Double-Walled Antiperspirant Packaging for Uniform Curing
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Solution Overview
Problem
Conventional packaging for solid deodorant and antiperspirant sticks often lacks efficient heat transfer, leading to non-uniform curing and product attributes, such as settling of actives and varying crystal sizes, which affects the 'feel' and efficacy across multiple uses, and increases manufacturing complexity and costs.
Innovation Solution
A double-walled packaging system with a product chamber and an outer jacket, where a hot process stream containing a gellant is cooled by a cold process stream to achieve rapid quenching and uniform crystal nucleation, resulting in an antiperspirant composition with consistent penetration peak force and Hardness Modulus measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional packaging with poor heat transfer is used, then packaging design and material selection are flexible, but product uniformity deteriorates due to non-uniform curing and crystal formation
Solution Approach 1:
The packaging is divided into two functional segments: an inner container for holding the antiperspirant composition and an outer jacket for heat transfer control. This segmentation allows each component to be optimized independently - the inner container maintains product integrity while the outer jacket provides controlled thermal management during curing, resolving the contradiction between packaging flexibility and product uniformity.
Solution Approach 2:
The outer jacket acts as an intermediary thermal management layer between the antiperspirant composition and the external environment. It provides controlled heat transfer during the curing process, ensuring uniform crystal formation and product consistency without requiring complex active cooling systems, thus achieving product uniformity while maintaining reasonable packaging complexity.
2Manufacturing precision
If efficient heat transfer packaging is used, then product uniformity is improved, but packaging design and material selection are limited
Solution Approach 1:
By segmenting the packaging into an inner container and outer jacket, the system achieves efficient heat transfer functionality without sacrificing design flexibility. The inner container can be designed for optimal product protection and dispensing, while the outer jacket provides thermal management, allowing both components to be optimized independently for their specific functions.
Solution Approach 2:
The outer jacket serves multiple functions: it provides structural support for the packaging, enables controlled heat transfer during curing, and can be designed with various materials and finishes for aesthetic purposes. This multi-functionality allows efficient heat transfer packaging to maintain design flexibility and adaptability.
3Device complexity
If conventional packaging is used, then packaging simplicity is maintained, but manufacturing complexity increases due to additional cooling equipment needs
Solution Approach 1:
The packaging system performs the cooling function self-service through its outer jacket, which passively manages heat transfer during the curing process. This eliminates the need for separate active cooling equipment in the manufacturing process, simplifying packaging design while reducing manufacturing complexity by integrating the cooling function directly into the packaging structure.
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 solution ensures uniform product attributes, reducing variability in wetness protection and feel across multiple uses, while simplifying manufacturing by minimizing the need for additional cooling equipment, thereby enhancing product consistency and reducing production costs.
Implementation Method 1
a hot process stream containing a gellant is cooled by a cold process stream to achieve rapid quenching and uniform crystal nucleation
Implementation Method 2
a hot process stream containing a gellant is cooled by a cold process stream to achieve rapid quenching and uniform crystal nucleation
Implementation Method 3
lowering the material process stream to a second temperature that is lower than the first temperature by at least 10° C., but is still above the onset of crystallization of the gellant
Data Source
AI summary
A consumer product comprising packaging including a product chamber and an outer jacket at least partially surrounding the product chamber; and an antiperspirant composition disposed within the product chamber, wherein the composition exhibits an average standard deviation of less than or equal to about 5 of penetration peak force measurements taken in accordance with a penetration test method as defined herein.