Dual-Surface Coating for Cleaning Sheets to Prevent Residue Deposition
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Solution Overview
Problem
Existing cleaning sheets for hard surfaces often leave residue due to oil or wax additives, which can attract more debris and cause a sticky tactile sensation, as oil can migrate and wax may exhibit cohesive failure.
Innovation Solution
A cleaning sheet with wax applied to the peaks of the first surface and oil on the second surface, preventing oil from reaching the peaks and minimizing residue deposition while effectively capturing debris in the valleys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If oil is disposed on the sheet to capture debris, then debris capture ability is improved, but residue is left on the target surface
Solution Approach 1:
The sheet is divided into two distinct surfaces: the first surface (contact side) with wax coating for debris capture, and the second surface (opposite side) with oil coating for debris transfer. This segmentation allows each surface to perform its specific function without the harmful effects of the other coating type being present at the contact point.
Solution Approach 2:
The invention moves the oil coating from the traditional single-surface application to the opposite surface dimension. Instead of applying oil where debris contact occurs, the oil is applied on the reverse side, utilizing the third dimension (sheet thickness) to separate the functions of debris capture and debris transfer.
2Reliability
If wax is disposed on the sheet to capture debris, then debris capture ability is improved, but cohesive failure occurs and residue is deposited
Solution Approach 1:
The sheet is divided into two distinct surfaces: the first surface (contact side) with wax coating for debris capture, and the second surface (opposite side) with oil coating for debris transfer. This segmentation allows each surface to perform its specific function without the harmful effects of the other coating type being present at the contact point.
3Object-generated harmful factors
If oil is disposed on the second surface to prevent direct contact with target surface, then residue deposition is reduced, but oil may still migrate through to the front side
Solution Approach 1:
The wax coating is applied to the first surface in advance to create a protective barrier before the oil coating is applied to the second surface. This preliminary action ensures that when oil migrates through the sheet, it encounters the wax barrier that prevents direct contact with the target surface, thereby maintaining coating stability and preventing residue deposition.
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 sheet effectively captures debris without leaving residue on the target surface, enhancing cleaning performance while maintaining a non-sticky tactile sensation.
Implementation Method 1
Wax is disposed on the first surface; and oil is disposed on the second surface of the sheet
Data Source
AI summary
A nonwoven sheet, having a first outwardly facing surface and a second outwardly facing surface. Wax is disposed in a wax pattern on the first surface; and oil is disposed in an oil pattern on the second surface. The oil pattern is not coincident the wax pattern so that wax blocks the oil from permeating through to the first surface. The first surface may be textured with peaks and valleys, having wax disposed on the peaks. This arrangement keeps the oil from contacting the target surface and leaving residue, while allowing the oil to collect and retain debris. The sheet may be executed as a dry sheet for cleaning surfaces such as floors or as a duster.