Water-Soluble Detergent Sachets With High Active Content
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Solution Overview
Problem
Existing powder detergent sachets face issues of agglomeration, direct skin contact, and overdosing, while current packaging forms limit active substance content and include non-washing components, violating environmental regulations.
Innovation Solution
A sachet detergent composed of two water-soluble sheets containing active washing substances, with a high percentage of active ingredients and separate compartments, ensuring homogeneous distribution and minimizing non-washing packaging material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If two water-soluble sheets are coupled and welded by activation with water/aqueous solution, then the sheets are joined together to form a sachet, but only a small amount of active washing substances and process powder adjuvants can be added inside the sandwich
Solution Approach 1:
A water-soluble adhesive layer is introduced as an intermediary between the two water-soluble sheets. This adhesive layer acts as a mediator that provides stable welding while allowing a larger volume for active washing substances and process powder adjuvants, resolving the contradiction between quantity of substances and welding stability.
2Reliability
If traditional plastic sheets or paper-based films are used to make the sandwich sachet, then the sachet structure is formed, but non-washing components are introduced that must be considered as packaging material
Solution Approach 1:
Both sheets making up the sachet are made from the same water-soluble material, creating a homogeneous structure. This eliminates the need for traditional plastic or paper packaging materials, as the entire sachet structure dissolves in water along with the detergent contents, thereby reducing packaging waste.
3Ease of operation
If powder detergent is exposed to environmental humidity, then the detergent becomes available for use, but it agglomerates into lumps or blocks
Solution Approach 1:
The powder detergent is enclosed within a water-soluble film sachet structure. This flexible thin film barrier protects the powder from environmental humidity, preventing agglomeration while maintaining uniformity. The film dissolves in water to release the powder, providing both protection and availability.
4Ease of operation
If powder detergent is left exposed, then it is easily accessible, but it disperses in the usage environment causing direct contact with user's skin/mucous membranes
Solution Approach 1:
The water-soluble film sachet acts as a protective barrier that contains the powder detergent, preventing dispersion and direct contact with the user's skin and mucous membranes. The film is designed to dissolve in water under controlled conditions, providing protection during handling while enabling release during use.
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 effective washing performance with minimal non-washing residue, reduces skin contact risks, and adheres to environmental regulations by using biodegradable materials.
Implementation Method 1
two sheets of water-soluble material which make up the sachet are mainly composed, unlike what happens in the known art, of active washing substances
Implementation Method 2
said sheets are sealed by wetting with water a peripheral strip of said sheets which are in close contact one with another
Data Source
AI summary
Laundry/cleaning powder detergent in water-soluble sachets consisting of two water-soluble sheets mutually welded at their peripheral portion and containing said powder detergent inside. The formulation of said water-soluble sheets includes at least 30% by weight of active washing substances in water, in a mixture with PVOH and process adjuvants, said mixture being free of thermolabile, oxidizing, hazardous or sensitizing substances.