Multilayer Laminated Material Thermal Stress Mitigation
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Solution Overview
Problem
Laminated materials with glass layers are prone to stress and distortion due to temperature variations, leading to mechanical failure, particularly when bonded with materials like metal or plastic, making them unsuitable for industrial applications that require resistance over a wide temperature range.
Innovation Solution
A multilayer laminated material comprising a lower substrate layer of plastic or metal, an intermediate soft layer, and a top glass layer, with the intermediate layer including a fibrous component and adhesive, which absorbs thermal expansion differences, ensuring stability and bond strength without solvent use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If glass is bonded with metal or plastic materials, then bond strength is achieved, but stress and distortion occur due to temperature variations leading to mechanical failure
Solution Approach 1:
The patent introduces an intermediate layer between the glass and the plastic substrate. This intermediate layer acts as a mediator that absorbs thermal expansion differences between the glass and plastic materials, preventing stress concentration and mechanical failure while maintaining bond strength across a wide temperature range (-40°C to +150°C).
Solution Approach 2:
The patent creates a composite laminated structure consisting of multiple layers: glass layer, intermediate layer, and plastic substrate. This composite material approach combines materials with different thermal properties to achieve both strong bonding and resistance to temperature-induced stress, solving the contradiction between bond strength and thermal stability.
2Ease of manufacture
If conventional laminated materials are used, then bonding of different materials is achieved, but stress effects lead to glass layer destruction
Solution Approach 1:
The intermediate layer is placed beforehand between the glass and plastic substrate to cushion and absorb the thermal stress that would otherwise directly affect the glass layer. This preventive measure protects the glass from stress-induced destruction while maintaining ease of manufacture through a straightforward lamination process.
3Reliability
If multilayer laminates resistant to temperature variations are produced, then reliability is improved, but production complexity and cost increase
Solution Approach 1:
The patent applies the intermediate layer specifically at critical interfaces where thermal stress concentration occurs (between glass and plastic), rather than uniformly throughout the entire structure. This localized approach achieves temperature resistance while minimizing production complexity and material usage.
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 material remains stress-free and maintains mechanical integrity even at high temperatures (up to 150°C) for extended periods, preventing cracks and chips, and allows for easy and economic production with high bond strength and environmental sustainability.
Implementation Method 1
temperature changes result in stress effects which in the end lead to a high mechanical load on the glass layer until it breaks
Data Source
AI summary
A multilayer laminated material which comprises at least one layer of glass and which has improved thermal stability is distinguished in that it comprises a lower substrate layer of a plastic, a metal or a combination of plastic and metal, an intermediate layer arranged thereon and comprising a soft material or comprising a thermoplastic, a further fibrous intermediate layer comprising plastic, which is provided with a solvent-free adhesive material, and a top layer of glass. The multilayer laminated material is suitable for the installation of glass elements in the area of the electrical, the electronics and the automotive industry and for other industrial applications.