| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin tube which is low in permeability not only for regular gasoline but also for the fuel containing alcohol, sufficiently high in adhesiveness of a barrier layer (a fuel shut-off layer) to a covered layer (a layer for protecting the fuel shut-off layer), and is capable of easily recycling ends and formed of inexpensive material. SOLUTION: In this resin tube, at least two resin layers are laminated in a tubular manner, at least one layer is the resin layer mainly consisting of PPS, and the other layer is the resin layer mainly consisting of PBT copolymer. At least one set of the resin layer mainly consisting of PPS and the resin layer mainly consisting of PBT are provided, and the other layers are formed of PBT copolymer. At least naphthalene di-carboxylic acid unit is substituted for a part of terephthalic acid unit constituting the PBT copolymer.
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