Cleaning sheets having coating thereon
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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 a first surface with peaks and valleys, where wax is applied to the peaks and oil is applied to the valleys. This segmentation allows different regions to perform different functions: wax on peaks prevents residue, while oil in valleys captures debris, resolving the contradiction between debris capture and residue prevention
Solution Approach 2:
Different chemical properties are applied to different locations on the sheet surface. Hydrophobic wax is localized to the peaks to prevent residue, while hydrophilic oil is localized to the valleys to capture debris. This local differentiation allows simultaneous achievement of debris capture and residue-free cleaning
2Object-generated harmful factors
If wax is applied to the sheet to prevent residue, then residue-free cleaning is improved, but debris capture ability deteriorates
Solution Approach 1:
The sheet surface is segmented into peaks and valleys, with wax applied only to the peaks and oil applied only to the valleys. This segmentation ensures that wax provides residue-free cleaning on the peaks while oil in the valleys maintains debris capture ability, resolving the contradiction between these two functions
Solution Approach 2:
Different functional properties are assigned to different locations: hydrophobic wax on peaks for residue prevention and hydrophilic oil in valleys for debris capture. This local quality differentiation allows the sheet to simultaneously achieve both residue-free cleaning and effective debris capture
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, improving cleaning performance and reducing sticky sensations by controlling the distribution of oil and wax.
Implementation Method 1
Wax is disposed on the first surface; and oil is disposed on the second surface of the sheet... effectively capturing debris in the valleys
Implementation Method 2
The sheet effectively captures debris without leaving residue on the target surface... by controlling the distribution of oil and wax
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.