Direct Printed Lightweight Panel with Hardness Gradient Coating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing direct printed and laminate panels require high-density MDF or HDF boards, making them expensive and difficult to produce, while also lacking a realistic wood or stone decor appearance.
Innovation Solution
A direct printed lightweight panel using MDF or LDF boards with a density ≤ 750 kg/m³, where the decor is printed directly onto the board with a transparent protective coating, incorporating the board's surface structures and characteristics for a realistic design, and applying a polymer coating with a hardness gradient for enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high-density MDF or HDF boards are used for direct printed panels, then mechanical strength and durability are improved, but production cost and material cost increase
Solution Approach 1:
The patent changes the density parameter of the carrier board from high-density (800 kg/m³ for HDF) to medium-density (600-750 kg/m³ for MDF), reducing material cost while maintaining mechanical strength through optimized surface treatment and coating processes
Solution Approach 2:
The patent creates a composite structure combining medium-density MDF carrier board with a multi-layer coating system (primer, decorative layer, protective top layer), where the composite provides both cost-effectiveness and mechanical durability
2Strength
If high-density MDF or HDF boards are used for direct printed panels, then mechanical strength and durability are improved, but manufacturing complexity and processing difficulty increase
Solution Approach 1:
The patent reduces the density parameter of the carrier board to medium-density range, which simplifies processing and manufacturing operations while maintaining adequate mechanical strength through surface optimization
3Ease of manufacture
If standard MDF boards with smooth surfaces are used, then ease of printing is improved, but realistic wood or stone decor appearance is reduced
Solution Approach 1:
The patent applies preliminary surface treatment to the MDF carrier board before printing, creating an optimized surface structure that enhances both printability and the realistic decor appearance by allowing better ink penetration and texture formation
Solution Approach 2:
The patent creates local variations in surface properties through the coating process, where the decorative layer and protective top layer are applied with specific characteristics that enhance the realistic wood or stone appearance while maintaining overall manufacturability
4Ease of manufacture
If lightweight MDF or LDF boards are used, then production cost is reduced, but surface absorption properties change affecting print quality
Solution Approach 1:
The patent introduces a primer layer as an intermediary between the lightweight MDF/LDF carrier board and the decorative coating, controlling the absorption properties and ensuring uniform ink uptake while maintaining print quality and cost-effectiveness
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 reduces production costs and achieves a more realistic wood or stone decor appearance by utilizing lower-density boards, which are mechanically robust and cost-effective, while maintaining the necessary durability and aesthetic quality.
Implementation Method 1
a polymer coating with a hardness gradient after curing, so that the hardness of the polymer layer decreases with increasing depth when viewed from the surface
Data Source
Figure 1
Figure 2
AI summary
The present invention relates to a direct printed lightweight panel, in particular a flooring panel, comprising a lightweight MDF or LDF carrier board with a density of ≤ 750 kg/m3; a decor layer printed onto the carrier board; and a transparent protective coating. The different layers and coatings are applied in such a manner so that surface structures and/or optical characteristics of the carrier board are at least partially visible and thereby incorporated into the design of the decor layer.