Glass container with an improved bottom geometry
AssigneeSchott AG
InventorsAndreas Langsdorf, Peter Thomas, Florian Maurer, Hanspeter Kummer, Fatih Mutlu
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Abstract
A glass container for packaging a pharmaceutical composition including a glass tube with a first end and a second end, the glass tube having a wall thickness dw and an outer diameter dc, a glass bottom with an outer area, the glass bottom closes the glass tube at the first end, and a curved glass heel extending from the outer area of the glass bottom to the first end of the glass tube. The curved glass heel is defined by an outer radius ro, an inner radius ri, and a thickness of the glass dh in the curved glass heel and: [100×(dh3×ri)/(dw ×dc2)]+(4.4 mm2/dc)>0.55 mm.
Claims20
A glass container for packaging a pharmaceutical composition, comprising:
- a glass tube with a first end and a second end, the glass tube having a wall thickness (dw) and an outer diameter (dc);
- a glass bottom with an outer area, the glass bottom closes the glass tube at the first end;
- and
- a curved glass heel extending from the outer area of the glass bottom to the first end of the glass tube, wherein the curved glass heel is defined by an outer radius (ro), an inner radius (ri), and a thickness of the glass (dh) in the curved glass heel that differs from the wall thickness and wherein:
- [100×(dh3×ri)/(dw×dc2)]+(4.4 mm2/dc)>0.55 mm.
A method for the preparation of a closed glass container, comprising:
- providing a glass container for packaging a pharmaceutical composition, the glass container including an interior volume (Vi), a glass tube with a first end and a second end, the glass tube having a wall thickness (dw) and an outer diameter (dc), a glass bottom with an outer area, the glass bottom closes the glass tube at the first end, a curved glass heel extending from the outer area of the glass bottom to the first end of the glass tube, wherein the curved glass heel is defined by an outer radius (ro), an inner radius (ri), and a thickness of the glass (dh) in the curved glass heel that differs from the wall thickness and wherein:
- [100×(dh3×ri)/(dw×dc2)]+(4.4 mm2/dc)>0.55 mm;
- inserting the pharmaceutical composition into the interior volume Vi of the glass container;
- and
- closing the glass container.
A glass container for packaging a pharmaceutical composition, comprising:
- a glass tube with a first end and a second end;
- a glass bottom with an outer area, the glass bottom closes the glass tube at the first end;
- and
- a curved glass heel extending from the outer area of the glass bottom to the first end of the glass tube,
- wherein the curved glass heel is defined by an outer radius (ro), an inner radius (ri), and a thickness of the glass (dh) in the curved glass heel,
- wherein:
- ri+dh−ro>0.1 mm.
Dependencies are inferred from the claim text.