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QualiFlex press sleeves

QualiFlex Press sleeves for every requirement

With QualiFlex, you always get the optimum press sleeve – tailored to your paper grade and the specific requirements of your paper machine.

The requirements for press sleeves are different not just for every paper grade but also for individual machines. QualiFlex offers the best solution for this challenge: a product portfolio designed to fit general grade specific requirements, with several possibilities for further individual customization.

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QualiFlex Service

The newly developed Voith Surface Scanner is a self-driven device that generates a seamless, full-width profile of your shoe press sleeve fully supported by pictures

Groove measurements on a shoe press sleeve

The inspection of shoe press sleeves is an important service during the whole runtime. With our Surface Scanner, groove dimension measurements on a shoe press sleeve are carried out during a shutdown. The measured values, such as groove depth, width and land width, offer information about the remaining lifetime, product condition and product performance on the machine.

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The ideal QualiFlex press sleeve for every paper grade

For every paper grade, the QualiFlex family offers the ideal choice of sleeve. QualiFlex Crest is characterized by good properties and provides reliable performance – both in dewatering and lifetime. QualiFlex Crown allows you to go even a step further to reach the next performance level. And our premium shoe press sleeve, QualiFlex QRun, reacts stably to compressions that occur especially in board, packaing and pulp machines.

QView

QualiFlex-QView

Make the invisible visible

Our new press sleeve QualiFlex QView is designed to make the invisible, visible! So, how does it work?

The special color of the QView press sleeve enables the inside of the press sleeve to be visible from the outside.

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QSoft

Minimal abrasion and maximum runtimes

With QualiFlex QSoft, Voith offers a shoe press sleeve for tissue machines with outstanding properties such as abrasion, heat and chemical resistance. It has already successfully proven these properties in very demanding tissue machines where it achieves exceptionally long runtimes.

QRun

Optimized impact resistance for your board, packaging and pulp machine

With QualiFlex QRun, Voith offers a shoe press sleeve that reacts stable to compressions. The result: fewer failures of shoe press sleeves. The improved elasticity of QualiFlex QRun guarantees high durability and thus reduces cracks and their propagation. These two properties ensure longer and reproducible running times.

CrestT and CrownT for Tissue

Ultimate dewatering designed specifically for your tissue machine

With CrestT and CrownT Voith offers two superior press sleeves for tissue shoe press applications which enable to obtain stable machine operating conditions and efficiency. Selected polyurethane materials ensure the highest possible abrasion resistance under challenging temperature condition. Open area and void volume can be designed exactly to your needs.

QualiFlex CrestT

QualiFlex CrestT for tissue machines shows very good material properties regarding wear resistance and performance stability. It features the proven structure and performs reliably even under the harsh conditions of a tissue shoe press.

QualiFlex CrownT

QualiFlex CrownT is based on a well-proven concept as well, with excellent abrasion resistance properties. The special heat resistant material formulation makes this press sleeve the perfect choice for very demanding applications.

CrestC and CrownC for Pulp

Excellent dewatering, tailored to your pulp machines

With Voith you have the option: QualiFlex CrestC for longest lifetime and QualiFlex CrownC for longest lifetime with tailored void volume for optimum dewatering of your pulp machine. Both sleeves set the industry benchmark for lifetime. For ultimate dewatering performance, QualiFlex CrownC is recommended with its unique blind-drilled surface.

QualiFlex CrestC

Through its smooth surface, the focus of QualiFlex CrestC is on high and reliable lifetime. The one-layer design using high quality polyurethane reduces the risk of delamination and the occurrence of cracks to a minimum.

QualiFlex CrownC

For ultimate dewatering performance, QualiFlex CrownC is recommended with its unique blind drilled surface. It temporarily stores more water than any conventional sleeve. This surface design prevents water backflow in generally slow running pulp machines.

CrestW and CrownW for Graphic

Get the best dewatering performance for your graphic paper machine

With QualiFlex CrestW and QualiFlex CrownW, Voith provides two superior press sleeves targeting best total performance for graphic paper machines. To reach optimum dewatering and best paper quality, grooved surfaces are the dominating choice for high-speed machines. With QualiFlex CrestW and QualiFlex CrownW, a large variety of surfaces is available. Groove shape, open area and void volume can be designed exactly to your needs.

QualiFlex CrestW

Good abrasion, crack and impact resistance provide more than the usual market lifetime and performance. Technical expertise, tailor-made surface designs and stability come along with the good material properties of QualiFlex CrestW.

QualiFlex CrownW

With its specific focus on the individual key performance indicators (abrasion, crack and impact resistance), the tailored material properties of QualiFlex CrownW take the sleeve’s performance to the next level while considering the specific requirements of your machine.

CrestK and CrownK for Board

Optimum dewatering performance for your board machine

For best total performance of your board machine, two factors must be achieved: consistent long life and optimal dewatering. Stable grooves that provide true, full void volume are vital for maximum dewatering performance. Under specific challenges at especially lower speeds our unique blind-drilled surface pattern optimizes efficiency and prevents water backflow without fail. The proven stability and reliability of QualiFlex CrestK is further exceeded by the enhanced abrasion, crack and impact resistance of QualiFlex CrownK.

QualiFlex CrestK

QualiFlex CrestK is characterized by good abrasion resistance, low risk of crack occurrence and consistent performance due to high impact resistance.

QualiFlex CrownK

QualiFlex CrownK raises the bar for long-time effective void volume and reliable achievement of the highest lifetimes. Its enhanced abrasion and impact resistance are the key factors.

CrestP and CrownP for Packaging

Optimum and efficient dewatering for your packaging machine

Packaging machines typically operate in abrasive conditions. Especially in combination with an increased impact risk, they require a wear resistant and reliable sleeve for efficient operation. With QualiFlex CrestP and QualiFlex CrownP, you can achieve optimum dewatering and best paper quality due to the several surface options. Shape, open area and void volume can be designed exactly to your needs.

QualiFlex CrestP

Good abrasion, crack and impact resistance provide more than the usual market lifetime and performance. Technical expertise, tailor-made surface designs and stability come along with the good material properties of QualiFlex CrestP.

QualiFlex CrownP

With its specific focus on the individual key performance, the tailored material properties of QualiFlex CrownP take the sleeve’s performance to the next level. As new benchmark it achieved record lifetime even with obvious signs of local deformations after impact.

References

Qualiflex sleeve

QualiFlex sleeve by Voith achieves record run time on PM 4 at Perlen Papier AG

Perlen Papier AG in Switzerland produces coated LWC paper and newsprint on its PM 4 paper machine. The QualiFlex CrownW press sleeve by Voith has now set a record run time on the PM 4.

Read the success story
QualiFlex QRun press sleeves

Voith’s QualiFlex QRun press sleeves deliver $240,000 in annual savings

A leading provider of packaging solutions in the U.S. was experiencing costly problems running their board and packaging machine, including short shoe press sleeve life and other inconclusive failures. The company asked Voith to assess the problems and recommend a solution that would improve production in the current run conditions.

Read the case study
QualiFlex QRun press sleeve

Voith’s QualiFlex QRun press sleeve brings mill back to high operation capacity

A leading provider of packaging solutions in the U.S. recently changed from Voith QualiFlex QRun shoe press sleeves to alternate sleeves provided by another company. As a result, the board and packaging machine was tested in a competitive trial, and the machine was running significantly slower on the competitor’s sleeves. The company asked Voith to assess the performance of those sleeves and recommend a solution that would improve machine speed and overall production.

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Ms. Bauer, Christina

Global Product Manager

m +49 151 44137844

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