Toray Industries Inc showed the "Picasus" metallic film at Toray Advanced Materials Symposium 2016, a private show that took place Oct 6, 2016, in Tokyo.
The company aims to have the film employed for automotive tail lamps. It gives a sense of high quality with its metallic luster at normal times. But, when the lamps are turned on at night, light passes through the film and illuminates surrounding objects.
The film is made by staking 1,000 layers of polyester resins with different refractivities but has a thickness of only 0.1mm. For the film, Toray Industries used its lamination technique for thin materials.
The Picasus has already been commercialized for automotive interiors including interior lights but has not been employed for automotive tail lamps yet. The film can transmit and reflect light at the same time. Therefore, when LED light is applied to the back side of the film, it glows in a characteristic way.
Because the Picasus is a film, it can be integrated with other parts, shortening processing time. Also, the film enables to reduce the number of LED lamps and save energy. It does not contain any heavy metals and is environmentally friendly.
On the other hand, it is difficult to form the Picasus in a complicated shape because it is a film. And the use of the special film increases the costs of lamps.
"Unlike metals, the Picasus does not rust," Toray said. "So, it has advantages in terms of total cost if repair and replacement are taken into consideration."