| 摘要 |
Provided are a white glass container having excellent mechanical strength and whiteness, irrespective of the melting conditions or molding conditions for the glass composition; and a method for producing a white glass container. A white glass container having at least a neck portion and a body portion and being derived from a phase separation phenomenon of a halogen-free glass composition, and a method for producing a white glass container are disclosed, in which the glass composition including as ingredients at least SiO 2 , P 2 O 5 , Al 2 O 3 , B 2 O 3 , R 2 O (R = Na or K), MgO, CaO and the like; the neck portion and the body portion respectively have, in a portion or in the entirety, a white multilayer structure formed to successively include a white transparent layer of relatively low white coloration and a white opaque layer of relatively high white coloration from the outer surface side; and the contents of P 2 O 5 and CaO in the white transparent layer are made smaller than the contents of P 2 O 5 and CaO in the white opaque layer, respectively. |
