Glass container comprising a glass bottom with improved properties

US12076723B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Alexander Humbertjean · Bad Krozingen, DE
• Tobias Wetzel · Sölden, DE
• Robert Frost · Eggersriet, CH
• Jens Ulrich Thomas · Mainz, DE
• Frank-Thomas Lentes · Bingen, DE
• Andreas Langsdorf · Ingelheim am Rhein, DE
• Doris Moseler · Budenheim, DE
• Günter Weidmann · Stuttgart, DE
• Roman Huhn · Sankt Gallen, CH

Key dates

• Filing date: Dec 18, 2020
• Grant date: Sep 3, 2024
• Expiry date: Feb 10, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01L2300/0851
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A glass container is provided that includes a tube, a circular bottom, and a longitudinal axis. A curved glass heel extends from an outer end the bottom to the first end of the tube. The outer surface has a topography defined by a function ĥ(x) that is an azimuthal average of a distance between a contact plane and the outer surface at any given position located on a circle having the centre and the radius |x|. The values ĥ for ĥ(x) are determined for a plurality of circles the radius of which increases stepwise by 500 μm starting with a circle around the centre having a radius of 500 μm. The values ĥ are determined in a range from x=−0.4×d2/2 to x=+0.4×d2/2, d2 having a size such that at least 4 values ĥ are determined and can be fitted with a curvature function