Strippable Coating Application for Uniform Surface Adhesion

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Solution Overview

Problem

The adhesion between a painted surface and a strippable coating material is uneven, leading to difficulties in peeling the coating uniformly.

Innovation Solution

Polish the painted surface to create uniform irregularities before applying the strippable coating material, using either a polisher with an abrasive or a cloth member with fine particle abrasive, to enhance anchoring effects and ensure uniform adhesion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the strippable coating material is coated directly on the painted surface, then the coating process is simple, but the adhesion between the painted surface and the strippable coating becomes uneven

Engineering Contradiction:
Improvecoating process simplicityVSAvoidadhesion uniformity
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by polishing the painted surface before coating the strippable coating material. This pre-treatment creates uniform irregularities on the surface that ensure consistent adhesion throughout the coating process, preventing the adhesion uniformity problems that would otherwise require complex multi-step surface preparation

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent changes the surface parameter by creating controlled irregularities through polishing. This physical modification of the surface topology transforms the surface from smooth to uniformly textured, which fundamentally alters how the strippable coating material adheres to the substrate, ensuring uniform adhesion across the entire surface

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If polishing is applied to create uniform irregularities, then the adhesion uniformity is improved, but the coating process complexity increases

Engineering Contradiction:
Improveadhesion uniformityVSAvoidcoating process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by modifying the surface topology through polishing to create uniform irregularities. This single parameter change (surface texture) achieves uniform adhesion without requiring complex coating formulations or multi-step processes, thereby improving precision while minimizing added complexity

Inventive Principle:
Principle #35Parameter changes

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 achieves uniform adhesion between the painted surface and the strippable coating, facilitating easy and consistent peeling, even on surfaces with varying irregularities.

Implementation Method 1

polishing a painted surface of a coated object using an abrasive so as to form uniform irregularities on the painted surface

Methodology Applied
Scientific EffectAbrasion: Abrasion

Data Source

PatentUS12453986B2Method of coating strippable coating material
Publication Date: 2025.10.28 TOYOTA JIDOSHA KK
  • US12453986B2 patent drawing
  • US12453986B2 patent drawing
  • US12453986B2 patent drawing

AI summary

Provided is a method of coating a strippable coating material capable of achieving uniform adhesion between a painted surface and a strippable coating composed of the strippable coating material. The method of coating the strippable coating material includes steps of: typical vehicle coating to form an electrodeposition layer, an intermediate coating layer, a base layer, and a clear layer on a coated object; polishing the painted surface of the coated object using an abrasive so as to form uniform irregularities on the painted surface; degreasing to perform a degreasing treatment on the polished painted surface; and coating the strippable coating material on the polished painted surface.