Topical Spray Composition with Liquid Emulsification System
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Solution Overview
Problem
Existing topical compositions, such as ointments and lotions, are difficult and time-consuming to apply, and there is a need for a consumer-friendly, stable, and easily applied formulation that can deliver skin benefits in a desirable spray pattern without sputtering or mess.
Innovation Solution
A topical spray composition with a substantially all liquid emulsification system having an HLB from 3.0 to 7.0, combined with a package system featuring a pressurized headspace, exit insert with specific dimensions, and a composition that is sprayable with a viscosity of 500 to 4200 cps and surface tension of 22 to 33 mN/m, ensuring homogeneous and continuous application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional topical compositions (ointments, lotions, creams) are used to deliver skin benefit agents, then the benefit agents can be delivered to skin, but the application process is difficult and time-consuming
Solution Approach 1:
The invention utilizes phase transition by formulating a sprayable composition that transitions from liquid to aerosol phase through pressurization, enabling easy spray application. The composition comprises a substantially all liquid emulsification system that can be delivered through a pressurized spray system, transforming the application method from manual rubbing to automated spraying, thereby significantly improving ease of operation and reducing application time
Solution Approach 2:
The invention applies pneumatic principles by using a pressurized spray system to deliver the topical composition. The package system includes a pressurized headspace that propels the composition through a spray mechanism, enabling effortless application without manual rubbing or spreading, thus resolving the contradiction between ease of operation and application time
2Ease of operation
If a spray composition is formulated for easy application, then application becomes quick and consumer-friendly, but the composition may be unstable or produce undesirable spray patterns with sputtering
Solution Approach 1:
The invention applies parameter changes by carefully controlling the HLB value of the liquid emulsification system within a specific range (3.0 to 7.0) and adjusting viscosity (500 to 4200 cps) and surface tension (22 to 33 mN/m) to optimal levels. These parameter optimizations ensure the composition remains stable while maintaining sprayability, preventing sputtering and mess, thus resolving the contradiction between ease of application and spray stability
Solution Approach 2:
The invention uses a composite emulsification system combining multiple liquid emulsifiers with complementary HLB values to create a synergistic formulation. This composite approach enhances both stability and spray performance, allowing the composition to deliver a desirable continuous spray pattern while remaining chemically stable during storage and application
3Ease of manufacture
If a low HLB emulsification system is used in spray composition, then the composition may be easier to formulate, but it is typically unstable and difficult to spray homogeneously
Solution Approach 1:
The invention transforms the typical understanding of HLB requirements by demonstrating that a low HLB range (3.0 to 7.0) can indeed be used for spray compositions, contrary to conventional wisdom. Through precise control of related parameters including viscosity and surface tension, the invention achieves both ease of formulation and exceptional stability, resolving the contradiction between formulation ease and emulsion stability
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 provides a stable, easy-to-apply topical spray composition that delivers skin benefits homogeneously and quickly, avoiding sputtering and mess, with a controlled spray pattern and efficient absorption, making it more appealing to consumers who prefer quick and mess-free application.
Implementation Method 1
a package with a headspace of about 30 to 55% and capable of being pressurized to 75 to 155 psi
Implementation Method 2
The spray composition is surprisingly stable, notwithstanding the low HLB emulsification system employed, and capable of being applied homogeneously to skin
Implementation Method 3
a substantially all liquid emulsification system that has an HLB from about 3.0 to about 7.0
Implementation Method 4
a composition that is sprayable, has a viscosity from about 500 to about 4200 cps and a surface tension from about 22 to about 33 mN/m
Implementation Method 5
a composition suitable to be quickly absorbed into skin
Data Source
AI summary
A topical spray composition and a system for containing and applying the composition is described. The composition has liquid emulsifiers that unexpectedly result in a superior product suitable to be applied homogeneously.