The World’s First Polyurethane Roll Helped to Spread the Yamauchi Name
In 1963, we became the first in the world to successfully develop a polyurethane roll for use in papermaking equipment. The revolutionary High Top Roll offers dramatically improved performance and durability, and has made Yamauchi a household name among paper producers throughout the world. Since then, we have been expanding our product line and developing various products to respond to the trend toward high-speed, large-scale and high-quality production.
What Makes Our Polyurethane Rolls Special?
Long-Life Design with Significantly Improved Abrasion Resistance and Pressure Resistance
Thanks to polyurethane’s high resistance to abrasion, pressure and chemicals, High Top Roll has stable physical properties, such as shape and hardness, over a long period of time. The double-structure, with a polyurethane layer and a base layer, also improves the strength of adhesion to the shell. As a result, High Top Roll offers a long life unmatched by any other product. Used as a suction roll in the press part and as an applicator roll in the size part, High Top Roll offers high performance and excellent reliability that have achieved high evaluation in the world.
A Full Lineup of Products Made of Optimal Materials Selected According to Operating Conditions
The advancement of paper manufacturing technologies is leading to high-speed, large-scale, high-quality paper production. We offer High Top series for use in the press section, Taflite and Quaty series for use in critical conditions and High Top SD Series for use in the film coater. All of these products offer high reliability backed by Yamauchi’s expertise, and they find wide application in the industry.
High Top Series
Material name | Hardness | Main applications | |
JIS A | P&J | ||
HT870 | 87 | 25 | Suction roll Applicator roll Yankee touch roll |
HT900 | 90 | 20 | Suction roll Applicator roll Yankee touch roll |
HT920 | 92 | 17 | Suction roll Applicator roll Yankee touch roll |
HT950 | 95 | 13 | Grooved roll Suction roll Applicator roll |
HT990 | 99 | 7 | Grooved roll Suction roll |
High Top SD Series
Material name | Hardness | Main applications | |
JIS A | P&J | ||
HT820SD | 82 | 35 | Applicator roll Smoother roll |
HT840SD | 84 | 30 | |
HT870SD | 87 | 25 | |
HT900SD | 90 | 20 | |
HT920SD | 92 | 17 | |
HT950SD | 95 | 13 |
Taflite D74 / Quaty
Material name | Hardness | Main applications |
Taflite D74 | shoreD74 | Grooved roll |
Quaty | shoreD80 |