Schott Ag

Stephan Tratzky

Rainer Erwin Eichholz

Christof Kass

Peter Nass

Denise Trapp

Ulrich Lange

Michael Schwall

Volker Trinks

Erhard Dick

Gottfried Haas

Reinhard Maennl

Reinhard Männl

Markus Ollig

Arne Riecke

Michael Siller

Matthias Müller

Franz Jaeger

Heinz Dotzler

Joachim Pfeifer

Leonid Schulz

Wolfgang Zettl

Johann Collignon

Reinhard Gmeiner

Wassilis Bagaris

Rainer Schmid

Sebastian Stark

An apparatus for forming glass tubes is provided. The apparatus includes a Danner-pipe, a heating device, and a heating chamber having the Danner-pipe and the heating device arranged therein. The Danner-pipe is inclined with respect to a horizontal plane by a Danner-angle. The heating device is inclined with respect to the horizontal plane by a heating-angle. The Danner-angle and/or the heating angle are in a range of 1° to 45°.

Apparatus for forming glass tubes, a heating chamber and a process for the manufacture of an apparatus for forming glass tubes

A method for producing glass vials, in particular pharmaceutical vials or pharmaceutical ampoules, from a glass tube is provided, the method including the following steps: (a) rotating the glass tube about a longitudinal axis thereof; (b) locally heating the glass tube from one side by means of at least one burner to at least the softening temperature of the glass; (c) reducing the diameter by pressing at least one forming body laterally against the heated region; and (d) separating the glass tube by means of a burner. A glass vial produced in such a way releases a reduced amount of alkali in accordance with ISO 4802 and has a decreased delamination tendency. Furthermore, in the hot-formed peripheral region, the alkali content is only slightly reduced when compared with the alkali content in the glass interior.

Method of producing glass vials

A pharmaceutical packaging is provided including a glass, comprising at least the following components (given in mol % on oxide basis): SiO: 5 9-84, AlO: 7-18.5, CaO: 1-25, SrO: 0-6.5, BaO: 0-5, ZrO: 0-3, TiO: 0-5, BO: 0-1, wherein the ratio (CaO+SrO+BaO)/AlO&#x3c;2.8, wherein the ratio (CaO+SrO+BaO)/SiO&#x2264;0.39, wherein the hydrolytic resistance according to DIN ISO 720 is class HGA 1, and wherein the glass, apart from unavoidable contaminations, is free of alkali oxides and magnesium oxides.

Pharmaceutical packaging comprising a chemically resistant glass

A zirconium-free neutral glass is provided that finds use in the pharmaceutical sector. The glass has a combination of alkali metal oxides of sodium, potassium and optionally lithium, and a controlled amount of aluminum oxide, which provides a zirconium-free and low-boron neutral glass having good hydrolytic stability, good acid and alkali stability and good devitrification properties. The glass includes the following components in % by weight: 

Low-boron zirconium-free neutral glass having an optimized alkali metal ratio

Borosilicate glasses, preferably for use in the pharmaceutical sector, are provided. The borosilicate glasses are outstandingly suitable for the use as pharmaceutical primary packaging, such as phials or ampoules, since the aqueous or water-containing medicaments kept in the containers do not attack the glass significantly, and so the glass releases no, or only few, ions. The borosilicate glasses have the following composition in % by weight or consist thereof: 

Borosilicate glass having improved hydrolytic resistance for preferred use in the pharmaceutical sector

The glass-metal bond for a tube collector includes a glass tube and metal part bonded to the glass tube. In order to match the thermal expansion properties, the glass tube has the following composition: SiO, 73-77 wt. %; BO, 6-&#x3c;8 wt. %; AlO, 6-6.5 wt. %; NaO, 5.5-7 wt. %; KO, 1-3 wt. %; CaO, 0.5-3.2 wt. %; MgO, 0-2 wt. %; FeO, 50-150 ppm; and TiO0-&#x3c;100 ppm. The ratio of the sum of the alkaline-earth metal oxides (in mol %) to the sum of the alkali metal oxides (in mol %) is &#x2266;0.6. The metal part is preferably made of metal material no. 1.3981 according to DIN 17745. The glass composition itself is also part of the invention.

Glass composition formulated for a glass-metal bond of a tube collector and glass-metal bond made with glass of said glass composition

A process for producing a wipe-proof anti-reflection layer on a borosilicate glass body is described, in which the borosilicate glass body is coated with a coating solution having a composition of 1-6% by weight of HCl, 0.5-7% by weight of SiOsol (solids content), 0.5-5% by weight of HO, and 85-98% by weight of a readily volatile water-soluble organic solvent. The borosilicate glass body that is to be coated contains, in % by weight based on oxide content: 63-76 of SiO, &#x3e;11-20 of BO, 1-9 of AlO, 3-12 of alkali metal oxide(s), 0-10 of alkaline earth metal oxide(s), 0-2 of ZnO, 0-5 of TiO, 0-1 of ZrO, 0-1 of NbO, and 0-1 of WO.

Process for producing a wipe-proof antireflection layer on a borosilicate glass body

In the method of making an adherent and wipe-resistant porous SiO-containing antireflection coating on a borosilicate glass body a coating solution containing from 1.0 to 6.0 wt. % of HCl, from 0.5 to 7.0 wt. % of a SiOsol based on solids content, from 0.5 to 5.0 wt. % of water, and from 85 to 98 wt. % of at least one volatile water-soluble organic solvent, is used to form an antireflection coating on the glass body. A glass body, on which the foregoing coating can be provided with good adherence and wipe resistance properties, is made of borosilicate glass having a composition, in percent by weight based on oxide content, of SiO, 70 to 75; BO, 8 to 11; AlO, 5 to 9; alkali metal oxides, 7 to 12; and alkaline earth metal oxides, 0 to 10.

Method of making a wipe-resistant antireflection coating on a borosilicate glass body and coating solution for use in said method

The invention relates to a method for the interior metal-coating of glass tubes, with the metal-coated surface being a cylindrical shell. In accordance with the invention such a method comprises the following process steps:

Selective coating of the interior of glass tubes with a metallic mirror surface

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Neustadt an der Waldnaab, Germany

Stephan Tratzky