| 摘要 |
<p>A method of manufacturing a hot-fill container ( 1 ) by means of blow molding a preform ( 16 ) provided with a wall and a closed bottom ( 19 ), said method comprising the steps of:
- heating the preform ( 16 ) at a temperature greater than the glass transition temperature of the plastic;
- introducing the such heated preform ( 16 ) within a mold ( 32 ) provided with a mold base ( 36 ) and sidewalls ( 34A , 34B ), which sidewalls are heated at a predetermined temperature;
- blow molding the preform ( 16 ) to form the container ( 1 ) for subsequent hot-fill applications;
wherein:
- the wall of said preform ( 16 ) has a lower end segment ( 24 ) of increased thickness and the bottom ( 19 ) has a thickness lower than the lower end segment ( 24 ),
- the preform ( 16 ) is subjected to a length stretch ratio comprised between 3.4 and 3.9, and a hoop stretch ratio comprised between 3.5 and 3.9.</p> |
