Steam Box for Stabilizing Dry Powder Floor Panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing fibre-based building panels, such as the Wood Fibre Floor, face challenges in stabilizing dry powder mixes during pressing, leading to uneven water distribution and unintentional water drops, which affect the visual and technical properties of the panels and slow down production.
Innovation Solution
Applying steam through a steam box with outlets positioned above a transportation belt and equipped with nets to evenly distribute moisture over a dry powder layer on a core, allowing for controlled moisture variation and pattern creation, thereby stabilizing the powder mix before pressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If water spraying is used to stabilize the dry powder mix, then the powder is stabilized, but the water distribution becomes uneven and water drops fall unintentionally on the powder layer
Solution Approach 1:
The patent replaces the mechanical water spraying system with a steam-based stabilization system. Steam is generated and directed onto the powder layer through a steam box, eliminating the need for water spraying equipment. This substitution resolves the contradiction by providing uniform moisture distribution through steam condensation without the droplet formation issues inherent in mechanical spraying.
Solution Approach 2:
The patent changes the physical state of water from liquid (spraying) to gaseous (steam). By introducing steam instead of liquid water, the system achieves uniform moisture distribution through phase change condensation on the powder surface, avoiding the uneven distribution and droplet fallout problems associated with liquid spraying.
2Stability of the object's composition
If water spraying is used to stabilize the powder layer, then the powder is stabilized, but the waiting time increases slowing down production
Solution Approach 1:
The steam box system replaces the water spraying system, enabling immediate steam application onto the powder layer during conveyor movement. This eliminates the waiting time required for water absorption, as steam condenses and stabilizes the powder instantly upon contact, thereby maintaining high production speed while achieving powder stabilization.
Solution Approach 2:
The steam box is positioned to apply steam to the powder layer before pressing occurs, during the conveyor transport phase. This preliminary stabilization action using steam allows the powder to be stabilized in advance without requiring additional waiting time, as the steam condensation and binding process occurs rapidly during normal line operation.
3Manufacturing precision
If steam is applied through outlets directly above the powder layer, then steam distribution may be uneven, but complex distribution systems increase device complexity
Solution Approach 1:
The patent introduces a vertical dimension to steam distribution by positioning the steam box above the powder layer and directing steam downward through multiple outlets at different heights. This three-dimensional steam delivery approach ensures uniform distribution across the powder surface without requiring complex lateral distribution mechanisms, resolving the contradiction between distribution uniformity and system simplicity.
Solution Approach 2:
The steam box is divided into multiple separate outlets arranged in a grid pattern above the powder layer. Each outlet independently delivers steam to a specific zone, ensuring uniform overall distribution. This segmentation allows simple individual outlet structures to combine into an effective uniform distribution system, avoiding the need for complex single-unit distributors.
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
This method ensures a uniform and controlled colour variation or pattern on the panels, preventing powder blow-off during handling and press closure, while allowing for immediate pressing and increased production efficiency by stabilizing the powder mix effectively.
Implementation Method 1
Applying steam to the powder layer by a steam box, wherein the steam box has one or more outlets at the bottom for steam
Implementation Method 2
the steam box is equipped with one or several layers of nets to even out the steam concentration close to the powder layer
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
A method for producing a panel is disclosed. The method includes the step of applying steam on a dry powder layer on a core. Thereafter is a heat and pressure applied to the powder layer in order to bond the powder together.