Nakamoto Packs started operating a new coating line at its Saitama plant at the end of September, giving the packaging and functional-film maker a tool to pursue battery materials. The company installed the machine in May 2026 and renamed it the PD coater, short for Process Development Coater, to signal process work aimed at mass production rather than research.
What the line can do
The PD coater sits between the company's small multi-coater and a mass-production coater. It handles substrates 100 to 400 millimetres wide at 1 to 20 metres a minute, supports intermittent coating, and dries at up to 140°C. Minimum coating-material use is 2 kilograms.
Nakamoto Packs lists secondary batteries as the first target: all-solid-state, lithium-ion and sodium-ion cells, and functional coatings for battery components. It also names semiconductor and electronic materials, decarbonisation materials, and medical and healthcare materials. Its stated goals are to become the leading contract processor of functional materials and to reach ¥10bn in next-generation battery sales.
Ambition versus the order book
The battery business is still small. The deck describes secondary-battery sales in the first half as spot orders only, and the segment made up 0.5% of IT and industrial materials sales. Semiconductor-related products were 17.6%. The deck gives no customer qualification or contracted battery orders, and the ¥10bn target carries no date in the text.
The half-year numbers
For the first half of the year to February 2027, sales rose 12.3% to ¥28.07bn and operating profit rose 52.4% to ¥2.45bn, both records. IT and industrial materials sales were ¥5.23bn, up from ¥4.62bn, helped by smartphone and semiconductor demand. The full-year plan shown is the one disclosed on 14 September: sales of ¥55bn and operating profit of ¥3.87bn.
The company corrected page 7 of the deck, the sales and operating-profit bridges, later the same day, and apologised for the error. The figures above match the unchanged summary pages.