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55results about How to "Solve the lack of penetration" patented technology

Hems, edges, patches and seams for durable, water repellant woven fabric, and methods for making the same

Edges, hems, patches and seams for woven fabric that has been treated for water repellency, and methods for making the same, are shown and described. In one particular embodiment of the invention, for example, a lapped seam between two pieces of water repellent fabric has an outer material at least partially overlapping an inner material, and a laminate strip positioned between the overlapping portions of the materials. The outer and inner materials, which are both oriented in the same direction, have an exterior layer of woven fabric that has been treated with water repellent and / or stain repellent chemicals, and an inner layer comprising a polymer membrane, such as polyurethane. The laminate strip has a bottom portion in contact with the outer layer of the inner material. The bottom portion has a low melt point, high flow rate adhesive system of one or more layers that penetrates and surrounds the fibers in the woven fiber of the outer layer of the inner piece of material. The laminate strip also has a top layer in contact with the inner layer of the outer piece of material. The top layer of the laminate is a thin, elastic, highly abrasion resistant material with a strong bonding affinity for polyurethane. The layers of the laminate strip bond to the adjacent layers of the overlapped material to create a strong lap seam.
Owner:FOWLER

Anti-explosion foam spray fire extinguishing system

The invention discloses an anti-explosion foam spray fire extinguishing system. The system comprises a fire pump set, a liquid storage tank, a foam proportional mixer, a liquid supply pipe network, horizontal pipelines, pressure telescopic pipes and water mist nozzles. By adopting a telescopic hidden arrangement mode, the reliability of the fire extinguishing system is remarkably improved. By adopting a multi-stage sealing structure, the pressure telescopic pipes solve the problems of easiness in liquid leakage, misoperation, immobility, small applicable pressure range and the like. The multi-section pressure telescopic pipes are adopted, the water mist nozzles can spray water mist close to a fire object, and the problems that an existing water mist nozzle is short in range, insufficient in penetrating force and prone to being influenced by environment wind and fire plume are solved. The fire extinguishing system disclosed by the invention has explosion-proof, dustproof and high-temperature-resistant functions, is safe, reliable, high in fire extinguishing efficiency, long in spraying time, convenient to install and use, small in influence on a protected object, and suitable for extinguishing a fire of a charged oil-immersed transformer; and the technical problem of fire extinguishing of a large oil-immersed transformer is effectively solved, and the system can be used for transporting the oil-immersed transformer and also newly building the oil-immersed transformer.
Owner:应急管理部天津消防研究所
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