Heated Mold Groove Formation in Cosmetic Paste
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Solution Overview
Problem
Existing methods for producing cosmetic make-up products with high-definition patterns and deep decorations are laborious and difficult to scale up, resulting in uneven distribution of decorative powder and unsatisfactory reproducibility and productivity.
Innovation Solution
A method involving a heated mold with reliefs to create deep grooves in a base cosmetic paste, followed by filling with a second decorative paste and drying, ensuring precise definition and depth, with a canvas to absorb solvent and prevent residue, and a smooth second mold for shaping, allowing for industrial-scale production and well-defined designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a mold with reliefs is used to create grooves in base cosmetic paste, then deep decorations with clear contours are achieved, but the decorative powder distribution becomes uneven and productivity decreases
Solution Approach 1:
The mold temperature is changed from ambient to heated (above 60°C), which fundamentally alters the interaction between the mold and cosmetic paste. This parameter change enables the mold to penetrate the paste more effectively, creating well-defined grooves while allowing for easier removal and better powder distribution, thus resolving the contradiction between precision and productivity
Solution Approach 2:
The mold is pre-heated before contact with the cosmetic paste. This preliminary action of heating the mold ensures that when it contacts the paste, the thermal energy facilitates immediate penetration and groove formation, improving both the definition and the efficiency of the process
2Ease of manufacture
If manual cleaning by rubbing on abrasive sponges is used, then the process is simple, but the decorative powder distribution remains uneven
Solution Approach 1:
Changing the temperature parameter of the mold from ambient to heated (above 60°C) fundamentally improves the powder distribution uniformity while maintaining the simplicity of the manual cleaning process. The heated mold creates grooves that allow for better powder penetration and distribution, resolving the contradiction between ease of manufacture and manufacturing precision
3Manufacturing precision
If decorative powder is pressed into grooves created by mold reliefs, then deep decorations are achieved, but the amount of powder remaining in grooves is insufficient
Solution Approach 1:
Heating the mold above 60°C changes the physical state interaction between the mold and cosmetic paste, enabling deeper groove penetration while creating channels that better retain the decorative powder. This parameter change simultaneously improves decoration depth and powder retention quantity
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 method achieves high-definition, deep decorations with uniform distribution of decorative paste, enabling reproducible and productive cosmetic make-up products suitable for industrial application with excellent definition and depth retention.
Implementation Method 1
it has been verified that the use of a hot mold allows obtaining perfectly defined grooves in the base cosmetic paste 2 and that are able to have a much greater depth and definition compared to that obtained in a non-heated mold. It is believed that this is due to the fact that hot mold makes the solvent present in the interface surface between the mold evaporate.
Implementation Method 2
The interposed canvas has a double function of at least partially absorbing the solvent that is squeezed from the paste during pressing
Data Source
Figure 1~8
Figure 9~11
AI summary
A method of making a cosmetic make-up product comprising the steps of: a. dispensing a base cosmetic paste (2)on a support b. pressing the base paste through a first heated mold (4) at a temperature higher than 60 °C and provided with at least one relief (4A) adapted to create a groove (5) in the base paste (2); c. dispensing a second decorative cosmetic paste (6) on top of the base cosmetic paste (2) so as to completely cover it and so as to fill at least partially the groove (5) created in the base cosmetic paste (2) by the first mold (4), d. pressing with a second mold (7) the base cosmetic paste (2) and the decorative cosmetic paste (6) so as to make the pastes take a shape of the second mold (6), thus obtaining a semi-finished product e. drying the semi-finished product f. surface working the dried semi-finished product up to removing the second decorative cosmetic paste (6) at least from those areas of the base cosmetic paste without grooves (5).