Non-toxic Glue Composition for Children's Crafts
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Solution Overview
Problem
Existing glues and adhesives are hazardous for children due to toxic ingredients, making them unsuitable for arts and crafts, and lack easy removal from skin and clothing, posing health risks.
Innovation Solution
A non-toxic glue composition comprising a mixture of short-length fibrous material (≤5mm), poly(vinyl alcohol) or pine resin as adhesive, and a water-soluble preservative, with a pre-mix formulation for safe and effective bonding of children's toys and crafts, allowing easy removal with water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional adhesive formulations are used to provide strong bonding, then adhesive strength is improved, but toxicity and health risks increase making them unsuitable for children
Solution Approach 1:
The patent changes the chemical composition parameters by using water-soluble adhesives (polyvinyl alcohol, pine resin) instead of conventional toxic solvents and adhesive agents. This parameter substitution maintains bonding functionality while eliminating toxicity, allowing the glue to be safe for children's use.
Solution Approach 2:
The invention creates a composite glue composition combining water-soluble adhesive components with natural preservatives (sodium benzoate, potassium sorbate) and optional natural colorants. This composite formulation achieves both safety for children and effective bonding performance through the synergistic combination of multiple benign components.
2Strength
If strong adhesive formulations are used for bonding, then bonding strength is improved, but ease of removal from skin and clothing deteriorates
Solution Approach 1:
The patent changes the solubility parameter of the adhesive by selecting water-soluble polymers (polyvinyl alcohol) and natural resins (pine resin) that can form strong bonds when dry but dissolve easily in water. This allows the glue to provide adequate bonding strength during use while enabling easy removal from skin and clothing with water.
3Strength
If fibrous material with longer fibres is used to improve bond strength, then adhesive strength is improved, but workability and aesthetic appearance deteriorate due to string formation and gritty consistency
Solution Approach 1:
The patent changes the physical dimension parameter of the fibrous material by strictly controlling fiber length to not greater than 5mm. This parameter control prevents long fibers from forming strings and creating gritty consistency, while short fibers still provide adequate friction and bonding strength for plastic toys and craft materials.
4Reliability
If conventional preservatives are used to prevent bacterial growth, then preservation effectiveness is improved, but toxicity increases making the product unsafe for children
Solution Approach 1:
The patent uses food-grade preservatives (sodium benzoate, potassium sorbate) that are naturally occurring or easily biodegradable substances. These preservatives provide adequate protection against bacterial growth in the aqueous glue formulation while being non-toxic and safe for children, replacing conventional toxic industrial preservatives.
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 glue composition provides a strong, temporary bond suitable for children's use, ensuring safety and ease of removal, while maintaining bonding strength and aesthetic appeal, without causing health issues or skin irritation.
Implementation Method 1
the fibrous material increases the friction between the surfaces of articles being bonded together so that they do not slide easily over one another
Implementation Method 2
they have the ability to absorb the aqueous solution and, thus, improve the strength of the bond created between the surfaces of the articles being bonded together
Implementation Method 3
an aqueous solution containing (i) a water-soluble adhesive component selected from PVOH (poly(vinyl alcohol)) or pine resin
Data Source
AI summary
A non-toxic glue composition suitable for use by children comprises a mixture of (a) a non-toxic fibrous material having a fibre length not greater than 5mm and (b) an aqueous composition containing (i) a water-soluble adhesive component selected from PVOH (poly (vinyl alcohol)) or pine resin, (ii) a water-soluble or water-miscible, non-toxic preservative, wherein the glue composition comprises 1 to 20% fibrous material, 5 to 60% adhesive component and 1 to 10% preservative, all percentages being by weight based on the total weight of the glue composition. The glue composition provides a strong but temporary bond and can be used by children to enhance their play with model toys and building bricks. The glue composition can be formed by adding a pre-mix containing soluble and non-soluble components to water. The pre-mix may be a dry mixture or in the form of a paste or plastic mass which can be moulded.