Adjustable-Nozzle Coloring for Deep-Penetrating Powder Cosmetic Cakes
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Solution Overview
Problem
Existing inkjet printing technologies for coloring compact solid powder cosmetic products are limited by the maximum pigment size, which cannot exceed 1 micron to prevent clogging, restricting design possibilities and color application depth.
Innovation Solution
A process using adjustable nozzles to drip colored inks as droplets onto the surface of cosmetic cakes, allowing the ink to penetrate and impregnate the powder, creating various color effects and shades throughout the mass, and enabling the use of pigments of any size without clogging issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If inkjet printing technology is used to color compact solid powder cosmetic products, then color application is achieved, but pigment size is limited to maximum 1 micron to prevent clogging
Solution Approach 1:
The patent replaces the mechanical inkjet printing system with a dripping device that uses gravity and manual control to apply color. This substitution eliminates the clogging issue inherent in inkjet technology by using a simpler droplet delivery mechanism that can accommodate larger pigment particles without requiring precision nozzles.
Solution Approach 2:
The patent changes the delivery method parameter from inkjet spray to dripping, and modifies the pigment size parameter from maximum 1 micron to any size. This parameter change allows the use of larger, more versatile pigments while maintaining color application effectiveness through the impregnation process.
2Reliability
If inkjet printing with small pigments is used, then nozzle clogging is prevented, but color penetration depth and aesthetic effects are limited
Solution Approach 1:
The patent applies color droplets to the surface of the cosmetic compact before final packaging, allowing the color to penetrate and distribute throughout the mass in advance. This preliminary coloring action ensures both reliable operation (no clogging issues) and desired color distribution effects are achieved simultaneously.
Solution Approach 2:
The patent uses the cosmetic compact's own porous structure as an intermediary medium. The droplets are applied to the surface and naturally impregnate into the compact's mass through capillary action, serving as a mediator between the applied color and the final product, ensuring deep penetration and uniform distribution without requiring complex delivery systems.
3Ease of manufacture
If surface-only coloring is used, then application simplicity is maintained, but aesthetic effect and product value are reduced
Solution Approach 1:
The patent allows the cosmetic compact to self-impregnate with color through its own porous structure. When droplets are applied to the surface, the compact naturally absorbs and distributes the color throughout its mass without requiring additional equipment or complex processes. This self-service mechanism maintains manufacturing simplicity while achieving deep, uniform color penetration and diverse aesthetic effects.
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 process achieves deep color penetration and diverse aesthetic effects by impregnating cosmetic cakes with inks, enhancing the product's appearance and functionality, while avoiding nozzle clogging.
Implementation Method 1
the material of which the cake is made is impregnated by capillary action and in depth, taking on different colors and shades
Data Source
AI summary
A process for coloring a solid compact powder cosmetic cake includes dripping ink droplets of various colors and various sizes onto an upper surface of the solid compact powder cosmetic cake, and impregnating the ink droplets into the solid compact powder cosmetic cake.