Vehicle Panel Micro-Apertures Without Polymer Substrate Damage

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Solution Overview

Problem

Laser ablation on polymer substrates painted with grayscale or color layers can damage the substrate, making it challenging to form large graphics or illuminated panels without causing substrate damage.

Innovation Solution

A vehicle panel arrangement with a sacrificial material layer protects the polymer substrate during ablation, using laser ablation to create apertures in base paint and sacrificial material layers, and applying a metallized film and argent color layer to enhance aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If laser ablation is used to form large graphics on painted polymer substrates, then the desired aesthetic and functional features (apertures for backlit graphics) are achieved, but the polymer substrate is damaged by the laser light

Engineering Contradiction:

Improveaperture formation precisionVSAvoidsubstrate damage from laser light

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

A sacrificial material layer is introduced as an intermediary between the laser light and the polymer substrate. This layer absorbs the laser energy and protects the substrate from damage while allowing the desired apertures to be formed in the paint layers above it. The sacrificial material serves as a buffer that converts the harmful laser-substrate interaction into a controlled ablation process.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The sacrificial material layer is applied to the substrate before the paint layers are applied. This preliminary action prepares the substrate by providing protective coverage that will be in place during the subsequent laser ablation process, preventing damage before it can occur to the underlying polymer material.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the polymer substrate is protected during laser ablation, then substrate damage is prevented, but additional material layers and process steps are required

Engineering Contradiction:

Improvesubstrate integrityVSAvoidmulti-layer structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The sacrificial material layer is designed to be temporary and disposable. It is applied to protect the substrate during the ablation process, then completely removed afterward. This approach allows the substrate to be protected during manufacturing without permanently increasing the complexity of the final product structure, as the protective layer is discarded after serving its purpose.

Inventive Principle:

Principle #34Discarding and recovering

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 prevents substrate damage while creating desired apertures for backlit graphics or illuminated panels, ensuring aesthetic quality and structural integrity.

Implementation Method 1

operating the laser to emit the ablation light onto the ablation zone

Methodology Applied

Scientific EffectLaser ablation: Laser Ablation

Data Source

PatentUS20250206061A1Method of performing zone ablation on a polymer substrate

Publication Date: 2025.06.26 MAGNA EXTERIORS INC

AI summary

A vehicle panel arrangement that has a first appearance during the daylight but is capable of being backlight in a dark environment causing the badge to have a second appearance as light is transmitted through micro-apertures formed through the vehicle panel arrangement. The vehicle panel arrangement is such that the micro-apertures a not visible in the first appearance due to their small size, which is created using laser ablation, screen printing or digital printing techniques.