Thermoplastic elastomer hose having excellent flexibility

Details Thermoplastic elastomer hose having excellent flexibility Thermoplastic elastomer hose having excellent flexibility

1993-06-17

1995-01-10

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 3691, 428 368, 428 361, 428 363, 138137, 138124, 138177, 138DIG7, F16L 1108

Patent

active

053805712

ABSTRACT:
A hose including at least an inner tube, a reinforcing layer and an outer cover, wherein the inner tube and the outer cover are individually composed of a thermoplastic elastomer comprising a vulcanized rubber dispersed in a thermoplastic resin, M.sub.p defined by the following formula (I) is not greater than 70 kgf/cm.sup.2, and flexural rigidity of the hose at a bending radius four times the outer diameter of the hose is 1 kgf or less: ##EQU1## wherein t.sub.1 and t.sub.2 are the thickness of the inner tube and the outer tube (mm), respectively, and M.sub.1 and M.sub.2 are stress (kgf/cm.sup.2) at 25% elongation of the inner tube and the outer cover, respectively.

REFERENCES:
patent: 4881576 (1989-11-01), Kitami et al.
patent: 4905734 (1990-03-01), Ito
patent: 4965111 (1990-10-01), Pratt et al.
patent: 4987017 (1991-01-01), Sato et al.
patent: 5068137 (1991-11-01), Ozawa et al.
patent: 5077108 (1991-12-01), Ozawa et al.
patent: 5264262 (1993-11-01), Igarashi

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