Extruded Plastic Profile with Irregular Anchoring Structure
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Solution Overview
Problem
Existing building profile strips made of plastic face challenges in creating an effective anchoring structure for malleable materials like plaster and paint, as traditional methods such as etching or punching are complex, costly, and unsuitable for complex shapes or thin sections, and existing solutions with regular depressions lack sufficient adhesion and visual appeal.
Innovation Solution
A building profile strip with an anchoring structure featuring irregularly shaped and arranged depressions, formed through partial cooling of the plastic during extrusion, which enhances adhesion by increasing surface roughness and allows for better visual integration with applied materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional etching or punching methods are used to create anchoring structures, then adhesion for malleable materials is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces mechanical post-processing methods (etching, punching, knurling) with a thermal field approach during extrusion. By cooling the extrusion die surface, the plastic material forms irregular depressions and peaks directly during manufacturing, eliminating the need for separate mechanical anchoring structure creation steps while achieving superior adhesion for plaster and paint applications.
Solution Approach 2:
The invention changes the thermal parameters of the extrusion process by introducing localized cooling to the die surface. This temperature parameter change causes the plastic material to solidify with an irregular surface topology featuring depressions and peaks, transforming the smooth surface problem into an effective anchoring structure without additional manufacturing steps.
2Strength
If manual roughening methods are used on complex-shaped surfaces, then adhesion is improved, but ease of operation and production cost worsen
Solution Approach 1:
The patent performs the surface roughening action preliminarily during the extrusion process itself. By incorporating cooling elements in the die, the irregular anchoring surface is created automatically as the material is formed, before the component is even completed. This eliminates subsequent manual roughening operations on complex-shaped surfaces, greatly improving ease of operation.
3Ease of manufacture
If regular depressions are used for anchoring, then manufacturing is simplified, but adhesion effectiveness and visual appeal deteriorate
Solution Approach 1:
The patent employs asymmetry by creating irregular, non-uniform depressions and peaks on the surface through localized cooling. This asymmetric surface topology, with varying depths, shapes, and distributions of anchor points, provides superior mechanical interlocking for malleable materials compared to regular patterns, while still being produced through a systematic cooling process during 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
The solution provides improved adhesion for malleable materials, is cost-effective to produce, and offers better visual integration with the surrounding surface, making it suitable for various applications without the limitations of traditional methods.
Implementation Method 1
The anchoring structure is produced by at least partial cooling of the building profile strip as it emerges from the extrusion die
Data Source
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AI summary
Plastic building profile strip (1) comprises an anchoring structure with irregularly arranged recesses (12). An independent claim is also included for a method for producing a building profile strip. Preferred Features: The strip is formed by extruding. The recesses are irregularly arranged in the longitudinal extension and/or in the transversal extension of the strip. Some of the recesses have undercuts. The anchoring structure has a layer thickness of 0.03-5 mm, preferably 0.1-1.5 mm.