Inkjet Coloring of Cosmetic Base Composition
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Solution Overview
Problem
Existing methods for producing cosmetic compositions with multiple colors are cumbersome, difficult to implement at home, and result in bulky assemblies or reduced color options, especially when trying to create compact powder forms with small surface area zones of specific colors.
Innovation Solution
A process using an inkjet printer to rapidly deposit ink onto a base cosmetic composition, ensuring sharp borders between zones by controlling the penetration time of ink and water, allowing for the creation of compact powder compositions with multiple colored zones of small surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cosmetic compositions are produced in compact powder form with small surface area, then the assembly becomes bulky, but the choice of colors is reduced
Solution Approach 1:
The compact powder is divided into multiple colored zones on a single base composition, allowing users to access different colors from the same compact. This segmentation enables multiple color choices without increasing the overall compact volume, as each zone is a distinct area on the powder surface.
Solution Approach 2:
Instead of stacking multiple compacts vertically (which would increase volume), the invention uses horizontal spatial arrangement on the powder surface. Multiple colors are distributed across different zones on the same base composition, utilizing the two-dimensional surface area to provide color variety without compromising compact form factor.
2Adaptability or versatility
If multiple cosmetic compositions are combined in the same case, then color variety is increased, but the assembly becomes bulky and difficult to implement at home
Solution Approach 1:
Multiple colored zones are merged into a single base composition rather than using separate cosmetic compositions. This merging approach provides color variety while simplifying the structure to a single compact assembly, eliminating the complexity of combining multiple separate compositions and making it suitable for home use.
Solution Approach 2:
The base composition serves multiple functions by supporting different colored zones within the same compact. This multi-functional design allows a single compact to provide various color options, eliminating the need for multiple separate compositions and reducing assembly complexity.
3Manufacturing precision
If ink is deposited on the base composition, then colored zones are created, but lateral diffusion blurs the borders between zones
Solution Approach 1:
The penetration time of the ink into the base composition is controlled to be less than 15 seconds. By adjusting this temporal parameter, the ink penetrates sufficiently to create distinct colored zones while minimizing lateral diffusion that would blur the borders. This parameter control ensures sharp zone boundaries are maintained.
Solution Approach 2:
The ink penetration process is accelerated to occur rapidly (within 15 seconds) rather than allowing slow, gradual diffusion. This rushing through of the base composition creates distinct colored zones before significant lateral diffusion can occur, maintaining border sharpness while achieving adequate ink absorption.
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
Enables the production of cosmetic compositions with distinct, sharply defined colored zones, enhancing user choice and makeup flexibility while maintaining compact form and ease of use.
Implementation Method 1
the time needed for the complete penetration, at ambient temperature of 20° C. and under atmospheric pressure, into the base composition of an amount of 20 μl of water deposited at its surface is less than 30 s
Implementation Method 2
the time needed for the complete penetration into the base composition of the same amount, 20 μl, of ink deposited at its surface is less than 15 s
Data Source
AI summary
The present invention relates to a process for colouring a base cosmetic composition, comprising the step consisting in producing, on at least one first zone and one second zone, which are different, at the surface of said composition, two printings of at least one ink originating from an inkjet printer, the base composition and the ink being such that the time needed for the complete penetration, at ambient temperature of 20° C. and under atmospheric pressure, into the base composition of an amount of 20 μl of water deposited at its surface is less than 30 s and such that the time needed for the complete penetration into the base composition of the same amount, 20 μl, of ink deposited at its surface is less than 15 s.