Refillable Airless Cosmetic Container With Reusable Pump Assembly

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Solution Overview

Problem

Existing cosmetic containers with airless pumps are complicated in configuration, leading to increased production costs and environmental waste due to the separation of inner and outer containers, and difficulty in replacing the inner container without damaging the pump assembly.

Innovation Solution

A container design with a detachable inner container that couples to an outer container via a screw mechanism, allowing easy refilling and reusing the pump assembly, while preventing parts from sticking together and minimizing contamination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an inner container is separated from an outer container in a state where the airless pump is applied to the cosmetic container, then the container can be refilled with new content, but the number of parts of the container increases to cause the container to be complicated in configuration

Engineering Contradiction:
ImproverefillabilityVSAvoidcontainer configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The inner container is nested within the outer container, with the inner container having a smaller diameter than the outer container. This nesting arrangement allows the inner container to be easily inserted and removed through the opening of the outer container while maintaining a compact overall structure, thus enabling refilling without significantly increasing container complexity

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The container is divided into two separable parts: an outer container with the pump assembly and an inner container holding the cosmetic content. This segmentation allows the inner container to be replaced independently while keeping the outer container and pump assembly intact, enabling refilling without increasing overall device complexity

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If an inner container is separated from an outer container in a state where the airless pump is applied to the cosmetic container, then the container can be refilled with new content, but the parts constituting the inner container may be separated from the parts constituting the outer container in a state of being stick thereto

Engineering Contradiction:
ImproverefillabilityVSAvoidcontainer replacement difficulty
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The pump assembly is extracted and fixed to the outer container separately, while the inner container is designed to be independently removable. This extraction ensures that when the inner container is separated, the pump assembly remains attached to the outer container and does not stick to the inner container parts, facilitating easy replacement of the inner container

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The inner container is nested within the outer container with a diameter smaller than the outer container. This nesting design allows the inner container to be easily inserted and removed through the outer container's opening without the pump assembly interfering with the separation process, preventing sticking issues during replacement

Inventive Principle:
Principle #7Nested doll (Nesting)

3Loss of substance

If a new jar type cosmetic container with an airless pump is used, then the content stored therein can be completely used up, but the cost of the cosmetic container is included in the purchase price of the cosmetic product, thereby causing an economical load to a consumer

Engineering Contradiction:
Improvecontent utilizationVSAvoidproduction cost
Core Design Contradiction:
Loss of substanceVSEase of manufacture

Solution Approach 1:

The outer container with the pump assembly is designed to be reusable and recovered after the inner container is emptied. The inner container can be replaced while keeping the outer container and pump assembly intact, allowing consumers to reuse the expensive pump assembly portion and only replace the cheaper inner container, thus reducing overall production costs while maintaining complete content utilization

Inventive Principle:
Principle #34Discarding and recovering

Solution Approach 2:

The container is segmented into a reusable outer container with pump assembly and a replaceable inner container. This segmentation allows the expensive pump assembly to be manufactured once and reused multiple times, while only the inner container needs to be replaced when emptied, reducing the overall production cost and economic burden on consumers

Inventive Principle:
Principle #1Segmentation

4Loss of substance

If a new jar type cosmetic container with an airless pump is used, then the content stored therein can be completely used up, but the entire container of the cosmetic product is re-produced according to the use of the cosmetic product, thereby causing environmental contamination due to resource waste

Engineering Contradiction:
Improvecontent utilizationVSAvoidenvironmental contamination
Core Design Contradiction:
Loss of substanceVSObject-generated harmful factors

Solution Approach 1:

The outer container with pump assembly is recovered and reused after the inner container is emptied, preventing the need to reproduce the entire container. Only the inner container is discarded and replaced, significantly reducing waste and environmental contamination while maintaining complete content utilization

Inventive Principle:
Principle #34Discarding and recovering

Solution Approach 2:

The container is segmented into a reusable outer container with pump assembly and a disposable inner container. This segmentation enables selective replacement of only the inner container when emptied, allowing the outer container to be reused multiple times and thereby reducing resource waste and environmental contamination

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4706449A1Easily refillable content container
Publication Date: 2026.03.11 YONWOO CO LTD
  • EP4706449A1 patent drawingFigure 1
  • EP4706449A1 patent drawingFigure 2
  • EP4706449A1 patent drawingFigure 3

AI summary

A content container according to an embodiment may comprise: an outer container which includes a pump assembly and within which an accommodation space is provided; and an inner container which holds a content, is accommodated in the accommodation space of the outer container, and is detachably coupled to the outer container, wherein the outer container is open on the bottom thereof, and the inner container is inserted into and separated from the accommodation space through the open bottom surface of the outer container. Various other embodiments understood through the specification may also be possible.