Water-absorbing expansion bags as a substitute for ordinary sandbags

Hebei Five-Star Water-Absorbing Expansion Hemp Bag
Director Yu Hai from the center introduced that this year, a new type of professional emergency material has been introduced—the rapid water-absorbing expansion hemp bag. These water-absorbing expansion hemp bags look very similar to ordinary hemp bags in appearance, but they contain an inner bag inside. When on-site construction workers place them in water, the bags rapidly inflate like being pumped with air, transforming into a three-dimensional expansion bag within 3 minutes. These hemp bags are produced using the characteristics of polymer water-retaining agents, which rapidly absorb water, swell, solidify, and have a water absorption rate of up to several hundred times, embodying the scientific concept of "using water to block water." The Hebei Five-Star Water-Absorbing Expansion Bag is a high-tech flood control product developed through continuous testing and improvements by Hebei Five-Star's professional flood control and emergency research team, and it has been awarded national invention patents and utility model patents.
Advantages of Hebei Five-Star Water-Absorbing Expansion Bags: They occupy small space, are easy to transport, and solve the issues of space and manpower at construction sites. Additionally, after flood discharge or ebb tide, they do not cause sand and gravel siltation, eliminating the need for further human and material resources to clean up.

Hebei Five-Star Power Equipment Co., Ltd. Water-Absorbing Expansion Bag Instructions for Use
★ Product Model: Freshwater Type JH-20A
★ Product Dimensions: 600 (length) × 400 (width) × 8 (height) mm
★ Product Weight: Before water absorption 0.42Kg ±5%, After water absorption 20Kg ±5%
★ Materials Used: Outer bag: Natural hemp fabric, density 42X39; Inner bag: Textile
★ Usage Environment: Freshwater, acid-base environment 8 > PH > 4
★ Expansion Time: 3-5 minutes (water temperature environment ≥20℃)
★ Compressive Strength: ≥150 Kg
★ Product Packaging: Carton packaging, each carton contains 40 products; every 20 products in the carton are individually packaged in moisture-proof plastic bags
★ Carton Specifications: 420×320×360 mm, five-layer corrugated paper
★ Shelf Life: 4 years