Form Liner Backer Panel with Protrusions
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Solution Overview
Problem
Form liners used in concrete construction are susceptible to deflection under the pressure of poured concrete, leading to imperfections in the finished surface, which can result in costly rework and delays, as they lack support in unsupported areas, causing buckling and deformation.
Innovation Solution
A form liner backer panel system with protrusions that fit within the pattern of the form liner, providing structural support to prevent buckling and deflection, comprising a backer panel with a pattern of protrusions that correspond to the form liner's design, such as sawtooth or fluted patterns, to distribute and absorb the pressure of the concrete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If form liners are made thin to reduce weight for easier handling, then ease of operation is improved, but the form liners become more susceptible to deflection under concrete pressure
Solution Approach 1:
The patent combines the form liner (providing the textured surface) with a backer panel (providing structural support) into a composite assembly. The backer panel is made of rigid material with protrusions that fit into recesses of the form liner, creating a composite structure that maintains the lightweight benefit while adding the necessary strength to resist concrete pressure without deflection.
Solution Approach 2:
The support structure is segmented into discrete protrusions on the backer panel that correspond to the recesses in the form liner. This segmentation allows support to be provided at critical locations without requiring a solid backer panel, maintaining lightweight properties while providing targeted structural reinforcement where needed.
2Productivity
If form liners are made large to cover more area, then productivity is improved, but the form liners become more susceptible to deflection due to increased span between supports
Solution Approach 1:
The backer panel is designed with multiple discrete protrusions distributed across the large form liner area. Each protrusion provides localized support at critical points, enabling the form liner to span larger areas without deflection. The segmented support structure allows the form liner to maintain its large coverage area while resisting deflection through distributed reinforcement.
3Strength
If traditional support methods using wood or foam shapes are used to prevent deflection, then strength is improved, but the complexity of installation and labor requirements increase
Solution Approach 1:
The backer panel with protrusions is designed to integrate with the form liner's recesses, merging the support function into the form liner assembly itself. This eliminates the need for separate wood or foam support pieces that would require additional installation steps. The protrusions are pre-configured to fit the recesses, creating a unified component that provides both the form liner function and the structural support function in a single integrated assembly.
Solution Approach 2:
The backer panel's protrusions are designed to self-align and self-support within the recesses of the form liner. When the assembly is installed, the protrusions automatically engage with the recesses to provide support, eliminating the need for additional fastening or adjustment operations. The structure is self-supporting once installed, reducing labor requirements compared to traditional methods.
Data Source
AI summary
A structurally supportive backer panel formed to fit within the recesses of a form liner to support the form liner when casting textured surfaces into concrete. The backer panel has a series of protrusions which fit within the recesses of the form liner in order to prevent the concrete pressure from deflecting and buckling the form liner. When the wet concrete is poured into a form fitted with the backer panel and form liner, the concrete fills the form and contacts the form liner, wherein the backer panel ensures that the shape of the form liner is not affected by the pressure and weight of the concrete.