Fully automatic manufacturing machinery for FIBC, bulk jumbo sacks, bag-in-box liners and industrial flexitanks integrates film unwinding, servo deviation correction, precision heat sealing, one-step forming, hole punching and finished bag stacking into one continuous production flow. Constructed with sturdy industrial frames and intelligent PLC touchscreen operation, all devices support flexible customization for multi-layer aluminum foil composite film, PE liner and thick woven fabric materials, creating firm leak-free sealing joints while cutting material loss. Matched heavy-duty sewing gear delivers reinforced stitching for FIBC lifting loops and thick bag seams, forming full turnkey production systems for liquid packaging liners and dry bulk shipping sacks. Applied extensively in food, chemical, logistics and bulk cargo industries, the equipment features fast operation speed, low labor consumption and uniform finished bag quality. Adjustable bag dimensions and sealing strength fully meet varied industrial packaging requirements for secure long-distance storage and transportation.