Teijin Frontier is launching a new range of sheet insulation products for high thermal performance, branded Thermofront, and based substantially on recycled polyester.

Three sub-brands – Thermofront OA, SL and BE – offer distinct value-added features such as bulkiness, lightweight comfort and moisture control.

Thermofront OA is based on Octair, the hollow, eight-fin cross-sectional staple fibre, to deliver excellent bulkiness and lightweight comfort. Combining it with Ecopet staple fibres and sheeting at optimal density enables thermal performance to be maintained over time. Thermofront OA is made entirely from recycled polyester.

Thermofront SL combines Solotex, a polytrimethylene terephthalate (PTT) fibre with a spring-like molecular structure, and Aerocapsule γ Eco, a three-hole hollow polyester fibre with a spiral shape. This blend offers a soft texture, good shape recovery and superior warmth, ensuring comfortable wear.

Thermofront BE features a nonwoven fabric made from Asahi Kasei’s Bemberg regenerated cellulose cupro fibre and Aerocapsule γ Eco. The moisture absorption and desorption properties of Bemberg, along with its moisture control capabilities, help prevent discomfort from sweating. The combined use of recycled polyester and regenerated cellulose in this combination is 97%.

Production of these three materials will begin in Japan and China, with plans to expand manufacturing to Vietnam and Europe. The three sub-brands will be marketed for outdoor, sports and casual wear for the Autumn/Winter 2026 season and the company aims to sell 300,000 metres of Thermofront products in fiscal 2025 and one million metres in 2028.

www.teijin.co.jp