Thin Multilayer Vehicle Sheet Coating for Durable Aircraft Exteriors

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Solution Overview

Problem

Conventional vehicle exterior coatings, particularly those used on airplanes, are thick, heavy, and require frequent reapplication, leading to drag-induced turbulence and downtime due to their application process, which is time-consuming and inefficient.

Innovation Solution

A thin, multilayer vehicle sheet coating without a substrate, composed of an adhesive layer, color layer, and modified clearcoat layer, which is durable and adheres well to vehicle surfaces, allowing for quick installation and compliance with FAA standards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional paint or colored film sheets are used to protect and decorate vehicle exteriors, then the exterior surface is covered and decorated, but the coating deteriorates quickly and requires frequent reapplication

Engineering Contradiction:
Improvecoating durabilityVSAvoidcoating service life
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The coating is divided into multiple functional layers: a flexible adhesive layer for bonding, a color layer for decoration, and a modified clearcoat layer for protection. This segmentation allows each layer to be optimized for its specific function, improving overall durability and resistance to deterioration

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention uses a composite structure combining different materials with complementary properties: the adhesive layer provides flexibility and bonding, the color layer provides aesthetic coverage, and the modified clearcoat layer provides environmental resistance. This composite approach creates a more durable system than single-material coatings

Inventive Principle:
Principle #40Composite materials

2Reliability

If multiple layers of paint are applied to achieve desired color and protection, then the coating provides adequate coverage and durability, but the thickness increases to 10-15 mils

Engineering Contradiction:
Improvecoating protectionVSAvoidcoating thickness
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The invention changes the formulation parameters of the clearcoat layer by adding translucent pigment, which allows the layer to be applied thinner while maintaining adequate protection and adhesion to the color layer. This parameter modification reduces the overall coating thickness from conventional 10-15 mils to a thinner profile

Inventive Principle:
Principle #35Parameter changes

3Reliability

If thick coating layers of 10-15 mils are applied to vehicle exteriors, then adequate protection and coverage are achieved, but the weight of the airplane increases

Engineering Contradiction:
Improveexterior protectionVSAvoidairplane weight
Core Design Contradiction:
ReliabilityVSWeight of stationary object

Solution Approach 1:

By modifying the clearcoat formulation with translucent pigment and optimizing the layer thickness parameters, the coating provides adequate protective function at a reduced thickness, thereby reducing the overall weight of the airplane while maintaining exterior protection

Inventive Principle:
Principle #35Parameter changes

4Adaptability or versatility

If conventional paint application processes are used with multiple colors and livery requirements, then the desired aesthetic appearance is achieved, but each color requires a separate day for masking, painting and curing

Engineering Contradiction:
Improvelivery customizationVSAvoiddowntime for exterior treatment
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The coating system is segmented into pre-manufactured sheets that come in different colors and designs. This allows the color and decoration decisions to be made during the sheet manufacturing process rather than during aircraft maintenance, enabling quick installation of different liveries without time-consuming masking and painting operations

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The color layers and designs are prepared in advance during sheet manufacturing. When installation is needed, the pre-prepared sheets are simply applied to the aircraft surface, eliminating the need for on-site mixing, masking, and multi-day curing processes

Inventive Principle:
Principle #10Preliminary action

5Reliability

If thick coating edges are applied to vehicle exteriors, then adequate coverage is achieved, but the coating edges create drag-inducing turbulence on the skin of the airplane

Engineering Contradiction:
Improvecoating coverageVSAvoiddrag-inducing turbulence
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

By reducing the coating thickness parameter and optimizing the edge profile through the thin-sheet construction, the coating minimizes protrusion and edge irregularities that would otherwise create turbulence and drag on the aircraft surface

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12410342B2Vehicle sheet coating
Publication Date: 2025.09.09 GREINER CRAIG
  • US12410342B2 patent drawing

AI summary

A multilayer vehicle exterior coating is both durable and easy to install and conforms FAA standards. This vehicle sheet coating has no film or substrate resulting in a finished coating sheet that is about 6 mils thick (0.006″). The multilayer protective sheet material is suitable for application to vehicle exterior surface.