Structured Stem Capillary Absorption for Cosmetic Applicators

The stem is designed with a porous absorbing structure that capillary-absorbs solution from the reservoir and delivers it metered to the brush. The porous material enables controlled solution transport through capillary action, providing consistent solution delivery without requiring complex mechanical control mechanisms.

The absorbing stem acts as an intermediary between the solution reservoir and the brush. It receives solution from the reservoir, processes it through capillary absorption and wick transport, and delivers it controlled to the brush, mediating the solution flow to achieve consistent application.

The absorbing stem is pre-loaded with solution capacity and configured to automatically wick solution from the reservoir to the brush as needed. This preliminary preparation of the solution delivery system eliminates the need for repeated user actions of dipping the applicator during use.

The capillary-absorbing stem maintains continuous solution availability at the brush through automatic wicking from the reservoir. This continuous solution supply ensures uninterrupted cosmetic application without requiring periodic stopping to replenish solution, maintaining productive continuous use.

The porous absorbing structure in the stem provides controlled capillary transport of solution at a regulated rate. The pore size and material properties of the porous structure naturally limit the solution flow speed, delivering solution progressively to the brush rather than all at once, ensuring uniform application.

The solution delivery rate is controlled by changing the physical parameters of the absorbing stem, specifically the pore size, porosity, and material properties. These parameter changes regulate the capillary action to achieve optimal solution delivery speed that balances application efficiency with uniformity.