Teijin Frontier Co., Ltd., announced the launch of Thermofront, a new master brand for sheet insulation that combines environmental responsibility with high thermal performance. The new insulation is comprised of more than 70% EcoPET, Teijin Frontier’s recycled polyester fiber, and incorporates hollow cross-sectional fibers and functional raw materials to deliver outstanding warmth. Thermofront insulation is designed for a wide range of applications, from sports and outdoor wear to casual apparel.

In the first phase of this product rollout, Teijin Frontier is introducing three sub-brands: Thermofront OA, Thermofront SL and Thermofront BE. Each offers distinct value-added features such as bulkiness, lightweight comfort and moisture control. The brands are marketed for outdoor, sports and casual wear for the Autumn/Winter 2026 season.

In recent years, as people increasingly enjoy outdoor activities and sports in their daily lives, diversified lifestyles have driven demand for insulated outerwear and sportswear that offers not only warmth and light weight but also bulkiness, softness and comfort across various settings. At the same time, growing environmental awareness among consumers has increased the need for sustainable products. In response, Teijin Frontier developed Thermofront high-performance sheet insulation by integrating its expertise in nonwoven fabric design and processing technologies with its long-standing recycling capabilities.

All products under the new Thermofront insulation brand share key attributes that emphasize performance and sustainability. They demonstrate environmental responsibility by using EcoPET recycled polyester fiber, which makes up more than 70% of the material and significantly improves the sustainability of the insulation. The enhanced insulation performance comes from hollow cross-sectional staple fibers that provide superior thermal insulation compared to conventional polyester sheet insulation. In addition, the functionality of the combined fibers is maximized through Teijin Frontier’s proprietary nonwoven fabric design and sheet processing technologies.

Thermofront OA uses Octair, Teijin Frontier’s hollow, 8-fin cross-sectional staple fiber, to deliver excellent bulkiness and lightweight comfort. Moreover, combining it with EcoPET staple fiber and sheeted at optimal density enables it to maintain thermal performance over time. Thermofront OA is made entirely from recycled polyester.

Thermofront SL combines Teijin Frontier’s Solotex, a polytrimethylene terephthalate (PTT) fiber with a spring-like molecular structure, and Aerocapsule γ ECO, a three-hole hollow polyester fiber 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 Bemberg (a regenerated cellulose cupro fiber and a registered trademark of Asahi Kasei Corporation) 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 reaches 97%.

Production of these three materials will begin in Japan and China, with plans to expand manufacturing to Vietnam and Europe. Teijin Frontier aims to sell 300,000 meters of Thermofront products in fiscal 2025 and 1 million meters by fiscal 2028.