Laminate Panel Press Skin Grinding for Delamination Prevention
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Solution Overview
Problem
Direct printing technology for laminate panels results in insufficient thickness, leading to production delays, increased costs, and susceptibility to delamination due to the need for additional grinding and material thickness, which affects the stack height and quality assurance.
Innovation Solution
A method involving a large-format support board with a formed press skin, where some of the press skin is ground off, and a melamine-based resin is applied to penetrate and coat the remaining area, followed by a primer, decorative lacquer, wear-resistant seal, and subsequent molding under pressure and temperature, allowing for thinner support boards and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If direct printing technology is used to produce laminate panels, then the thickness of the finished panels is reduced, but the panels become susceptible to delamination and require high quality assurance that slows down production
Solution Approach 1:
The press skin is ground off before applying the decorative layers to create a clean, stable surface that prevents delamination. This preliminary preparation ensures proper adhesion of subsequent layers while maintaining reduced panel thickness
Solution Approach 2:
The method changes the surface preparation parameters by selectively removing the press skin through grinding to expose fresh material, creating optimal conditions for adhesive bonding and preventing the glue bridge breaking that causes delamination
2Reliability
If the press skin is completely ground off to prevent delamination, then the support board must be made thicker, but this increases production costs
Solution Approach 1:
Only the problematic press skin layer is selectively removed through grinding, while preserving the sufficient thickness of the support board core. This extraction approach removes only the necessary portion causing delamination without requiring overall thickness increase
Solution Approach 2:
The grinding process applies local quality change by removing material only from the surface layer where the press skin exists, while maintaining the overall thickness and structural integrity of the support board
3Reliability
If additional grinding and material are added to compensate for thickness, then delamination is prevented, but production time and costs increase
Solution Approach 1:
The previously harmful press skin that caused delamination is converted into a beneficial preparatory surface through controlled grinding. This creates an optimal bonding surface that actually improves adhesion and prevents delamination while maintaining production efficiency
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 enables the production of standard 6 mm laminate panels from 5.8 mm thick support boards, reducing production time and costs, while enhancing panel quality and reducing the risk of delamination by preserving the press skin's properties and forming a robust substructure.
Implementation Method 1
a base coat of a liquid resin based on melamine is applied to the top of the support board, the resin diffusing at least in part into the upper edge layer of the support board and penetrating and coating the remaining area of the press skin
Implementation Method 2
the adhesive sets too quickly, by which glue bridges partially break and which make the applied layer sensitive. This breaking of the glue bridges makes finished panels susceptible to raising of the decorative and wearproof layers
Implementation Method 3
the structure of the board is compressed under the action of temperature until the protective layer and the sealing layer bond are connected to one another
Implementation Method 4
molding the laminar structure under the action of pressure and temperature
Data Source
AI summary
A method for producing panels and a panel produced according to the method is provided. The method includes the following steps: a) providing a large-format, press blank particle board made of wood material including a press skin created during production at least on the top side thereof; b) grinding off a part of the press skin from the top side of the particle board; c) applying a base coat made of a liquid melamine-based resin to the top side of the particle board, wherein the resin diffuses at least partially into the top edge layer of the particle board, and at least penetrates and treats the remaining area of the press skin; d) drying the base coat; e) applying a primer over the base coat; f) drying the primer; g) applying at least one water-based paint enriched by pigments for generating a decoration; h) drying the decoration; i) applying a seal made of at least one melamine-based resin enriched with wear-resistant particles and cellulose fibers; j) drying the seal; k) applying a base coast made of a liquid melamine-based resin to the bottom side of the particle board, wherein the resin diffuses at least partially into the bottom edge layer of the particle board; l) drying the base coat; m) applying a counterpart to the bottom of the particle board; n) pressing the layer construction under the effect of pressure and temperature; o) cutting the particle board into panels of the desired width and length; p) applying binding agents and locking elements to opposite side edges for binding and locking a plurality of panels into a floating laid composite floor.