Replaceable Cosmetic Jar With Reusable Outer Bottle
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Solution Overview
Problem
The disposal of cosmetic jars after use results in significant waste due to their long service life compared to the cosmetic content, primarily because they are made of non-degradable high-molecular polymers, leading to environmental pollution.
Innovation Solution
A replaceable cosmetic jar design featuring a degradable inner bottle housed in a reusable outer bottle, secured by anti-slip ribs and a cap sealing assembly, allowing for both cream and powder cosmetics to be contained, with a sealing mechanism to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cosmetic jar is made of non-degradable high-molecular polymer material, then the jar has sufficient strength and durability, but the jar cannot be degraded and causes serious environmental pollution
Solution Approach 1:
The cosmetic packaging system is divided into two separate parts: a reusable outer jar made of durable non-degradable material and a disposable inner bottle made of degradable material. This segmentation allows the strong outer jar to be retained and reused while the inner bottle that contacts the cosmetic can be discarded after use, reducing environmental pollution.
Solution Approach 2:
The inner bottle is nested inside the outer jar, with the inner bottle having a smaller size and being accommodated within the outer jar's cavity. The inner bottle includes a body portion and a sealing portion that fits into the outer jar, creating a nested structure that enables both reusability and disposability.
2Device complexity
If the whole jar is discarded after the cosmetic is used up, then the jar structure is simple, but the packaging material is extremely wasted since the jar service life is much longer than the cosmetic service time
Solution Approach 1:
The packaging system is segmented into a reusable outer jar and a disposable inner bottle. The outer jar maintains its structural integrity and can be reused for multiple cosmetic refills, while only the inner bottle containing the cosmetic is discarded, significantly reducing packaging material waste.
Solution Approach 2:
The design enables selective discarding of only the inner bottle after cosmetic consumption, while the outer jar is recovered and reused for subsequent cosmetic refills. This selective discarding approach minimizes material waste while maintaining functional simplicity.
3Object-generated harmful factors
If the inner bottle is made of degradable material, then environmental pollution is reduced, but the inner bottle may have reduced strength compared to traditional polymer jars
Solution Approach 1:
The degradable inner bottle is nested within the protective outer jar, which provides the primary structural strength and protection. The inner bottle only needs to contain the cosmetic and maintain seal integrity, not provide overall structural support, allowing degradable materials to be used without compromising overall system strength.
Solution Approach 2:
The outer jar serves as a protective shell that cushions and protects the inner degradable bottle from external forces and damage during handling, transport, and storage, compensating for the potentially reduced strength of the degradable material.
4Reliability
If the cap sealing assembly presses the edge-pressing ring to seal the opening, then the sealing effect is improved, but the structure complexity increases
Solution Approach 1:
The sealing function is merged with the cap assembly by integrating the sealing component into the cap structure. The cap, when screwed onto the outer jar, automatically engages the sealing mechanism that presses against the edge-pressing ring, combining closure and sealing functions in a single operation.
Solution Approach 2:
The cap assembly serves multiple functions: it closes the outer jar, provides the sealing mechanism through the sealing component, and maintains the seal during storage and transport. This multi-functionality reduces the need for separate sealing devices and simplifies the overall structure.
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 reduces waste by enabling the inner bottle to be discarded while the outer bottle is reused, accommodating various cosmetic types with enhanced stability and convenience.
Implementation Method 1
anti-slip ribs are provided on the limit groove
Implementation Method 2
the sealing film hermetically covers the upper edge of the edge-pressing ring
Implementation Method 3
the dustproof cap presses an upper edge of the edge-pressing ring through the cap sealing assembly to seal an opening of the replaceable inner bottle
Implementation Method 4
The dustproof cap is threaded with the outer bottle
Data Source
AI summary
A replaceable cosmetic jar includes a dustproof cap, a cap sealing assembly, a replaceable inner bottle, and an outer bottle, where the replaceable inner bottle is placed in the outer bottle; the replaceable inner bottle includes a bottle body and a bearing ring; the bearing ring is provided at a top of the bottle body; a top opening of the bottle body extends outward to form an edge-pressing ring; an annular limit groove matching the bearing ring is formed in a top of the outer bottle; anti-slip ribs are provided on the limit groove; a lower edge of the edge-pressing ring is placed at a top opening of the outer bottle; and when the dustproof cap covers the top opening of the outer bottle, the dustproof cap presses an upper edge of the edge-pressing ring through the cap sealing assembly to seal an opening of the replaceable inner bottle.