Kuraray Poval™
in Tissue
Applications

Kuraray Poval™ in Tissue Applications

Meeting the increasing
demand for high-quality
tissue
The consumption of tissue, including high-quality tissue grades, is growing
globally. New technologies have been introduced for the manufacture of thesehigh-quality structured tissue products. In addition to the widely used TAD
technology, new technologies like ATMOS, NTT, eTAD and QRT have beenbrought to the market. A common feature of all these structured tissue technologies is that they require higher amounts of Yankee coating as comparedto the conventional Dry Crepe Technology (DCT). Kuraray Poval™ polyvinylalcohols (PVOH) are playing an important role in the Yankee coating package
used in the manufacture of high-quality structured tissue.
Kuraray is the world’s leading producer of polyvinyl alcohols,with a vast portfolio of grades sold under the trade names
Kuraray Poval™ and Elvanol™. Kuraray has a global sales network with manufacturing and technical service laboratories
in Asia, Europe, and the USA. The Kuraray product portfolio
includes a wide range of conventional polyvinyl alcohol gradeswith different degrees of hydrolysis and molecular weights, aswell as many modified speciality grades.

Yankee coating, mg/m2

Ultra Premium

Kuraray Poval™ polyvinyl alcohols are used in tissue
manufacturing as part of the Yankee coating. In addition
Elvanol™ polyvinyl alcohols are used in the converting of tissue products as an adhesive for gluing the tissue paper plies
together.

PremiumNTTStandardAtmos

TAD

eTAD
QRT

DCT
PVOH

Bulk cc/g

Kuraray Poval™ in Yankee Coating
NTT, eTAD and QRT are technologies from Valmet Oyj and Atmos
is a technology from Voith GmbH & Co. KGaA.

2

Bulk cc/g
Bulk cc/g

New Kuraray Poval™
200-88 KXConventional
PVOH

Novel polyvinyl alcohol

Introducing a novel highmolecular weight Kuraray
Poval™ polyvinyl alcohol for
optimized Yankee coating
performance

100000Conventional polyvinyl alcohols are linear nonionic polymers,
with the highest molecular weight grades having viscosities up
to 100 mPas in a 4% solution in water. Kuraray has developed
a novel ultra-high molecular weight polyvinyl alcohol gradewith an branched structure.

Viscosity (mPas)*

10000

1000

100The new Kuraray Poval™ 200-88 KX grade, with a 4% viscosity
around 200 mPas, provides a more shear thinning rheologicalbehavior together with an increased extensional viscosity.
Kuraray Poval™ 200-88 KX gives a wider operating window
and improved sheet pick up at the Yankee dryer, yielding improved paper machine runnability. This improved runnability
increases machine productivity and enables the reduction of
the Yankee coating amount needed.

10102468Concentration (%)*1 mPas = 1 cp
Kuraray Poval™ 200-88 KX
Kuraray Poval™ 49-88
Kuraray Poval™ 22-88

Kuraray's polyvinyl alcohol products recommended for tissue manufacturingProductViscosity, 4% solution, mPas

Degree of hydrolysis, mol %Kuraray Poval™ 4-88

488

Kuraray Poval™ 22-88

2288

Kuraray Poval™ 49-88

4988

Elvanol™ 90-50

1599

Elvanol™ 71-30

2899

Kuraray Poval™ 200-88 KX

20088

310

Adding value toyour products –worldwide
Kuraray Poval™, Exceval™, Elvanol™ and Mowiflex™ are the trademarks for polyvinyl alcohols
made by Kuraray. Their key characteristics — outstanding film-forming properties and high binding strength — add real value to your products. Our polymers are water-soluble, highly reactive,crosslinkable and foamable. They have high pigment binding capacity, protective colloid characteristics and thickening effects. The physical and chemical properties of Kuraray Poval™ makeit ideal for a wide variety of applications, ranging from adhesives through paper and ceramics
to packaging films. Many of our polymers are food contact-approved and thus suitable for foodapplications. Ecologically Kuraray Poval™ is advantageous due to its biodegradability and the factthat combustion does not generate residues. It is available in various particle sizes from granules
to fine powders.
Kuraray produces its wide range of Kuraray Poval™ grades in Japan, Singapore, Germany and theUSA. Kuraray’s global production and service network make us your partner of choice for innovative high-quality PVOH resins.
Kuraray – Here to Innovate.

Headquarters
Kuraray Co., Ltd.
Tokiwabashi Tower
2-6-4, Otemachi
Chiyoda-ku
Tokyo, Japan 100-0004
Phone: +81 3 67 01 1000
infopoval.jp@kuraray.com

Kuraray Poval™
product portfolio
Please contact your local
Kuraray office to discuss theright Kuraray product foryour needs.

Kuraray America, Inc.
2625 Bay Area Blvd.,
Suite 600 Houston, TX77058
United States of America
Phone: +1 800 423 9762

Kuraray Asia Pacific Pte., Ltd.
250 North Bridge Road
#10-01/02 Raffles City Tower
Singapore 179101
Phone: +65 6337 4123

info.kuraray-poval@kuraray.com

infopoval.sg@kuraray.com

Kuraray Europe GmbH
Philipp-Reis-Str. 465795 Hattersheim am Main,
Germany
Phone: +49 69 305 85 351

Kuraray China Co., Ltd.
Unit 2207, 2 Grand Gateway
3 Hongqiao Road, Xuhui District,
Shanghai 200030, China
Phone: +86 21 6119 8111

info.eu-poval@kuraray.com

infopoval.cn@kuraray.com

03_2022