Water-Absorbent Expansion Bag

Water-Absorbent Expansion Bags are our company's core flood control materials for river flood prevention and water conservancy rescue, featuring high efficiency, convenience and durability for diverse emergency scenarios.

Crafted with high-strength non-woven fabric and eco-friendly super absorbent resin, these products go through strict material selection and sophisticated manufacturing. They are tear-resistant, leak-proof, storable for long periods and pollution-free.

Without pre-filling sand, they expand 15 to 20 times in 3-5 minutes when exposed to water. The solid and heavy expanded bags can be quickly stacked into flood barriers to stop floods effectively. Lightweight and portable, they need no large equipment for storage, transportation and operation, significantly cutting rescue time and labor costs.

Product Specifications

· Expansion Time: < 3 minutes (water temperature ≥18℃)

· Compressive Strength: ≥150 kg

· Stackable Height: ≥1.2 m

· Sealing Performance: No obvious leakage of super absorbent polymer (SAP) particles before water absorption; no overflow of contents after water absorption.

· Drop Test: No damage after free fall from 1m height onto flat concrete ground.

· Stitching Thread: 100% combed fine cotton thread

· Product Weight: 0.23 kg ±5% (dry); 18 kg ±5% (after water absorption)

· Expanded Height: 12 cm

· Application Environment: Fresh water; pH 5–8

· Packaging: Corrugated carton / moisture-proof vacuum plastic bag, 50 pcs/ctn

· Carton Size: 42 × 32 × 32 cm

· Gross / Net Weight: 12.5 kg / 11.5 kg

· Storage Conditions: Store in a cool and dry place

· Shelf Life: 5 years

Common FAQs

1. Do I need to fill with sand?

No sand filling required. Just place it directly and activate with water.

2. How long does it take to expand?

Fully expands and sets in 3-5 minutes at room temperature.

3. Can the Water-Absorbent Expansion Bag be reused?

Disposable for flood control. Reusable for standby if kept intact.

4. Can it be stored for a long time?

Sealed moisture-proof package, store in cool dry place, 5-year shelf life.

5. How is the water blocking performance?

Dense and firm after expansion, pressure and seepage resistant with excellent water barrier effect.

6. Is operation complicated?

Lightweight and portable, single-person operation, no equipment needed for rapid deployment.

7. Is the material eco-friendly?

Made of eco-friendly raw materials, non-toxic, odorless and no secondary pollution.

8. Is it easy to break and leak?

Reinforced edge sealing, wear and tear resistant, no damage or leakage.

Packaging & Shipping

Individually sealed packaging, moistureproof, dustproof and damage-resistant, suitable for long-term sea transportation and warehousing. The outer layer adopts thickened export-grade corrugated cartons, which are compression-resistant, drop-proof and sturdy, effectively reducing transportation loss.

Standard packing: 50 pieces per carton, neatly packed and stably stacked for easy container loading. Foreign trade standard carton size: 42×32×32cm, reasonable size saves logistics space and reduces freight costs.

The product is clean, odor-free, environmentally friendly and compliant, meeting export inspection standards with no secondary pollution. Adequate stock supports fast bulk shipment; custom outer packaging, neutral packaging and OEM labeling are available to meet diverse needs of overseas customers.