Woven Bags
Valve Bag
Self-sealing fill spout for high-speed lines
Self-closing valve sacks compatible with automatic filling lines for cement, mortar and powdered chemicals.
Auto-fill compatible
Dust-tight
Stackable
20 – 50 kg
Specifications
| Material | PP woven + PE coating |
|---|---|
| Valve type | Sleeve / Tuck-in |
| Capacity | 20 – 50 kg |
Applications
Cement
Mortar
Dry chemicals
Lead time
15 – 30 days
MOQ
3,000 pcs
Craftsmanship
From resin to finished bag
Every bag is produced under one roof in our Tianjin facility — full vertical control from raw material to final stitching.
1
Virgin PP Resin
100% virgin polypropylene pellets — no recycled blends, ensuring consistent tensile strength and food-grade safety.
2
Circular Loom Weaving
High-speed circular looms produce uniform tubular fabric with precise denier and weaving density control.
3
Reinforced Webbing
Heavy-duty PP webbing loops manufactured in-house — tested to a 5:1 safety factor for full SWL.
4
Industrial Stitching
Double-needle lockstitch sewing with bonded polyester thread for burst-proof seams.
