Multilayer Plastic System Stress Compensation
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Solution Overview
Problem
Existing multilayer systems face challenges in achieving strong and reliable connections between layers due to mechanical stresses caused by thermal expansion differences, especially in welding methods, which can lead to weakened connections and increased risk of rupture under mechanical and thermal loads.
Innovation Solution
A method involving the use of a compensating means, such as an elastomer film, arranged between joining elements to mitigate mechanical stresses, combined with local thermal radiation or laser welding for connecting the elements, allowing for a strong and flexible multilayer system with reduced thermal loading and increased mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding is used to join layers, then connection strength is improved, but mechanical stresses increase due to thermal expansion differences
Solution Approach 1:
A compensating means is introduced as an intermediary element between the first and second joining elements. This compensating means absorbs and compensates for mechanical stresses generated during welding, preventing stress concentration at the welded seams and reducing the risk of rupture in the multilayer system.
2Strength
If adhesive bonding is used to connect layers, then connection strength is improved, but the process complexity increases due to application and curing requirements
Solution Approach 1:
The patent replaces adhesive bonding with welding as the connection method. Welding eliminates the need for adhesive application and curing processes, thereby reducing process complexity while maintaining connection strength through direct thermal joining of the joining elements.
3Strength
If multiple layers are welded together, then connection strength is improved, but the risk of rupture increases due to accumulated stresses
Solution Approach 1:
The compensating means acts as a stress-absorbing intermediary between multiple welded layers. It distributes and compensates for mechanical stresses generated during welding of each layer, preventing stress concentration and reducing the cumulative risk of rupture in multilayer systems.
Solution Approach 2:
The compensating means is pre-installed between joining elements before welding occurs. It provides beforehand cushioning by absorbing and compensating for mechanical stresses that will be generated during subsequent welding operations, preventing stress concentration and reducing rupture risk in advance.
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 method enhances the strength and reliability of connections between layers, increases flexibility by reducing mechanical stresses, and allows for efficient production of multilayer systems with improved mechanical stability and durability.
Implementation Method 1
a compensating means, for at least partially compensating for mechanical stresses, in particular taking the form of a film, preferably an elastomer film
Implementation Method 2
combining with local thermal radiation or laser welding for connecting the elements
Implementation Method 3
combining with local thermal radiation or laser welding for connecting the elements
Implementation Method 4
In the case of welding, however, the respective layers are melted, that is to say they expand on account of the development of heat
Data Source
AI summary
A method for producing a multilayer system with at least two joining elements, these being produced in particular from plastic, is disclosed. The method includes applying a compensating means, for at least partially compensating for mechanical stresses, to a first joining element, applying a second joining element to the compensating means, for joining together the first and second joining elements, firstly connecting the first joining element to the compensating means and secondly connecting the second joining element to the compensating means. A corresponding multilayer system and a corresponding use is also disclosed.