Composite Marine Decking With Neoprene Foam and Polyurethane Coating
Solution Overview
Problem
EVA foam decking for marine vessels is prone to wear, tear, UV degradation, adhesive failure, heat retention, and limited lifespan, making it uncomfortable and difficult to maintain, especially in high-traffic areas.
Innovation Solution
A composite marine decking assembly comprising a closed-cell neoprene foam layer bonded to a polyurethane layer, with a slip-resistant and durable design, featuring a visual wood-like appearance and enhanced adhesion, produced using a vacuum table and polyurethane mixture application process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If EVA foam decking is used for marine vessels, then comfort and ease of installation are improved, but durability and resistance to wear, UV degradation, and adhesive failure worsen
Solution Approach 1:
The patent applies composite materials by combining EVA foam with a polyurethane coating layer. The EVA foam provides comfort and ease of installation, while the polyurethane coating enhances durability, UV resistance, and wear resistance. This composite structure resolves the contradiction by integrating materials with complementary properties.
Solution Approach 2:
The patent modifies the surface properties of the EVA foam by applying a polyurethane coating with specific physical and chemical parameters. The coating changes the surface hardness, UV resistance, and wear resistance parameters while maintaining the underlying foam's comfort properties, thus resolving the contradiction between ease of installation and durability.
2Ease of operation
If adhesive backing is used on EVA foam decking, then installation is simplified, but adhesion reliability deteriorates in hot climates and saltwater environments
Solution Approach 1:
The patent changes the adhesion mechanism from pressure-sensitive adhesive backing to mechanical bonding via polyurethane coating. The polyurethane is applied to the back of the EVA foam and bonds to the substrate, providing reliable adhesion in harsh marine environments while maintaining installation simplicity.
Solution Approach 2:
The polyurethane coating acts as an intermediary bonding layer between the EVA foam and the substrate. This intermediary provides superior adhesion properties compared to direct adhesive bonding, resisting failure in hot climates and saltwater environments while preserving the ease of installation benefit.
3Ease of operation
If EVA foam is used for marine decking, then comfort is improved, but heat retention increases making it uncomfortable in direct sunlight
Solution Approach 1:
The patent modifies the thermal properties of the EVA foam by applying a polyurethane coating with different thermal characteristics. The coating layer reduces heat retention and reflects sunlight, lowering the surface temperature while preserving the cushioning comfort of the underlying foam.
Solution Approach 2:
The composite structure of EVA foam with polyurethane coating creates a multi-layer system where each material contributes its optimal properties. The foam provides comfort and cushioning, while the polyurethane coating provides thermal reflection and heat dissipation, resolving the contradiction between comfort and heat retention.
4Quantity of substance
If EVA foam decking is installed, then initial cost is reduced, but maintenance requirements and cleaning difficulty increase over time
Solution Approach 1:
The patent applies a polyurethane coating layer over the EVA foam to create a protective surface that is resistant to stains, UV damage, and wear. This coating makes the decking easier to clean and maintain over time, addressing the maintenance difficulty contradiction while the initial material cost remains competitive.
Solution Approach 2:
The polyurethane coating changes the surface properties of the EVA foam to be non-porous and stain-resistant. This parameter change makes the surface easier to clean and maintain, reducing the long-term maintenance burden while the initial material cost remains comparable to or slightly higher than plain EVA foam.
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 composite decking provides a durable, slip-resistant, and weather-resistant surface with improved adhesion, allowing for easy installation and maintenance, while maintaining a comfortable and aesthetically pleasing appearance.
Implementation Method 1
providing a vacuum table to maintain a level surface during production
Implementation Method 2
The two parts of the polyurethane mixture are weighted in a container and are mixed manually or mechanically using a drill, mechanical mixer or other comparable mechanical tool. The method further comprises pouring or otherwise placing and/or evenly distributing the polyurethane mixture onto the top surface of the neoprene foam layer. This results in forming a polyurethane layer that is welded to the neoprene foam layer.
Implementation Method 3
Before applying and installing an adhesive transfer tape, the neoprene foam layer may be prepped and/or primed. This may generally involve cleaning the bottom surface with a 50/50 isopropyl alcohol to water mixture to remove contaminants.
Implementation Method 4
The method further comprises applying heat to the top surface of the polyurethane layer as needed to remove any bubbles that may have formed during the process.
Data Source
AI summary
A method of producing a composite marine decking assembly. The method comprises placing an neoprene foam layer on an operational vacuum table and installing a forming assembly to define an enclosure area. The method optionally comprises prepping the exposed neoprene foam layer surface to apply a polyurethane layer. The method further comprises providing and mixing a resin part and a hardener part to obtain a polyurethane mixture. The method further comprises applying and spreading the polyurethane mixture on the top surface of the neoprene foam layer to obtain an adhered polyurethane layer. The method further comprises applying heat to the polyurethane layer to remove any formed bubbles and allowing curing thereof. The resulting sheet of the composite decking assembly may be removed from the vacuum table, sanded, routed and/or cut into individual panels according to the intended geometry.