Patent ID: 6516963
Filing Date: 2003-02-11
Classification: A61J,B29C,B29K,B29L

Abstract:
An injection-blow-molded resin nursing bottle having a barrel of a generally cylindrical shape and having a closed bottom, a top, a mouth, and a gate flash at a central portion of the bottom, the gate flash being generated when resin is previously injected to prepare a parison to form the nursing bottle,the barrel having a diameter that gradually increases from a location adjacent the mouth towards the bottom, the nursing bottle being formed mainly of a polyether sulfone (PES) resin, wherein the central bottom portion is raised to be of a convex shape bulging up towards the mouth of the bottle, and a height of the raised bottom portion is from 9% to less than 15% of an inner diameter that is possessed by a floor-engaging rim of the bottom, the rim being generally circular in a bottom plan view, the raised bottom portion having a substantially circular shape as viewed from the top of the barrel, the raised bottom portion having a first surface that is convexly curved opening in one direction over substantially the entire extent of the first surface over the inner diameter, the barrel having a non-circular cross-sectional shape between the top and bottom of the barrel as viewed from the top of the barrel.