| 摘要 |
<p>PURPOSE: To provide a blow-molded container of thermoplastic resin which contributes cost reduction and the total weight reduction while imparting sufficient strength to endure an impact during filling of a liquid. CONSTITUTION: A container 10 is flexible and formed to have a cylindrical shape symmetric around a longitudinal axis, includes a shoulder portion 22, an upper end having a mouth portion 12 and a main body with a lower end portion with a large perpendicular ring segment. A base segment defined with a circumferential surface is separated each other by an arcuate segment 30 and has the first inclined portion 40, the second inclined portion 42 located diametrically lateral and lower along the longitudinal axis from the first inclined portion 40 and the ring segment 44 between them. A lower end of downward projection 28 is defined by a curving portion to diametrical outward and upward, having an inner edge continues to the second inclined portion 42 and outer edge continues to a cylindrical sidewall 24.</p> |
