The difference between filler masterbatch loaded on PE and PP – a comprehensive comparison

When should you choose each type? And how does it affect the properties of the final product?

The success of a plastic product depends largely on the selection of the right raw materials, particularly filler masterbatch, which is used to improve performance and reduce costs. However, manufacturers often wonder:

Should I use filler loaded with polyethylene (PE) or polypropylene (PP)?

In this article, we provide a clear, practical comparison between the two types to help you make the right decision based on the nature of your product and production line.

First: What is the difference between PE and PP?

Second: What does this mean when choosing fillers?

1. PE-loaded filler:

• Suitable for applications using PE materials such as LDPE, LLDPE or HDPE.

• Ensures excellent mixing homogeneity and prevents separation of ingredients.

• Used in:
  ✅ Plastic Bags – Films
  ✅ Packaging
  ✅ Soft Pipes

2. Filler loaded on PP:

• Used with various types of PP materials

• Gives additional rigidity and mechanical strength.

• Preferably in:
  ✅ Injection Molding Products
  ✅ Rigid Containers
  ✅ Synthetic fibers

Third: How do you choose the most suitable one for your production line?

• Ask yourself the following questions:

  • What type of base polymer do I use?

  • Does the final product need to be flexible or rigid?

  • What is the operating temperature in the production line?

If the answer is PE, choose PE filler.
If the answer is PP, use PP filler.
If you’re working with a mixture of the two, consult Epic’s technical support team to choose the ideal formula.

Important point: do not confuse them!

Using PP-based fillers in PE (or vice versa) can lead to:

• Poor mix homogeneity.
• Problems with the quality of the final product.
• Increased rejection rates or extrusion or molding problems.

What does Epic offer you?

At Epic, we offer:

• High-quality PE filler.
• PP filler specially formulated for excellent performance and thermal stability.
• Technical consultations to determine the most suitable formulation for your plant’s needs.

Conclusion:

Choosing between PE filler and PP filler is not just a technical detail; it’s a strategic decision that impacts cost, quality, and productivity.

Start with your material, determine the characteristics of your desired product, and make an intelligent decision based on expert recommendations.

Contact us today to test the free sample that best suits your production line.