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Dirty diapers born again in Japan recycling breakthrough

Unicharm pilots diaper pulp recycling in two municipalities with 80% waste recycling rates and aims to expand to 20 municipalities by 2035.

  • Unicharm is testing a world-first diaper recycling pilot in the southern Japanese municipalities of Shibushi and Osaki, which began in 2024 and requires residents to label designated bin bags.
  • Japan's aging population uses more diapers for seniors than babies, and Unicharm president Takahisa Takahara noted growing demand includes pet diapers, prompting action to address landfill pressures.
  • The recycling process involves ozone sterilization, shredding, and separating materials into pulp, plastic, and super-absorbent polymer , enabling Shibushi and Osaki to recycle 80 percent of household waste—four times the Japanese average.
  • Unicharm converts recovered pulp into goods with less rigorous sanitary requirements, such as toilet paper, though recycled products are priced around 10 percent higher than items made from fresh raw materials.
  • By 2028, Unicharm aims to recycle used diapers into new ones, while the Japanese government targets 100 municipalities by 2030 and the company targets 20 municipalities by 2035.
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Dirty diapers born again in Japan recycling breakthrough

Billions of dirty diapers end up buried or burned every year in Japan -- more from seniors than babies -- but a recycling breakthrough has given them a new lease of life, one hot mess at a time.

·Missoula, United States
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KULR-TV broke the news in Billings, United States on Wednesday, March 25, 2026.
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