OSB Surface Structuring via Hot Melt Adhesive Impregnation
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Solution Overview
Problem
OSB surfaces are prone to water penetration and swelling due to their geometry, making them unsuitable for outdoor applications, and existing methods for creating a structured surface are costly and inefficient, limiting their use in facade construction.
Innovation Solution
Applying a hot melt adhesive at elevated temperatures to fill surface depressions and impregnate the strands, followed by structuring with a roller or press, creating a moisture barrier and enabling paintability and castability while maintaining mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If OSB is used for outdoor applications, then it provides good mechanical properties and lightweight characteristics, but the surface geometry causes water penetration and swelling
Solution Approach 1:
A hot melt adhesive layer is applied as an intermediary substance between the OSB surface and the environment. This adhesive layer fills the surface depressions and creates a moisture barrier, preventing direct water contact with the OSB while maintaining the underlying mechanical structure
Solution Approach 2:
The surface geometry of the OSB is modified by filling depressions with hot melt adhesive and creating structured relief patterns. This changes the surface parameters (roughness, porosity, hydrophobicity) to achieve water repellency while preserving the bulk mechanical properties
2Adaptability or versatility
If a structured surface is applied to OSB, then paintability and castability are enabled, but the process complexity increases
Solution Approach 1:
Hot melt adhesive is applied in its molten state to fill surface depressions, then it undergoes phase transition by cooling and solidifying. This simple phase change process creates a structured surface that enables paintability and castability without requiring complex manufacturing equipment
Solution Approach 2:
The patent replaces complex mechanical texturing systems with a thermal process using hot melt adhesive. The adhesive is applied in molten state and structured through controlled cooling, substituting mechanical surface modification with a thermal-chemical approach that is simpler and more cost-effective
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 method provides a cost-effective, paintable, and structurable surface with enhanced moisture resistance, allowing OSB to be used in larger formats and outdoor applications without significant loss of mechanical strength.
Implementation Method 1
Applying at least one layer of at least one plastic resin, in particular a hot melt adhesive, to at least one surface of the OSB, wherein the at least one hot melt adhesive is applied at a temperature 10 to 50°C above the usual melting temperature of the hot melt adhesive used
Implementation Method 2
the at least one hot melt adhesive is applied at a temperature 10 to 50°C above the usual melting temperature of the hot melt adhesive used
Implementation Method 3
the hot melt adhesive is applied at a temperature 10 to 50°C above the usual melting temperature of the hot melt adhesive used
Implementation Method 4
Applying at least one layer of at least one plastic resin, in particular a hot melt adhesive, to at least one surface of the OSB... followed by structuring with a roller or press, creating a moisture barrier
Data Source
AI summary
The present invention relates to a method for producing an OSB with a structured surface, comprising the steps of: a) providing at least one OSB, b) applying at least one layer of at least one polymer resin to at least one surface of the OSB; wherein the at least one polymer resin is a hot melt adhesive applied at a temperature 10 to 50 °C, preferably 25 to 45 °C, above the usual application temperature of the hot melt adhesive used; and c) structuring the surface of the OSB coated with the at least one hot melt adhesive. The present invention also relates to an OSB producible by this method.