WHITE GLASS CONTAINER AND METHOD OF PRODUCING WHITE GLASS CONTAINER

摘要

The present invention provides a white glass container which does not contain a fluorine compound in a significant amount, which has a multi-layer structure derived from a phase separation phenomenon of a glass composition in part or the whole of the white glass container without depending on melting conditions or molding conditions of the glass composition, and which is excellent in mechanical strength or whiteness, and a method of efficiently manufacturing the white glass container.;In the white glass container and the method of manufacturing the white glass container, the multi-layer structure, which is derived from a phase separation phenomenon of the glass composition having the following glass blending composition on the basis of the total amount and which includes a white transparent layer having relatively low whiteness and a white opaque layer having relatively high whiteness, is provided in part or the whole of the white glass container.;SiO2: 45% by weight to 58% by weight, P2O5: 2% by weight to 8% by weight, Al2O3: 5% by weight to 9% by weight, B2O3: 5% by weight to 13% by weight, Na2O: 5% by weight to 12% by weight, K2O: 1% by weight to 6% by weight, ZnO: 3% by weight to 10% by weight, CaO: 3% by weight to 10% by weight, CeO2: 0.1% by weight to 2% by weight, and Er2O3: 0.01% by weight to 0.5% by weight.

主权项

1. A white glass container which is derived from a phase separation phenomenon of a glass composition having the following glass blending composition on the basis of the total amount and which has a multi-layer structure including a white transparent layer having relatively low whiteness and a white opaque layer having relatively high whiteness in part or the whole of the white glass container,
SiO2: 45% by weight to 58% by weight, P2O5: 2% by weight to 8% by weight, Al2O3: 5% by weight to 9% by weight, B2O3: 5% by weight to 13% by weight, Na2O: 5% by weight to 12% by weight, K2O: 1% by weight to 6% by weight, ZnO: 3% by weight to 10% by weight, and CaO: 3% by weight to 10% by weight.