| 摘要 |
<p>A preform (10) for use in blow molding a returnable transparent refillable container, said preform being an injection molded member formed of a polyester, said preform having an elongated body (16) for forming a container body and being closed at one end and open at the opposite end, said preform open end having a neck finish (12) and said elongated body having a portion (14) adjacent said neck finish (12) tapering in wall thickness for forming a container shoulder portion, said closed one end (20) being defined by a bottom having a generally hemispherical outer surface, characterised in that said closed one end (20) of said preform body comprises a cylindrical container base-forming flute portion (22) having a greater wall thickness relative to the wall thickness of said preform body (16).</p> |
