelop a foam forming process for board and paper produc-tion. The first commercial test production plant has beensupplied. In addition, Wetend has supplied five pilot machinefoam generation plants. Numerous pilot production testssupport the development.

Micro gas bubbles are needed for foam generation but also formixing gases like carbon dioxide (CO ) for In-Line PCC productionor oxygen (O ) for white liquor oxidation. Shear forces in TrumpJetForte G gas mixer cut and disperse the high volume gas flow in aflash into tiny gas bubbles. Hundreds of billions of tiny bubbles

from <10 µm to 100 µm in size are generated and mixed evenlyinto process flow to headbox. The foam mixture looks like milk.

Foam generation and forming in controlled conditions gives excel-lent formation and new sheet characters including e.g. potentialto increase bulk.

2

2

– –

Station C: PACChemical saving 25%

Station A: SilicaChemical saving 48%

Station B: StarchChemical saving 25%

Petri Paukkunen, V.P. Sales and Marketing at Valmet Technologies (left)and Jouni Matula, CEO, Wetend Technologies Ltd, following test runs at

Valmet Rautpohja pilot plant.

Wetend provides trueCleantech technology–15yearsandmoving forward

NewsfromCEO’s

desk

Phot

o: L

eif L

indb

erg

Welcome to meet us inexhibitions and seminarsaround the world

TrumpJet mixers at Stora Enso Varkaus go forcontainerboard productionStora Enso Varkaus Mill in Finland is stepping into a new, dynamicera with the conversion of paper machine to produce containerboard. TrumpJet Mixers are staying onboard.

Varkaus in Finland is a town with a long industrial history. The areareceived from Stora Enso a significant investments to Varkaus Mill.During 2015, Stora Enso's Varkaus Mill converted its fine papermachine to produce high quality virgin-fibre-based containerboard -kraftliner. Varkaus was an ideal mill for this kind of conversion. It had anintegrated pulp mill, a power plant and a suitable paper machine. Inaddition, the mill is well located from a raw material supply point of viewand it had the necessary infrastructure and competence to run theproject successfully.

In the conversion, Varkaus mill will focus on products where strength,moisture resistance, purity and printability are important to thepackaging solution. These end uses include, for example, fruit,vegetables and food packaging, retail and industrial heavy duty.

Copyright

Wetend Technologies Ltd 2016

Wetend Technologies Ltd.Kaartilantie 757230 SavonlinnaTel. +358 10 836 0100

Chief Editor

Teija Pesonen

www.wetend.com

Flash Mixing Reactor tech-nology awarded in Franceby ATIP

Wetend Technologies Ltd was awarded with a silvermedal 'Palme d'Argent' in an innovation competi-tion of its new Flash Mixing Reactor Technology. Theaward was given by the French Paper IndustryTechnical Association (ATIP). Innovation Contest wasorganized in conjunction with the annual ATIPConference and Exhibition in Grenoble, France onNovember 24 26, 2015.

Core of the awarded technology:

– –

–

Fast TrumpJet FlashMixing Reactor with chaos-type-of-mixing phenomena.Result is a new revolutionary process to mix chemicalsinto the process. Chemical savings are surprisingly large.Cost savings can be 1 Million Euro per a single productionline.

Technology enables also generating composite-type ofpaper or board structure. Also new type of fiber-basedmaterials can be efficiently mixed close to headbox –such like synthetic long fibers, micro- and nanofibers andreactive additives. TrumpJet Flash Mixing Reactors arealready in commercial operation at several papermills.

®

The ATIP Innovation Award rewards innovative technolo-gies and solutions for pulp and paper industry. Theawards are highly regarded among the European pulpand paper industry.

In 2016 Wetend Technologies will be present in:

Tappi PaperCon 2016,

International Wood Biorefining Week (IWB) 2016

Meet our experts also at:

May 15 18 in Cincinnati OH,USA. During the exhibition you can find us at booth 607.In addition to the expo, Wetend will be presenting itsnewest technologies in two presentations on Wednesday18th.

At 8 10:00 "Eye Opening Operating Results of FlashMixing Reactor for Efficient Use of Wet EndAdditives”, Jussi MatulaAt 10:30 12:00 "Non-Spinning, Fluidizing FlashMixing Reactor for Synthetic Fibers, Nano- and MicroFibers and Agressive Chemicals for Board, Paper andTissue Production", Jouni Matula

, May24 26 May 2016 in Stockholm, Sweden. You can find usat Bioeconomy Innovation Forum -area.

Paper&Biorefinery Conference, 11 12 May, Graz,AustriaZellCheming, 28 30June, 2016, Frankfurt, GermanyPTS Paper & Board Symposium, 6 7 September,Münich, GermanyCIPTE 2016, October 11 13, Shanghai, ChinaPapFor 2016, 25 28 October in Saint Petersburg,Russia etc.

