Company history

In June 1889 notables of the town of Amagasaki, joined by Osaka financiers they had talked into subscribing, incorporated the Amagasaki Spinning Company with capital of ¥500,000. The site made commercial sense — Amagasaki, with neighbouring Naruo, was an old cotton-growing district, so the raw material was close at hand — but the promoters also had a local obligation in mind: work for the impoverished former samurai of the Sakurai house, lords of the old Amagasaki domain. Hirooka Shingoro is recorded as its first president. In November 1890 the mill started up with 6,528 spindles of British Platt machinery, and a red-brick two-storey works with a tall chimney rose over what had been a soy-sauce town. Japan still imported most of its yarn; a spinner built to replace those imports was, at that moment, at the front of the country’s industrialisation.

Renamed Amagasaki Boseki when the Commercial Code took effect in 1893, the company added woven cloth to yarn in 1909 and then grew by absorption — Tokyo Boseki in 1914, Nippon Boseki in 1916, Settsu Boseki in 1918 — until it held mills across the country and ranked among Japan’s big three spinners. In 1918 it took the name Dai Nippon Boseki to match its new breadth.

The decisive move came in 1926, and it set the company’s habit for the next century. Rather than carry rayon — a new material of unproven economics — on its own books, Dai Nippon Boseki put it into a 66%-owned subsidiary, Nippon Rayon, so that any losses would fall outside the cotton business. Wool spinning followed in 1933, giving the group three pillars in cotton, rayon and wool. It was a prudent piece of capital allocation. It also kept cotton and chemicals apart for forty-three years, long enough for each to grow its own management habits.

The war took the group’s large overseas assets and left its domestic mills wrecked. In April 1949 Hara Kichihei, until then a managing director, was carried into the presidency — the seventh — on broad support inside the company, and set about rebuilding. In October 1950 Dai Nippon Boseki began volume production of vinylon, Japan’s own synthetic fibre, on a first line at the Sakoshi works. Built on domestic technology from Professor Sakurada Ichiro’s group at Kyoto University, vinylon started from limestone and carbide — inputs Japan could buy at home. Against nylon and polyester, which had to be licensed from abroad, management chose the material that spent no foreign exchange. In an economy short of dollars, that was the sound reading of the constraint.

It was also the wrong reading of the market. Vinylon dyed poorly and felt wrong on the skin, and on the qualities that decide apparel fibres it could not match nylon or polyester; once those two settled in as the mainstream from the late 1950s, the growth case the company had built for vinylon simply never arrived. What vinylon did leave was a polymer-processing capability whose natural home was film and resin rather than clothing — the technical starting point for the business that would one day carry the group’s profits. On 26 April 1964, its seventy-fifth anniversary, Dai Nippon Boseki renamed itself Nichibo, announcing in its own name that it no longer meant to be only a spinner.

In October 1969 Nichibo and Nippon Rayon combined as equals to form Unitika. The new company had sales of $461.4M (¥166bn), second in the industry only to Toray. It also had 22,000 employees, which worked out at about ¥7.55m of sales per head against roughly ¥12.21m at Toray and ¥9.63m at Teijin. The gap was there on day one. Forty-three years apart had given the cotton side and the chemical side different practices and different ways of measuring things, and reunion did not dissolve the difference so much as bring it indoors: for years the two camps could not even compare capital-investment proposals on a common yardstick, and the cost of internal negotiation showed up long before any synergy did.

The integration plan also pushed capital into property, housing, resins and medical devices at once. A roughly ¥10bn asset-sale gain in fiscal 1971 flattered the numbers without fixing the business. Then the fibre slump hit: for the year to March 1975 Unitika reported a recurring loss of $61.9M (¥19bn) and closed three mills — Nagoya, Inuyama and Kiryu — alongside cuts in cotton and wool capacity, voluntary redundancies and temporary layoffs at head office. All three were former Nichibo cotton plants, first in line once the merger arguments subsided. A ¥24.9bn gain on sales of land and securities kept the company out of bankruptcy — the difference between Unitika and Kojin, which went down holding property inventory — but it was a weapon of unrealised gains, not a solution, and the recurring loss ran on until the return to profit in the year to March 1979.

From 1977 the main bank, Sanwa, formalised its involvement, installing a standing review of the business plan and of progress on earnings as a way of protecting its loans; in the same year the vinylon and rayon operations were spun out into separate companies and off the parent’s books. Loss-making lines were tidied up under the bank’s eye, but investment decisions now presupposed the bank’s agreement, and a long shadow fell over the company’s independence. It was inside that frame that Unitika committed, around 1980, to volume production of PET film, converting existing nylon-film lines and carrying its biaxial-orientation know-how across rather than building new — a cheap way into food packaging, a market that was growing while fibre was not. Medical devices followed in 1982 and activated carbon fibre in 1985.

Unitika went abroad late. Subsidiaries in Indonesia and Thailand in the 1990s were meant to secure low-cost production, but the company struggled to build distribution in those markets while a strong yen ate the margin on exports back home, and the contribution never reached what management had assumed. Set against Toray and Teijin, which built real scale in China and ASEAN over the same years, Unitika was both late and small. What the venture taught was less about Asia than about the trade itself: fibre had entered structural maturity, and no amount of cheaper labour would change that.

So the weight shifted. Through the late 1990s and early 2000s, products built on polymer technology — PET film, glass fibre, medical devices — took a rising share of sales, and Unitika settled into a two-pillar shape of fibre plus polymers. In 2009 it quit nylon filament and took 150 voluntary redundancies; from 2010 it sold its insurance, plant-engineering and property businesses one after another. Read together with the 1,600-job cut of 1983 and the absorption of four subsidiaries in 1989, a pattern is hard to miss: for more than fifty years, contraction in instalments was Unitika’s normal operating rhythm, and each instalment bought time without touching the divided structure underneath.

By 2014 the banks were reportedly asking Unitika to leave fibre altogether. Management deferred again: a third-party share allotment in July, the closure of the Saga plant announced in August, and a financial support package of about $354.3M (¥38bn) — the familiar shape of relief that compresses the loss without changing what causes it. Letting go of the founding trade was, plainly, hard to contemplate.

The arrangement held only while polymers earned enough to absorb fibre’s losses, and that margin evaporated. Polymer profit fell from about $89.2M (¥10bn) in the year to March 2017 to roughly ¥600m in the year to March 2024, with profitability sliding from fiscal 2021; raw-material and energy costs and higher freight squeezed 2022 and 2023 while price increases lagged. For the year to March 2024 Unitika posted its first operating loss since listing.

On 28 November 2024 the company applied to the Regional Economy Vitalization Corporation of Japan (REVIC) for turnaround support, asking its lenders for about $574.3M (¥87bn) in total financial assistance including roughly $283.8M (¥43bn) of debt forgiveness, and its board resigned en masse. Apparel and industrial fibres — some 40% of sales — are to be transferred by August 2025, with resources concentrated on the polymer businesses, PET film and glass fibre above all. After 135 years, the trade the company was founded on now continues under a buyer, Seiren, and its chairman Kawada Tatsuo.