SHANGHAI KWONGFAT TRADING CO.,LIMITED

 Water swelling water stop strip, product type water stop strip and BF swelling rubber are made by mixing rubber with water-soluble macromolecule water-encountering material. The product type water stop strip is a kind of general rubber product characteristic, and has the function of self-expanding in water to stop water. The material has the sealing and waterproofing function of the elastic seam sealing material. When the distance between the two sides of the seam increases below the elastic recovery rate of the elastic waterproofing material, the material has the property of water swelling, which can stop water within the expansion range of the material. The expander has the property of rubber, more water, acid and alkali resistance. The product type water stop strip has excellent elasticity, elongation and expansion water stop performance. The expansion rate in water can be adjusted between 40% and 250%. The expansion body keeps the elasticity and elongation of rubber, and the expansion rate is not affected by water quality. Water resistance, chemical resistance, good durability, no harmful substances, no swelling precipitates, no pollution to the environment. 3, in a wider temperature range, it can play an excellent sealing performance and good weatherability. 4. It can be made into any shape of sealing tape and sealing ring according to user's needs. It can be combined with general rubber and made into compound waterproof material.