1. Preventing Tape Fibrillation
When polypropylene tape is stretched at high draw ratios (typically 1:5 to 1:7) to induce molecular orientation and tensile tenacity, unreinforced polymer can develop longitudinal splits or fibrillation. Micronized CaCO₃ filler compounds provide microscopic stress dissipation, maintaining uniform tape width without fraying.
2. Anti-Slip and Stacking Stability
Filler masterbatch increases the coefficient of friction (COF) on the woven sack surface. This prevents stacked cement, grain, and fertilizer sacks from sliding off pallets during transport and warehouse storage.
3. UV Stabilization for Outdoor Storage
Because agricultural and construction sacks are frequently stored outdoors in high UV environments, blending Hindered Amine Light Stabilizer (HALS) masterbatch is essential to protect the polymer matrix from solar photo-oxidation.