Humectant Wetting Agents for Precise Panel Pressing
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Solution Overview
Problem
Existing methods for moistening material cakes in panel pressing, such as using steam, suffer from inaccurate dosing and high agent losses, leading to inefficient heat penetration and surface quality issues.
Innovation Solution
A humectant comprising polyols, acylglycerides, surfactants, and water is applied to the material cake using rollers, allowing precise dosing and generating a steam burst for enhanced heat penetration and surface smoothness, comprising polyols with at least two hydroxyl groups, acylglycerides with unsaturated fatty acids, and surfactants, with adjustable water content and optional additives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If steam is used to moisten the material cake, then heat penetration into the interior is improved, but dosing precision deteriorates and agent losses increase
Solution Approach 1:
The invention changes the physical state of the humidifying agent from vapor (steam) to liquid form. The liquid humidifying agent is applied to the material cake surface, where it then evaporates to generate steam bursts within the material. This parameter change enables precise dosing control while maintaining effective heat penetration through the steam generation mechanism.
Solution Approach 2:
The liquid humidifying agent serves as an intermediary substance that is applied to the material cake surface. It then evaporates to generate steam bursts internally. This intermediary approach allows for controlled application and dosing while achieving the desired steam penetration effect without directly introducing steam.
2Temperature
If steam is used to moisten the material cake, then heat penetration into the interior is improved, but agent losses increase
Solution Approach 1:
Changing from vapor-phase steam to liquid-phase humidifying agent application reduces agent losses. The liquid can be precisely dosed and controlled, and the subsequent evaporation occurs within the controlled environment of the press, minimizing losses to the surrounding environment.
Solution Approach 2:
The liquid humidifying agent acts as a controlled intermediary that delivers the necessary moisture and heat to the material cake. Its application can be precisely controlled, and the evaporation process occurs where needed, reducing unnecessary agent losses associated with direct steam injection.
3Measurement precision
If liquid humidifying agent is applied instead of steam, then dosing precision is improved, but surface quality may deteriorate due to excess moisture
Solution Approach 1:
The liquid humidifying agent is applied to the material cake surface before pressing begins. This preliminary action allows the liquid to be distributed evenly and then evaporate during the pressing process, generating steam bursts that penetrate the material interior without leaving excess surface moisture, thus maintaining surface quality.
Solution Approach 2:
The humidifying agent is applied in a controlled manner, and its evaporation occurs periodically during the pressing process. This periodic action ensures that moisture is introduced at the right time and evaporates appropriately, preventing surface quality deterioration while maintaining dosing precision.
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 enables precise moisture application, accelerating binding agent setting, improving surface smoothness, reducing grinding needs, and minimizing agent loss, while allowing better fiber compression and reduced lacquer penetration, resulting in higher quality pressed panels with lower lacquer consumption.
Implementation Method 1
When the material cake enters the press, the high moisture content on the surface and the high temperature of the press plate cause sudden evaporation, so that a burst of steam occurs through the material cake
Implementation Method 2
The humectant contains polyols, acylglycerides or their derivatives, surfactants and water
Data Source
AI summary
The invention relates to wetting agents for wetting working material for producing pressed material boards, containing polyols, acylglycerides or acylglyceride derivatives, surfactants, and water.