The first step is extrusion, where to a mix virgin PP resin, UV Master Batch, Calcium carbonate, and colour pigment, is melted and shaped into tapes in an Extrusion machine. The tensile durability of the tapes is checked during this processing.
The bobbins of tapes formed in above stage are loaded onto weaving looms which can be Circular Looms, or Flat looms depending on users’ requirements.
3- Lamination / Coating (Optional)
Depending on the requirements of a customer, the weaved fabric may be laminated to create a layer for moisture barrier.
The PP woven fabric is putted on an automatic cutting machine then automatically cut into sheets, ready for printing or sewing stages.
The Fabric sheets are put into the printing machine then are printed with logo or brandname with specific pantone colors as the requirements.
The loops of the bags are made of more massive tapes of polypropylene or monofilament. The webbing is cut into a specific sizes and stitched to the bags, in any colors.
All the parts of bags like fabric cut panels, webbings, spouts, duffle/skirt are brought together and stitched by qualified and skillful sewing workers to give shape to each bulk bag.
QC/technicans with long experience are involved in the quality checking of the bags. Each bag is thoroughly inspected ensuring that it is safe to use.
9- Cyclic Top Lift Test
Some bags randomly selected for Cyclic top lift test. It ensures that the safe working load criteria of the bag are met.
10- Packing / Palletizing/ Storage
After inspection, the bags are folded and placed inside a bale press machine and packed on bales or wooden pallets which are ready for shipping.