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BUMP SLEEVE is a self-sleeve function on takeaway cup.
This design reduces a amount of heat to transfer to hands from hot coffee cup by minimizing contacted surface.
It doesn't use disposable paper cup sleeve.
BUMP SLEEVE can slove environmental pollution problem to cause CO2 during production of disposable cup sleeve and to create garbage after use disposable cup sleeve.
Dongseo university
Gimhae-si, South Korea
Soobin Lee,
Dongseo university