US 12,290,490 B2
Vial with optimized neck for improved side compression performance
Andreas Langsdorf, Ingelheim (DE); Florian Maurer, Griesheim (DE); Peter Thomas, Koblenz (DE); Alexander Humbertjean, Bad Krozingen (DE); Tobias Wetzel, Sölden (DE); and Hanspeter Kummer, Müllheim (DE)
Assigned to SCHOTT PHARMA AG & CO. KGAA, Mainz (DE)
Filed by SCHOTT PHARMA AG & CO. KGAA, Mainz (DE)
Filed on Jul. 6, 2020, as Appl. No. 16/920,802.
Claims priority of application No. 19184541 (EP), filed on Jul. 4, 2019.
Prior Publication US 2021/0000690 A1, Jan. 7, 2021
Int. Cl. A61J 1/14 (2023.01); C03C 17/00 (2006.01); C03C 17/30 (2006.01)
CPC A61J 1/1468 (2015.05) [A61J 1/1412 (2013.01); C03C 17/005 (2013.01); C03C 17/30 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A glass container, comprising:
a glass tube made of a glass, the glass tube having a first end, a second end, and a longitudinal axis Ltube therebetween, the glass tube has, in a direction from the first end to the second end, a top region, a junction region, a neck region, a shoulder region, and a body region, wherein the top region is at the first end and has an outer diameter (dt), the neck region has an outer diameter (dn) with dn<dt and the glass in the neck region has a minimum thickness (ln), and the body region extends to the second end, wherein the body region has a glass thickness (lb) and an outer diameter (db) with db>dt; and
a glass bottom closing the glass tube at the second end; and
an interior volume between 1 ml and 150 ml,
wherein the junction region has an outer surface and a substantially circular arc-shaped area, the substantially circular arc-shaped area being where the junction region merges into the neck region, the substantially circular arc-shaped area having an outer radius (rs),
wherein 2×[ln/lb]×rs≥2.17 mm,
wherein the neck region has a mechanical resistance against diametral compression according to a neck squeeze test of at least 1100 N, and
wherein the mechanical resistance against diametral compression is determined by a diametral load strength testing adapted from DIN EN ISO 8113 where a compressive force is applied in diametral direction at two opposing positions of an outer surface of the neck region using two opposing, uniaxial concave steel surfaces having a radius of the concavity that is 25% larger than a radius of the outer diameter of the neck region so that the compressive force is applied along two opposing lines, wherein the concave steel surfaces have a width that is shorter than a height of the neck region, and wherein the compressive force is increased at a constant load rate of 2000 N/min until breakage using a universal testing is detected as a sudden drop in the force-time diagram F(t),
wherein the glass is selected from the group consisting of a borosilicate glass, an aluminosilicate glass, a soda lime glass, and a fused silica; or a combination of at least two thereof,
wherein rs is in the range from 0.5 to 1.0 mm, and
lb is in range of from 0.4 to 2.5 mm.