Step 1: Create pulling plastic beads only
PP plastic granules are loaded into the hopper of the fiber forming device and then fed into the extruder by the melting and suction machine. The liquid plastic extrusion screw to the mold mouth has length and thickness adjusted as required.
At that time, the plastic film is shaped through the cold water concrete shape and then into the knife shaft to cut into each fiber with the required width. Next, the yarn goes through the heating element to stabilize and then into the yarn winding machine.
Here, the yarn scraps, the bavia of the recovered plastic film are sucked and cut into a small dam and brought back into the extruder.
Step 2: Weaving PP fabric sheet
The plastic yarn rolls are fed into the shuttle circular loom to weave into PP fabric tubes and through the structure to roll into PP fabric rolls.
Step 3: Coated PP fabric membrane
The forklift rolls PP fabric onto the film coating machine, then PP sheet is coated with 30 thick PP plastic layer to increase the bond of moisture-resistant fabric. After that, PP fabric rolls were coated and rolled up.
Step 4: Technology to print on woven PP bags
Different from the technology used to print envelopes, the flexo printing technology is used to print on ordinary woven PP bags, PE coated bags or paper bags.
And gravure printing technology is used to print on the OPP film bag to achieve good quality.
Step 5: Make finished products: cut and pack plastic packaging
For woven PP bags that are not printed or Flexo printing cut into finished products when passing through the side-fold system, then proceed to sew or pre-print, then go through automatic counting and packing conveyors.
As for woven PP bags, which are coated with gravure printing film in rolls, they also go through the same system as above and then be pressed edge, cut, sewed and packed.