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Fused quartz container having low levels of surface defects

A container and inner surface technology, applied in the field of fused silica glass containers

Active Publication Date: 2019-09-03
MOMENTIVE PERFORMANCE MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Although particle removal techniques (such as U.S. Patent No. 6,165,281) and complex inspection devices and quality procedures have been combined in an attempt to limit the problem, there are still unresolved problems of manufacturing packaging containers that are substantially free of redeposited glass, especially is for the smallest particle in the range of less than 200 microns

Method used

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  • Fused quartz container having low levels of surface defects
  • Fused quartz container having low levels of surface defects
  • Fused quartz container having low levels of surface defects

Examples

Experimental program
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Effect test

Embodiment

[0074] Those skilled in the art prepare fused silica glass articles in a conventional manner, without including any steps outlined herein to avoid redeposition of glass components. Figure 2 shows an exemplary area of ​​the article, which shows four adhered glass particles with a length greater than 10 μm. Capture about 0.0045cm in the frame of the picture 2 In the case of, this would represent approximately 900 particles per square centimeter. This is compared to an article prepared in combination with the steps outlined herein (where no such particles are seen (shown in Figure 3)). A series of Type I borosilicate vials were assembled, representing the industry benchmark for larger vials (20ml and 50ml). These are made by three different manufacturers located in the United States and Europe. These are all inspected "at the time of manufacture" and none of them receive ammonium or other post-processing treatments. Although the details of the manufacturing operation are propri...

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Abstract

A quartz glass container is shown and described herein. The quartz glass container exhibits a low concentration of surface defects on an inner surface of the container. In aspects hereof, the container may have a surface defect density of 50 or fewer surface defects per square centimeter within a 1 cm band centered 1 cm from the base of the container.

Description

[0001] Cross references to related applications [0002] This application claims the priority and rights of U.S. Provisional Application No. 62 / 446,017 filed on January 13, 2017, the entire disclosure of which is incorporated herein by reference. Technical field [0003] The invention relates to a fused quartz glass container. In particular, a fused silica glass container is provided with a low concentration of surface features, such as those that may be caused by redeposition of glass or glass components during the manufacturing process. A method of manufacturing such a container is also shown and described. Background technique [0004] Glass materials are often used for drug packaging. There has been a recent trend in the pharmaceutical market to increasingly use biological (protein-based) pharmaceuticals that are more "sensitive" than traditional pharmaceuticals. For these types of medicaments, the subject of medicament / container interaction has become increasingly important ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/06A61J1/06B65D1/09C03B20/00A61J1/14
CPCA61J1/065C03C3/06C03B23/092C03B23/11C03B2201/02C03C2201/02C03C2203/10C03C2204/08A61J1/1468A61B5/154A61L31/028A61M5/24A61M5/3129C03C2203/52Y10T428/13Y10T428/131
Inventor 本·高蒂尔罗伯特·科赫托德·斯普林格大卫·许格洛丽亚娜·沃里奥
Owner MOMENTIVE PERFORMANCE MATERIALS INC