Hydrolysable sheet
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Solution Overview
Problem
Conventional wet sheets used for toilet cleaning often tear during vigorous rubbing and lack sufficient sterilizing effectiveness, while hydrolysable sheets need to balance strength and hydrolyzability to prevent clogging.
Innovation Solution
A multi-ply base paper sheet with a water-soluble binder, impregnated with an aqueous chemical agent, featuring embossments and a specific pulp ratio, and enhanced with a cross-linking agent and sterilizing agents, which increases the binder content towards the surfaces and incorporates embossments for improved strength and sterilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional wet sheet is used for toilet cleaning, then it can be disposed of by flushing, but it tears during vigorous rubbing
Solution Approach 1:
The water-soluble binder content is increased towards the front surface and back surface of the multi-ply base paper sheet, creating a gradient distribution. This local quality enhancement provides superior surface strength for vigorous rubbing while maintaining hydrolyzability in the core region for reliable disposal
Solution Approach 2:
The invention uses a composite structure combining pulp fibers with water-soluble binder (such as CMC) in a multi-ply configuration. This composite material approach enables the sheet to exhibit both mechanical strength from the fiber-binder matrix and hydrolyzability from the water-soluble components
2Reliability
If a hydrolysable sheet is used for toilet cleaning, then it can be flushed without clogging, but it lacks sufficient sterilizing effect
Solution Approach 1:
The base paper sheet is pre-impregnated with aqueous chemical agents including sterilizing agents and cross-linking agents before final use. This preliminary impregnation ensures that sterilizing functionality is already in place, enhancing the sterilizing effect while maintaining hydrolyzability
Solution Approach 2:
The invention changes the chemical parameters of the sheet by impregnating it with aqueous chemical agents containing sterilizing agents. This parameter modification (adding chemical functionality) enhances the sterilizing effect without compromising the hydrolyzability of the base paper structure
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 provides enhanced resistance to tearing during vigorous rubbing and improved sterilizing effects, ensuring effective cleaning while maintaining hydrolyzability to prevent clogging.
Implementation Method 1
a content of the water-soluble binder increases towards a front surface and/or a back surface
Implementation Method 2
the aqueous chemical agent includes a cross-linking agent that causes the water-soluble binder to initiate a cross-linking reaction
Implementation Method 3
a multi-ply base paper sheet that is substantially water-dispersible
Data Source
AI summary
A toilet cleaning sheet 100 includes a multi-ply base paper sheet that is substantially water-dispersible. The multi-ply base paper sheet contains pulp and a water-soluble binder and is impregnated with an aqueous chemical agent. The basis weight of the multi-ply base paper sheet is 30 gsm to 150 gsm, and the content of the water-soluble binder increases towards a front surface and/or a back surface.