Disposable Toilet Seat Cover With Soluble Barrier and Anti-Slip Tabs
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Solution Overview
Problem
Public toilet seats often harbor disease-causing bacteria and viruses, and existing solutions like toilet paper or paper seat covers fail to provide effective barriers due to slippage and moisture penetration, while more advanced options like motorized systems are costly and cumbersome, and portable plastic covers are heavy and require cleaning.
Innovation Solution
A disposable, water-soluble toilet seat cover composed of a biodegradable tissue paper base layer and a cold-water soluble polyvinyl alcohol top layer, with adhesive tabs to secure the cover in place and prevent moisture penetration, which dissolves quickly in water for easy flushing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If toilet paper or paper seat covers are used to cover the toilet seat, then a barrier between the user and the seat is provided, but the paper has a tendency to move during use and moisture from the seat soaks through to the skin of the user
Solution Approach 1:
The seat cover comprises a composite structure with an outer impermeable layer (polymer film) that prevents moisture penetration, an intermediate absorbent layer (paper or fabric) that absorbs excess moisture, and an inner adhesive layer that secures the cover to the seat surface. This multi-layer composite design simultaneously provides moisture barrier protection, absorbency, and anti-slippage adhesion.
Solution Approach 2:
Different regions of the seat cover have different properties: the outer surface is made impermeable and water-resistant, the intermediate layer is highly absorbent, and the inner surface has adhesive properties for securing. This local differentiation of material properties allows each layer to perform its specific function optimally, preventing both moisture penetration and slippage.
2Object-affected harmful factors
If paper seat covers are oversized to drape down the sides of the toilet bowl or taped to the seat, then moisture penetration is prevented, but the device complexity and ease of operation are reduced
Solution Approach 1:
The seat cover uses a flexible polymer film outer layer that can conform to the contours of the toilet seat while maintaining its impermeable barrier properties. This thin film structure provides effective moisture protection without requiring excessive material or complex shaping, and the flexibility allows easy placement and adjustment on the seat.
Solution Approach 2:
The adhesive layer is designed to be self-activating or self-adhering, allowing the seat cover to secure itself to the seat surface without requiring external fasteners, tapes, or complex attachment mechanisms. The user simply places the cover on the seat, and the adhesive properties automatically secure it in place.
3Extent of automation
If motorized seat covers are used, then automatic cover change is achieved, but the device complexity and cost increase significantly
Solution Approach 1:
The seat cover is designed as a disposable single-use product made from inexpensive materials. After one use, the entire cover is discarded and replaced with a fresh one. This eliminates the need for complex motorized mechanisms, sensors, or automated systems, while still providing effective protection and hygiene. The low cost and simplicity of the disposable approach resolve the contradiction between automation and complexity.
4Object-affected harmful factors
If hard plastic covers are used for travel, then protection from germs is provided, but the weight and space requirements increase
Solution Approach 1:
The seat cover uses a thin, flexible polymer film that provides effective germ and moisture barrier protection while being extremely lightweight and compact. When not in use, the covers can be stored in a compact dispenser or package, taking minimal space. This thin-film approach replaces heavy hard plastic covers while maintaining protective functionality and dramatically reducing weight and storage requirements for travel.
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 solution effectively prevents moisture penetration, keeping users dry and clean, and is lightweight, easy to use, and environmentally friendly, as it decomposes in the sewage system.
Implementation Method 1
adhesive tabs to secure the cover in place
Implementation Method 2
a cold-water soluble polyvinyl alcohol top layer... that is impermeable to moisture that forms a barrier between the user and the toilet seat
Implementation Method 3
cold-water soluble polyvinyl alcohol top layer... dissolves quickly in water for easy flushing
Implementation Method 4
biodegradable tissue paper base layer... decomposes in the sewage system
Data Source
AI summary
A disposable, biodegradable toilet seat cover is described. The toilet seat cover is formed of two or more layers including a top layer formed of a cold water soluble film, such as PVA, and a base layer formed of a tissue paper, such as toilet paper. The layers are held together by a water-soluble adhesive or glue. In use, the base layer absorbs moisture from the toilet seat and the top layer keeps the moisture away from the user. The top layer dissolves in cold water and the base layer decomposes in the plumbing system.