Removable Lid Nail Polish Container Design
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Solution Overview
Problem
Nail polish containers with integrally formed applicator brushes struggle to access all content due to their narrow bottleneck design, leading to waste as the content level depletes, as the brush can only reach the center beneath the bottleneck, making it difficult to utilize the remaining product.
Innovation Solution
A container with a removable lid and a wide mouth design allows the applicator brush to access the remaining liquid content by detaching from the lid, enabling access to the entire volume of the liquid, including the area beneath the bottleneck, and includes features like a ledge to hold the brush and a slot for wiping excess material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a narrow bottleneck design is used in the container, then the applicator brush can be integrally formed and sealed properly, but the brush cannot access all content in the bottle, leading to product waste
Solution Approach 1:
The container is divided into separate components: a wide-mouth jar and a removable lid with an integrally formed applicator brush. This segmentation allows the brush to access all content through the wide mouth while maintaining the manufacturing benefits of an integrally formed applicator, resolving the contradiction between ease of manufacture and product waste.
2Loss of substance
If a wide mouth design is used in the container, then the applicator brush can access all content, but sealing and refilling become more difficult
Solution Approach 1:
A removable lid acts as an intermediary between the wide-mouth jar and the applicator brush. The lid provides a through-hole for brush access while maintaining sealing capability when closed, and enables easy refilling by removing the lid. This intermediary component resolves the contradiction between product accessibility and ease of sealing/refilling operations.
Data Source
AI summary
A container comprising a jar defining a volume for containing a liquid, the jar having a rim defining an opening having a first diameter, a removable lid defining a through hole of a second diameter and having a coupling element, the removable lid sealing the opening of the jar; a tool configured to extend through the removable lid and having a working portion disposed in the volume when the tool is attached the jar opening, wherein each of the working portion has a diameter less than the second diameter, which is smaller than the first, such that for an amount of liquid material above a threshold, the tool can access the liquid material through the throughhole, and for an amount of liquid material at or below the threshold, the lid is removable and the tool is used to access the liquid material.