Bio-sourced Coating for Detergent Tablets

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Solution Overview

Problem

Existing detergent tablets face issues with durability, fracturing, and inefficiencies in dissolution time, often using synthetic polymers that are not environmentally friendly and result in undissolved residues and prolonged wash cycles.

Innovation Solution

A water-soluble coating for detergent tablets using a mixture of bio-sourced polysaccharides and proteins, with a mass proportion of proteins between 1% and 50%, optionally with a humectant, applied via spraying to enhance mechanical resistance and ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If detergent tablets are coated with synthetic polymer coatings (e.g., polyvinyl alcohol), then mechanical resistance to abrasion and impact is improved, but environmental friendliness deteriorates and undissolved residues appear

Engineering Contradiction:

Improvemechanical resistanceVSAvoidenvironmental friendliness

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters of the coating material from synthetic polymers to natural polymers (polysaccharides and proteins). This parameter change maintains the film-forming capability and mechanical protection while improving environmental compatibility and dissolution properties, eliminating undissolved residues.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite coating material formed by the interaction of polysaccharides and proteins. This composite structure creates a film that combines the protective properties of both polymer types, achieving both mechanical resistance and enhanced water solubility for complete dissolution without residues.

Inventive Principle:

Principle #40Composite materials

2Strength

If detergent tablets are coated with water-soluble packaging to improve mechanical properties, then protection during handling is improved, but dissolution time increases and wash cycle duration lengthens

Engineering Contradiction:

Improveprotection during handlingVSAvoiddissolution time

Core Design Contradiction:

StrengthVSLoss of time

Solution Approach 1:

The patent modifies the molecular structure and composition parameters of the coating polymers to optimize the balance between film strength and water solubility. The selected polysaccharide-protein composite has specific molecular weight and hydrophilicity parameters that enable rapid dissolution while maintaining adequate mechanical protection during storage and handling.

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If detergent tablets are coated with bio-sourced polymers to improve environmental friendliness, then environmental compatibility is improved, but tablets adhere to each other and separation becomes difficult

Engineering Contradiction:

Improveenvironmental compatibilityVSAvoidseparation ease

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent creates a coating with specific local surface properties that reduce adhesion between tablets. The polysaccharide-protein composite forms a coating with controlled surface energy and hydrophilicity, creating a non-sticking surface that prevents tablets from adhering to each other during storage while maintaining environmental compatibility.

Inventive Principle:

Principle #3Local quality

4Strength

If detergent tablets are coated with polymer coatings to prevent fracturing, then mechanical durability is improved, but coating cracking appears during storage

Engineering Contradiction:

Improvemechanical durabilityVSAvoidcoating integrity

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The patent employs a composite coating system where polysaccharides and proteins work synergistically. The polysaccharide matrix provides flexibility and crack resistance, while the protein components enhance film strength and adhesion to the tablet core. This composite structure prevents coating cracking during storage while maintaining mechanical durability.

Inventive Principle:

Principle #40Composite materials

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 coating effectively protects tablets from abrasion and impacts, maintains integrity during storage, ensures easy separation, and reduces dissolution time, while being environmentally friendly.

Implementation Method 1

spraying onto the surface of the body a solution comprising: a) from 2% by mass to 80% by mass of a bio-sourced film-forming agent consisting of a mixture of a polysaccharide, preferably a starch, and at least one protein

Methodology Applied

Scientific EffectEvaporation: Evaporation

Data Source

PatentEP4453163B1New coated detergent tablet

Publication Date: 2025.09.10 EUROTAB OPERATIONS

AI summary

The present invention relates to the field of tablets for household and fabric care, in particular detergent tablets. The invention relates in particular to a tablet coated with an environmentally friendly solution based on a mixture of polymers of natural origin, which makes it possible to prevent the tablets from breaking or flaking during production, transportation and use thereof.