Solid Cleanser Composition Using Starch and Sodium Cocoyl Isethionate

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Solution Overview

Problem

Conventional liquid cleansers are environmentally unsustainable, cause skin and scalp issues due to chemical surfactants, and lack natural ingredients for long-term use, while solid cleansers face challenges in maintaining form and foaming ability.

Innovation Solution

A solid cleanser composition using starch, sodium cocoyl isethionate, glycerin, and natural plant extracts, excluding sulfate-based surfactants and preservatives, which are mixed, kneaded, and molded to create a durable, eco-friendly product with excellent foaming and cleaning efficacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional liquid cleansers are used, then cleaning effect is achieved, but environmental sustainability deteriorates due to plastic packaging and water waste

Engineering Contradiction:
Improveenvironmental sustainabilityVSAvoidconvenience of use
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The invention changes the physical state parameter of the cleanser from liquid to solid form. This transformation eliminates the need for plastic packaging and reduces water content from up to 80% to minimal levels, thereby improving environmental sustainability while maintaining cleaning effectiveness through the solid bar format

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The solid cleanser employs a composite material system combining starch (natural polymer), sodium cocoyl isethionate (surfactant), glycerin (humectant), and natural plant extracts. This composite formulation achieves the desired solid structure, foaming capability, and cleaning performance without requiring conventional liquid cleanser additives or packaging

Inventive Principle:
Principle #40Composite materials

2Power

If sulfate-based surfactants are used, then foaming ability is improved, but skin and scalp health deteriorates due to irritation and toxicity

Engineering Contradiction:
Improvefoaming abilityVSAvoidskin irritation and hair loss
Core Design Contradiction:
PowerVSObject-affected harmful factors

Solution Approach 1:

The invention changes the chemical composition parameter by replacing sulfate-based surfactants with sodium cocoyl isethionate, a non-sulfate surfactant derived from coconut oil. This substitution maintains adequate foaming ability while eliminating the skin irritation, toxicity, and hair loss issues associated with conventional sulfate surfactants

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention converts potentially harmful chemically synthesized surfactants into beneficial natural plant-derived surfactants. Sodium cocoyl isethionate, derived from coconut oil, provides the necessary cleansing and foaming functions while being gentle on skin and scalp, thus converting the harm of synthetic chemicals into the benefit of natural, biodegradable alternatives

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

3Object-affected harmful factors

If solid cleanser form is used, then environmental friendliness is improved, but foaming ability and cleaning efficacy deteriorate

Engineering Contradiction:
Improveenvironmental friendlinessVSAvoidfoaming and cleaning efficacy
Core Design Contradiction:
Object-affected harmful factorsVSPower

Solution Approach 1:

The solid cleanser employs a composite material system combining starch (natural polymer), sodium cocoyl isethionate (surfactant), glycerin (humectant), and natural plant extracts. This composite formulation achieves the desired solid structure, foaming capability, and cleaning performance without requiring conventional liquid cleanser additives or packaging

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The invention copies the essential functional components of liquid cleansers (surfactant, humectant, natural extracts) into a solid matrix structure. By incorporating these functional ingredients into the solid bar format, the invention replicates the cleaning and foaming effects of liquid cleansers while eliminating the environmental drawbacks of liquid formulation

Inventive Principle:
Principle #26Copying

4Object-affected harmful factors

If natural plant-derived ingredients are used, then safety and naturalness are improved, but product stability and shelf life deteriorate due to lack of preservatives

Engineering Contradiction:
Improvesafety for skin and hairVSAvoidshelf life and usability period
Core Design Contradiction:
Object-affected harmful factorsVSDuration of action of stationary object

Solution Approach 1:

The solid cleanser formulation is designed with a high surfactant content (60-80% of total weight) and minimal water content, creating a product that is stable at room temperature and does not require chemical preservatives. The product maintains its natural, safe composition throughout its usable life, and the solid format prevents microbial growth that would otherwise require preservative additives

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The invention changes the water content parameter from high (up to 80% in liquid cleansers) to minimal levels in the solid format. This parameter change naturally prevents microbial growth and eliminates the need for chemical preservatives, maintaining both safety and adequate shelf life through physical state modification rather than chemical additives

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 solid cleanser is non-irritating, biodegradable, effective in preventing hair loss and skin issues, maintains solid form, and provides enhanced foaming and cleaning performance without the need for plastic packaging, making it safe for long-term use.

Implementation Method 1

Surfactants serve to improve the cleaning effect by acting on oil and fat components of the skin, hair and scalp surfaces

Methodology Applied
Scientific EffectSurfactant: Surfactant

Implementation Method 2

a solid type cleanser including starch, sodium cocoyl isethionate (ISC), glycerin and natural plant extracts could be used for a long time due to not being easily softened

Methodology Applied
Scientific EffectHydrogen bonding:

Data Source

PatentUS20230108084A1Solid cleanser composition
Publication Date: 2023.04.06 SHIM YEONJEONG

AI summary

The present invention relates to a solid cleanser composition including starch, sodium cocoyl isethionate, glycerin, and a conditioning agent as active ingredients. The solid cleanser composition and the method for preparing the same can prevent side effects of the skin, such as skin itching and hair loss, since not including sulfate-based surfactants, and preservatives. In addition, the solid cleanser which includes sodium cocoyl isethionate, glycerin and natural plant extracts is not easily softened and does not crumble easily to provide excellent usability, and provides excellent foaming and cleaning ability.