WHITE GLASS CONTAINER AND METHOD FOR PRODUCING SAME
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United States of America Patent
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Issued Date -
May 18, 2017
app pub date -
Aug 4, 2015
filing date -
Aug 5, 2014
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Abstract
A white glass container derived from a phase separation phenomenon of a halogen-free glass composition includes a neck portion and a body portion. The glass composition includes as ingredients at least SiO2, P2O5, Al2O3, B2O3, R2O (R=Na or K), MgO, CaO and the like. The neck portion and the body portion respectively have 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. The contents of P2O5 in the white transparent layer are made smaller than the contents of P2O5 in the white opaque layer.
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