Spout-equipped Container Hydrogen Barrier Sealing
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Solution Overview
Problem
Conventional spout-equipped containers made of polyethylene resin are prone to hydrogen leakage when containing hydrogen water, leading to poor hermetical sealing performance.
Innovation Solution
A spout-equipped container with a heat-sealed sheet covering the inner opening of the spout base, where the aluminum regions of the heat-sealed sheet and the container are in close contact, preventing hydrogen from escaping. The container includes a spout base with a cylindrical shape, an opening element, and an activating body that moves the opening element to tear the heat-sealed sheet, allowing for secure sealing and easy access to the contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spout made of polyethylene resin is used, then the container is easy to manufacture and has good flexibility, but hydrogen leaks from the container compromising hermetical sealing performance
Solution Approach 1:
The spout is constructed as a composite structure combining polyethylene resin (for flexibility and ease of manufacture) with an aluminum layer (for hydrogen barrier properties). This multi-layer composite material approach allows the spout to simultaneously achieve good manufacturability and effective hydrogen sealing, resolving the contradiction between ease of manufacture and hermetical sealing performance.
Solution Approach 2:
The aluminum layer is selectively applied to the inner surface of the spout base where hydrogen contact occurs, while the outer surface and other non-critical areas use polyethylene resin. This localized application of aluminum provides hydrogen barrier properties exactly where needed for sealing, while maintaining overall ease of manufacture through partial metal coating rather than full metal construction.
2Reliability
If the heat sealed sheet is completely sealed, then hydrogen leakage is prevented, but the container cannot be opened for access to contents
Solution Approach 1:
The heat sealed sheet transitions from a static completely sealed state to a dynamic state where a controlled opening is created by the piercing element. The sheet remains sealed during storage and transport, then allows controlled access when needed through the piercing action, providing both hermetical sealing performance and ease of operation for content access.
Solution Approach 2:
The heat sealed sheet is functionally segmented into a sealing portion (maintaining hermetic seal) and an opening portion (created by the piercing element for access). This segmentation allows the majority of the sheet to maintain sealing integrity while a controlled portion provides access functionality, resolving the contradiction between complete sealing and ease of operation.
3Ease of operation
If the spout base is made with a large opening for easy filling, then contents can be easily added, but hydrogen leaks more readily from the container
Solution Approach 1:
The aluminum layer is applied specifically to the inner surface of the spout base where hydrogen contact occurs, providing localized hydrogen barrier properties. This allows the spout base to maintain ease of filling operation while the aluminum-coated inner surface prevents hydrogen leakage, resolving the contradiction between filling convenience and hermetical sealing.
Solution Approach 2:
The aluminum layer acts as an intermediary barrier between the hydrogen water and the external environment. It mediates the interaction by allowing the spout base structure to maintain its filling functionality while blocking hydrogen diffusion, thus simultaneously achieving ease of operation and hermetical sealing performance.
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 solution provides excellent hermetical sealing performance, preventing hydrogen leakage and allowing easy access to the contents by tearing the heat-sealed sheet, ensuring the hydrogen water remains contained while allowing for convenient use.
Implementation Method 1
an aluminum region of the heat sealed sheet and an aluminum region of the accommodating part of the container are in close contact with each other, so that hydrogen contained in the hydrogen water is less prone to get out of the container and the spout base
Data Source
AI summary
To provide a spout-equipped container that is excellent in hermetical-sealing performance. The spout-equipped container includes a container and a spout. The spout includes a spout base, an opening element accommodated in a cylinder of the spout base, an activating body which moves the opening element, and a heat sealed sheet which covers an inner opening which fronts an accommodating part in the spout base. The opening element is formed so as not to be get out of the spout base, is formed so as to move toward the heat sealed sheet, and has its center where a spout through hole is formed. The heat sealed sheet is formed so as to be partially torn by the opening element to make the accommodating part of the container and an outer opening of the spout base communicate with outside via the spout through hole of the opening element, and is formed so that an accommodated substance is poured outside.