Patent ID: 8592018

Claim:
A tube composed of a resin composition comprising: a styrene thermoplastic elastomer (a) and a polypropylene resin (b) that has a melt flow rate of 15 to 50 g/10 minutes at a temperature of 230° C. and at a load of 21.2 N, wherein a mass ratio (a)/(b) of the styrene thermoplastic elastomer (a) to the polypropylene resin (b) is 90/10 to 40/60; wherein the styrene thermoplastic elastomer (a) is a hydrogenated block copolymer prepared by hydrogenating a block copolymer comprising polymer block(s) (A), wherein in polymerized form polymer block(s) (A) comprises at least an aromatic vinyl unit, and wherein a total content of polymer block(s) (A) in the styrene thermoplastic elastomer (a) before hydrogenation is 5 to 40 mass % with respect to a total amount of the styrene thermoplastic elastomer (a); and a polymer block (B) that has a hydrogenation ratio of 70% or more, that comprises a 1,2-bond and a 3,4-bond at a content of 30 to 85 mol %, and that in polymerized form comprises at least one unit selected from the group consisting of isoprene and 1,3-butadiene; wherein said resin does not contain a softening agent; and wherein the tube has a ratio I(14)/I(15) of a diffraction peak intensity [I(14)] at a scattering angle (2θ) of 14° to a diffraction peak intensity [I(15)] at a scattering angle (20) of 15° of 1.7 or more in wide-angle X-ray diffraction.