As the first step in our collaboration with Mitsui Chemicals, we have jointly developed a new window film that focuses on emotions.

Mitsui Chemicals, Inc. (Head office: MINATO CITY, Tokyo; President and Chief Executive Ofcer: Hashimoto Osamu) and our company have begun a collaboration to combine Mitsui Chemicals' cutting-edge technology with Tanseisha's spatial creation know-how and promote joint development with a focus on sensibility, with the aim of providing richer spatial experiences.
As the first step, Mitsui Chemicals has developed "Posica™ Film" that will change the world into a more beautiful place, using the "Kuukiri™ Dye" technology that was developed in the pursuit of better visibility in the field of eyeglass lens materials. By sticking Posica™ Film to windows, showcases, etc., scenery and exhibits will appear more vivid than ever before.

The two companies will expand Posica™ film to a wide range of spaces, including commercial facilities such as hotels and restaurants that value scenery and experiences, exhibition facilities such as museums, amusement facilities such as sports spectator facilities and aquariums, and office spaces. They also aim to develop a variety of solutions, including Posica™ film, that focus on the sensibility that leads to improving the value of a space, and to generate new business.

News Release

Mitsui Chemicals and Tanseisha collaborate on first project: joint development of new window film with a focus on aesthetics
- Providing a richer spatial experience with Posica™ film using Mitsui Chemicals' Kukkiri™ dyes -

Comments from each company regarding the collaboration

＜Shingo Shibata, Managing Executive Officer and Head of Research and Development Division, Mitsui Chemicals＞
The Mitsui Chemicals Group has many materials and technologies, but going forward, it will be important not only to pursue functional value, but also to propose how these can contribute to providing people with a better life and lifestyle. This time, through collaboration with Tanseisha, which has a high level of know-how in creating spaces, we have been able to elevate our specific wavelength-cutting technology to emotional value. Starting with this Posica™ film, we hope to produce many examples of this scheme, where research and development can be quickly linked to business development.

<Norihiro Suganami, Director of Planning Department, Planning and Development Center, Tanseisha>
As communication via the internet increases through the use of social media such as image and video posting, web conferencing, and other means, there is a demand for experiences at facilities that offer higher added value than ever before. By combining the power of Mitsui Chemicals' cutting-edge chemistry and materials with Tanseisha's know-how in creating "spaces that move the heart," and re-examining this from the perspective of emotional value, we believe that this will lead to the creation of new experiential value that appeals to the five senses of users. We are currently working on projects using multiple materials other than Posica™ film, so we hope you will look forward to future collaborations between our two companies.

What is Posica™ film?

This polyester-based window film uses Mitsui Chemicals' "Kukkiri™ Dye" technology to make the scenery seen through the film appear natural yet colorful.
When Posica™ film is applied to a window, the colors of the blue sky, the sea, the green trees, the red flowers, etc. appear deeper and more vivid, and the white of the clouds floating in the blue sky appears whiter. The brand name embodies our hope that by looking at the world through Posica™ film, people will become brighter and more positive.
Posica™ film will be sold by Mitsui Chemicals' wholly owned subsidiary, Mitsui Chemicals Fine Co., Ltd., from September 2021.

Four features of Posica™ film

Future developments

Currently, it is used in the windows of resort hotels and bridal facilities, museum showcases, store and commercial facility display windows, and offices.
We expect to expand this technology to window glass, lighting, etc. We have also begun demonstration experiments by introducing the technology to facilities that have shown interest.

Why does Posica™ film make the world look more beautiful?

Posica™ film using the "Kukkiri™ dye" selectively blocks a specific percentage of yellow light (Figure 1).
As a result, the color of the object seen through the Posica™ film becomes more saturated, appears deeper and more vivid, and the white color appears whiter without any yellowish tint (Figure 2).

(Edited by Keiji Uchikawa, Professor Emeritus at Tokyo Institute of Technology and Visiting Researcher at the Kanagawa Institute of Technology Human Media Research Center)