Embossed Spatula Profile for Plaster Adhesion
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Solution Overview
Problem
Filler profiles made of plastic and paper surfaces face challenges with adhesion of filler compounds like plaster, leading to unreliable clawing and adhesion issues on both sides of the spatula profile.
Innovation Solution
A spatula profile with an embossed structure, preferably linear, is created by pressure forming to enhance filler adhesion, featuring higher material density and alignment for improved clawing, which can include grooves and non-linear elements, and periodic repetition for homogeneous adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If filler profiles are made of plastic or paper surfaces, then weight and cost are reduced compared to metal, but adhesion of filler materials like plaster deteriorates
Solution Approach 1:
The patent applies local quality by creating an embossed structure only on specific surfaces of the filler profile where adhesion is needed. The embossed structure consists of linear elements with varying depths and patterns that are strategically placed on the plastic or paper surface to provide mechanical interlocking for filler materials, while the rest of the profile maintains its lightweight plastic or paper construction.
Solution Approach 2:
The patent creates a composite surface structure by combining the base plastic or paper material with an embossed topography. This composite approach allows the profile to maintain the advantages of plastic/paper (weight, cost) while adding a surface structure that provides metal-like adhesion properties through mechanical interlocking with filler materials.
2Reliability
If an embossed structure is created by extrusion, then surface structure for adhesion is provided, but material density decreases and stiffness is reduced
Solution Approach 1:
The patent segments the profile into two distinct parts: a dense base material that provides structural strength and stiffness, and an embossed surface layer that provides adhesion. The embossed structure is created as a surface feature rather than a through-extrusion, allowing the base material to remain solid and stiff while the surface provides mechanical interlocking through the embossed pattern.
Solution Approach 2:
The patent changes the surface parameters (topography, roughness, linear element depth) of the filler profile through embossing without changing the bulk material parameters. This allows the surface to be optimized for adhesion while the bulk material maintains its density and stiffness properties.
3Reliability
If linear embossed elements are aligned with gravity force, then adhesion is improved in mounting orientation, but adhesion in other directions may be reduced
Solution Approach 1:
The patent employs asymmetric embossed patterns where linear elements are oriented at specific angles relative to the profile's longitudinal axis. This asymmetric arrangement creates directional adhesion characteristics that optimize performance in the primary mounting orientation (resisting gravity), while the varying angles and depths provide secondary adhesion in other directions.
Solution Approach 2:
The embossed linear elements incorporate curved or angled geometries rather than purely straight lines. This curvature allows the structure to engage filler materials from multiple angles, providing both optimized adhesion in the gravity direction and adequate adhesion in other orientations through the angled surfaces.
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 embossed structure significantly improves the adhesion and clawing of filler compounds on the spatula profile surfaces, providing better support and engagement for the filler, especially at vertical corners and ensuring reliable adhesion across the longitudinal extension.
Implementation Method 1
By embossing a structure into a surface of the filler profile, the adhesion of filler to this surface can be improved
Implementation Method 2
The structure can be embossed into the surface by pressure forming, in particular by chipless pressing into the surface. The higher material density can contribute to stiffening the spatula profile
Data Source
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AI summary
In the case of a spatula profile, in particular an edge angle or a finishing profile, which preferably comprises paper and/or plastic and extends along a longitudinal direction, at least one surface of the spatula profile has an embossed structure which is at least partially linear.