Lubricating Layer for Viscous Fluid Discharge
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Solution Overview
Problem
Existing container technologies fail to effectively improve the sliding properties of viscous substances, such as mayonnaise and ketchup, leading to poor discharge and adhesion issues, even when lubricant additives or hydrophobic oxide particles are used.
Innovation Solution
A coating composition is applied to the inner surface of containers, comprising a high-boiling liquid dispersion medium with dispersed organic solid particles, which form a lubricating layer that enhances sliding properties by allowing the particles to roll with the fluid, preventing adhesion and improving discharge efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a liquid film is formed on the surface of the base material, then the sliding property is improved, but the content still adheres on the bottom of the container
Solution Approach 1:
The patent applies a composite coating composition containing both organic solvent and inorganic particles (such as silica or alumina) dispersed therein. This composite formulation creates a coating layer that combines the lubricating effect of the organic solvent with the non-adherent properties of the inorganic particles, simultaneously improving sliding property while preventing adhesion on the bottom surface.
Solution Approach 2:
The patent creates different functional zones within the coating layer: the organic solvent provides lubrication for sliding surfaces, while the inorganic particles concentrated in certain areas provide non-adherent properties. This local differentiation of material properties allows the coating to perform multiple functions - improving sliding where needed while preventing adhesion in other areas.
2Object-generated harmful factors
If hydrophobic oxide particles are adhered on the inner surface, then non-adhering property is improved, but sliding property becomes very weak
Solution Approach 1:
The patent merges two previously separate approaches into a single coating system: it combines hydrophobic oxide particles (for non-adhering property) with organic solvents having appropriate viscosity and surface tension (for sliding property). The resulting composite coating layer integrates both functions, allowing particles to provide non-adhesion while the liquid matrix provides lubrication for sliding.
3Ease of operation
If lubricant additive is added to the synthetic resin, then sliding property is improved, but the complexity of material formulation increases
Solution Approach 1:
The patent uses an organic solvent as an intermediary substance that forms a liquid film between the synthetic resin base material and the viscous content. This intermediary layer provides the sliding property without requiring complex modification of the resin itself, simplifying the overall material formulation while still achieving the desired lubrication effect.
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 lubricating layer significantly improves the sliding properties of viscous substances, ensuring effective discharge and reducing adhesion on the container bottom, even for substances with high viscosities like mayonnaise and ketchup, without requiring additional treatments like heating.
Implementation Method 1
the solid particles are capable of rolling in the lubricating layer
Implementation Method 2
forming a lubricating layer on the inner surface of a container
Data Source
Figure 1~2
Figure 3(a)~4
AI summary
A coating composition for forming a lubricating layer 3 on the surface of a base material 1 formed in a predetermined shape so as to exhibit improved sliding property to fluid substances, the coating composition containing, as a dispersion medium, a liquid 5 that is a component constituting the lubricating layer 3, and the dispersion medium containing solid particles 7 dispersed therein as a component constituting the lubricating layer 3. The lubricating layer 3 formed by using the coating composition exhibits more improved sliding property to fluid substances. The coating composition, therefore, can be favorably used for forming the lubricating layer 3 on the inner surfaces of the packing materials such as containers and lids.