Deostick Refill Structure With Removable Piston for Easy Refilling

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Solution Overview

Problem

Existing deodorant sticks face challenges in efficient refilling and sustainability, with a need for recyclable materials and easy refilling mechanisms.

Innovation Solution

A refillable deodorant container system comprising a hollow body, cap, and piston, where the cap and piston are fitted to the body, allowing for easy removal and refilling, and made from recyclable materials like biosourced polymers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If deodorant sticks are packaged in hollow tubes with piston or elevator platform, then the product can be dispensed effectively, but the refilling process becomes complex and difficult

Engineering Contradiction:

Improverefilling processVSAvoidcontainer structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The deodorant container is divided into separate components: a reusable hollow tube and a removable refill unit. The refill unit contains the piston and deodorant material, allowing it to be easily separated and replaced without disassembling the entire container structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The piston and deodorant material are extracted as a separate removable refill unit from the hollow tube. This extraction allows the refill to be easily removed and replaced, simplifying the refilling process while maintaining the functional integrity of the container.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If traditional deodorant containers are made from non-recyclable materials, then manufacturing is straightforward, but sustainability and environmental impact deteriorate

Engineering Contradiction:

ImprovesustainabilityVSAvoidmaterial selection

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The hollow tube is designed to be discarded after use, while the refill unit containing the piston and deodorant material is recovered and reused. This selective recovery approach improves sustainability by reducing the need to manufacture new containers while maintaining ease of manufacture through standardized refill production.

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The container system uses composite material strategies combining recyclable hollow tube materials with reusable piston components. The refill unit can be made from biosourced polymers or other recyclable materials, creating a composite system that prioritizes sustainability without significantly complicating the manufacturing process.

Inventive Principle:

Principle #40Composite materials

3Reliability

If the refill is made from recyclable or biosourced materials, then environmental sustainability improves, but manufacturing complexity and cost increase

Engineering Contradiction:

ImproverecyclabilityVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The refill unit is designed as a disposable or limited-life component that is replaced rather than permanently reused. This approach simplifies manufacturing by allowing the use of cost-effective recyclable or biosourced materials in the refill unit, while the durable hollow tube is made from traditional materials, balancing sustainability with manufacturing simplicity.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentEP4108131B1Deostick refill

Publication Date: 2025.09.17 BERRY BEAUTÉ MAROLLES SAS

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AI summary

A refill for a stick deodorant container is provided and comprises a hollow body, a cap which can be fitted to the hollow body at one end thereof and a piston which can be fitted to the hollow body at the other end thereof. The hollow body releasably houses deodorant material.