Plastic Formwork Panel with Detachable Skin for Concrete Shuttering
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Solution Overview
Problem
Existing formwork panels for concrete shutterings face issues with the longevity of the formwork skin, which often wears out due to concrete pressure, fatigue, and damage, requiring frequent replacement, and current designs may not provide adequate strength, ease of use, or visibility of connecting elements on the concrete surface.
Innovation Solution
A formwork panel with a supporting structure and formwork skin made substantially of plastics material, where the formwork skin is detachably connected to the supporting structure, allowing for easy replacement and recycling, and designed to withstand high concrete pressures without bending, using fiber-reinforced plastics and mineral particles for enhanced strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the formwork skin is made of traditional materials like plywood and attached permanently, then the structural strength is sufficient, but the formwork skin requires frequent replacement due to wear and damage
Solution Approach 1:
The patent changes the material parameters by using plastics material for both the supporting structure and formwork skin, and changes the connection parameter from permanent to releasable, enabling the formwork skin to be easily removed and replaced after concrete hardening while maintaining durability
Solution Approach 2:
The patent divides the formwork panel into two separable components: a supporting structure and a formwork skin that can be independently replaced. This segmentation allows the formwork skin to be detached and replaced without damaging the supporting structure, reducing replacement frequency and improving productivity
2Strength
If the formwork panel uses heavy traditional materials, then the strength and stability are adequate, but the panel becomes difficult to handle and assemble
Solution Approach 1:
The patent changes the material parameter from traditional heavy materials to plastics material, significantly reducing weight while maintaining structural strength through optimized design of the supporting structure with recesses and protrusions for connection
Solution Approach 2:
The patent segments the formwork panel into separable components (supporting structure and formwork skin) with standardized connection interfaces, enabling easy assembly and disassembly by simple attachment and detachment operations without requiring heavy tools or complex procedures
3Strength
If connecting elements are used to attach the formwork skin, then the connection strength is sufficient, but visible marks are left on the concrete surface
Solution Approach 1:
The patent extracts the connecting elements from the concrete-facing side and relocates them to the rear side of the formwork panel. The supporting structure includes recesses and protrusions that engage behind the formwork skin, keeping all connection elements hidden from the concrete surface and eliminating visible marks while maintaining connection strength
Data Source
AI summary
A formwork panel for concrete-work shutterings includes a supporting structure and a separate formwork skin connected to the supporting structure, characterized in that the supporting structure consists substantially of plastics material; and that the formwork skin, which is constituted by a single formwork skin element substantially of plastics material or by several formwork skin elements substantially of plastics material each, is releasably connected to the supporting structure.