Schott Ag

Susanne Krüger

Thomas Schmiady

Thomas Seuthe

Sebastian Leukel

Jörg Hessenkemper

Andreas Langsdorf

Jochen Alkemper

Thomas Pfeiffer

Peter Nass

Ulrich Lange

Rainer Erwin Eichholz

Oliver Hochrein

Rüdiger Dietrich

Peter Naß

Arne Riecke

Julia Weißhuhn

Detlef Köpsel

Klaus Megges

André Petershans

A glass tube for pharmaceutical containers and a manufacturing process for a glass tube are provided. The glass tubes are characterized by a homogenous and low alkali leachability on the inner surface.

Glass tube for pharmaceutical containers and manufacturing process for a glass tube

A hot-formed, chemically prestressable glass article having a low percentage of crystals or crystallites, in particular a plate-shaped, chemically prestressable glass article, as well as to a method and a device for its production are provided. The glass article has a composition including the components SiO, AlO, and LiO and a content of seed formers (ZrO, SnO, and TiO) of at least 0.8 wt %, as well as at most ten crystals, including crystallites, per kilogram of glass, which have a maximum diameter greater than 1 μm and up to at most 5 μm.

Hot-formed, chemically prestressable glass articles with a low proportion of crystals and methods and devices for producing

Chemically toughened glass is provided that has a depth of compressive stress for potassium of at least 4 &#x3bc;m and at most 8 &#x3bc;m; a compressive stress at a depth of 30 &#x3bc;m due to sodium exchange of at most 200 MPa and a minimum amount of at least 90 MPa where the thickness is 0.5 mm, at least 100 MPa where the thickness is 0.55 mm, at least 110 MPa in where the thickness is 0.6 mm, at least 120 MPa where the thickness is 0.7 mm, and at least 140 MPa where the thickness is 1 mm; a ratio of sodium exchange depth, in &#x3bc;m, to the thickness, in mm, that is greater than 0.130; and a normalized integral of tensile stress that is a storable tensile stress of at least 20.6 MPa and at most 30 MPa.

Glass with preferably increased storable tensile stress, chemically toughened glass article with preferably increased storable tensile stress, method for producing such glass, and use thereof

Growing community of inventors

Mainz, Germany

Susanne Krüger