Cosmetic Applicator Comb Teeth Control Liquid Pooling
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Solution Overview
Problem
Conventional tools for applying mascara and eyebrow cosmetics suffer from excessive liquid cosmetic retention and solidification issues due to wide spaces between bristle groups, leading to unwanted application amounts and discomfort.
Innovation Solution
The tool features a brush portion with bristles implanted in two lines and comb teeth formed between bristle groups, narrowing the liquid pool space and preventing excessive liquid pooling, allowing for controlled application and preventing solidification by utilizing the gap between comb teeth for efficient cosmetic distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the space between two lines of bristle groups is made wide, then liquid cosmetic can be retained in the space, but an excessively large amount of liquid cosmetic is retained and applied more than intended
Solution Approach 1:
The brush portion is segmented into multiple bristle groups arranged in two lines, with comb teeth further dividing the space. This segmentation creates multiple smaller liquid pool spaces between adjacent bristle groups and between bristles and comb teeth, distributing the cosmetic retention across numerous small spaces rather than one large space, thereby controlling the total application amount
Solution Approach 2:
Different regions of the brush portion have different local qualities: bristle groups provide cosmetic retention, while comb teeth create narrow gaps for controlled distribution. The comb teeth structure locally modifies the space characteristics to prevent excessive pooling while maintaining adequate cosmetic capacity
2Quantity of substance
If liquid cosmetic adheres to the fastener exposed at the bottom portion, then cosmetic is retained, but the cosmetic is not easily removed by the wiping portion and remains in large amount causing solidification
Solution Approach 1:
The comb teeth structure extracts the cosmetic retention function from the fastener surface. By providing dedicated liquid pool spaces between bristle groups and comb teeth, the cosmetic is held in these separated spaces rather than adhering to the fastener, making it accessible to the wiping portion and preventing solidification on the fastener surface
Data Source
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AI summary
Provided is a tool for applying cosmetics for mascara and eyebrow cosmetics which allows applying a liquid cosmetic in an appropriate amount to eyelashes or eyebrows, and with which a previously unexperienced feeling of use can be obtained. In an application tool (1) for which a plurality of bristles (30) are fixed in a double-folded manner to the inside of a long groove (12), which is formed at a partial side surface of a brush portion (10) formed at a leading end side of a brush shaft (6), comb teeth (26) are integrally formed at a predetermined pitch in a brush portion axial direction on an exposed surface (21) of the fastener (20). As a result of forming the comb teeth (26) in a space that is wide between two lines of bristle groups (30a, 30b), the liquid pool space is narrowed accordingly, so that excessive pooling of a liquid cosmetic (2) in the brush portion (10) can be prevented. Also, as a result of the comb portion being formed between the bristle group 30a and the bristle group 30b, an application tool (1) with which a previously unexperienced feeling of use can be obtained can be provided.