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Application filed by Zhejiang Helen Plastic Co LtdfiledCriticalZhejiang Helen Plastic Co Ltd
Publication of NZ742354ApublicationCriticalpatent/NZ742354A/en
Publication of NZ742354BpublicationCriticalpatent/NZ742354B/en
The present utility model relates to the technical field of expandable hoses, and relates to a flexible expandable hose, comprising a flexible hose made of flexible bodies. More than two spiral thread layers or woven mesh layers that can extend or retract as the flexible hose extends or retracts are disposed in the flexible hose. When the spiral thread layers are disposed, spiral directions of two adjacent spiral thread layers are opposite, an outer diameter of an outermost spiral thread layer or woven mesh layer is less than an outer diameter of the flexible hose, and an inner diameter of an innermost spiral thread layer or woven mesh layer is less than an inner diameter of the flexible hose. The advantages comprise a light weight, a large expansion amount, high tensile strength, and a long service life.