Paper Cup Insulation Space Sealing for Stacking Reliability
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Solution Overview
Problem
Conventional paper cups with insulating materials for hot beverages face issues with insulation material porosity or brittleness, leading to material crumbling and potential contamination when stacked, which often results in the omission of insulating materials to prevent such issues.
Innovation Solution
A paper cup design featuring a conical casing and base with an outer jacket forming an insulating space, where the space is partially filled with insulation material and sealed at the bottom and optionally top with circumferential seals to prevent material escape, ensuring effective insulation and stackability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If insulating material is introduced into the insulating space, then the insulating effect is increased, but the insulation material may crumble and fall into adjacent cups when stacked
Solution Approach 1:
A retaining structure is introduced as an intermediary element between the insulation material and the cup structure. This retaining structure prevents the insulation material from crumbling and falling into adjacent cups during stacking, while still allowing the insulation material to provide thermal insulation. The retaining structure acts as a mediator that resolves the conflict between maintaining insulation effectiveness and ensuring stacking reliability.
Solution Approach 2:
The retaining structure is pre-formed and positioned before the cup is fully assembled or before stacking occurs. By preparing the retention mechanism in advance, the insulation material is secured to prevent crumbling during subsequent stacking operations, eliminating the need for corrective actions after the problem occurs.
2Loss of energy
If insulating material is used in the insulating space, then the insulation effect is enhanced, but parts of the insulation material can float up and contaminate the beverage
Solution Approach 1:
The retaining structure serves as an intermediary barrier that confines the insulation material within the insulating space. It prevents the insulation material from floating up into the beverage while still allowing thermal insulation to function. The retaining structure mediates between the need for effective insulation and the requirement to prevent contamination.
Solution Approach 2:
The harmful aspect (insulation material floating up) is extracted and contained by the retaining structure. The retaining structure removes the risk of contamination while preserving the beneficial insulation effect, effectively separating the harmful potential from the useful function.
3Device complexity
If the outer jacket and casing touch directly, then the structure is simpler, but the insulation effect is reduced
Solution Approach 1:
The retaining structure is strategically positioned only where needed to maintain the insulating gap, rather than providing continuous support throughout. This localized approach maintains effective insulation at critical areas while minimizing structural complexity. The retaining structure provides local reinforcement exactly where the insulating material needs support to prevent crumbling.
Solution Approach 2:
Rather than providing complete continuous support between the outer jacket and casing, the retaining structure provides partial support at specific locations. This partial action is sufficient to prevent insulation material crumbling and maintain the insulating gap, avoiding the need for a more complex complete support structure.
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 effectively maintains insulation while allowing for problem-free stacking and handling, preventing insulation material from entering adjacent cups and ensuring the integrity of the beverage, even when cups are stacked deeply or stored upside down.
Implementation Method 1
The insulation space serves to keep a drink contained in the interior warm for as long as possible. This is done in particular by preventing heat transport between the beverage and the surrounding atmosphere.
Implementation Method 2
a lower seal that runs all the way around the circumference is formed at least below the insulation material to prevent the insulation material escaping between the jacket and the outer jacket
Data Source
AI summary
The invention relates to a cup (10) made of a paper material or a paper-like material with a fillable interior, wherein the cup has a shell (20) and an outer shell (30) between which an insulation space (40) is formed. The insulation space contains an insulating material which is prevented from escaping the insulation space by at least one lower seal (60).