| 摘要 |
PROBLEM TO BE SOLVED: To provide a vessel such as a tubular vessel which can be manufactured without substantially generating any scrap resin by integrating a barrel part with a nozzle part by the joining via a connection part, and has gas barrier property equivalent to or more than that of an intermediate layer continuous tubular vessel. SOLUTION: The barrel part having internal and external layers and the gas-barrier intermediate layer is joined with the nozzle part having internal and external layers and a gas barrier intermediate layer at the connection part, the gas barrier intermediate layer of the barrel part at the connection part overlaps that of the nozzle part, and the ratio (X/h) of the space X in the thickness direction between the gas barrier intermediate layers at the connection part to the tangential distance h between tips of the gas barrier intermediate layers satisfies the inequality (X/h)<=(PB/ PM)×d(D2-d2+4dH)/(8D2tOB), where PB is the gas permeation coefficient of the gas barrier intermediate layer, PM is the gas permeation coefficient of the internal and external layers while these gas permeation coefficients are values at 30 deg.C and 80%RH in a laminated condition for the vessel, d is the nozzle diameter, D is the barrel diameter, H is the nozzle length, and t0B is the thickness of the gas barrier intermediate layer at the barrel part, respectively.
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