Consumer scrubbing article with stain release and method of making same
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Solution Overview
Problem
Existing scrubbing articles lack effective stain release properties while maintaining the benefits of a textured surface, as stain resistance materials often decrease adhesion and conformability of the texture layer.
Innovation Solution
A scrubbing article with a substrate coated in a stain release agent, such as polyethylene oxide or sulfonated polyester, underneath a texture layer that forms discrete portions to enhance stain release and maintain adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stain resistance materials are applied to the substrate, then stain release properties are improved, but adhesion of the texture layer deteriorates
Solution Approach 1:
The substrate surface is segmented into multiple layers with distinct functions: a stain release coating layer containing stain resistance materials, and a texture layer containing abrasive particles. This segmentation allows each layer to perform its specific function independently - the stain release layer prevents staining while the texture layer provides scrubbing capability and maintains adhesion through its bonding matrix.
Solution Approach 2:
The patent introduces an intermediary bonding matrix in the texture layer that acts as a mediator between the stain release coating and the abrasive particles. This bonding matrix ensures strong adhesion of the texture layer to the stain release coating while allowing the stain release properties to remain effective at the substrate interface.
2Ease of operation
If a textured surface is applied to the substrate, then scrubbing performance is improved, but stain release properties deteriorate
Solution Approach 1:
The cleaning article is segmented into functionally distinct layers: the stain release coating applied to the substrate provides stain resistance, while the separate texture layer with abrasive particles provides scrubbing performance. This segmentation ensures that neither function interferes with the other.
Solution Approach 2:
Different regions of the cleaning article have different local qualities optimized for specific functions. The stain release coating provides low surface energy properties for stain resistance at the substrate level, while the texture layer provides high abrasion resistance and scrubbing capability at the surface level where it contacts contaminants.
3Ease of operation
If the texture layer is made harder for better scrubbing, then scrubbing performance is improved, but conformability deteriorates
Solution Approach 1:
The texture layer is formulated as a composite material combining abrasive particles with a bonding matrix. This composite structure provides the hardness and scrubbing performance needed for effective cleaning while the bonding matrix maintains flexibility and conformability, allowing the texture layer to adapt to various surface geometries.
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 scrubbing article achieves improved stain release and maintains strong adhesion of the texture layer, providing effective scrubbing performance without compromising adhesion or conformability.
Implementation Method 1
the stain resistance materials are likely to decrease adhesion of a printed texture layer. A hard polymer coating is also likely to decrease conformability of a scrubbing article
Data Source
Figure 1~1A
Figure 2~3
Figure 4
AI summary
A scrubbing article including a substrate, a stain release coating and a texture layer. The stain release coating is applied to the substrate and is present over a at least a major surface of the substrate, and the texture layer is formed over the stain release coating opposite the substrate. In some embodiments, the texture layer is printed on to the stain release coating. The substrate can assume various forms, such as nonwoven, fabric (e.g., woven or knitted), foam, film and sponge material or combinations thereof.