Water-Soluble Bleach Pouch Cleaning Head for Toilet Biofilm Disinfection
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Solution Overview
Problem
Current toilet cleaning tools lack effective disinfection capabilities, particularly in removing biofilms, and often pose risks of unintended bleach release, which can stain surfaces.
Innovation Solution
A cleaning tool with a handle and a nonwoven material pouch containing a solid bleach and surfactant composition that dissolves in water, providing a 3-log reduction in Staphylococcus aureus within 5 minutes, while minimizing the risk of premature bleach release and staining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid bleach is used for disinfection, then disinfection efficacy is improved, but risk of inadvertent release and staining increases
Solution Approach 1:
The patent transforms bleach from liquid form to solid form (bleach granules or tablets), fundamentally changing the physical state parameter. This solid form maintains the active disinfecting ingredients while eliminating the uncontrolled flow and spill risks associated with liquid bleach, thereby reducing staining risk while preserving disinfection efficacy
Solution Approach 2:
The patent employs a water-soluble pouch or film to contain the solid bleach. This thin film acts as a controlled release mechanism that prevents premature release and staining during handling, while dissolving in toilet water to release the bleach for effective disinfection
2Reliability
If solid bleach is contained in a water-permeable pouch, then premature release is prevented, but bleach delivery control complexity increases
Solution Approach 1:
The patent uses a disposable water-soluble pouch that is simple in design but effective in function. The pouch is discarded after a single use, eliminating the need for complex reusable containment systems with multiple components. The simplicity of the single-use pouch reduces device complexity while effectively preventing premature release
Solution Approach 2:
The water-soluble pouch acts as an intermediary between the solid bleach and the toilet water. It provides a simple barrier that prevents direct contact during handling, then dissolves to allow bleach release during use, thereby simplifying the overall system while achieving reliable containment
3Productivity
If bleach is released quickly for disinfection, then disinfection speed is improved, but risk of staining surrounding surfaces increases
Solution Approach 1:
The patent positions the solid bleach within the water-soluble pouch at the cleaning head, ready for immediate use. When activated, the pouch dissolves and releases bleach directly into the toilet water, ensuring rapid disinfection action while the pouch structure maintains containment during the brief period before activation, preventing premature staining
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 tool effectively disinfects toilet surfaces, achieving a significant reduction in bacterial load while preventing unwanted bleach release and staining, making it convenient and safe to use.
Implementation Method 1
The solid cleaning composition may include at least a solid bleach (e.g., a solid bleach and a solid surfactant). The cleaning composition may dissolve in water and releases from the nonwoven material
Implementation Method 2
the solid bleach may be contained within a closed but water permeable 'pouch' of the cleaning head, to better control its release therefrom
Data Source
AI summary
Cleaning tools for cleaning toilets, particularly the interior of a toilet bowl, where bleach is provided within the cleaning tool itself, e.g., in a disposable, single use cleaning head. The tool may include a handle, a cleaning head attachable to the handle, a nonwoven material having an exterior surface and an interior surface, and a solid cleaning composition stored adjacent to the interior surface of the nonwoven material. The solid cleaning composition includes solid bleach, and may also include a solid surfactant. The cleaning composition may be confined within the nonwoven material (e.g., in a pouch), but upon contact with water, dissolved cleaning composition is able to migrate through the nonwoven material, through a scrubbing layer, and be delivered to the surface being cleaned. Release may achieve at least a 3-log reduction in Staphylococcus aureus within 5 minutes.