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2026.05.19 Environmental Research & Technology — Ito En and Heart Jointly Develop "Envelopes Containing Barley Tea Grounds" by Upcycling Barley Tea Grounds — An Eco-Conscious Product Contributing to Reduced Paper Material Usage —
Ito En and Heart turn barley-tea brewing waste into lighter, paper-saving envelopes, launching June 1 under Ito En's tea-grounds recycling system.
2026.05.19環境研究･技術伊藤園とハート、むぎ茶殻をアップサイクルした「むぎ茶殻入り封筒」を共同開発― 紙原料使用量の削減に貢献する環境配慮型製品 ―
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About this article
The numbers
Paper pulp reduction (long format envelope): ~8.8 kg
Paper pulp reduction (large format envelope): ~42.3 kg
Weight reduction per 1,000-unit case (long format): 880g
Weight reduction per 500-unit case (large format): ~2kg
What they said
“The "barley-tea-grounds envelope" maintains the same opacity (resistance to show-through) as a standard envelope while reducing paper pulp use and lightening its weight.”
「むぎ茶殻入り封筒」は通常の封筒と同等の不透明度（透けにくさ）を保ちながら、紙パルプ使用量を削減して軽量化しています。
“Tea-grounds output for fiscal 2024 reached roughly 59,000 tons, and as barley-tea beverage demand has risen in recent years, making use of barley-tea grounds has become an important theme.”
2024年度の茶殻排出量は約59,000トンにのぼっており、近年はむぎ茶飲料の需要増加に伴ってむぎ茶殻の活用も重要なテーマとなっています。
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