Thermoplastic Window Profile Seal Adhesion
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Solution Overview
Problem
Existing window and door profiles with extruded seals face issues of material accumulation and poor adhesion due to fluctuations in groove opening dimensions during high extrusion speeds, leading to deformation and material inefficiency.
Innovation Solution
A window or door profile with a seal receiving groove featuring two retaining webs and an extruded seal with two connecting sections, where the first section is bonded to the outer profile wall and the second section is cohesively connected to the retaining web, ensuring complete coverage of the groove and preventing material accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high extrusion speeds are used during production, then productivity is improved, but fluctuations in groove opening dimensions occur leading to material accumulation and poor adhesion
Solution Approach 1:
The seal is divided into two distinct connecting sections: a first connecting section that bonds to the outer profile wall and a second connecting section that cohesively connects to the retaining web. This segmentation allows each section to fulfill a specific adhesion function, ensuring stable bonding even when groove dimensions fluctuate during high-speed extrusion
Solution Approach 2:
Different regions of the seal are designed with different connection characteristics. The first connecting section provides adhesion to the outer profile wall while the second connecting section provides cohesive connection to the retaining web. This local differentiation ensures that material accumulation is prevented at critical locations while maintaining overall seal integrity during high-speed production
2Reliability
If material is added to ensure complete groove coverage, then sealing performance is improved, but material accumulation occurs leading to deformation
Solution Approach 1:
The groove geometry is pre-designed with two retaining webs positioned to receive and hold the seal in place during extrusion. This preliminary structural preparation ensures that the seal is properly positioned and constrained before material accumulation can occur, allowing complete groove coverage without deformation even at high extrusion speeds
3Adaptability or versatility
If the seal is designed to accommodate groove fluctuations, then adaptability is improved, but material accumulations occur causing poor adhesion
Solution Approach 1:
The seal design incorporates parameter variations in its connecting sections to accommodate groove dimension fluctuations. The first connecting section is designed to bond to the outer profile wall while the second connecting section connects to the retaining web, with each section's geometry optimized to maintain adhesion quality despite variations in groove opening dimensions during high-speed extrusion
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 configuration ensures a stable and defined adhesion of the extruded seal, allowing for high extrusion speeds while reducing material usage and preventing deformation, thus enhancing the sealing performance and production efficiency.
Implementation Method 1
the first connecting section being bonded to an outer profile wall directed toward the profile outside
Implementation Method 2
the second connecting section being cohesively connected to the side of the retaining bar that faces the other retaining bar
Data Source
Figure 1~2
AI summary
The present invention relates to a window or door profile (1) made of thermoplastic material with an extruded seal (3), wherein the window or door profile (1) comprises a seal receiving groove (4) with two opposing retaining webs (5, 5') for holding a replacement seal, and wherein the extruded seal (2) comprises two connecting sections (8, 8') for the material-bonded connection of the extruded seal (2) to the window or door profile (1) and a sealing head (9), and the extruded seal (2) completely covers the seal receiving groove (4), wherein the first connecting section (8) is materially bonded to a profile outer wall (6) facing the profile outer side (7), and wherein the second connecting section (8') is materially bonded to the side of the retaining web (5') that faces the other retaining web (5).