Double Pressurized Container With Nested Sealing for Controlled Discharge

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Solution Overview

Problem

Existing pressurized containers face issues with accidental discharge, leakage during transportation, and difficulty in handling due to the design of the dip tube and valve configuration, leading to safety concerns and inefficiencies in manufacturing and use.

Innovation Solution

A double pressurized container design with an inner and outer container, a flexible plug sealing both, and an openable seal part that requires a dedicated discharge member for opening, ensuring high safety and ease of use, while the outer container's elasticity protects against impacts and the inner container prevents leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a dip tube and valve configuration is used in pressurized containers, then the valve can be used repeatedly and manufacturing cost is reduced, but the tip end is easily shifted from the sealed part position by dip tube curvature and the dip tube bends easily causing difficulty in opening operations

Engineering Contradiction:

Improvemanufacturing costVSAvoidopening operation

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The container is divided into an inner container for concentrate and an outer container for pressurizing agent, with separate sealing mechanisms. The plug separates the dip tube from the valve assembly, allowing independent optimization of each component's function and reducing interference between them.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A plug is introduced as an intermediary component between the inner container and outer container. This plug with its seal opening part facilitates controlled access to the concentrate while maintaining the structural integrity and preventing the dip tube from interfering with the valve operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If the container is made of synthetic resin to reduce weight and cost, then manufacturing cost is reduced, but it may be destroyed or cause leakage when dropped during distribution

Engineering Contradiction:

Improvemanufacturing costVSAvoidsafety during distribution

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The inner container is nested within the outer container, creating a protective structure. The outer container acts as a protective shell for the inner container, absorbing impact forces during drops while the inner container maintains its contents seal integrity through the plug mechanism.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The dual-container nested structure provides beforehand cushioning protection. The outer container is designed to absorb and dissipate impact forces before they can reach the inner container, preventing damage to the concentrate seal during distribution and handling.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If the valve is projected from the container to enable repeated use, then the valve can be used repeatedly, but it must be protected very carefully to prevent accidental operation during distribution

Engineering Contradiction:

Improverepeated use capabilityVSAvoidaccidental discharge

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The valve assembly is extracted from the main container body and integrated into the plug structure. This separation allows the valve to be protected by the plug's sealing mechanism while maintaining accessibility for repeated use through the seal opening part.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The seal opening part is designed as a single-use or limited-use component that is opened under controlled conditions and then sealed again. This allows the valve to be protected during distribution while enabling repeated use through controlled opening mechanisms.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Ease of operation

If the inner container is made flexible to enable contraction during discharge, then the inner container can contract to discharge concentrate, but it may leak during handling and distribution

Engineering Contradiction:

Improvedischarge mechanismVSAvoidsealing integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The inner container is designed with flexible walls that can dynamically contract and expand. During normal storage, the flexible wall maintains sealing integrity. During discharge, the flexible wall contracts to push concentrate through the valve, providing dynamic adaptation to operational requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The flexible wall replaces rigid sealing mechanisms. Instead of using complex mechanical seals, the flexibility of the inner container wall itself provides the sealing function, simplifying the design while maintaining reliability during both storage and discharge operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 enhances safety during distribution, prevents accidental discharge, and ensures easy handling and environmental friendliness by using a dedicated discharge member, reducing the risk of leakage and improving manufacturing efficiency.

Implementation Method 1

the inner container (14) which is stored inside the outer container (13) and has flexibility, and a plug (15) fixed to at least one of the outer container (13) and the inner container (14) and sealing both of the outer container (13) and the inner container (14)... The inside of the inner container (14) is a concentrate chamber Sc to be filled with the concentrate C

Methodology Applied

Scientific EffectDissolution: Solvation

Implementation Method 2

a manufacturing method combining an under-cup charging and an ultrasonic wave welding in which a pressurized gas is charged in a space between the outer container and the inner container through a gap between the mounting sleeve and the outer container, and after that, the periphery of the mounting sleeve is welded to the outer container by the ultrasonic-wave welding

Methodology Applied

Scientific EffectWelding: Welding

Implementation Method 3

a space between the outer container (13) and the inner container (14) is a pressurizing agent chamber Sp to be filled with the pressurizing agent P

Methodology Applied

Scientific EffectPressure increase: Pressure Increase

Data Source

PatentEP3825254B1Double pressurized container, discharge product, discharge member, dispenser system and manufacturing method for discharge product

Publication Date: 2025.08.27 DAIZO

Figure 1(A)~1(B)
Figure 2(A)~2(C)
Figure 3(A)~3(B)

AI summary

A double pressurized container 11, 31 includes an outer container 13, 33; an inner container 14, 34 stored inside the outer container 13, 33 and having flexibility; and a plug 15, 35 welded to the outer container 13, 33 and the inner container 14, 34 and sealing both of the outer container 13, 33 and the inner container 14, 34. An inside of the inner container 14, 34 is a concentrate chamber for charging a concentrate C, and a space between the outer container 13, 33 and the inner container 14, 34 is a pressurizing agent chamber for charging a pressurizing agent P, and the plug 15, 35 is provided with an openable seal part 15d, 44 to open the concentrate chamber. A discharge product 11a, 31a has the double pressurized container 11 filled with the concentrate C and the pressurizing agent P.