LDPE Liquid Condiment Container for High-Viscosity Discharge
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Solution Overview
Problem
Existing liquid condiment containers for high-viscosity condiments, such as mayonnaise, face issues with deformation and aesthetic impairment when the content is reduced, and struggle with flexible discharge and controlled dispensing.
Innovation Solution
A liquid condiment container made from low-density polyethylene (LDPE) with a specific design featuring a flat shape portion, panel arrangement, and a cap structure that allows for flexible deformation and controlled discharge of high-viscosity condiments without significant shape deformation or aesthetic loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a bottle made of PET or HDPE is used, then the shape of the container is less liable to be deformed when content is reduced, but the bottle has no flexibility and requires excessive force to discharge high-viscosity liquid condiment
Solution Approach 1:
The patent changes the material parameter from rigid plastics (PET/HDPE) to flexible plastic (LDPE), which fundamentally alters the mechanical properties of the bottle. This enables the bottle to be flexibly deformed with small force to discharge high-viscosity liquid condiment while maintaining shape stability when content is reduced
2Ease of operation
If a bottle made of LDPE is used, then the bottle is flexibly deformed to easily discharge high-viscosity liquid condiment, but the shape of the container is deformed when content is reduced
Solution Approach 1:
The patent optimizes the thickness parameter of the LDPE bottle to a specific range (0.3mm to 1.5mm) that balances flexibility and shape stability. This thickness range allows the bottle to be flexibly deformed for easy discharge of high-viscosity liquid condiment while preventing excessive deformation when content is reduced
3Productivity
If excessive force is applied to a rigid bottle to discharge content, then the content is discharged, but the bottle is rapidly deformed to discharge the content at once
Solution Approach 1:
The patent changes the material parameter from rigid to flexible plastic, which fundamentally alters the discharge mechanism. Instead of requiring excessive force that causes rapid deformation and uncontrolled discharge, the flexible LDPE bottle allows controlled discharge with small force through gradual deformation
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 container effectively discharges high-viscosity condiments with a small force, maintains its shape and aesthetic appearance even when partially empty, and ensures stable self-standing and reduced likelihood of content jetting.
Implementation Method 1
the bottle is flexibly deformed to easily discharge the content even when the content is a high-viscosity liquid condiment
Implementation Method 2
the shape of the container is less liable to be deformed even when the content is reduced, and that the original aesthetic appearance of the container is less liable to be impaired
Data Source
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AI summary
A liquid condiment container (1) includes a bottle (10) and a cap (20). A condiment to be filled into the liquid condiment container (1) is a liquid condiment having a viscosity of from 5 Pa·s to 500 Pa·s, and the container has an initial volume of from 100 cm3 to 700 cm3. The bottle (10) includes a mouth (11), a body (12), and a bottom (14). The body (14) has a flat shape in horizontal transverse section in an elected state, the flat shape having a short axis Q and a long axis R that are orthogonal to a center axis X of the bottle (10). The bottle (10) is made of low-density polyethylene as a main component. The bottle (10) has an inner pressure of from -1.0 kPa to -3.0 kPa after 30 seconds from suction of air in the bottle, the air being sucked by 10% of the initial volume from a state in which the bottle (10) is completely filled with the air. Accordingly, the bottle is flexibly deformed to easily discharge its content even when the content is a high-viscosity liquid condiment, and the original aesthetic appearance of the container is less liable to be impaired even when the content is reduced.