Application of Polyurethane in Fire Hose Lines
Release time:
31 Aug,2018
Introduction to Fire Hoses
Fire hoses are flexible tubes used to convey high-pressure water or fire-retardant liquids such as foam. They typically consist of a tubular fabric layer woven from warp and weft threads, combined with a lining (or cover) that is either steam-vulcanized or bonded using adhesives. Traditional fire hoses feature a rubber lining with a linen braid wrapped around their outer surface. More advanced fire hoses, on the other hand, are made from polymeric materials such as polyurethane. Both ends of a fire hose are equipped with metal fittings, which allow the hose to be connected to another hose for extending its length or to a nozzle to increase the pressure of the liquid spray.
Fire hose structure
Due to the wide variety of fire hoses available, their structures also come in many different types. However, all basic structures consist of five main components: a fabric layer, a lining, a coating, a cover layer, and an adhesive layer.
Fire Hose Classification
Polyurethane application in fire hoses
·Lining: The lining is a smooth, waterproof layer with a certain degree of strength located on the inner surface of the fabric layer, ensuring the smooth flow of water or other liquids. Commonly used materials include rubber, PVC, and TPU.
TPU lining characteristics:
·Domestic fire hose manufacturers generally use polyether-based TPU to produce high-quality TPU fire hoses.
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