Paper Cup Double-Layered Crimping Structure
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Solution Overview
Problem
Existing paper cups with anti-scald layers suffer from low bonding strength between the cup sleeve and body, leading to weak supporting strength, high manufacturing costs, and increased volume and weight when stacked, due to the use of thick corrugated paper and complex manufacturing processes.
Innovation Solution
A paper cup design featuring single-layered inner and outer papers with hollow bulges and connecting parts that form a double-layered crimping structure, providing enhanced strength and insulation, while reducing paper weight and manufacturing costs through a more efficient bonding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If corrugated paper with horizontal corrugation strips is used for the cup sleeve, then the anti-scald effect is achieved, but the bonding strength between cup sleeve and body is weak
Solution Approach 1:
The cup body is divided into inner paper and outer paper layers, with the outer paper featuring segmented hollow bulges that create multiple bonding interfaces. This segmentation allows for enhanced bonding strength while maintaining the anti-scald effect through the hollow structures.
Solution Approach 2:
The invention uses a composite structure combining inner paper and outer paper with hollow bulges. The outer paper contains hollow bulges formed by embossed patterns that create both structural support and bonding surfaces, achieving both anti-scald and strong bonding properties simultaneously.
2Strength
If thick corrugated paper is used to increase supporting strength, then the cup strength is improved, but the manufacturing cost increases
Solution Approach 1:
The outer paper is designed with localized hollow bulges at specific positions to provide structural support and anti-scald functionality. This local quality enhancement allows the cup to achieve sufficient strength without requiring uniformly thick paper throughout, thereby reducing overall paper weight and cost.
Solution Approach 2:
The hollow bulges create porous structures in the outer paper that provide structural support and thermal insulation. These porous regions allow the paper to achieve high strength-to-weight ratio, reducing the need for excessive paper thickness and lowering manufacturing costs.
3Object-affected harmful factors
If corrugated paper with recessed slots is used, then the anti-scald effect is achieved, but the manufacturing process complexity increases
Solution Approach 1:
The hollow bulges are formed by pre-embossing patterns on the outer paper before the cup is assembled. This preliminary action creates the anti-scald structures and bonding interfaces in advance, simplifying the subsequent assembly process while maintaining the anti-scald effect.
4Quantity of substance
If single layered paper is used for cup body, then the manufacturing cost is reduced, but the strength is weak
Solution Approach 1:
The cup body is constructed as a composite of inner paper and outer paper layers. The outer paper contains hollow bulges that provide structural reinforcement, creating a composite structure that is stronger than single-layer paper while using controlled amounts of material.
Solution Approach 2:
The inner paper is nested within the outer paper structure, with the outer paper forming a protective layer containing hollow bulges. This nested configuration provides structural strength and thermal insulation while maintaining efficient material usage.
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 paper cup achieves improved strength and anti-scald performance with reduced paper usage and production costs, maintaining structural integrity and heat insulation when handled, by utilizing a double-layered crimping structure and bonding process.
Implementation Method 1
the inner cavity of the hollow bulge insulates the heat transfer, making the heat not transfer to the outer surface of the hollow bulges
Implementation Method 2
the inner side of the connecting part bonds to the outer side of the inner paper
Data Source
AI summary
The present paper cup comprises a cup body, and the cup body comprises inner paper and outer paper. There are hollow bulges on the outer paper, and the outer paper forms a connecting part. The inner side of the connecting part bonds to the outer side of the inner paper, and the cup rim of the outer paper extends to the cup rim of the inner paper. In addition, the outer side of the cup rim of the inner paper bonds to the inner side of the outer paper, and both cup rims of the outer paper and the inner paper bend outward to form a double layered crimping. The manufacturing process for the present paper cup includes: paper preparation, rolling, composition, sheet cutting, forming, molding and etc.