The present invention provides a tin alloy bath for a float bath, an apparatus for manufacturing a float glass, a method for manufacturing a float glass that can provide a high quality float glass in which defects due to coagulation and falling of a volatile tin component have been suppressed, and a float glass manufactured using those. The above-mentioned tin alloy bath for a float bath is a molten metal bath to be placed in the float bath for supplying molten glass to a liquid surface of the molten metal bath, thereby forming into a glass ribbon, and includes 1 mass % or more of copper with the remainder being unavoidable impurities and tin.

A glass sheet includes a first main surface and a second main surface opposite to the first main surface in a thickness direction. X represented by the following formula (1) is −0.29<X<0.29: A×Δ.sup.1H/.sup.30Si+B×ΔNa.sub.2O+C×ΔSn+D×ΔF=X (1). F.sub.0-3 determined according to the following formula (II) is 0.02 or more: F.sub.0-3=[average fluorine concentration (wt %) by SIMS at depth of 0 to 3 μm in first main surface]×3 (II).

A glass sheet includes a first main surface and a second main surface opposite to the first main surface in a thickness direction. X represented by the following formula (1) is −0.29<X<0.29: A×Δ.sup.1H/.sup.30Si+B×ΔNa.sub.2O+C×ΔSn+D×ΔF=X (1). F.sub.0-3 determined according to the following formula (II) is 0.02 or more: F.sub.0-3=[average fluorine concentration (wt %) by SIMS at depth of 0 to 3 μm in first main surface]×3 (II).

A thin glass article is provided that has a first face, a second face, one or more edges joining the first and second faces, and a thickness between the first and second faces, where the faces and the one or more edges together form an outer surface of the thin glass article. The thin glass article has an ion-exchanged surface layer on its outer surface. The ion-exchanged surface layer is non-uniform, wherein the non-uniform ion-exchanged surface layer has an associated compressive surface stress which varies between a minimum and a maximum value over the outer surface and/or a depth of layer which varies between a minimum and a maximum value over the outer surface. A method for producing a thin glass article and a use of a thin glass article are also provided.

A glass sheet is a single glass sheet having a first surface and a second surface facing the first surface. The glass sheet has a curvature part curved in a first direction and a second direction orthogonal to the first direction. A radius of curvature in the first direction of the curvature part is 8,500 mm or less. At least a part of the first surface has been chemically strengthened in the curvature part. In the first direction within the chemically strengthened region in the curvature part, an Na amount in the first surface is smaller than the Na amount in the second surface.

Disclosed are device display screen protectors comprising a first strengthened substrate sized to cover a display screen of an electronic device, the first strengthened substrate having a central tension value in the range greater than 0 MPa and less than 20 MPa, a surface having a Knoop lateral cracking scratch threshold of at least 3 N.

The present disclosure relates to a method for producing an optical element (202), wherein a blank of transparent material is heated and/or provided and, after heating and/or after being provided between a first mold (UF) and at least one second mold (OF), is press molded to form the optical element (202), in particular on both sides, and is then sprayed with a surface treatment agent.

The present invention is based, at least in part, on the identification of a pharmaceutical container formed, at least in part, of a glass composition which exhibits a reduced propensity to delaminate, i.e., a reduced propensity to shed glass particulates. As a result, the presently claimed containers are particularly suited for storage of pharmaceutical compositions and, specifically, a pharmaceutical solution comprising a pharmaceutically active ingredient, for example, RITUXAN (rituximab), AVASTIN (Bevacizumab), LUCENTIS (Ranibizumab) or HERCEPTIN (trastuzumab).

The present invention is based, at least in part, on the identification of a pharmaceutical container formed, at least in part, of a glass composition which exhibits a reduced propensity to delaminate, i.e., a reduced propensity to shed glass particulates. As a result, the presently claimed containers are particularly suited for storage of pharmaceutical compositions and, specifically, a pharmaceutical solution comprising a pharmaceutically active ingredient, for example, HUMALOG (insulin lispro), HUMALOG MIX 75-25 (insulin lispro), HUMALOG MIX 50-50 (insulin lispro), HUMILIN 70-30 (insulin), HUMILIN N (insulin), HUMULIN R (insulin) or GEMZAR (gemcitabine).

The invention provides a composition for glass, a glass, and a preparation method and application thereof. On an oxide basis, the composition for glass contains 45-64 wt % SiO.sub.2, 16-26 wt % Al.sub.2O.sub.3, 0.1-2 wt % MgO, 10-17 wt % Na.sub.2O, 0.5-15 wt % P.sub.2O.sub.5, and optionally 0-2 wt % TiO.sub.2. The glass prepared from the composition for glass has a higher chemical resistance, a higher strain point, and a higher compressive stress and depth of compressive stress layer formed on the glass surface, and the glass has a higher Young's modulus.