In paper cup: foodservice paperboard is turned into reels, the reels are printed and cut into carefully measured cup sidewall blanks. The blanks are inserted into cup-forming machines that wrap the blanks into a cup shape and add the bottom. The seams of the cups are heated in order to make the cups liquid-proof.
- The first stage – mainly finishes the transmission of the paper cup’s sidewall paper, shaping the sidewall, and transferring it to the second stage after shaping.
- The second stage – transmission of the cup-bottom paper, shaping the cup bottom, joining the shaped side-wall and cup bottom, automatic transmission and discharging of the shaped cup, and curling the shaped cup’s edge.
- The third stage – mainly includes 45-degree angle separating, preheating, curling bottom, curling rim, and so on mechanisms, which are the important parts in finishing paper cups.