Wax Dispersion Coating for Non-Greasy Wipe Sensory Properties
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Solution Overview
Problem
Current tissue paper coatings for wet and dry wipes lack improved sensory properties, often leaving skin feeling greasy and with slow release of active ingredients, and have stability issues during storage, while also being costly and odor-intensive to produce.
Innovation Solution
Development of wax dispersions with specific oil or wax components and emulsifiers, having a particle size in the micrometer range, which are easy to apply and provide caring, non-greasy skin feel, efficient active ingredient release, and improved dermatological compatibility, using dialkyl(ene) ethers, dialkyl(ene) carbonates, dicarboxylic acids, or hydroxyfatty alcohols with a melting point above 25°C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional tissue paper coatings are used to improve softness, then skin feel is improved, but the skin feels greasy and active ingredient release is slow
Solution Approach 1:
The patent changes the physical and chemical parameters of the coating composition by using wax dispersions with specific particle size ranges (0.5-100 μm), specific wax components with defined melting points (>25°C), and specific emulsifier types. These parameter changes result in a coating that provides softness without the greasy feeling associated with conventional coatings.
Solution Approach 2:
The patent employs composite material formulation by combining wax components (such as dialkyl(ene) ethers, dialkyl(ene) carbonates, dicarboxylic acids, or hydroxyfatty alcohols) with specific emulsifiers and water to create a dispersion system. This composite approach allows the coating to deliver multiple functions: softness, non-greasy feel, and efficient active ingredient release.
2Ease of operation
If conventional coatings are applied to improve sensory properties, then skin care effect is enhanced, but storage stability deteriorates and coating sinks to bottom
Solution Approach 1:
The patent optimizes the particle size parameter of the wax dispersion to 0.5-100 μm, which prevents sedimentation during storage while maintaining sensory properties. The melting point parameter of the wax components is set above 25°C to ensure stability. These parameter controls prevent the coating from sinking to the bottom during prolonged storage.
Solution Approach 2:
The patent uses specific emulsifiers as intermediary substances to stabilize the wax dispersion system. These emulsifiers prevent phase separation and maintain uniform distribution of wax particles in the aqueous phase, thereby ensuring storage stability while preserving the sensory properties of the coating.
3Ease of operation
If conventional softening formulations are used to improve paper softness, then sensory impression is improved, but manufacturing cost increases and odors are intense
Solution Approach 1:
The patent changes the formulation parameters by using wax components with melting points above 25°C and specific emulsifier concentrations. This allows cold application of the coating without requiring high-energy processing, thereby reducing manufacturing costs while maintaining improved sensory impression on the paper.
Solution Approach 2:
The patent employs readily biodegradable wax components and emulsifiers that can be applied in simple, cost-effective processes. The formulation uses economical concentrations of active ingredients while achieving the desired sensory effects, making the manufacturing process more affordable compared to conventional formulations.
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 wax dispersions offer enhanced sensory and care properties, easy application, improved stability, and dermatological compatibility, ensuring a dry skin feel and efficient release of active ingredients, while being biodegradable and odorless.
Implementation Method 1
wax dispersions with an average particle size of 0.5 to 100 μm containing (a) a wax phase with a melting point above 25° C. which contains at least one oil or wax component selected from dialkyl(ene) ethers, dialkyl(ene) carbonates, dicarboxylic acids or hydroxyfatty alcohols or a mixture of these substances and at least one emulsifier, (b) water phase
Data Source
AI summary
The disclosed invention provides wax dispersions with an average particle size of 0.5 to 100 μm containing (a) a wax phase with a melting point above 25° C. which contains at least one oil or wax component selected from dialkyl(ene) ethers, dialkyl(ene) carbonates, dicarboxylic acids, hydroxyfatty alcohols, and mixtures thereof and at least one emulsifier, and (b) a water phase. The wax dispersions are particularly useful as a basis for cosmetic preparations and, more particularly, for impregnating and wetting utility and sanitary wipes used for personal hygiene and body care.