Look forward to meeting you!

–

–

–

–

–

––

––

�

�

�

�

�

�

�

“More with less” is a common result with TrumpJet systems suppliedby Wetend. This is a given fact when the new reactor technology isapplied very close to headbox.

Micro and nano fibers:

Fluidizing effect is strongly developed at very short period shear area ofa TrumpJet mixer unit. That is due to the high flow volume and highspeed of injection liquid and high shear. Additive is precipitatedinstantly in filaments, ligaments and finally into drops and dropletsinside the fast moving injection stream and mixed in a flash into themain process flow.

The effect is exploited also for a liquid gel e.g.made from either micro fibrillated cellulose (MFC) or nano fibrillated cel-lulose (NFC). Once the hard-to-mix-gel enters the “injection high velocityand short, shear influenced zone” it is fluidized and the gel behaves like

low viscose liquid. The fluidizing enables mixing of the MFC or NFC mate-rial effectively into stock. This is preferably made just before headboxtogether with wet end chemicals to bring most of the material into theformation zone. This way the material loss is minimized. MFC and NFCmaterials can provide new sheet composite characteristics. This isused to produce e.g. board or paper with improved properties such asincreased strength and reduced weight.

The first commercial production plant in Finland has been in operationsince 2014 for liquid packing board product. The concept makes theproduct as light as possible and e.g. stiffness and internal strength aremaintained. Naturally if weight is maintained, strength and stiffnessproperties can be increased.

More with Less

TrumpJet Flash Mixing System for MFC and NFC®

Gel type of MFC orNFC is fluidized

and mixed effec-tively and finally

formed to a com-posite board and toa consumer product

In-Line PCC™ Reactor was installed already in 2009 at SC-paperproduction line (750 tons/day) in Finland to produce precipitatedcalcium carbonate (PCC) loaded directly into fiber generatingfiller–fiber composite. The investment was completed after thoroughmill trials. Results exceeded the originally set objectives andprofitability target of the total capital investment. Recently the wellrunning system has been relocated to a bigger SC paper productionline of 1000 tons/day due to production rearrangements of the mill.

Profitability of the In-Line PCC is excellent. It is a cost effective new rawmaterial generating composite structures with fibers. The cost savingsare maximized by combining In-Line PCC and TrumpJet Flash Mixingtechnologies for wet end additives like strength starch, strength agents,sizing and retention aids additives.

™

In-Line PCC™ carbonation process integrated into PM/BM wet end andheadbox approach flow process is extremely fast. The average reactiontime in PCC crystallization is less than one second. In conventional on-site PCC production the carbonation process takes tens of minutes,even hours.

The key for high precipitation reaction speed is fast mass transfer ofreacting chemicals. This is achieved by TrumpJet Flash Mixingtechnology. Injection technology with counter rotating vortex pairs ofTrumpJet chemical mixers, gives flash, chaos kind of immediate andefficient mixing for CO gas and milk of lime slurry. The gas isprecipitated into tiny, fast dissolving micro bubbles together withprecipitated calcium hydroxide. The very high water volume ofpaper/board machine approach system stock flow enables rapid

®

®

2

dissolution of the reacting chemicals to water phase where instant PCCcrystallization process occurs.

The latest development result is patented innovation to add newadditives simultaneously into the carbonation process with milk of limeand carbon dioxide. The additive can be e.g. micro or nano fibrillatedcellulose that bring new strength and bulk/density characteristics toboard or paper.

The latest development results of In-Line PCC™

In-Line PCC process installed on line producing350 000 tons of SC paper annually

™

Today more than 50% of TrumpJet Flash Mixing systems go for boardproduction, applications are e.g. consumer products, food packagingand container boards.

In the Stora Enso Varkaus PM3 conversion project, the existingTrumpJet mixing stations of the fine paper line together with new mixerswere modernized to TrumpJet Flash Mixing Reactor system forlinerboard production. The new system flash mixes additives efficientlyprior to the headbox without any fresh water. Anionic and cationicchemicals are mixed into headbox feed stock very close to each otherfollowing the new chemical rector concept of Wetend. Consumption ofadditives is very low and process runnabilityis good.

Date

Conduct

ivity

[mS/c

m]

Wire pit

Machine chest

Clear filtrate

Cleaner 1st feed

Headbox

Improved net efficiency: In-Line PCC™ process binds colloidalsubstances decreasing conductivity in circulation waters. This leads tocleaner process and excellent runnability of the entire production line.

FLUIDIZING

FLUIDIZING MIXING FORMING END PRODUCT

END PRODUCT

TrumpJet Flash Mixing Reactor installedbefore attenuator tank of headbox.