Silver-Copper Alloy Inductor for Corrosion-Resistant Sealing
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Solution Overview
Problem
Conventional induction sealing devices in packaging machines suffer from rapid corrosion and wear due to exposure to high temperatures, high pressures, and hydrogen peroxide, leading to frequent replacements and production stoppages.
Innovation Solution
An induction sealing device with an inductor made from a silver (Ag) and copper (Cu) alloy, which provides improved conductivity and resistance to wear and corrosion, extending the device's lifespan in harsh packaging machine environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional copper inductor is used in the sealing device, then the device can perform induction heat sealing, but the inductor suffers from rapid corrosion and wear due to exposure to high temperatures, high pressures, and hydrogen peroxide
Solution Approach 1:
The patent changes the material composition parameter of the inductor from pure copper to a copper alloy containing 0.1-10% silver by weight. This compositional change enhances the inductor's resistance to corrosion and wear while maintaining its electrical conductivity, allowing it to withstand the harsh packaging machine environment including exposure to hydrogen peroxide, high temperatures, and high pressures
Solution Approach 2:
The patent employs a composite material approach by creating a copper-silver alloy that combines the high electrical conductivity of copper with the enhanced corrosion and wear resistance provided by silver. This composite material structure allows the inductor to maintain its induction heat sealing functionality while significantly improving durability in the aggressive packaging environment
2Productivity
If the sealing device is exposed to high temperatures, high pressures, and hydrogen peroxide, then the packaging process can be completed, but the inductor experiences rapid corrosion and wear requiring frequent replacements
Solution Approach 1:
By modifying the material composition to include silver in the copper alloy, the inductor's resistance to the harsh packaging environment (high temperatures, high pressures, hydrogen peroxide) is enhanced. This allows the inductor to maintain its functionality throughout the entire packaging process without degrading, eliminating the need for frequent replacements that would otherwise interrupt production
3Reliability
If the inductor is replaced frequently due to corrosion and wear, then the sealing device can maintain performance, but production stops occur regularly
Solution Approach 1:
The compositional change to a copper-silver alloy provides the inductor with sustained performance reliability in the harsh packaging environment. The silver content (0.1-10% by weight) specifically enhances corrosion and wear resistance, allowing the inductor to maintain effective induction heat sealing performance throughout extended operational periods without requiring replacement, thus eliminating production stoppages
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 silver-copper alloy inductor significantly increases the longevity and durability of the sealing device, reducing the need for frequent replacements and minimizing production disruptions caused by corrosion and wear.
Implementation Method 1
eddy currents are induced in the aluminium layer, resulting in a localized heating
Implementation Method 2
induction heat sealing inducing localized heating in a conductive material
Implementation Method 3
eddy currents are induced in the aluminium layer, resulting in a localized heating
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to an induction sealing device for heat sealing packaging material for producing sealed packages. The present invention also relates to a method of manufacturing such an induction sealing device. The device comprises at least one inductor (12) made of an alloy comprising silver (Ag) and copper (Cu).