... hands from hurting by hot drinks, we make a sleeve(out coat/jacket)over the inner cup/bowl ... paper-feeding, sealing , trouble alarming and counting. Double wall paper cups have two layers(walls), the ... forming machine, 2.to make the out jacket, use the Double Wall Machine . To make the hollow style, ... like the inner white-cup's bottom double wall machine,double wall forming machine,paper cup machineMain ...