Antiperspirant Stick Split Stream Manufacturing
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Solution Overview
Problem
Current antiperspirant compositions face challenges in effectively combating wetness due to the interference of structurants with the release of active ingredients, leading to reduced efficacy, and existing attempts to enhance water transport with surfactants have been unsuccessful.
Innovation Solution
The use of a surfactant in combination with the split stream manufacturing method, which limits the contact time between the surfactant and antiperspirant active, preventing binding and enhancing the product's efficacy by improving water transport through the product film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If structurants are used to provide product structure, then product stability is improved, but active ingredient release is interfered with leading to reduced efficacy
Solution Approach 1:
The patent divides the product into two separate streams: a hot stream containing structurants and a cold stream containing active ingredients. This segmentation prevents the structurants from interfering with active ingredient release while maintaining product stability, as the two components are combined only at the point of application rather than being mixed throughout the entire product matrix.
Solution Approach 2:
The patent extracts the active ingredients from the structurant-containing matrix by delivering them through a separate cold stream. This extraction approach allows the structurants to perform their stabilizing function without binding or trapping the active ingredients, thereby resolving the contradiction between stability and efficacy.
2Productivity
If surfactants are added to enhance water transport, then water transport through product film is improved, but binding of surfactant to active ingredient occurs reducing efficacy
Solution Approach 1:
The patent segments the surfactant-containing hot stream from the active ingredient-containing cold stream, ensuring that surfactants and active ingredients have minimal contact time. This prevents harmful binding while allowing surfactants to enhance water transport through the product film when they finally mix at application.
Solution Approach 2:
The patent rushes the mixing process by using a split stream manufacturing method where hot and cold streams are combined quickly at the point of application. This rapid mixing minimizes the time surfactants can bind to active ingredients, allowing water transport enhancement to occur without significant loss of efficacy.
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 surfactant and split stream method combination significantly improves antiperspirant efficacy by minimizing binding of the active ingredient, resulting in better water transport and reduced sweat levels, as demonstrated by Red Dot Method measurements and sweat quantity comparisons.
Implementation Method 1
The use of a surfactant in combination with the split stream manufacturing method, which limits the contact time between the surfactant and antiperspirant active, preventing binding and enhancing the product's efficacy by improving water transport through the product film.
Implementation Method 2
The use of a surfactant in combination with the split stream manufacturing method, which limits the contact time between the surfactant and antiperspirant active, preventing binding
Data Source
AI summary
A solid stick antiperspirant composition is provided. The antiperspirant composition includes aluminum zirconium tetrachlorohydrex glycine having a concentration from about 10% to about 35% by weight of the composition, an anhydrous liquid carrier, one or more structurants having a concentration from about 15% to about 25% by weight of the composition, wherein the one or more structurants comprises one or more waxes and a non-ionic exthoxylated linear alcohol having a carbon chain length from about 20 to about 40. The solid stick antiperspirant composition is a single phase.