BZR-3 Woven Bag Heat Sealing, Top Folding & Stitching Machine

Bag Mouth Cleaning: The BZR-3 can include an optional bag-mouth cleaning stage before the main sealing process. This allows the bag opening to be prepared before the inner liner is heat sealed. Inner PE Liner Heat Sealing: The inner PE liner is heat sealed using four groups of heating blocks. PTFE sealing tape separates the heating elements from the bag surface to help prevent sticking during the heating process. Pressure Roller Processing: After heat sealing, the bag mouth passes through a pressure roller. This stage processes the sealed inner liner before the outer bag folding operation. Outer Bag Top Folding: The outer woven bag is then folded at the bag mouth. The BZR-3 catalogue identifies the folding configuration as a straight fold. This creates the required folded outer-bag edge for the subsequent stitching stage. Outer Bag Stitching: Following the folding operation, the outer bag is passed to the integrated sewing machine, where the folded outer bag is stitched. The BZR-3 uses a GS-9C sewing head according to the catalogue specifications. Integrated Control: The entire sequence is coordinated through the machine's control system. The catalogue describes heating monitoring, variable-frequency motor control, automatic alarm shutdown, fault indication, comprehensive protection and interlock shutdown functions.