DNP Uses Unique CVD Technology to Develop Transparent Film with High-Barrier Features for Industrial Uses

Dai Nippon Printing Co., Ltd. (DNP) has applied a uniquely developed Chemical Vapor Deposition (CVD1) technology in the development of a transparent film with high-barrier properties for industrial uses, including flexible organic photovoltaic (PV) cells and organic EL displays.

The film achieves a high-level water vapor barrier property, based on a moisture vapor transmission rate of 0.0004g per 1m2 per day. That puts the barrier properties on the 10-4 rate, or less than a tenth of the previously developed 0.005, 10-3 rate film. In addition, the newly developed film improves on both transparency and light transmission.


DNP commenced the mass production of transparent film with high-barrier properties in 1998, and has since broadly applied the film in a variety of uses, including food packaging and infusion solution bags.

At the same time, needs have existed for the use of such high-barrier film in place of glass, for such industrial uses as flexible organic PV cells and organic EL displays. To achieve this, however, requires special manufacturing devices and technology. Other challenges also presented themselves, such as high costs based on low productivity due primarily to the narrow film width which was only possible to produce. This time DNP has boosted productivity by capitalizing on the mass production technology developed in the creation of transparent barrier film, and has successfully developed a transparent film with high-barrier properties that maintain improved water vapor and oxygen barrier performance, higher transparency and light transmission features.

[New Product Outline]

  • The new product is equipped with high-barrier properties, including water vapor transmission rates less than 1/10 those of existing products. Suitable for use with products that require high-barrier properties and flexible organic PV cells and organic EL displays, where the use of glass is difficult.
  • As the newly developed product is highly transparent and virtually colorless, it is suitable for optical uses, such as displays.
  • Productivity has been improved, by applying existing transparent barrier film manufacturing facilities and mass production technologies.

[Looking Ahead]

DNP has positioned Knowledge and Communication, Food and Healthcare, Lifestyle and Mobility, and the Environment and Energy as business growth areas, and is engaged in the creation of new values. The Company aims for sales of 15.0 billion yen per year in 2020 by focusing on the sales promotion of transparent film with high-barrier properties for industrial use.

* Chemical Vapor Deposition : A thin film coating technology. A chemical reaction is initiated, under vacuum conditions, in the gas that is the raw material of the film, and a thin coating formed on the surface of the film. Thin film manufactured under CVD exhibits few signs of deterioration due to stretching or bending. DNP led the world in adopting this technology for food packaging uses.
* Product prices, specification and service contents mentioned in this news release are current as of the date of publication. They may be changed at any time without notice.