Hybrid Tube For Industrial And Hydraulic Hose Products And Methods Of Making The Same

Abstract: A hybrid tube construction for use in, e.g., industrial or hydraulic hoses is described, the hybrid tube generally including coextruded interior tube and outer tube layers. The interior tube layer of the hybrid tube is a functional layer having chemical resistance to the fluid to be conveyed within the hybrid tube, while the outer tube layer is a modulus layer providing the hybrid tube with strength and flexibility. The hybrid tube may optionally include a reinforcement layer and/or cover layer. Manufacture of the hybrid tube generally uses simultaneous coextrusion of the interior tube layer material and the outer tube layer material to thereby form the hybrid tube construction. In some embodiments, the hybrid tube formed by coextrusion has sufficient structural integrity that supporting mandrels and/or post-extrusion curing steps are not required.

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