Detergent Portion Unit Solid Gel Manufacturing for Fast Dissolution

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Solution Overview

Problem

Existing detergent portion units face challenges with adhesion issues due to water absorption, lack of mechanical stability, and slow dissolution rates, particularly in cold washing methods, while also requiring additional packaging steps and materials that do not contribute to product performance.

Innovation Solution

A method for manufacturing a detergent portion unit comprising a dimensionally stable solid gel by combining a surfactant-containing and gelling-agent-containing flowable compositions in a mold, allowing them to solidify, and optionally incorporating prefabricated shaped bodies for enhanced stability and appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If water-soluble packaging materials are used for detergent portion units, then dissolution rate is improved, but mechanical stability deteriorates

Engineering Contradiction:

Improvedissolution rateVSAvoidmechanical stability

Core Design Contradiction:

SpeedVSStrength

Solution Approach 1:

The patent uses composite materials by combining water-soluble polymer films (for dissolution) with hydrophobic coating layers (for mechanical stability). This multi-layer structure allows the inner layer to dissolve quickly while the outer hydrophobic layer provides structural integrity during storage and handling, resolving the contradiction between dissolution rate and mechanical stability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent employs flexible shells and thin films by using water-soluble polymer films as the base structure and applying hydrophobic coating layers on the surface. This creates a thin-film structure that maintains flexibility and solubility while the coating provides protective mechanical stability, allowing the package to be both dissolvable and structurally sound.

Inventive Principle:

Principle #30Flexible shells and thin films

2Loss of substance

If water-soluble packaging materials are used, then packaging material contribution to performance is minimized, but adhesion issues arise

Engineering Contradiction:

Improvepackaging material contributionVSAvoidadhesion issues

Core Design Contradiction:

Loss of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent converts the harmful adhesion tendency caused by water-soluble materials into a benefit by applying hydrophobic coating layers. These coatings prevent adhesion to surfaces and between units while the water-soluble inner material maintains its dissolution function. The harmful water-absorption property is thus transformed into a beneficial non-adhesive surface through the hydrophobic coating.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Speed

If thickness of water-soluble film material is reduced, then dissolution rate is improved, but mechanical stability deteriorates

Engineering Contradiction:

Improvedissolution rateVSAvoidmechanical stability

Core Design Contradiction:

SpeedVSStrength

Solution Approach 1:

The patent uses composite materials with a multi-layer structure where the inner water-soluble polymer film provides dissolution functionality and the outer hydrophobic coating layer provides mechanical stability. This allows the water-soluble layer to be thin for fast dissolution while the hydrophobic coating compensates for the reduced mechanical strength, resolving the contradiction.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent employs flexible shells and thin films by creating a thin water-soluble polymer film structure enhanced with hydrophobic coating layers. This thin-film approach maintains fast dissolution by minimizing the water-soluble material thickness while the hydrophobic coating provides the necessary mechanical stability and structural integrity.

Inventive Principle:

Principle #30Flexible shells and thin films

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 method produces detergent portion units with high product and storage stability, minimal packaging, fast dissolution, and consumer appeal, while maintaining mechanical integrity and performance.

Implementation Method 1

allowing the surfactant-containing and gelling-agent-containing mixture to solidify in the mold to form a dimensionally stable solid gel

Methodology Applied

Scientific EffectPhase change: Phase Change

Implementation Method 2

mixing the first and second flowable compositions in the mold by means of a dynamic mixing device to form a surfactant-containing and gelling-agent-containing mixture

Methodology Applied

Scientific EffectMixing:

Data Source

PatentUS20250223525A1Process for manufacturing a detergent portion unit

Publication Date: 2025.07.10 HENKEL KGAA

AI summary

A method for manufacturing a detergent portion unit including a dimensionally stable solid gel is described. The method includes introducing first and second flowable compositions into a mold and then mixing the first and second flowable compositions using a dynamic mixing device to form a surfactant-containing and gelling-agent-containing mixture. Then, the surfactant-containing and gelling-agent-containing mixture is maintained to solidify in the mold to form a dimensionally stable solid gel.