Tempered Glass Bottle Thin Wall Thickness
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Solution Overview
Problem
Glass containers are prone to splintering and scuffing, leading to potential injuries and reduced optical appeal, while increasing material thickness for enhanced resistance increases weight, making them uncomfortable to handle.
Innovation Solution
A glass container with a tempered section having a wall thickness between 1.1 mm and 2.3 mm, featuring a sandwich structure with controlled stress layers, including an outer compression stress layer and inner tensile stress layer, to enhance robustness and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the wall thickness of glass containers is increased to enhance resistance against impact and internal pressure, then the strength and reliability improve, but the weight increases making them uncomfortable to handle
Solution Approach 1:
The patent applies parameter changes by precisely controlling the wall thickness within the range of 1.1-2.3mm and the thickness relation between wall and bottom sections (2-4.5), optimizing the balance between strength and weight. The tempering process parameters (heating to 610-650°C and rapid cooling to 150-250°C within 1-4 minutes) are also optimized to achieve the desired mechanical properties without excessive material usage.
Solution Approach 2:
The patent creates a composite stress structure within the glass wall through tempering, forming an outer compression stress layer and an inner tensile stress layer. This composite stress distribution enhances the overall strength and impact resistance of the glass container while maintaining thin wall thickness and low weight.
2Weight of moving object
If the wall thickness is reduced to decrease weight, then the ease of operation improves, but the strength and resistance against failure decrease
Solution Approach 1:
The patent optimizes the wall thickness parameter to the specific range of 1.1-2.3mm, which is thin enough to reduce weight but thick enough to maintain structural integrity when combined with the tempering process. The thickness relation parameter between wall and bottom sections (2-4.5) is also controlled to ensure adequate strength distribution.
Solution Approach 2:
The tempering process creates a composite stress structure with compression layers on the outer surface and tension layers on the inner surface, which compensates for the reduced material thickness and provides enhanced strength and impact resistance despite the thin wall design.
3Ease of manufacture
If conventional glass containers are used, then the ease of manufacture is maintained, but they are prone to splintering and scuffing causing injuries and reduced optical appearance
Solution Approach 1:
The patent applies tempering by heating the glass to 610-650°C and rapidly cooling it to 150-250°C within 1-4 minutes, which fundamentally changes the physical properties of the glass to make it harder and more resistant to splintering and scuffing while maintaining manufacturing feasibility.
Solution Approach 2:
The tempering process creates a composite stress structure within the glass wall, forming outer compression layers and inner tension layers that significantly enhance the glass's resistance to splintering, chipping, and scuffing, thereby improving reliability and safety.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides improved impact resistance, reduced material usage for lighter containers, and enhanced scratch resistance, with reduced defects and improved drop test performance, while maintaining structural integrity.
Implementation Method 1
forming a tempered section at least in the wall section by thermal treatment
Implementation Method 2
a heating of the tempered section to a temperature of 610°C to 650°C and a subsequently rapid cooling to a temperature of approximately 150°C to 250 °C within a cooling duration of 1 minute to 4 minutes
Data Source
Figure 1~2
Figure 3
AI summary
The present invention describes a glass container (100), comprising a wall section (101) and a bottom section (102), wherein the wall section (101) and the bottom section (102) surround an inner volume, wherein at least the wall section (101) comprises a tempered section (103) having a wall thickness (tw) between 1,1 mm and 2,3 mm, wherein the bottom section (102) comprises a bottom tempered section, and a thickness relation between the wall thickness (tw) of the wall tempered section (103) and the bottom thickness of the bottom tempered section is between 2 and 4,5.