| 摘要 |
<p>PURPOSE:To enable the titled bottle to be scrapped in a folding manner, and give an excellent gas barrier property and pressure resisting strength thereto, and further prevent a taste of liquid contents in it from getting worse by allowing the thickness of a barrel part in a polyester bottle comprising a plug part and a barrel part to be 20-150mum thick, and enabling it to be buckled in the vertical direction during the period of non-filling time. CONSTITUTION:The bottle is made in a shape of having a barrel part 4 below a plug part 2 and a support ring 7, and consists of polyester resin. Or, the barrel part is made in a double-layered structure that is laminated with polyester resin and polyamide resin, or in a multi-layered structure that is polyester resin is laminated with resin selected from copolymerized polyester resin formed of a and dicarboxylic acid constitutional unit, a dihydroxylic compound constitutional unit, and a multi-functional hydroxylic compound constitutional unit having at least three hydroxylic groups. The wall thickness is made 20-150mum and enabled to be buckled in the upper and lower direction during no-filling period.</p> |
