to food loss reduction.”In response to this situation, Toyo Seikan developed a metal cup con-tainer in 2021. In addition to its high recyclability, the container has the advantages of being cooler than con-tainers made of plastic or paper mate-rials, lighter and stronger, and can be used repeatedly throughout the day if washed with water. It is being test-mar-keted at various sports and event ven-ues.The company also proposes an alternative plastic container that com-bines an aluminum body container and a plastic cap that can be opened and closed with a single touch. It has fea-tures such as a luxurious appearance due to the printing, light shielding and excellent moisture resistance, as ro-bust as plastic bottles, and the body container and cap can be separated. It is suitable for supplements, season-ings and spices, confectionery such as gum and gummies, tablets, and granu-lated and powdered contents.The company is also developing an aluminum container that combines the main container with threaded parts. Plastic triggers, dispensers, sprayers, and pumps can be combined, and the threading system allows for easy separation. The main container is a Drawing and Ironing (DI) can, which is lighter than the typical rolled alumi-num impact can. CO2 emissions from aluminum production are also low at 4.09 kg-CO2/kg, less than half that of impact cans.He also introduced Compression Bottom Reform (CBR) as a NEW tech-nology. It achieves higher bottom pres-sure resistance than existing can man-ufacturing technology, and achieves both high quality and weight reduction. “By combining this CBR with aTULC (Aluminum Toyo Ultimate Can), which uses a hybrid material of aluminum and PE resin to minimize water and energy consumption, it is possible to provide more environmentally friendly packag-ing containers. It’s getting attention all over the world,” he said.Biomass resin using rice that can be secured stablyEiji Fukushima of Biomass Resin Hold-ings Co., Ltd. presented their rice-based biomass plastic un-der the theme “Re-Design-ing Agriculture and the Environment.”“The Japanese government has declared that it will use 1.97 million tonnes of biomass plastic by 2030. But how will it ensure a stable sup-ply? Corns and sugarcanes are con-sidered strategic crops for bioethanol extraction in many countries, and Ja-pan imports just under 50,000 tonnes a year. It is rice that can be secured in a stable and quantifiable manner do-mestically,” Fukushima says.Rice is harvested in stable and fixed quantities every year, and there is always rice that is not fit for human consumption, such as rice scraps, crushed rice, and even rice damaged by typhoons and other disasters, as well as accidental rice caused by mold. The Ministry of Agriculture, Forestry, and Fisheries (MAFF) launched a new program in 2018 and is working to re-duce old and used rice, but most of it is discarded.The company realized that rice cakes made from rice have the same characteristics as thermoplastics: they soften when warmed and harden when cooled, and that rice has been used as a glue because of the alpha-formation of starch contained in rice. Single-use cutlery such as spoons and forks were launched at the end of February 2022. The resin is being increasingly adopt-ed as an upcycled resin made from rice that is unsuitable for human consump-tion. The product is as strong as con-ventional plastic products, has a heat resistance temperature of 120℃, and has acquired the Biomass Mark 25, which indicates 25% rice resin con-tent, reducing CO2 emissions by 25% compared to when petrochemical-de-rived resin is used. Other applications include toys, plastic bags, garbage bags, clear files, and ballpoint pens. Some of these products have a high content of 51% rice resin.Source: Presentation materials for the 85th Symposium of the Society of Packaging Science & Technology, JAPANHighly recyclable metal cup container26
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