Borate-Free Play Compound Mixing for Consistent Home Preparation

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Solution Overview

Problem

Existing methods for making play compounds at home are difficult, require hard-to-obtain ingredients like borates, and often result in unsatisfactory products compared to factory-made versions, posing safety and environmental concerns.

Innovation Solution

A method and apparatus for forming a play compound using a powder and liquid mixture, where the powder is pre-mixed under factory conditions to ensure consistent results, eliminating borates, and allowing users to create compounds with desired characteristics through controlled mixing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If borates are used to make play compounds at home, then the compound can be formed, but safety and environmental concerns arise

Engineering Contradiction:
Improvecompound formation reliabilityVSAvoidsafety and environmental harm
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent removes borates from the play compound formulation entirely, extracting the harmful substance while maintaining the core functionality of the compound through alternative safe ingredients

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent uses common, easily obtainable household ingredients like white glue and baking soda that are safe for children, replacing expensive and hazardous chemical substances with accessible, benign alternatives

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

2Ease of manufacture

If home-made play compounds are made using available ingredients, then accessibility is improved, but the compound quality and performance deteriorate compared to factory-made versions

Engineering Contradiction:
Improveingredient accessibilityVSAvoidcompound quality consistency
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent specifies precise pre-measured proportions of ingredients (e.g., 1 part glue to 2 parts baking soda solution) that must be mixed in advance, ensuring consistent factory-quality results when made at home by eliminating ratio errors

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent modifies the chemical parameters of the formulation by using specific safe substitutes (white glue as PVA adhesive, baking soda as sodium bicarbonate) with controlled concentrations to achieve the desired non-Newtonian fluid properties without borates

Inventive Principle:
Principle #35Parameter changes

3Object-affected harmful factors

If complex mixing procedures are used to make borate-free play compounds, then safety is improved, but the difficulty of preparation increases

Engineering Contradiction:
ImprovesafetyVSAvoidpreparation simplicity
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent divides the mixing process into clear sequential steps: first mixing glue with water, then separately mixing baking soda with liquid, and finally combining the two solutions, making the complex procedure manageable and error-proof for home users

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent uses water as an intermediary substance to dissolve both the glue and baking soda separately before combining them, simplifying the mixing process and ensuring complete dissolution of ingredients for consistent results

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enables the production of high-quality play compounds with factory-like performance at home, ensuring safety and environmental compliance, while allowing user customization and enjoyment.

Implementation Method 1

mixing means which, when operated, cause agitation and mixture of the play compound components and a liquid located in the cavity, to form the play compound

Methodology Applied
Scientific EffectAgitation and mixing: Stirring

Data Source

PatentEP4386045B1Apparatus and a method for the preparation of a play, craft and/or toy compound
Publication Date: 2026.03.25 WECOOL TOYS INC
  • EP4386045B1 patent drawingFigure 1a~1c
  • EP4386045B1 patent drawingFigure 2a~2c
  • EP4386045B1 patent drawingFigure 3a~3c

AI summary

There is provided in accordance with the invention apparatus and a method for producing a play compound and the play compound itself which, in one embodiment is a compound which sufficiently fluid to be pliable and is typically cold and slimy to the touch and which, in one embodiment does not contain any borates. The apparatus and a method provide a powder and liquid to a user, which can be a non-skilled person and thereby allow the mixing of the powder and liquid together by that person to form the play compound outside of a factory environment whilst ensuring that the play compound which is formed has the desired characteristics. Most typically the user which performs the mixing can be the end user, such as a child, who will play with the compound and so the formation of the play compound forms a new part of the play experience.