"Treeloop Thermal™," a thermal paper from OSAKA SEALING PRINTING CO., LTD., Ltd., a member of the OSP Group, has been adopted for product labels of bento boxes and rice dishes by Seven-Eleven Japan Co., Ltd.
SEJ will be conducting a "label demonstration test" using "Treeloop Thermal™" at approximately 300 stores in Chiba Prefecture starting November 3rd, 2026 (Tuesday), on a selection of about 15 bento box products. "Treeloop Thermal™" is an environmentally friendly thermal paper that does not use bisphenol A and bisphenol S as color developers, but instead uses biomass-derived color developers. The thermal material parts other than the paper used in these labels have been replaced with 10-20% naturally derived materials.
SEJ has been working to reduce its environmental impact, including the use of "Treeloop Thermal™" labels, and in response to concerns about rising energy and material prices due to global circumstances, by utilizing paper materials, reducing the weight of containers, and commercializing containers made from recycled materials. Moving forward, we will continue to contribute to the realization of a sustainable society by reducing environmental impact and promoting resource recycling.
Products: Selected bento box items, such as "Nori Bento" (approximately 15 items)
Sales area: Chiba City (around JR Chiba Station) and approximately 300 stores in Narita City.
Sales period: November 3rd to December 7th (approximately 1 month)
The color developers used in thermal paper are generally derived from petroleum. This product is an environmentally friendly product that replaces some of these color developers with lignin-based color developers made from kraft lignin. Kraft lignin is a component found in the black liquor (dark brown waste liquid) generated when pulp is extracted from wood. By utilizing this waste liquid as a raw material, we have achieved upcycling and reduced environmental impact by decreasing the use of petroleum-derived color developers. Furthermore, this product does not use bisphenol A, which is prohibited by overseas regulations, or bisphenol S, which has usage restrictions, as color developers. Since its launch in May of this year, its natural colors, while being environmentally conscious, have been well-received as added value.
Base material: Made with sustainably sourced paper. The thermal materials do not contain BPA or BPS colorants.
OSP Group's Environmental Initiatives
In today's world, where environmental protection is a major concern, there is growing interest in and need for reducing CO2 emissions, eliminating plastics, and decreasing the use of petroleum-derived raw materials. The OSP Group is committed to environmentally conscious development from the perspective of SDGs and other factors, in order to meet the needs of the times in response to societal changes. This latest product is part of that effort.