Multi-part Paper Lid Reinforcing Ring Connection
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Solution Overview
Problem
Existing multi-part lids made of paper materials face challenges in securing a stable and reliable connection to container rims, leading to potential slippage and instability when stacked, and existing manufacturing methods are not optimized for ease of production.
Innovation Solution
A multi-part lid design featuring a one-piece base body with a lid collar and a reinforcing ring connected via a peripheral frame, incorporating a circumferential bead or frame that securely engages the container rim, allowing for stable stacking and easy manufacturing due to accessible design features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-part lid with reinforcing ring is used, then the connection stability to container rim is improved, but the device complexity increases
Solution Approach 1:
The reinforcing ring is integrated with the lid collar through a circumferential frame, merging two separate components into a unified structure. This integration maintains the stabilizing function of the reinforcing ring while reducing the number of separate parts, thereby improving connection stability without proportionally increasing device complexity
Solution Approach 2:
The lid is divided into functional segments: a base body with lid collar and a separate reinforcing ring connected via circumferential frame. This segmentation allows each component to perform its specific function optimally - the base body provides the sealing function while the reinforcing ring provides structural stability, resolving the contradiction between reliability and complexity
2Reliability
If the lid collar extends upwards away from the container, then the sealing function is improved, but the stacking stability deteriorates
Solution Approach 1:
The reinforcing ring acts as a counterbalancing element that compensates for the instability caused by the upward-extending lid collar. By providing downward structural support and a stable base for stacking, the reinforcing ring counteracts the top-heavy configuration, enabling both effective sealing and stable stacking
3Strength
If a circumferential frame connects the lid collar and reinforcing ring, then the structural strength is improved, but the manufacturing difficulty increases
Solution Approach 1:
The circumferential frame is designed with optimized geometric parameters that balance structural strength requirements with manufacturing feasibility. By carefully selecting the frame's dimensions, thickness, and connection geometry, the design achieves adequate structural strength while remaining compatible with standard paper material processing and assembly techniques
Data Source
Figure 1~5
Figure 6~10
Figure 11~15
AI summary
The cover (10) has a single-piece base body (12) including a cover plate and a circumferential cover collar extending from the cover plate. A cover collar extends upwards away from a container. A reinforcement ring (14) is connected to the cover collar by a peripheral shroud or skirt. The reinforcement ring is arranged on a side of the cover plate opposite to the cover collar. The ring includes a peripheral skirt forming a circumferential step along the periphery on a radially interior side of the reinforcement ring, and/or a circumferential bead along the periphery. An independent claim is also included for a method for manufacturing a multipart lid from a paper material.