Abstract: A synthetic resin vessel having a handle, which comprises a vessel proper comprising a neck, a barrel and a closed bottom, which are integrally prepared by blow-forming or draw-blow-forming of a synthetic resin, a recess formed at a part of the barrel so that a deepest part of the recess has a diameter substantially equal or slightly larger than the diameter of the neck, a projection formed substantially at the center of the recess so that the section of the projection is non-circular, a circumferential concave groove formed around the projection, and a pair of short concave grooves extending from the top end and bottom end of the circumferential concave groove along the concave portion upwardly and downwardly, respectively, and a handle comprising an endless holding portion and an endless attachment portion, which are integrally prepared by injection molding of a synthetic resin, the handle being fixed by inserting the attachment portion into the circumferential concave groove and inserting the central part

Abstract: Disclosed is a multi-layer gas-barrier drawn polyester vessel, which comprises an open end portion, a barrel portion which is molecularly oriented in at least one axial direction and a closed bottom portion, said vessel having inner and outer layers composed of a thermoplastic polyester or copolyester and a gas-barrier intermediate layer composed of an ethylene/vinyl alcohol copolymer having an ethylene content lower than 50 mole %, wherein a copolymer nylon resin or a blend of a plurality of nylon resins is interposed as an adhesive between two adjacent layers.

Abstract: A process for the production of a multi-layer pipe to be used for formation of a bottle by draw-blow-forming, comprising forming by co-extrusion a pipe having inner and outer layers of a polyester composed mainly of ethylene terephthalate units and an intermediate layer of an oxygen-barrier resin interposed between the inner and outer layers, an adhesive resin layer is preferably interposed between every two adjacent layers. The co-extruded multi-layer pipe in the molten state so that the diameter of the pipe is sized is uniform. The process continues by cooling the outer portion of the molten multi-layer pipe by contact with water and simultaneously introducing an inert gas or an inert gas containing a water mist into the interior of the pipe to thereby cool the inner portion of the pipe and prevent oxidation in the pipe A.Multi-layer pipe prepared according to this process is excellent in the transparency and the draw-formability into a multi-layer drawn bottle.

Abstract: A process for the production of a multi-layer pipe to be used for formation of a bottle by drawblow-forming, comprising forming by co-extrusion a pipe having inner and outer layers of a polyester composed mainly of ethylene terephthalate units and an intermediate layer of an oxygen-barrier resin interposed between the inner and outer layers. An adhesive resin layer is preferable interposed between every two adjacent layers. The co-extruded multi-layer pipe is sized in the molten state so that the diameter of the pipe is uniform. The process continues by cooling the outer portion of the molten multi-layer pipe by contact with water and simultaneously introducing an inert gas or an inert gas containing a water mist into the interior of the pipe to thereby cool the inner portion of the pipe and prevent oxidation in the pipe. A multi-layer pipe prepared according to this process is excellent in the transparency and the draw-formability into a multi-layer drawn bottle.