Fusion-Bonded Cleaning Sheets for Tunable Solution Release
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Solution Overview
Problem
Existing cleaning sheets struggle to properly control the release of cleaning solution from the outer surface, as the property of releasing cleaning solution from the impregnated element to the outer layer sheets is inconsistent, making it difficult to adjust the amount of cleaning solution effectively.
Innovation Solution
A cleaning sheet design featuring hydrophobic and hydrophilic nonwoven fabric sheets with a hydrophilic impregnated element, where the impregnated element is bonded between the nonwoven fabric sheets, and a fusion bonded layer is formed on the inner side to control the release of cleaning solution, with the bonding area and thickness determined to manage the release effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the impregnated element is bonded to the outer layer sheets, then the cleaning solution can be released from the bonded portions, but the amount of release cannot be properly adjusted
Solution Approach 1:
The patent applies local quality by creating a fusion bonded layer only on the inner side of the outer layer sheets facing the impregnated element, while leaving the outer surface hydrophobic. This localized bonding structure allows precise control of cleaning solution release at the bonded portions while maintaining the desired hydrophobic properties at the outer surface.
Solution Approach 2:
The patent utilizes parameter changes by varying the thickness of the fusion bonded layer to control the amount of cleaning solution release. By adjusting this physical parameter, the release property can be precisely tuned without changing the overall structure or materials used.
2Object-affected harmful factors
If the outer layer sheets are made hydrophobic, then cleaning solution release is controlled, but the cleaning solution cannot be effectively released from the outer surface
Solution Approach 1:
The patent segments the outer layer sheet into two distinct functional regions: a fusion bonded layer on the inner side that allows controlled cleaning solution release, and a hydrophobic outer surface that prevents uncontrolled release. This segmentation resolves the contradiction by assigning different functions to different parts of the same component.
Solution Approach 2:
The fusion bonded layer acts as an intermediary between the hydrophilic impregnated element and the hydrophobic outer surface. It mediates the cleaning solution transfer, allowing controlled release from the impregnated element while preventing direct contact with the hydrophobic outer surface, thus balancing both requirements.
3Strength
If the bonding area is increased, then the impregnated element is securely bonded, but the cleaning solution release amount increases uncontrollably
Solution Approach 1:
The patent uses parameter changes by controlling the thickness of the fusion bonded layer to independently adjust bonding strength and cleaning solution release amount. This allows optimization of both bonding strength and release control without direct trade-off, as thickness is a controllable parameter that affects both properties.
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
This design allows for precise control of cleaning solution release, ensuring efficient cleaning while preventing solution contact with the user's fingers and optimizing cleaning solution distribution, enhancing both cleaning efficacy and user safety.
Implementation Method 1
each of the first and second nonwoven fabric sheets has a fusion bonded layer on its side (inner side) facing the impregnated element. In the fusion bonded layer, most of the fibers are joined together by fusion bonding, so that the amount of release of cleaning solution of the impregnated element from the outer surfaces of the first and second nonwoven fabric sheets can be controlled
Implementation Method 2
hydrophobic first and second nonwoven fabric sheets... It is essential for the first and second nonwoven fabric sheets to be generally hydrophobic
Implementation Method 3
a hydrophilic impregnated element impregnated with cleaning solution... the cleaning solution is released from the impregnated element to the first and second nonwoven fabric sheets
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
It is an object of the invention to provide cleaning sheets and cleaning tools to widen cleaning area in a wetted state. A representative cleaning sheet 200 includes a hydrophilic inner layer sheet 210 and hydrophobic outer layer sheets 220, 230. The inner layer sheet 210 is disposed between the outer layer sheets 220, 230 and impregnated with cleaning solution. Fusion bonded layers 222, 232 are formed on inner sides (sides facing the inner layer sheet 210) of the outer layer sheets 220, 230.