September 2, 2020

Introducing the Thin-film High-heat Insulation
Material “FinesulightTM”

Sumitomo Riko Company Limited (Headquarters: Nakamura-ku, Nagoya-shi; President &CEO: Kazushi Shimizu) is pleased to announce the development and commercialization ofFinesulightTM, a thin-film high-heat insulation material, coated with a high-thermal
insulation filler.

Finesulight™ Thin-film High-heat Insulation Material (Sheet-type)Utilizing our core competence, polymer materials technology, we made a high-heat
insulating filler (silica aerogel) containing nanopores small enough to block the passage ofair, into a coating liquid. Then, by coating base materials such as non-woven fabric and1/4

molded resin, we developed a thin, flexible insulating material which exhibits high-heat
insulation properties at a level of still air or higher.
Of the three methods of heat transfer, convection, conduction, and radiation, Sumitomo
Riko focused on conduction. Silica aerogel has the lowest heat transfer rate of solid
substances. Its internal pores are spatially positioned so that air cannot move and, because
there is no air convection, thermal conduction is suppressed. We have processed silica
aerogel into a minutely crushed insulating filler. Our polymer materials technology has
made coating possible, while maintaining a high filler density level, achieving a thermal
conductivity of 0.020 W/mK, which is less than the still-air thermal conductivity of 0.026
W/mK as a coating film.
We have now begun supplying Finesulight™ coated onto non-woven fabric sheets. It canbe installed in narrow gaps and spaces and, due to its light weight, it is perfect forautomobiles, Sumitomo Riko’s core business, and can also be used for a broad range ofinsulation applications, including electrical appliances, residences and cooler boxes that
require heat management. Furthermore, as it can be used on various base materials otherthan non-woven fabric, we are continuing to develop Finesulight™ for other products.
Through our technology and product development in the heat management field, theSumitomo Riko Group helps to make life more comfortable while improving energy
efficiency.

＜Structure of the Insulating Filler＞

Air molecules
Silica particles
Insulating filler (silica aerogel)

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＜Properties of the Insulation Sheet＞

Thermal conductivity of various materials
Polypropylene (PP) resin
Glass wool
Urethane foam
Still airFinesulightTM

Thermal conductivity (W/mK)

Temperature rise evaluation by material(Heater temperature 80℃)

After 3 minutes

Thermography measurement

Heater 80℃
Urethane foam
PP resin

Thickness of all materials 2 mm

FinesulightTM

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<Insulating material that can be applied to various base materials＞

Left： Minutely crushed insulating filler mixed
with water to make a coating liquid
Top Right： Lamination with aluminum
deposited film (insulation sheet)
Bottom Right： Coated molded resin(insulation duct)＜Product Inquiries＞
New Business Products Development Department, Advanced Systems R&D Center,
Sumitomo Riko Company Limited(1, Higashi 3-chome, Komaki-shi, Aichi 485-8550)
Email：finesulight@jp.sumitomoriko.com

Contact Information

Sumitomo Riko Company Limited
Public Relations and Investor Relations Department
JP Tower Nagoya 1-1-1, Meieki, Nakamura-ku, Nagoya-shi, Aichi 450-6316, Japantel +81-52-571-0259 e-mail product.info@jp.sumitomoriko.com
https://www.sumitomoriko.co.jp/english/

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