The Inescapable Problem of the 1960s
When Japanese manufacturers, led by Maruo Clothing (later BIG JOHN), started producing the first domestic jeans in the 1960s, they faced a singular, debilitating problem: reliance on imports.
Japanese companies had successfully imported American fabric from mills like Canton and produced brands like CANTON. These were the first jeans made in Japan (1965), but they were always dependent on the quality and price set by the West. This dependency sparked a powerful, driving ambition: to not just imitate, but to achieve industrial independence by creating denim fabric that surpassed the quality of the imports.
The Pure Domestic Declaration: The Number 8
The Legend of KD-8 (1972–1973)
The turning point arrived with two simple letters and one powerful number. In 1972, Kurashiki Spinning (Kurabo) achieved a historic breakthrough, successfully developing the first truly viable domestically produced denim fabric, named KD-8. Sales of the KD-8 fabric began in 1973.
Why was it named KD-8? Because the “8” signifies the eighth major prototype attempt before Kurabo’s engineers were finally satisfied with the result. In the world of textiles, where efficiency is king, dedicating resources to seven “failures” is commercially insane. But for the Japanese spirit of Monozukuri (craftsmanship), it was the only way.
The number 8 stands as a silent testament to a singular philosophy: Prioritize absolute, uncompromising perfection over cost or efficiency.
Note: The earliest KD-8 runs were woven on wide looms (non-selvedge), underscoring that the initial focus was on achieving fabric quality and domestic independence first.
Independence Achieved (1973)
In 1973, the mission was complete. BIG JOHN used the perfected KD-8 to produce the first mass-market “Pure Made-in-Japan” jeans. This “Pure Domestic” status meant every component—including the KD-8 fabric, cotton thread, and rivets—was sourced and manufactured domestically.
This was more than a product launch; it was a Declaration of Industrial Independence. Japan proved it could not only match the quality of the West but govern its own material fate.
The Epic Reversal: Saving the Soul of American Denim
It’s important to remember that Japan did not “invent” selvedge in the ’70s; rather, they re-engineered older shuttle looms and revived the craft toward the late ’70s and early ’80s.
As Japan was celebrating its independence, America was quietly discarding its heritage. Beginning in the late 1970s, the vast majority of U.S. mills abandoned their noisy, slow shuttle looms in favor of high-speed projectile (e.g., Sulzer) and rapier looms to maximize speed and profit, greatly reducing selvedge denim production in the U.S.
Note on exceptions: While most mills transitioned, Cone Mills’ White Oak factory continued to produce selvedge denim on shuttle looms until its closure in 2017.
What America discarded as “obsolete junk,” Japan recognized as a “cultural treasure.”
Fueled by the uncompromising quality standard established by KD-8, BIG JOHN spearheaded the ultimate act of restoration. In 1980, they released the BIG JOHN RARE JEANS, one of the earliest Japanese-made selvedge jeans.
This product was priced at ¥18,000 at launch—a bold statement that Japan took the abandoned technology of the West, perfected it through decades of Monozukuri, and resurrected it as a premium product, laying the foundation for the “aging denim” culture (sodateru jeans).
The price of Japanese denim reflects the cost of seven failed prototypes, the noise of a century-old shuttle loom, and the unwavering belief that quality must always precede efficiency. This is the foundation of the Japan Denim standard.