Window Sash Adhesive Bonding for Static Strength
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Solution Overview
Problem
Manufacturers of window and door elements face challenges in achieving larger sizes while maintaining structural integrity, as existing solutions fail to adequately improve the statics of sash systems, leading to limitations in size and complexity in production.
Innovation Solution
A sash system with a peripherally closed profile frame and a continuous adhesive layer system, comprising a first adhesive layer between the glazing and the channel frame and a second adhesive layer between the glazing and the profile frame, enhancing statics and allowing for larger dimensions by ensuring secure attachment and shear-resistant connections between panes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the glazing is glued only in the rebate base to enable easy replacement, then ease of manufacture and maintenance is improved, but the static strength of the sash is insufficient for larger dimensions
Solution Approach 1:
The adhesive bonding is segmented into two distinct locations: the rebate base for easy glazing replacement and the rebate overlap for enhanced static strength. This segmentation allows each adhesive layer to serve a specific function, resolving the contradiction between ease of manufacture and structural strength.
Solution Approach 2:
The solution extends the bonding from a single-plane attachment at the rebate base to a two-dimensional bonding system that includes both the rebate base and the rebate overlap. This dimensional extension provides additional bonding area and structural support, enabling larger sash dimensions while maintaining ease of glazing replacement.
2Adaptability or versatility
If the sash dimensions are increased to meet market demands, then adaptability and versatility are improved, but the static strength and structural integrity deteriorate
Solution Approach 1:
The dual adhesive layer configuration is implemented in advance during manufacturing, creating a reinforced bonding structure before the sash is installed. This preliminary reinforcement of the adhesive bonding allows the sash to achieve larger dimensions while maintaining structural integrity under various loads and climatic conditions.
Solution Approach 2:
The solution uses a composite bonding system combining two adhesive layers in different locations (rebate base and rebate overlap), creating a hybrid attachment system that provides both ease of assembly and enhanced structural strength, enabling larger sash dimensions with improved stability.
3Strength
If multiple separate adhesive layers are used to improve statics, then strength is improved, but device complexity and production time increase
Solution Approach 1:
The two adhesive layers are merged into a single continuous adhesive application that spans both the rebate base and the rebate overlap. This merging approach maintains the strength benefits of dual-layer bonding while simplifying the manufacturing process, as the adhesive can be applied in one continuous operation rather than requiring separate application steps.
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 significantly improves statics by approximately 30% under differential climatic stress and wind load, enabling larger outer dimensions and simplifying production by integrating adhesive layers in a single gluing step or using a combination of wet and dry bonding techniques.
Implementation Method 1
a first adhesive layer (6) disposed in the rebate (3b) between the end face (5d) of the glazing and the profile frame (3) and by which the glazing is attached to the profile frame (3)
Data Source
Figure 1
AI summary
A sash (2) for a window or door is proposed, comprising: a fully enclosed profile frame (3) for receiving a plate-shaped glazing (5), which profile frame (3) forms a rebate (3b) with a rebate base (3c) and a rebate overlap (3d) that is substantially L-shaped in cross-section; a plate-shaped glazing (5) inserted into the profile frame (3), which glazing (5) has a full-length end face (5d) that is arranged facing the rebate base (3c), wherein the rebate overlap (3d) extends over a lateral edge (5e) of the glazing (5); a first adhesive layer (6) that is arranged in the rebate base (3c) between the end face (5e) of the glazing (5) and the profile frame (3) and by which the glazing (5) is attached to the profile frame (3);which wing (2) is characterized by the fact that a second adhesive layer (7) is arranged between the rebate overlap (3d) and the side edge (5e) of the glazing (5), which fastens the glazing (5) to the profile frame (3).