Fiber Cement Billboard with Acrylate Coating for UV Curing
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Solution Overview
Problem
Conventional self-supporting billboards are either flammable or, when made with non-combustible materials, become composite bodies that are not classified as non-combustible due to the adhesive layers, and they also pose acoustic and moisture issues, especially in damp environments.
Innovation Solution
A self-supporting advertising panel made of fiber cement with an acrylate coating as a carrier layer for ultraviolet-curing acrylic-based inks, eliminating the need for laminated films and ensuring non-combustibility through a thin, abrasion-resistant bond without additional binders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a non-combustible material such as metal or glass is used for the self-supporting panel, then the panel's non-combustibility is improved, but the composite body becomes non-combustible only due to the adhesive layer and printed film, failing to meet fire protection requirements
Solution Approach 1:
The patent removes the laminated printed film and adhesive layer from the structure, keeping only the fiber cement panel. The printing is applied directly to the panel surface using acrylic-based inks that cure under UV light, eliminating the need for additional combustible layers while maintaining non-combustibility.
Solution Approach 2:
The patent introduces an acrylate coating as an intermediary layer between the fiber cement panel and the printing inks. This coating provides a suitable surface for ink adhesion while maintaining the non-combustible properties of the overall structure, as the coating itself is non-combustible and thin.
2Manufacturing precision
If a laminated printed film is applied to a non-combustible panel, then the printing quality is improved, but the composite body fails to meet non-combustible fire protection requirements
Solution Approach 1:
The patent eliminates the laminated printed film entirely, applying printing inks directly to the fiber cement panel surface. This removes the combustible layer that compromised fire safety while maintaining printing quality through direct application and UV curing.
Solution Approach 2:
The patent changes the physical state and composition of the printing medium from traditional laminated films to acrylic-based inks that cure under UV light. This parameter change allows direct application to the panel surface, creating a permanent bond without additional combustible layers.
3Strength
If larger billboards with load-bearing panels made of metal or glass are used, then the structural strength is improved, but the building acoustics deteriorate
Solution Approach 1:
The patent changes the material parameter from metal or glass to fiber cement, which provides sufficient structural strength for billboard applications while having superior acoustic properties. The fiber cement material absorbs sound better than metal or glass, improving building acoustics.
4Object-affected harmful factors
If fiber cement is used for the self-supporting panel, then the building acoustics and moisture resistance are improved, but the adhesion of printing inks deteriorates due to insufficient bonding to cement material
Solution Approach 1:
The patent introduces an acrylate coating as an intermediary layer between the fiber cement panel and the printing inks. This coating provides a chemically active surface that enhances ink adhesion while being compatible with the fiber cement substrate, solving the bonding issue without compromising moisture resistance.
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 a non-combustible, acoustically favorable, and moisture-resistant billboard with high image quality and detailed printing, meeting fire protection criteria while maintaining advantageous building acoustics and preventing stress cracks.
Implementation Method 1
acrylic-based printing inks, which harden under ultraviolet light, are used ensures a permanent, abrasion-resistant bond between the acrylate coating of the fiber cement board and the printing inks
Data Source
Figure 1
AI summary
A description is given of a billboard having a self-supporting, incombustible plate (1) which has a base layer for printing inks that cure under ultraviolet light. In order to obtain incombustible billboard, it is proposed that the plate (1) be produced from fibre cement and be provided with a directly applied acrylate coating (2), containing colour pigments if desired, as a base layer for acrylic-based printing inks.