Hose with improved resistance to deformation, and method

A crush-resistant thermoplastic hose comprising a normally flexible thermoplastic tube, a normally flexible thermoplastic outer cover, and at least one annular reinforcement layer of fiber bundles sandwiched between the tube and cover, and a continuous adhesive aqueous-insoluble polymeric film impregnating such fiber bundles and binding a reinforcement layer to at least one of said cover and tube, the continuous polymeric film serving to stiffen the hose compared to the same hose construction without the polymeric film ("control") to the extent that a force increased by at least about 40 percent compared to the control is required to deform the hose to one-half its original inside dimension using ASTM D 622 deformation test.

A hose resistant to deformation comprising a polymeric tube having a given inside dimension, a polymeric outer cover, at least one annular reinforcement layer of fiber bundles sandwiched between the tube and cover, and a continuous adhesive aqueous-insoluble polymeric film impregnating such fiber bundles to form an agglutinous mass of adhesive strings interconnecting individual fibers of the bundle, and the film serving to bind a reinforcement layer to at least one of said cover and tube, the continuous polymeric film serving to stiffen the hose compared to the same hose construction without the polymeric film ("control") to the extent that a force increased by at least about 40 percent compared to the control is required to deform the hose to one-half its original inside dimension using ASTM D 622 deformation test.

A hose resistant to deformation comprising a polymeric tube, a polymeric outer cover, at least one annular reinforcement layer of fiber bundles formed of a multitude of fine fibers sandwiched between the tube and cover, and a continuous adhesive aqueous-insoluble polymeric film impregnating such fiber bundles and adhesively interconnecting individual fibers of the bundle as a substantially crack-free film, and the adhesive film binding a reinforcement layer to at least one of said cover and tube, the continuous polymeric film serving to stiffen the hose compared to the same hose construction without the polymeric film ("control") to the extent that a force increased by at least about 40 percent compared to the control is required to deform the hose to one-half its original inside dimension using ASTM D 622 deformation test.

A hose resistant to deformation comprising a polymeric tube, a polymeric outer cover, at least one annular reinforcement layer of fiber bundles sandwiched between the tube and cover, and a continuous adhesive aqueous-insoluble polymeric film having a modulus at 100 percent elongation of at least about 200 psi and a glass transistion temperature T.sub.g of less than about 72.degree. F. impregnating such fiber bundles and adhesively interconnecting individual fibers of the bundle, and binding a reinforcement layer to at least one of said cover and tube, the continuous polymeric film serving to stiffen the hose compared to the same hose construction without the polymeric film ("control") to the extent that a force increased by at least about 65 percent compared to the control is required to deform the hose to one-half its original inside dimension using ASTM D 622 deformation test.