Nested Double-Layered Cup Reducing Stacked Volume
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Solution Overview
Problem
Conventional double-layered cups occupy excessive space when stacked due to their curled-edge design, leading to increased storage and packaging requirements, which in turn raises overall costs.
Innovation Solution
A method for manufacturing a curled-edge double-layered cup involves creating an outer and inner cup unit with specific structural features, where the inner cup unit is inserted into the outer unit and its outmost surrounding wall is curled to form a smaller curled-edge unit that encloses the outer top wall, eliminating the need for additional adhesives and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional curled-edge design is used to combine outer and inner cup units, then the cups can be securely assembled, but the curled-edge portion occupies substantial space when stacked
Solution Approach 1:
The patent applies nesting by placing the inner cup unit inside the outer cup unit, with the inner curled-edge portion nested within the outer curled-edge portion. This nested configuration allows both cups to be securely assembled while minimizing the overall space occupied when stacked, directly resolving the contradiction between assembly security and space efficiency.
2Reliability
If larger curled-edge portions are used to ensure proper enclosure, then sealing effectiveness is improved, but storage space and packaging material requirements increase
Solution Approach 1:
The nested configuration of inner and outer curled-edge portions allows the sealing function to be distributed across multiple layers. The inner curled-edge provides primary sealing while the outer curled-edge provides secondary sealing, maintaining effective sealing without requiring either portion to be excessively large, thus reducing storage space requirements.
Solution Approach 2:
The sealing function is segmented between the inner curled-edge portion and the outer curled-edge portion. This segmentation allows each portion to be optimized for its specific sealing role rather than requiring a single large curled-edge structure, thereby maintaining sealing effectiveness while reducing overall space occupation.
Data Source
AI summary
A curled-edge and double-layered cup includes an outer cup unit including an outer base wall, an outer surrounding wall, and an outer top wall, and an inner cup unit disposed within the outer cup unit. The inner cup unit includes an inner base wall disposed above the outer base wall, an inner surrounding wall surrounded by the outer surrounding wall, and a curled-edge unit enclosing the outer top wall. The curled-edge unit includes an inner top wall disposed above the outer top wall, and an outmost surrounding wall having a surrounding portion connected to the inner top wall and surrounding the outer top wall, and a bottom seal portion extending inwardly from the surrounding portion and disposed under the outer top wall.