The 40kg cement bags is precisely adapted to the protection requirements of CPA 52.5N cement through structural optimization and material upgrades, while improving filling efficiency and transportation safety. It is the mainstream solution for modern cement packaging.

1.Block Bottom:
The bottom is a square folding structure, which provides stable support and ensures that it is not easy to tip over when stacking. It is suitable for palletized transportation (such as 1.2×1.0m standard pallets).
Valve:
2.Filling port (10-12cm in diameter) is set on the top or side. It closes automatically after filling, without sewing or glue sealing, reducing dust leakage, and is suitable for automated high-speed filling lines (efficiency of 1,200-1,500 bags/hour).
3.Multi-layer composite material:
The outer layer is a high-density polypropylene (PP) woven fabric (≥100g/m²), and the inner layer is covered with moisture-proof PE film or aluminum foil, with a tensile strength of ≥1,800N/5cm and a moisture-proof grade of ASTM E96.

4.Air permeability control: A microporous air permeable membrane is installed at the valve port to balance the filling air pressure and prevent bag expansion or rupture.

50kg 20 kg cement bags are also available in the market