One-Two-One
Impurities such as metals, rubbers and plastics must be removed during the glass sorting process which consumes huge amounts of electricity and manpower. And food container is the one needs to be sorted from other materials the most, because they consist of at least two different materials to make glass be sealed to keep food fresh. My design does not use any other materials except glass to form a confined space suitable for food storage. Using single material saves energy by reducing manufacturing steps and reduces the energy consumed during the glass sorting process.
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