Hashimoto Cloth Corporation advances biodegradable mask technology through university partnerships, aiming to reduce waste and improve long-term protective performance worldwide.
By Daniel de Bomford
Hashimoto Cloth Corporation, a Shiga-based producer of nonwoven materials, is advancing biodegradable filter technology through ongoing work with researchers at the University of Tokyo and Stanford. Two years ago, the company launched a mask made of 99% plant-derived materials using a PLA filter and expects to release a new “rechargeable mask” at the end of next year.
The initiative centers on a mask made almost entirely from plant-derived materials, designed to ease storage constraints and reduce long-term waste. Currently, masks can only be stored for five to seven years before being discarded, resulting in significant waste.
Engineers are developing a method to restore the electrostatic charge that allows filters to trap airborne particles. The Mask Charger would enable masks to be washed, recharged, and reused, helping hospitals and local governments reduce disposal volumes and lower procurement costs.
During the COVID-19 pandemic, critical facilities such as hospitals and nursing homes faced a severe shortage of masks, posing a serious threat to human lives. The Mask Charger ensures that masks can be stored and safely reused.
The company is now testing its third prototype with support from NEDO, Japan’s national R&D agency and plans to move into production once final evaluations are complete.
To hear more from President Tatsuki Hashimoto of Hashimoto Cloth, check out this interview with him.
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