Fluorescent Wood Stain for Grain Visibility in Darkness
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Solution Overview
Problem
Existing wood staining techniques primarily use monochromatic stains, limiting the enhancement of wood grain patterns and failing to visualize grain features in both daylight and darkness, while also relying on traditional processes that do not effectively address the natural variations and oxidation of wood.
Innovation Solution
A process involving the use of a stain formulation containing multiple fluorescent dyes or pigments, combined with pre-treatment methods like bleaching and embossing, to enhance the wood grain pattern, making it visible in both visible and invisible light through the absorption and emission of electromagnetic radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional monochromatic stains are used, then the staining process is simple and cost-effective, but the wood grain pattern enhancement is limited and cannot visualize grain features in both daylight and darkness
Solution Approach 1:
The patent uses composite stain formulations containing multiple fluorescent dyes or pigments with different emission characteristics. These composite materials absorb electromagnetic radiation and re-emit it at different wavelengths, enabling the wood grain to be visualized in both daylight and darkness with enhanced contrast between heartwood and sapwood regions.
Solution Approach 2:
The patent applies fluorescent dyes and pigments that exhibit color changes under different lighting conditions. These materials appear as specific colors in visible light and emit fluorescent colors under ultraviolet or blacklight illumination, allowing the wood grain pattern to be enhanced and visualized in both daylight and darkness conditions.
2Reliability
If traditional staining processes are used, then the process is straightforward, but oxidation products form within the wood causing darkening and diminished contrast between heartwood and sapwood
Solution Approach 1:
The patent implements pre-treatment steps before staining to prepare the wood surface and prevent oxidation. These preliminary actions include cleaning the wood surface, applying mordants or size agents to seal the wood, and controlling environmental conditions during staining. This prevents oxidation products from forming and darkening the wood, thereby maintaining contrast between heartwood and sapwood regions.
Solution Approach 2:
The patent addresses the harmful oxidation effect by using fluorescent materials that can be applied in controlled formulations. The oxidation that would normally cause darkening is countered by the fluorescent properties of the dyes and pigments, which maintain visual contrast even when oxidation occurs, effectively converting the harmful oxidation effect into a manageable condition.
3Loss of information
If multiple fluorescent dyes or pigments are used to enhance wood grain visualization, then the grain pattern becomes visible in both visible and invisible light, but the staining process becomes more complex and requires precise control
Solution Approach 1:
The patent employs feedback control mechanisms in the automated staining process. Sensors detect the absorption and emission characteristics of the fluorescent dyes and pigments applied to the wood, and this information is fed back to control systems that adjust application parameters in real-time. This ensures precise control over the staining process, maintaining consistent grain feature visibility and fluorescent properties across different wood pieces.
Solution Approach 2:
The patent replaces manual staining operations with automated systems that use electromagnetic radiation sources (such as UV or blacklights) to activate the fluorescent materials. This substitution of mechanical manual processes with automated electromagnetic-based systems enables precise control over the staining and activation process, ensuring consistent results and maintaining grain feature visibility.
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 process effectively enhances the visualization of wood grain patterns in both daylight and darkness, providing a unique, multi-colored appearance that showcases the sapwood and hardwood features, with the added feature of glowing under ultraviolet light, thereby creating a distinctive and decorative surface.
Implementation Method 1
The artificial coloring of wood, more specifically, by wood staining, has traditionally involved the preparation of the wood surface, by sanding, the removal of excess colorants from the wood by bleaching, followed thereafter by the application of a water or oil based stain or varnish. This process can typically involve light sanding, and the repeated application of the stain or varnish until the desired color is attained.
Implementation Method 2
A process involving the use of a stain formulation containing multiple fluorescent dyes or pigments, combined with pre-treatment methods like bleaching and embossing, to enhance the wood grain pattern, making it visible in both visible and invisible light through the absorption and emission of electromagnetic radiation.
Implementation Method 3
the removal of excess colorants from the wood by bleaching
Data Source
AI summary
An automated or semi-automated process for staining/finishing a wood article, preferably unfinished wood, and/or wood articles from which the finish has been removed, with a stain (oil or water based) containing a plurality of fluorescent dyes and/or pigment. The automated or semi-automated wood staining/finishing process, or at least one step thereof, is performed on pre-programmed automated equipment in (a) a flatline wood staining/finishing system, (b) a hangline wood staining/finishing system and/or (c) a towline wood staining/finishing system. The contrast between heartwood and sapwood features of the wood grain of the article is reduced to a desired degree by bleaching, and the bleached wood treated with a stain formulation containing a plurality of fluorescent dyes and/or pigment. In each instance the color of the stain shall appear in varying intensity depending upon the uptake thereof in the heartwood or the sapwood.