Corrugated Construction Element Resolving Drywall Waviness
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Solution Overview
Problem
Existing drywall and gypsum ceiling construction elements face issues such as waviness, twisting, bending, and reduced strength due to the use of thin metal sheets, which are exacerbated by the knurling process, leading to quality problems like corrosion and reduced screw retention.
Innovation Solution
A corrugated construction element with an array of angular corrugations extending across its surface in a non-parallel direction to the principal axis, formed by passing a sheet material between rollers with specific corrugation regions, increasing the thickness and providing improved screw retention and twist resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If thin metal sheets are used to reduce weight, then weight is reduced, but strength and stability deteriorate due to waviness and twisting
Solution Approach 1:
The patent applies corrugations (curved surface features) to the metal sheet to transform it from a flat, weak structure to a corrugated, stronger structure. The corrugations create a three-dimensional profile that increases moment of inertia and resistance to bending and twisting, while maintaining the thinness of the base material for weight efficiency.
2Reliability
If knurling process is applied to increase screw retention, then screw retention is improved, but corrosion resistance deteriorates due to cracks in protective coating
Solution Approach 1:
The patent replaces the knurling process with a corrugation process that forms smooth, continuous curved surfaces rather than dimpled surfaces. This corrugation method increases screw retention through the geometric profile of the corrugations while avoiding the cracking of protective coatings that occurs with knurling, thereby maintaining corrosion resistance.
3Strength
If corrugations are added to increase strength, then strength is improved, but device complexity increases
Solution Approach 1:
The patent uses corrugations (curved surface features) to increase strength while maintaining relatively simple manufacturing. The corrugated profile is formed through standard rolling or forming processes that create repeating curved patterns, adding structural strength without requiring complex multi-component assemblies or sophisticated manufacturing equipment.
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 corrugated construction element effectively reduces deflection under load, enhances screw retention, and increases strength, stability, and load-bearing capacity, while minimizing issues like waviness and twisting.
Implementation Method 1
these locally provided beads do not increase the moment of inertia that contributes to the strength and stability of the profiles
Implementation Method 2
The corrugated profile is formed by bending sheet material into desired shapes
Implementation Method 3
In order to increase the screw retention, a section may be formed from a metal sheet which is fully knurled or partially knurled
Data Source
AI summary
A corrugated construction element (100) for drywall and ceiling construction is disclosed. The corrugated construction element (100) comprises a base profile (101) connected to at least one leg profile (102a) or (102b). The base profile (101) and/or at least one leg profile (102a) or (102b) comprise an array of angular corrugations (110) extending across their surface in a non-parallel direction to the principal axis L of the corrugated construction element (100). The disclosure also relates to an apparatus and a method for forming a corrugated profile (770).