| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a synthetic resin bottle, which retains sealing property provided by a cap and has no irregularities, such as crater-like recessions, in the inner circumferential surface of a mouth cylinder. <P>SOLUTION: The thermoplastic polyester synthetic resin bottle has the mouth cylinder crystallized by heat treatment. On the inner circumferential surface of the mouth cylinder, a smooth area, where the surface is smooth, is formed within a range of 1 to 7 mm from the upper end of the cylinder, while a rough surface area, where the surface is rough, is formed within a prescribed downward range from the smooth area. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
