Extrusion Coated Structural Members Resisting Cracking
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Solution Overview
Problem
Conventional ready-to-assemble structures lack strength, durability, and aesthetic appeal, with many coating materials exhibiting poor adhesion and limited design flexibility due to complex geometries, leading to low-quality products.
Innovation Solution
A structural system featuring a substrate with a thermoplastic resin coating extruded onto medium-density fiber board, oriented strand board, or wood-plastic composites, with protrusions and recesses coated to enhance strength and aesthetic appeal, allowing for increased thickness and design complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coating materials are applied to substrate components, then adhesion and final appearance are improved, but the coating fails on complex geometries with cuts, grooves, and channels
Solution Approach 1:
The patent changes the application method parameter from conventional coating to extrusion coating, allowing the coating material to be forced into complex geometries under pressure, thereby maintaining both adhesion reliability and design flexibility
Solution Approach 2:
The patent introduces an extrusion coating process as an intermediary method between the coating material and the substrate, enabling the coating to conform to complex geometries by being extruded into cuts, grooves, and channels before curing
2Strength
If coating material is applied to enhance strength and durability, then structural performance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the coating application process with the extrusion成型 process, allowing the coating material to be applied and formed in a single operation rather than as a separate step, thereby reducing manufacturing complexity while maintaining strength enhancement
Solution Approach 2:
The extrusion coating process applies coating material directly to the substrate in the desired locations during the forming process itself, eliminating the need for separate coating equipment and operations, thus reducing manufacturing complexity
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 extrusion-coated structural system exhibits a peak stress increase of at least 50% and improved durability, ease of assembly, and enhanced aesthetic appearance, while being cost-effective to manufacture and ship.
Implementation Method 1
a coating material extrusion coated onto at least a portion of the substrate, wherein said coating material comprises a thermoplastic resin
Implementation Method 2
thermoplastic resin having a glass transition temperature in the range of from about 60 to about 150 °C
Data Source
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AI summary
Structural systems having coated structural members with enhanced durability are provided, along with methods of making and using the same. Structural members including at least one coating material applied to a substrate that comprises at least one protrusion may exhibit increased strength and/or durability and may be less likely fail during use. For example, structural members as described herein exhibit an improved resistance to cracking when a force is applied to the protrusion. Structural systems according to embodiments of the present invention can be suitable for use in a variety of applications, including in ready-to-assemble furniture or cabinetry applications or as building and construction materials such as wall board, flooring, trim, and the like.