Rotating Nested Mixing Container for Sealed Cosmetic Blending

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Solution Overview

Problem

Conventional mixing type containers for cosmetics are complex, bulky, and inefficient, often leading to poor sealing and potential content deterioration, while requiring cumbersome mixing processes and complicating precise content molding.

Innovation Solution

A mixing type container design featuring a first container with a rotatably coupled second container, allowing simple rotation to mix contents efficiently, ensuring separate sealing and space optimization, and enabling visual inspection of the mixing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If two contents are stored in separate containers and mixed by user, then content stability is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvecontent stabilityVSAvoidease of mixing
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The second container is nested within the first container, with the second container rotatably coupled to the first container. When the second container rotates, it communicates with the first container to allow contents to mix automatically, eliminating the need for manual mixing operations while maintaining content stability during storage

Inventive Principle:
Principle #7Nested doll (Nesting)

2Stability of the object's composition

If conventional mixing type containers are designed to store two contents separately, then content stability is improved, but device complexity increases

Engineering Contradiction:
Improvecontent separationVSAvoidcontainer structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent uses a nested structure where the second container is placed inside the first container and rotatably coupled to it. This nested design maintains effective content separation while using a simple, compact structure that avoids the complexity of conventional mixing type containers with multiple separate components

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The container is segmented into two functional parts: the first container for storing the first content and the second container for storing the second content. The segmentation allows independent sealing and storage of each content while maintaining an overall simple structure through the nested arrangement

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If second container is rotatably coupled to first container, then ease of operation is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvemixing operation simplicityVSAvoidmolding precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The rotatable second container is nested within the first container, allowing simple rotational mixing operation. The nested structure provides natural alignment and guidance for the rotating motion, reducing the need for complex precision molding mechanisms while maintaining ease of operation

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP4691312A1Mixing-type content container
Publication Date: 2026.02.11 YONWOO CO LTD
  • EP4691312A1 patent drawingFigure 1
  • EP4691312A1 patent drawingFigure 2
  • EP4691312A1 patent drawingFigure 3

AI summary

A mixing-type content container according to an embodiment of the present invention includes: a first container in which first contents are stored; and a second container in which second contents are stored. The second container is coupled to one end of the first container. The rotation of one region of the second container may cause another region of the second container to become inserted into the first container and communicates with the first container. Various other embodiments that can be understood through the specification are also possible.