Structured Abrasive Article with Foam Backing for Consistent Polishing
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Solution Overview
Problem
Existing abrasive articles face challenges in achieving consistent and efficient material removal operations, particularly in polishing automotive clear coats, due to variations in interlayer thickness and structure design, which affect performance and manufacturing consistency.
Innovation Solution
The abrasive article incorporates a backing with a foam density of 50 to 175 kg/m3, an abrasive layer with shaped structures, and an interlayer with controlled interlayer thickness (ILT) variations to enhance performance and manufacturing consistency, using a slurry deposition process to create a structured abrasive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a foam backing with density of 50 to 175 kg/m3 is used, then polishing performance and surface finish quality are improved, but manufacturing complexity increases due to controlled interlayer thickness variations
Solution Approach 1:
The patent applies parameter changes by specifying a foam density range of 50 to 175 kg/m3 and controlling interlayer thickness (ILT) within 0.5 to 20 micrometers. These parameter specifications enable consistent material removal rates and surface finish quality while managing manufacturing complexity through defined tolerances.
Solution Approach 2:
The patent uses a composite structure consisting of a foam backing layer, an interlayer with controlled thickness variations, and a structured abrasive layer. This composite design combines the cushioning properties of foam with the functional properties of the abrasive layer, achieving both polishing performance and manufacturing consistency.
2Productivity
If shaped structures with abrasive particles and binder are used in the abrasive layer, then material removal efficiency is improved, but manufacturing precision challenges arise due to interlayer thickness variations
Solution Approach 1:
The patent applies local quality by creating shaped structures within the abrasive layer that have specific geometries and distributions. The interlayer thickness is locally controlled to accommodate these shaped structures, enabling efficient material removal while maintaining overall manufacturing precision through localized thickness variations.
Solution Approach 2:
The patent segments the abrasive layer into shaped structures comprising abrasive particles and binder, separated by an interlayer. This segmentation allows each component to perform its specific function - the shaped structures for material removal and the interlayer for thickness control and cushioning.
3Strength
If foam density is increased to 50-175 kg/m3, then structural support and polishing performance are improved, but weight of the abrasive article increases
Solution Approach 1:
The patent optimizes the foam density parameter within the range of 50 to 175 kg/m3 to achieve the right balance between structural support and weight. This parameter optimization ensures the backing provides sufficient support for the abrasive layer while minimizing the overall weight of the abrasive article.
Data Source
AI summary
According to one aspect, an abrasive article includes a backing and an abrasive layer comprising shaped structures comprising abrasive particles and a binder; and an interlayer between the backing and the abrasive layer. The backing can include a foam having a density of at least 50 kg/m3 and not greater than 175 kg/m3.