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We used a metal plate with a white polyester film thermally adhered to as the material for the cap. By utilizing the property of the polyester film to adhere directly to the sealing compound, we have significantly reduced the number of process steps from the previous six steps in the painting process to two steps. As a result, we achieved a reduction of approximately 65% in GHG emissions generated during the painting process*.
* This calculation is based on the annual electricity and gas consumption for printing and painting twist-off cap products, and the total reduction effect over the product's life cycle is approximately 4.1%.
By using polyester film, the scratch resistance of the cap was improved compared to conventional painted products. This reduces the risk of rust formation. Furthermore, the leaching of organic compounds is minimized, and the absorption of flavor components is suppressed, allowing for the long-term preservation of the deliciousness of the contents.
