Refillable Content Container Structure for Recycling and Clean Dispensing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional cosmetic containers face challenges in recycling due to different materials used for parts, making separation and disposal difficult, and pipets can contaminate the content, limiting replaceability.

Innovation Solution

A container design where the inner and outer containers are made of the same material, allowing easy recycling, and the inner container is detachably coupled to the outer container for easy replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If different materials are used for various parts of the container, then functional performance is improved, but recycling difficulty increases

Engineering Contradiction:

Improvefunctional performanceVSAvoidrecycling difficulty

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent applies homogeneity by making the inner container, outer container, and discharge part all from the same material (polypropylene). This allows all components to be recycled together as a single material type, eliminating the need to separate different materials while maintaining the functional performance of each component.

Inventive Principle:

Principle #33Homogeneity

2Ease of operation

If the pipet enters the content, then content discharge function is achieved, but contamination risk increases

Engineering Contradiction:

Improvecontent discharge functionVSAvoidcontamination risk

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the discharge function from the inner container by providing a separate discharge part that does not enter the content. The discharge part is connected to the outer container and provides a discharge hole, allowing content to be discharged without the pipet contacting the content, thereby preventing contamination.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If the inner container is detachably coupled, then replaceability is improved, but coupling reliability may decrease

Engineering Contradiction:

ImprovereplaceabilityVSAvoidcoupling reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the container into an inner container and an outer container that can be separately assembled and disassembled. The inner container can be detached from the outer container and replaced with a new one when needed, while the outer container with the discharge part remains. This segmentation enables replaceability while maintaining reliable coupling through the fastening cap structure.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP4691939A1Content container

Publication Date: 2026.02.11 YONWOO CO LTD

Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3

AI summary

A content container according to an embodiment of the present invention comprises: an outer container; a discharge part which is disposed at one end of the outer container and through which a content is discharged to the outside; an inner fastening cap which is fixed to the inside of the outer container; and an inner container in which the content is stored, wherein the inner container is inserted into and fixed to the outer container through the inner fastening cap, and is spatially connected to the discharge part; and the inner container can be separated from the inner fastening cap and replaceable with new one. Various other embodiments understood through the specification may also be possible.