| 摘要 |
PURPOSE: A plastic bottle is provided to prevent deformation caused by the flow orientation of a floor part, to improve an external appearance and to suppress crazing and gate whitening. CONSTITUTION: A bottle includes a neck part(1) as an entrance, a shoulder part(2) connected to the neck part, a barrel part(3) and a floor part(4). The floor part is formed by biaxially stretch-blow-molding a thermoplastic resin and has an independent structure. In addition, the floor part is made up of a peripheral circular earthing part(5) and a central dome shape part(6) expanded upward. The center(7) of the floor part is not affected by the remaining deformation caused by the flow orientation
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