What is filler masterbatch?
Filler masterbatch is a concentrate in which finely ground, surface-coated calcium carbonate (CaCO₃) is compounded into pellets with a polymer carrier. It replaces part of the polymer in your formulation; with the right grade it lowers unit cost while keeping film, raffia, injection and blow molding products easy to process. Filler is the first product group Erk-Han puts forward for export: the EH-FIL series is made for regular, high-volume purchasing.
Balancing cost and performance
The let-down ratio ranges from 10% to 40% depending on the application. The higher the ratio, the less polymer you use, but the product itself sets the limit for melt flow, tensile strength and surface appearance. That is why we recommend the grade and ratio together with your product thickness, line speed and base polymer.
What it does in your process
- Stiffness and dimensional stability: CaCO₃ increases rigidity and heat resistance in injection and blow molded parts; faster cooling in the mold can shorten cycle time.
- Film and bags: It gives a matte surface, improves ink adhesion and print quality, and reduces blocking between layers when the roll is opened.
- Raffia and woven sacks: It adds opacity and stiffness to the tape; coated CaCO₃ prevents dusting on the surface.
- Recycling: EH-FIL RECYC is formulated with a desiccant and anti-gas additive to reduce voids and bubbles in recycled PE and PP.
The EH-FIL series
The carrier polymer is chosen to be compatible with the polymer of your final product. The table shows each grade's carrier polymer, CaCO₃ content, recommended let-down ratio and main application.
| Grade | Carrier Polymer | CaCO₃ Loading Ratio | Recommended Usage Rate | Main Application |
|---|---|---|---|---|
| EH-FIL PE | PE (LDPE / LLDPE) | 70% – 80% | 10% – 30% | Film, bags, shrink, lamination |
| EH-FIL PP | PP (Homo / Copolymer) | 75% – 80% | 10% – 40% | Raffia, woven sacks, big-bags |
| EH-FIL INJ | PP / PE | 70% – 75% | 10% – 30% | Injection, houseware, packaging parts |
| EH-FIL BLOW | HDPE | 70% – 75% | 5% – 20% | Blow moulding, jerry cans, buckets |
| EH-FIL BOPP | PP | 65% – 70% | 5% – 15% | BOPP film, yarn, synthetic paper |
| EH-FIL RECYC | PE / PP | 70% – 78% | 10% – 35% | Recycling formulations (with moisture/gas removal) |
* Values are typical reference ranges. The final grade and ratio are set by a sample trial with your own raw material on your own line.
Environment and regulations
Calcium carbonate is a natural mineral; it reduces the use of petroleum-based polymer in proportion to the amount used. Tell us at the quotation stage about requirements such as REACH, RoHS or food contact (for example EU 10/2011 in the EU), and we will agree on the right series and the documents that ship with it. On request, we provide our raw material suppliers' FDA 21 CFR compliance declarations together with an Erk-Han declaration of compliance.
Export orders
EH-FIL orders are loaded at our plant in Bursa OSB, 30 minutes from Gemlik Port. We work under EXW, FCA, FOB, CFR, CIF and DAP, and prepare the certificate of analysis (CoA), MSDS and TDS together with the ATR, EUR.1 and certificate of origin each shipment requires. For samples and prices, use the quotation form or write to our foreign trade team.