Block-Shaped Sanitary Agent with Powder Coating for Adhesion
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Solution Overview
Problem
Existing sanitary agents for toilets often have inadequate adhesion to moistened surfaces, leading to poor sticking performance, especially with complex geometries and requiring protective films that can be unhygienic and inconvenient to use.
Innovation Solution
A block-shaped sanitary agent with a powder layer on at least one side, allowing for improved adhesion by facilitating moisture penetration and swelling, which enhances sticking without direct hand contact and allows for complex geometries, using powders like celluloses, polysaccharides, and surfactants that are safe and non-sticky.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a water-soluble film is used to cover the block-shaped agent, then the agent can be gripped without direct hand contact, but the adhesion to the moistened surface becomes inadequate and the block may drop into the bowl
Solution Approach 1:
The invention removes the water-soluble film that was previously used to cover the block-shaped agent. Instead, a powder layer is applied directly to the block surface, eliminating the film's interference with adhesion while still preventing hand contamination during handling.
Solution Approach 2:
The invention uses a porous powder layer (5-800 μm thickness) instead of a non-porous film. This porous structure allows moisture to penetrate through to the block surface for adhesion while providing a barrier that prevents direct hand contact with the agent, solving both contamination and adhesion problems.
2Object-affected harmful factors
If a water-soluble film covers the block, then the agent can be handled safely, but the block geometry is limited to simple shapes that match the film
Solution Approach 1:
The invention extracts and removes the constraining water-soluble film, allowing blocks to be manufactured in complex geometries without being limited by film matching. The powder layer is applied directly to the block surface regardless of shape.
Solution Approach 2:
The powder layer serves multiple functions universally applicable to any block shape: it prevents hand contamination, allows moisture penetration for adhesion, and does not constrain block geometry. This universal solution replaces the shape-specific film approach.
3Object-affected harmful factors
If a protective film is used on the block, then hand contact is prevented, but the film must be removed and disposed of which is unhygienic and inconvenient
Solution Approach 1:
The invention removes the separate protective film component entirely. The powder layer remains on the block during handling and automatically serves its protective function without requiring removal or disposal, eliminating the unhygienic film removal step.
Solution Approach 2:
The powder layer provides self-service by continuously preventing hand contamination during handling without requiring user intervention to remove or dispose of it. The powder remains in place and performs its protective function automatically throughout the application process.
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 powder layer enables rapid and secure adhesion to toilet surfaces, reducing the risk of contamination and improving sticking performance compared to water-soluble films, allowing for effective cleaning and deodorization with reduced agent loss during flushing.
Implementation Method 1
a layer of powder particles of thickness between 5 μm and 800 μm... facilitates moisture penetration and swelling
Data Source
AI summary
Agent for cleaning and/or deodorizing for use in the sanitary field which is used to adhere to a moistened surface of a sanitary object and gradually to dissolve as it is flushed with water, which agent includes a cleaning block including tensides (10), wherein the surface (12) of the cleaning block is sticky, or becomes sticky in the presence of water, wherein the block (10) has on at least one side of its surface (12) a coating (13) of powder particles (14) to a thickness between 5 μm and 800 μm.