Multi-layered, blow molded container and process for molding the same

A process for molding a multi-layered blow molded container having a neck, a shoulder, a bottom and a body, the process comprising:

• (1) utilizing a die for extrusion molding a multi-layered parison, the die comprising three channels for forming cylindrical layers, which include an inner-layer channel, a middle-layer channel, and an outer-layer channel in this order starting from an inside of the container, and also comprising a confluence channel located downstream of the three layer-forming channels by way of a point of confluence;
• (2) supplying the inner- and outer-layer channels with a same synthetic resin, and supplying the middle-layer channel with a recycled material consisting primarily of the same synthetic resin that is supplied to the inner- and outer-layer channels, blocking synthetic resin flow through the middle-layer channel, or reducing the flow rate, with predetermined timing, and extrusion molding the multi-layered parison having a thin middle-layer zone having a thin middle layer in a predetermined height;
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• (3) pinching off thus-obtained parison at the thin middle-layer zone to form a closed lower end, and blowing air through the opening at the upper end to blow mold the multi-layered blow molded container having the thin middle-layer zone at a vicinity of a pinch-off portion of the bottom and extending on either side of the pinch-off portion to a flat wall portion at the bottom of the container.