Sealing Assembly for Window Frames with Segmented Adhesive Strips
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Solution Overview
Problem
Existing sealing arrangements for built-in components like windows and doors in building walls face challenges with large expansion movements due to differing expansion behaviors of adjacent materials, leading to inadequate airtightness, windproofing, and vapor diffusion control, with no known practical, inexpensive, or permanent solution.
Innovation Solution
A sealing arrangement with a profile strip that separates the assembly and sealing functions, where the profile strip is firmly connected to the building wall through a connection device, allowing for increased adhesive force and independent movement from the built-in part, using a specialized sealing device with high elasticity and elongation at break to accommodate large expansion movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single adhesive strip is used to both assemble and seal the profile strip to the built-in part, then the device complexity is reduced, but the reliability of sealing under large expansion movements deteriorates
Solution Approach 1:
The adhesive connection is divided into two separate functional strips: a first adhesive strip for assembly connection and a second adhesive strip for sealing connection. This segmentation allows each strip to be optimized for its specific function, with the sealing strip having high elasticity and elongation properties to handle expansion movements while the assembly strip provides initial positioning and structural support.
Solution Approach 2:
Different regions of the joint have different functional requirements. The assembly region requires strong initial adhesion and structural support, while the sealing region requires high elasticity and movement accommodation. By applying different adhesive strips with different properties to different regions, each region receives the appropriate local quality needed for its function.
2Adaptability or versatility
If a foam adhesive tape with high elasticity is used to accommodate expansion movements, then the adaptability to movement increases, but the strength of adhesive connection deteriorates
Solution Approach 1:
The adhesive connection is segmented into two strips with different properties. The first adhesive strip provides strong adhesive strength for structural support, while the second adhesive strip with high elasticity provides movement compensation. This segmentation resolves the contradiction by assigning different strength-elasticity requirements to different parts of the connection system.
Solution Approach 2:
The solution uses composite adhesive materials: a first adhesive strip with high strength properties and a second adhesive strip with high elasticity and elongation properties. This composite approach combines materials with complementary properties to simultaneously achieve both strong adhesion and movement accommodation in the overall connection system.
3Stability of the object's composition
If the profile strip is firmly connected to the built-in part, then the assembly stability improves, but the ability to accommodate expansion movements deteriorates
Solution Approach 1:
The connection system is segmented into two functional layers: an assembly connection layer that provides stable positioning and structural support, and a sealing connection layer that provides elastic movement accommodation. This segmentation allows the profile strip to be both stably assembled and able to accommodate expansion movements through the differential behavior of the two connection layers.
Solution Approach 2:
The connection system transitions from a static, rigid connection to a dynamic, multi-layered connection that can adapt to movement. The first adhesive strip provides initial stable positioning, while the second elastic adhesive strip allows dynamic adjustment and movement accommodation, creating a connection that is both stable and adaptable.
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 provides a permanent, airtight seal that remains effective even with significant 3D expansion and compression movements, is visually appealing by minimizing visible external components, and is cost-effective with low material and processing efforts, ensuring compliance with standards for air, wind, and vapor tightness.
Implementation Method 1
a first adhesive strip (27) which, in the installed position, forms an assembly connection to the built-in part (10) with a holding connection
Implementation Method 2
a second adhesive strip (26) which, in the installed position, forms a sealing connection to the built-in part (10) with a permanent sealing material
Implementation Method 3
the elastic sealing material has an increased elongation at break and/or a reduced Shore hardness
Implementation Method 4
the permanently plastic sealing compound should be capable of reversible changes in shape even after a long time
Data Source
Figure 1
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AI summary
The invention relates to a sealing arrangement on a built-in component (10), in particular a door or window frame component, which can be attached to or is attached to a building wall (11), comprising a profile strip (17) having a connection device on the building wall side, and a mounting and sealing device for sealingly fixing the profile strip (17) to the built-in component (10), wherein the mounting and sealing device is arranged in the joint (28) between the profile strip (17) and the built-in component (10) and is sealedly attached to the profile strip (17) and the built-in component (10), wherein, according to the invention, the mounting and sealing device is formed by a mounting device (27) and a sealing device (26) which are arranged side by side in the joint (28).each is connected to the profile strip (17) and the installation part (10) and has different properties and/or consists of different materials and/or is formed differently.