Powder Sunscreen Brush Flow Restrictor for Even Dispensing
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Solution Overview
Problem
Existing dispensing brushes for cosmetic and UV blocking powders face challenges with consistent and even application, often experiencing clogging and inconsistent dispensing due to the agglomeration and enhanced adhesion properties of the powders.
Innovation Solution
A powder dispensing brush with a powder chamber, filter, and flow restrictor plate is designed to ensure consistent flow, featuring a priming chamber and a flow restrictor plate with optimized orifices to control powder distribution, reducing clogging and ensuring even application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If powder sunscreens with enhanced skin adherence are used, then UV protection effectiveness is improved, but dispensing consistency deteriorates due to agglomeration and clogging
Solution Approach 1:
The brush is divided into multiple functional chambers: a powder supply chamber for storage, a priming chamber for controlled dispensing, and a brush head for application. This segmentation allows powder to be transferred in a controlled manner from storage to priming, preventing agglomeration and ensuring consistent dispensing while maintaining the effectiveness of adherent powder sunscreens
Solution Approach 2:
The priming chamber acts as an intermediary between the powder supply chamber and the brush head. It receives powder from the supply chamber and delivers it to the brush in a controlled, consistent manner, preventing clogging and agglomeration while maintaining the protective properties of the sunscreen powder
2Ease of manufacture
If a simple brush design is used, then ease of manufacture is improved, but application consistency deteriorates due to powder clogging and agglomeration
Solution Approach 1:
The brush is segmented into distinct functional chambers (powder supply chamber, priming chamber, and brush head) that can be manufactured separately and assembled. This modular approach maintains manufacturing simplicity while enabling consistent powder flow and application by preventing agglomeration through controlled transfer between chambers
3Productivity
If powder flow rate is increased, then productivity is improved, but application evenness deteriorates due to streaking and inconsistent distribution
Solution Approach 1:
The priming chamber enables periodic action by accumulating powder and releasing it in controlled amounts to the brush. This periodic transfer mechanism ensures consistent powder distribution and even application while maintaining adequate productivity through efficient powder utilization
Data Source
AI summary
Powder dispensing brushes configured to apply a powder to a skin surface of a user are provided. The dispensing brush system can provide an efficient and effective easy to dispense sunscreen to the face and body. The system can include a housing, a powder supply chamber having an interior space configured to hold a predetermined volume of the powder, a passageway in communication with the interior space of the powder supply chamber, a filter, a second chamber distal to the filter configured to collect a volume of powder after the powder has passed through the filter, a flow restrictor plate including orifices arranged in an annular pattern, the flow restrictor plate configured to receive powder from the volume of powder upon actuation by a user, and an outer brush including a plurality of bristles.