Powder Coating Process for Compact Cosmetics
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Solution Overview
Problem
Existing methods for decorating compact solid cosmetic products, such as blush and eyeshadow, result in uneven surfaces and significant waste due to the deposition of liquid pigmented products on non-desired areas, leading to economic losses and increased cleaning costs.
Innovation Solution
A process using pigmented particulate material in a powder state, applied without a liquid carrier, where a perforated mask is used to expose the desired surface, allowing precise deposition and subsequent suctioning of excess material from non-desired areas, ensuring only the intended surface is coated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If liquid coloured product is sprayed on the surface of the cosmetic product, then decorations can be produced, but a large portion of the product is deposited on non-useful surfaces leading to high waste
Solution Approach 1:
The patent extracts the liquid carrier from the pigmented material, using only the solid pigmented particles suspended in a liquid medium. This allows the particles to be deposited precisely on the desired surface through suction, eliminating waste on non-useful surfaces while maintaining decorative effect.
Solution Approach 2:
The patent employs a suction device (hydraulic/pneumatic system) to control the deposition of pigmented particles. The suction force is applied selectively to remove excess particles from non-useful surfaces, enabling precise control over where the decorative material ends up, thereby reducing waste.
2Ease of manufacture
If liquid coloured product is sprayed on the surface, then decorations can be produced, but cleaning costs increase due to product deposition on non-useful surfaces
Solution Approach 1:
By separating the pigmented particles from the liquid carrier and applying them as a suspension that can be selectively removed, the patent eliminates the need to clean non-useful surfaces. The suction method allows direct deposition only on the desired cosmetic product surface, saving time and resources.
Solution Approach 2:
The suction device automatically removes excess pigmented particles from non-useful surfaces during the deposition process itself, eliminating the need for separate cleaning steps. The system serves both the decoration and the cleanup functions simultaneously.
3Ease of manufacture
If pigmented particulate material is deposited on the pan surface, then the pan appears decorated, but the adhesive properties are exacerbated requiring cleaning
Solution Approach 1:
The patent applies pigmented particles only to the specific local area of the cosmetic product surface that requires decoration, while keeping the pan surface free of particles. The suction method ensures that particles are removed from the pan, maintaining its non-adhesive properties and preventing the need for cleaning.
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
This process reduces material consumption by 20-30% and allows for the reuse of recovered pigmented particulate material, minimizing waste and eliminating the need for cleaning non-functional surfaces, while achieving a velvety or three-dimensional visual effect.
Implementation Method 1
suctioning the pigmented particulate material deposited on surfaces different from said exposed surface portion
Data Source
AI summary
The present invention relates to a process for coating a surface of a compact solid cosmetic product obtained by casting with pigmented particulate material.