Low-Temperature Storage Package Lubricating Layer Slip Properties
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Solution Overview
Problem
Existing packaging solutions for viscous fluids, such as ketchup, fail to maintain enhanced slip properties over time due to permeation and diffusion of the slip improving agent into the resin layer, leading to adhesion issues and incomplete discharge.
Innovation Solution
A package with a container having a lubricating layer formed from a slip improving agent on its inner surface, where the agent is coated at room temperature and stored under low temperature conditions to suppress permeation, and heated above its cloud point for efficient discharge, ensuring stable slip properties and complete content usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a liquid layer is formed on the resinous surface to enhance slip properties, then slip properties are dramatically enhanced, but the modified surface characteristics disappear over time due to permeation and diffusion of the liquid into the resin layer
Solution Approach 1:
A release agent layer is introduced as an intermediary substance between the resinous inner surface and the viscous liquid contents. This release agent layer acts as a mediator that prevents direct contact and permeation between the liquid contents and the resin surface, while still providing the necessary slip properties. The release agent layer serves as a buffer that maintains surface characteristics over time by preventing the liquid from diffusing into the resin layer.
2Duration of action of stationary object
If a release agent layer is introduced to maintain slip properties, then surface characteristics are sustained, but the structure becomes more complex
Solution Approach 1:
The release agent layer is merged with the container structure by applying it directly to the inner surface during or after container formation. This integration approach combines the release agent function with the container structure, avoiding the need for separate, complex multi-layer constructions. The release agent is incorporated into the existing container manufacturing process, simplifying the overall structure while maintaining the beneficial effects.
3Duration of action of stationary object
If the container is stored at low temperature to prevent permeation, then slip properties are maintained, but discharge efficiency decreases due to increased viscosity
Solution Approach 1:
The temperature parameter is dynamically changed based on the operational phase. During storage, low temperature is maintained to prevent permeation and maintain slip properties. During discharge, the temperature is increased above the cloud point of the release agent, which changes the physical state of the release agent layer to enhance流动性 and improve discharge efficiency. This parameter change allows the system to optimize performance for different operational requirements.
4Productivity
If the container is heated above cloud point for discharge, then discharge efficiency improves, but the release agent may permeate into the resin layer
Solution Approach 1:
The release agent is preliminarily applied to the inner surface in sufficient quantity before storage and use. This preliminary action ensures that even when heating occurs during discharge, there is enough release agent remaining to prevent permeation into the resin layer. The release agent is applied in advance at a level that accounts for potential loss during heating, ensuring continuous protection of the resin surface while enabling efficient discharge.
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 package effectively maintains slip properties for a long term, allowing for prompt and complete discharge of viscous contents without adhesion, enhancing usability and reducing waste.
Implementation Method 1
a lubricating layer derived from a slip improving agent is formed on the inner surface of the container, the fluid contents are in contact with the lubricating layer
Implementation Method 2
heating the package to a temperature equal to or higher than the cloud point of the slip improving agent; then discharging the fluid contents from inside the package
Implementation Method 3
the liquid forming the liquid layer gradually permeates and diffuses into the underlying resin layer
Implementation Method 4
the liquid forming the liquid layer gradually permeates and diffuses into the underlying resin layer
Data Source
AI summary
A package for low temperature storage includes a container accommodating fluid contents, and is stored under a low temperature environment at 10° C. or lower. A lubricating layer derived from a slip improving agent is formed on the inner surface of the container. The fluid contents are in contact with the lubricating layer. When the storage environment temperature of the package is t° C. and the cloud point of the slip improving agent is c° C., the following condition: t<c+30 is satisfied.