Cosmetic Compact Refill Container Triple Sealing Design
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Solution Overview
Problem
Conventional cosmetic compact refill containers face issues with liquid cosmetic leakage due to low sealing properties, especially when containing low viscosity cosmetics, and have complex manufacturing processes.
Innovation Solution
A refill container design featuring a main body with inner and outer walls, a mesh fabric cover, a sponge, an auxiliary mesh fabric cover, and an elastic valve plate, providing triple sealing to prevent leakage and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a porous pad is used to contain liquid cosmetic, then the liquid cosmetic can be impregnated and stored, but the sealing property deteriorates causing leakage
Solution Approach 1:
The patent uses a flexible waterproof film (aluminum foil or plastic film) to create a sealed container for the liquid cosmetic. This film acts as a flexible barrier that prevents leakage while allowing the container to be compressed during use. The film is combined with a sponge structure that provides both storage capacity and controlled discharge through cut lines.
Solution Approach 2:
The patent combines multiple materials with different properties: a sponge material for absorption and structure, a waterproof film (aluminum foil or plastic) for sealing, and adhesive materials to bond them together. This composite structure achieves both liquid storage capability and improved sealing properties by leveraging the strengths of each material.
2Reliability
If multiple sealing structures are added to prevent leakage, then the sealing property is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated structure. The waterproof film serves as both the sealing barrier and the container wall, while the sponge provides both structural support and cosmetic storage. The cut lines in the sponge serve as both structural elements and controlled discharge paths, eliminating the need for separate sealing mechanisms.
Solution Approach 2:
The patent applies sealing measures locally where needed rather than throughout the entire structure. The waterproof film is positioned specifically at the bottom and sides where leakage would occur, while the top remains open for access. The cut lines are strategically placed in the sponge to control discharge only at necessary points.
3Ease of operation
If a discharge plate with multiple outlets is used to control low viscosity liquid cosmetic, then the liquid flow is controlled, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent uses a simple, inexpensive sponge structure with cut lines instead of a complex discharge plate with multiple precision outlets. The sponge is a disposable component that can be easily manufactured through cutting and folding operations, making the overall device simpler and more cost-effective to produce while still controlling liquid discharge.
Solution Approach 2:
The patent controls liquid discharge by changing the physical parameters of the sponge structure - specifically the size, number, and arrangement of cut lines. By varying these parameters, the discharge rate of low viscosity cosmetics can be controlled without requiring complex mechanical valve systems or multiple outlet structures.
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 design effectively prevents liquid cosmetic leakage by enhancing sealing properties and simplifies production, making it suitable for low viscosity cosmetics while reducing production costs.
Implementation Method 1
an elastic pad made of rubber or synthetic resin having a predetermined thickness, the valve plate being laminated and pressed by the sponge and the first rim part provided at an upper surface of the valve plate along the edge thereof
Implementation Method 2
a mesh fabric covering an upper part of the housing space by extending to an inner side of the first rim part; an auxiliary mesh fabric provided by extending to an inside of the auxiliary rim part, the auxiliary mesh fabric covering the housing space at a lower part of the sponge
Data Source
AI summary
A refill container removably stored in a cosmetic compact includes: a main body being open at an upper part thereof and having a housing space inside thereof, an upper end sealing protrusion part, a lateral sealing protrusion part provided at an outer surface of the inner wall, and an outer wall being provided outside the inner wall with a predetermined gap therebetween; and a mesh fabric cover having a cylindrical first vertical extension part combined with the inner wall and the outer wall by being inserted into a gap provided therebetween such that an inner surface of the first vertical extension part is in close contact with the lateral sealing protrusion part, and a first rim part provided at an upper end of first vertical extension part.