High-Water Soap Bar Composition With Gel-Assisted Extrusion

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing soap bar compositions face challenges in achieving high water content while maintaining sufficient hardness for easy extrusion and stamping, as conventional methods result in sticky and difficult-to-stamp bars.

Innovation Solution

A soap bar composition with 15 to 45 wt% water and a sodium alumino silicate gel with a SiO2/Al2O3 mole ratio less than 5.0, combined with a process involving sodium aluminate and sodium silicate mixing and extrusion, enables the production of rigid and easily stampable bars.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If high water content (15-45 wt%) is incorporated into soap bar composition, then sustainability and skin-friendliness are improved, but extrusion difficulty and stickiness increase

Engineering Contradiction:
Improvewater contentVSAvoidextrusion ease
Core Design Contradiction:
Quantity of substanceVSEase of manufacture

Solution Approach 1:

Sodium alumino silicate gel acts as a mediating substance between water and soap matrix. The gel network structure provides a framework that holds water within its pores, preventing free water from causing stickiness during extrusion. This intermediary structure allows high water content (15-45 wt%) to be incorporated while maintaining extrusion ease and bar hardness.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Quantity of substance

If high water content is used to reduce TFM, then sustainability is improved, but bar hardness and structural integrity deteriorate

Engineering Contradiction:
Improvewater contentVSAvoidbar hardness
Core Design Contradiction:
Quantity of substanceVSStrength

Solution Approach 1:

The sodium alumino silicate gel introduces a porous structure into the soap bar matrix. The gel's three-dimensional network contains numerous pores that trap and hold water molecules. This porous architecture provides structural support that compensates for the softening effect of water, maintaining bar hardness and structural integrity even at high water contents of 15-45 wt%.

Inventive Principle:
Principle #31Porous materials

3Stability of the object's composition

If conventional structuring agents (aluminium phosphate, calcium silicate) are used, then bar structure is improved, but skin-friendliness deteriorates

Engineering Contradiction:
Improvebar structureVSAvoidskin-friendliness
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The invention changes the chemical composition parameters of the structuring agent by using sodium alumino silicate gel with specific SiO2/Al2O3 mole ratio (less than 5.0). This parameter change transforms the chemically reactive aluminium phosphate or calcium silicate into a biocompatible gel structure that is gentle on skin while providing the necessary structural support for the soap bar.

Inventive Principle:
Principle #35Parameter changes

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 composition and process allow for soap bars with high water content to be extruded and stamped easily, maintaining structural integrity and hardness, overcoming the limitations of previous methods.

Implementation Method 1

1.0 to 15.0 wt % sodium alumino silicate gel wherein the SiO2/Al2O3 mole ratio of the sodium alumino silicate gel is less than 5.0

Methodology Applied
Scientific EffectGel structuring: Gel

Data Source

PatentUS12606778B2Soap bar
Publication Date: 2026.04.21 CONOPCO INC
  • US12606778B2 patent drawing
  • US12606778B2 patent drawing

AI summary

The present invention relates to an extruded soap bar composition. It more particularly relates to a soap bar composition which comprises specified type of sodium alumino silicate gel to produce soap bars with high water content that are not only easy to extrude but have the desired hardness.