Revealing the Latest PP Woven Bag Production and Printing Process 2020

Besides learning information about what PP woven bags are, many customers are also interested in and researching the PP woven bag production and printing process. PP woven bags are known as indispensable plastic bags for several industries such as: Fertilizer, chemicals, food, livestock… However, few people know what PP woven bags are and how the production process works. Understanding this, within the scope of this short article below, we will share information about the above questions. Let’s explore with May Hop Phat.

What are PP Woven Bags?

Table of Contents

• What are PP Woven Bags?
• Revealing the Latest PP Woven Bag Production and Printing Process 2020
  • Step 1: Creating PP Fibers
  • Step 2: Weaving PP Fabric
  • Step 3: Coating PP Fabric (if any)
  • Step 4: Printing on PP Woven Bags (if any)
  • Step 5: Cutting Finished Products and Packaging
  • Conclusion

Before learning about the PP woven bag production and printing process, let’s find out what PP woven bags are. PP plastic bags are plastic made from virgin plastic pellets numbered 1102K, T3034. In reality, these virgin plastic pellets are imported directly from Thailand, Arab countries, or domestic raw material manufacturing plants.

The color of PP woven bags is usually milky white, transparent from virgin plastic pellets. However, you often see PP woven bags in different colors; to obtain those colors, manufacturers must add color powder or colored plastic pellets during the production process. In summary, PP woven bags are a type of Polymer and are a product of Propylene polymerization reaction.

Revealing the Latest PP Woven Bag Production and Printing Process 2020

By now, you probably understand what PP woven bags are, as well as the outstanding features of this product line, right? Let’s explore the PP woven bag production and printing process together. Let’s see how the production process works to create beautiful, high-quality bags.

Typically, the affordable PP woven bag production and printing process goes through the following steps: Creating PP fibers => Weaving => PP coating (if any) => Printing on PP bags (if any) => Cutting finished products => Inspection and packaging. Specifically:

Step 1: Creating PP Fibers

PP fibers are the material created from PP plastic pellets. The method to create PP fibers is also quite simple. You just need to follow these steps in sequence:

• First, we put PP plastic pellets into the hopper of the fiber creation equipment.
• Then, thanks to the suction power of the vacuum machine, PP plastic pellets are fed into the extruder. This is where the melting heating process takes place. Next, the screw extrudes the liquid plastic through the die mouth. Of course, the length and width can be adjusted according to each customer’s requirements.
• At this time, the formed plastic film continues to move through the water cooling tank for shaping. Then the film goes into the slitting knife shaft to become fibers with the required width. Thus, the PP fiber creation process is completed, and after PP fibers are created, they are fed into the fiber winding machine.

During the fiber creation process, fiber waste and Bavia of the plastic film are recovered by vacuum method, then cut and crushed, fed back into the extruder. Thanks to this fiber creation process, PP woven bags are created with greater strength and durability.

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Step 2: Weaving PP Fabric

After creating PP fibers according to the available size, the fiber rolls are fed into a 6-shuttle circular weaving machine. Thanks to the slitting knife into PP fabric sheets through the mechanism, rolled into PP fabric rolls.

Step 3: Coating PP Fabric (if any)

To be able to coat PP fabric, manufacturers often use forklifts to transport PP fabric rolls to the coating machine. In reality, they coat a 30-thick PP plastic layer. Coating PP fabric has the effect of increasing fiber bonding, preventing moisture for the best finished product. Then move on to printing PP bags.

Step 4: Printing on PP Woven Bags (if any)

In reality, for regular PP woven bags or bags with PE coating, bag manufacturers proceed with printing using different printing technologies. However, OPP film laminated bags are most commonly applied because they provide high aesthetics through high gloss and high transparency. However, for affordable PP woven bag products, this stage is usually skipped to save costs.

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Step 5: Cutting Finished Products and Packaging

In this step, the PP woven roll goes through the gusset folding system (if any) then cut into finished products. Depending on each PP woven bag manufacturer, they will choose to print first then sew later or vice versa. At the end of this process, finished PP woven bags go through the automatic counting conveyor and proceed to packaging.

Then, PP woven bags are inspected, compressed into bundles, stacked on pallets, transported by forklift to the warehouse, waiting for delivery day. The size and load capacity of PP woven bags produced are diverse. Depending on each customer’s requirements, they can contain from 5 to 100kg.

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Conclusion

Through the above sharing, surely you now know what PP woven bags are and how the PP woven bag production and printing process works. Hopefully with those shares, you understand more about the most popular PP woven bags today.

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