An ink tube (10) for an ink jet printer is formed by using a thermoplastic
elastomer composition, having a Shore-A-hardness of not more than 70, which comprises
an olefin thermoplastic resin and a rubber component, containing not less than
30 wt % of butyl rubber, which is dispersed finely by dynamic vulcanization the
rubber component in the olefin thermoplastic resin. It is preferable to extrude
the thermoplastic elastomer composition tubularly by a resin extrusion method.
