Schott Ag

Joachim Kuester

Andreas Langsdorf

Ulrich Lange

Uwe Rothhaar

Axel Ohlinger

Juergen Thuerk

Bernd Loeffelbein

Aurel Kunz

Marcus Meinefeld

Manfred Borens

Joerg Witte

Franz-Peter Eckes

Stefano Merolla

Janus Zborowski

Karsten V Westernhagen

Marcus Holla

A container for pharmaceutical and medical applications made from glass, preferably from a borosilicate glass. The container is formed in the shape of a hollow body open at both its ends with a cylindrical portion having a wall thickness tolerance of maximally &#xb1;0.2 mm. The borosilicate glass has a nominal boron content that drops by less than 40% relative to the nominal value at all of the surfaces of the container.

Pharmaceutical and medical container

The invention proposes a process for the production of a container for pharmaceutical and medical applications made from glass, preferably from a borosilicate glass, wherein the container is produced by a press-blow process where the container is initially preformed in a pressing step, by making a ram press a dispensed glass drop into a mold that is open at its bottom, and where the parison so produced is given its final form by a subsequent blowing step.

Production of a pharmaceutical container from the melt

The invention proposes a process for the production of a container made from glass, in the form of a hollow body open on both ends for pharmaceutical and medical applications, in particular in the form of a syringe barrel, where a glass drop () is dispensed from a melting unit, is placed into a mold () that is driven to rotate, and is formed by the effect of the centrifugal force, the mold being driven at a rotational speed of at least 5000 rpm, preferably approximately 50000 rpm.

Production from the melt of a container made from glass

The method provides an improved quartz glass body, especially an improved quartz glass crucible for melting non-metals, non-ferrous metals, or silicon. The quartz glass body is made by a method in which a quartz glass-water mixture is supplied to a gypsum casting mold comprising an outer part and an inner part, dried in the gypsum mold, and put under an overpressure via a system of ducts in the form of textile tubes embedded in the mold during the drying. Later a resulting green glass body is removed from the mold. At least a portion of the shaping surfaces of the inner part of the gypsum mold are surfaces of a water-impermeable substance. The method provides a cast body with a reduced tendency to crack and with a smaller open porosity.

Method and casting mold for manufacturing a quartz glass body

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Erzhausen, Germany

Joachim Kuester