Fillers are widely used in EVA, rubber, PU, and PVC shoe materials to reduce cost, improve strength, and fine-tune hardness.

Most Common Shoe Fillers:

• Calcium Carbonate: Common in EVA and PVC soles to reduce costs and increase stiffness.

• Talc Powder: Improves flexibility, heat resistance, and process flow; used in rubber soles and midsole compounds.

• Masterbatch Fillers: Pre-mixed concentrates for easier blending and better dispersion in shoe compounds.

Why Are Fillers Important in Shoe Production?

• Lower raw material costs

• Improve dimensional stability and abrasion resistance

• Enhance processability during injection or foaming

• Adjust hardness and rebound properties

Choosing the right filler ensures consistent quality and mechanical performance in sports shoes, sandals, safety boots, and everyday footwear.