Japan's Ministry of Economy, Trade and Industry estimates that the market of storage batteries in the world will grow from US$64 billion in 2011 to US$250 billion in 2020.
The Japanese government aims for 50% share in this market.
Especially in Japan impact of 3.11 is still enormous.
Many people tend to prepare storage batteries in case of emergency.
Also nuclear power plants are getting closed and the industry faces possibility of electricity shortage.
More and more storage batteries are being introduced in factories, hospitals, public buildings and homes.
The Japanese government supports both development and purchase of storage batteries.
Below is one of tips to help production of battery materials and plastic films in roll to roll process.
This roll is made by a shaft and thin metal roll. Air is between this shaft and metal roll.
Inner air pressure can be controlled in the range of 0.3MPa.
Air roll diameter in this picture is 260mm.
