... , Sewing the bottom, then covering & sealing with heat-melt adhesive tape. 1. Machine function and process flow1) Machine function: Automatically ... , Sewing the bottom, then covering & sealing with heat-melt adhesive tape.2) Process flow: > Feeding the paper-plastic tube automatically ... sealer, cover the sewing thread by heated adhesive tape, then press the tape to make it well stuck to the bottom ...