US 12,391,425 B2
Glass tube for pharmaceutical containers and process for the production of a glass tube
Jonas Zeitler, Selb (DE); Carsten Hamann, Konnersreuth (DE); Franz Völkl, Friedenfels (DE); Oliver Zettl, Mitterteich (DE); and Patrick Braun, Nagel (DE)
Assigned to Schott AG, Mainz (DE)
Filed by SCHOTT AG, Mainz (DE)
Filed on Dec. 22, 2022, as Appl. No. 18/145,817.
Claims priority of application No. 21216969 (EP), filed on Dec. 22, 2021.
Prior Publication US 2023/0192350 A1, Jun. 22, 2023
Int. Cl. C03C 3/091 (2006.01); B65D 1/40 (2006.01); C03C 3/078 (2006.01)
CPC B65D 1/40 (2013.01) [C03C 3/078 (2013.01); C03C 3/091 (2013.01); B65D 2575/52 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A glass tube for pharmaceutical containers, comprising:
an inner surface at an inner diameter and an outer surface with an outer diameter;
a first end defining a first closed end;
a second end defining a second closed end;
a first location 400 mm from the first end;
a first intermediate location 15 mm from the first end; and
a ventilation hole at a first vicinity, the first vicinity being between the first intermediate location and the first location,
wherein the inner surface in the first vicinity has measurable first ToF-SIMS signals, the first ToF-SIMS signals including an Na2F+ signal and an 30Si+ signal,
wherein the inner surface has an area in the first vicinity that is 36 mm2 or less,
wherein the first vicinity has a ratio of an integrated Na2F+ signal to an integrated 30Si+ signal of at least 0.10, and
wherein the integrated Na2F+ signal and the integrated 30Si+ signal are integrated over a depth of 100 nm.