A glass container includes a glass body comprising an external surface, an internal surface opposite the external surface, a thickness T extending between the external surface and the internal surface, and an external surface layer extending from the external surface into the thickness of the glass body, wherein the external surface layer has a porosity greater than a porosity of a remainder of the glass body extending from the external surface layer to the internal surface.

A glass container includes a glass body comprising an external surface, an internal surface opposite the external surface, a thickness T extending between the external surface and the internal surface, and an external surface layer extending from the external surface into the thickness of the glass body, wherein the external surface layer has a porosity greater than a porosity of a remainder of the glass body extending from the external surface layer to the internal surface.

Disclosed are an environmentally-friendly glass composition for laundry detergents and washing supplements, and a method for manufacturing a glass powder thereof, wherein the glass composition is a borate glass containing large amounts of K.sub.2O and Na.sub.2O and a small amount of SiO.sub.2, and the elution properties of ions are maximized, thus enabling the production of a high concentration of elution water. As a result, the present invention uses to advantage the low chemical durability of borate glass, which is a major disadvantage of borate glass, and thereby maximizes the elution properties of the glass to form a large amount of OH.sup. ions and B(OH).sub.4.sup. ions within a short period of time, and thus can exhibit excellent washing power during the washing of laundry.

Disclosed are an environmentally-friendly glass composition for laundry detergents and washing supplements, and a method for manufacturing a glass powder thereof, wherein the glass composition is a borate glass containing large amounts of K.sub.2O and Na.sub.2O and a small amount of SiO.sub.2, and the elution properties of ions are maximized, thus enabling the production of a high concentration of elution water. As a result, the present invention uses to advantage the low chemical durability of borate glass, which is a major disadvantage of borate glass, and thereby maximizes the elution properties of the glass to form a large amount of OH.sup. ions and B(OH).sub.4.sup. ions within a short period of time, and thus can exhibit excellent washing power during the washing of laundry.

Glass compositions include boron oxide (B.sub.2O.sub.3), lanthanum oxide (La.sub.2O.sub.3), tungsten oxide (WO.sub.3) and zirconia (ZrO.sub.2) as components and may optionally include niobia (Nb.sub.2O.sub.5), titania (TiO.sub.2), bismuth oxide (Bi.sub.2O.sub.3), yttria (Y.sub.2O.sub.3), tellurium oxide (TeO.sub.2), SiO.sub.2, PbO and other components. The glasses may be characterized by high refractive index at 587.56 nm and low density at room temperature relative to known glasses.

Glass compositions include boron oxide (B.sub.2O.sub.3), lanthanum oxide (La.sub.2O.sub.3), tungsten oxide (WO.sub.3) and zirconia (ZrO.sub.2) as components and may optionally include niobia (Nb.sub.2O.sub.5), titania (TiO.sub.2), bismuth oxide (Bi.sub.2O.sub.3), yttria (Y.sub.2O.sub.3), tellurium oxide (TeO.sub.2), SiO.sub.2, PbO and other components. The glasses may be characterized by high refractive index at 587.56 nm and low density at room temperature relative to known glasses.