Elevated-Region Glass Containers for Scratch and Breakage Resistance
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Solution Overview
Problem
Existing glass containers for pharmaceutical packaging face issues such as breakage during high-speed processing, leading to production disruptions, contamination from scratches and coatings, and the need for complex multilayer coatings that are costly and prone to contamination.
Innovation Solution
A glass container design with a wall surface featuring elevated regions of a different glass composition, which enhances scratch resistance and reduces breakage, allowing for easier optical inspection and compatibility with high-temperature treatments without a multilayer coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If glass containers are used for pharmaceutical packaging, then safety and containment are ensured, but breakage during high-speed processing occurs leading to production disruptions
Solution Approach 1:
The glass container incorporates a multilayer wall structure with an inner glass layer, an intermediate layer comprising glass particles in a glass matrix, and an outer glass layer. This composite structure enhances mechanical strength and breakage resistance while maintaining pharmaceutical compatibility, allowing high-speed processing without increasing disruption risk.
Solution Approach 2:
The intermediate layer is specifically positioned at the wall region subject to mechanical stress during processing. By concentrating the reinforced glass particle composite in this critical zone, the container achieves enhanced local strength where needed most, preventing breakage during high-speed filling line operations without compromising overall container integrity.
2Strength
If multilayer coatings are applied to container surface, then scratch resistance and coating integrity are improved, but contamination risk and manufacturing complexity increase
Solution Approach 1:
The wall structure itself functions as a composite material system where the intermediate layer of glass particles embedded in a glass matrix provides scratch resistance and mechanical reinforcement. This eliminates the need for separate organic multilayer coatings, reducing contamination risk while maintaining surface durability through the inherently stable glass-based composite structure.
Data Source
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AI summary
The invention refers to a hollow body (100), comprising a wall (102) which at least partially surrounds an interior volume (101) of the hollow body (100); wherein the wall (102) a) comprises a layer of glass (104), comprising a first glass composition, b) comprises a base surface (106), and c) has a wall surface (103); wherein the wall surface (103) comprises a. at least one surface region (105), in which the base surface (106) is at least partially superimposed by at least one elevated region (107), and b. at least one contact region (120), which extends along a contact range (118) of a height (117) of the hollow body (100); wherein the at least one elevated region (107) comprises a further glass composition; wherein throughout the contact range (118) an exterior diameter (119) of the hollow body (100) has a maximum; wherein the at least one surface region (!05) is at least partially positioned in the at least one contact region (120). Further, the invention refers to a process (500) for making an item; to a hollow body (100), obtainable by that process (500); to a closed hollow body (400); to a process (700) for packaging a pharmaceutical composition (401); to a closed hollow body (400), obtainable by this process (700); to a use of a hollow body (100) for packaging a pharmaceutical composition (401); and to a use of a plurality of glass particles.