Glue-Free Polystyrene Insulation Panels via Butt Welding
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Solution Overview
Problem
Existing insulation boards for building thermal insulation, particularly those made from expanded polystyrene (EPS) and extruded polystyrene (XPS), face challenges in achieving good adhesion and dimensional stability between layers while minimizing water absorption and maintaining improved insulation values, especially in applications like exterior facades and flat roofs.
Innovation Solution
A method involving the simultaneous heating of parallel surfaces of a reflector plate and a cover plate to form a full-surface, glue-free connection through butt welding, with the reflector plate containing pigmented styrene polymer particles and the cover plate being extrusion-skinless and pigment-free, ensuring good adhesion and dimensional stability, and additional sealing of narrow sides for comprehensive protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive bonding is used to connect cover plate and reflector plate, then connection strength is improved, but manufacturing complexity and environmental harm increase due to chemical substances
Solution Approach 1:
The patent removes adhesive substances from the bonding process entirely, extracting the harmful chemical element from the system. Instead, it uses pure physical welding through heat and pressure to achieve connection, eliminating the need for additional adhesive materials and simplifying the manufacturing process.
Solution Approach 2:
The patent replaces chemical bonding (adhesive) with a physical welding process using heat and pressure. The heating element melts the surfaces of the cover plate and reflector plate, and the pressing element fuses them together, substituting chemical interaction with thermal-mechanical interaction.
2Strength
If thermal welding is used to connect plates, then adhesion is improved and manufacturing is simplified, but energy consumption increases due to heating requirements
Solution Approach 1:
The patent optimizes the thermal welding parameters including heating temperature, heating time, and pressing force to achieve effective bonding with minimized energy consumption. By carefully controlling these parameters, the process achieves strong adhesion while avoiding excessive energy use.
3Reliability
If reflector plate with dark pigments is used, then insulation effect is improved, but water absorption increases
Solution Approach 1:
The patent uses a composite structure where the reflector plate containing dark pigments (graphite, soot, or dye) is thermally welded to a cover plate. The cover plate acts as a protective outer layer that prevents water penetration to the pigmented reflector plate, while the reflector plate maintains its enhanced insulation properties.
4Object-affected harmful factors
If cover plate is made pigment-free, then water resistance is improved, but insulation effect is reduced compared to pigmented materials
Solution Approach 1:
The patent applies different material properties to different parts of the composite structure: the cover plate is made pigment-free for water resistance and structural protection, while the reflector plate contains dark pigments for enhanced insulation. Each layer performs its specific function optimally without compromising the other.
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
This approach results in insulation boards with minimal water absorption, enhanced insulation values due to athermanous components, and improved dimensional stability, meeting vapor diffusion requirements and maintaining a high insulating effect with a barrier top layer.
Implementation Method 1
the surfaces of which are simultaneously heated to such an extent that a firm connection between the two plates is achieved by pressing on these surfaces. The heating is carried out by butt welding and a molten film is formed on the heated surfaces.
Implementation Method 2
The heating is carried out by butt welding and a molten film is formed on the heated surfaces. The connection is glue-free and therefore full-surface.
Data Source
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AI summary
The invention relates to a method for manufacturing insulation panels, more particularly insulation panels for the thermal insulation of exterior facades, walls and other parts of buildings, from polystyrene (PS), the panels consisting of a reflector panel (1) and a cover panel (2), the manufacture of which is to be significantly simplified. An insulation panel that has minimal water absorption and at the same time an improved insulation value due to the athermanous components is to be manufactured. To achieve this, the opposing surfaces of the reflector panel (1) and the cover panel (2) are joined together by being heated and subsequently pressed together over their entire surface, thus creating a contact surface (3).