Container Cap With Cuttable Connector For Tool-Free Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing caps for plastic containers require the use of special tools to remove the fixed portion after opening, making the separation and collection process time-consuming and labor-intensive due to material differences between the container and cap.
Innovation Solution
A cap design featuring a cap body with a thread portion and a fixed portion connected by a cuttable connector, including an upper and lower ring with lock projections and cutting lines, allowing the fixed portion to be easily removed without tools by cutting the connector lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fixed portion is designed to remain on the container opening after opening, then the cap body can be easily separated, but the fixed portion requires special tools for removal which increases time and labor consumption
Solution Approach 1:
The fixed portion is divided into an upper ring and a lower ring that can be easily separated from each other. The connector portion includes cuttable lines that allow the upper ring to be detached from the lower ring without special tools, enabling quick removal of the fixed portion from the container opening.
Solution Approach 2:
The upper ring is designed to be extractable from the lower ring through the cuttable connector portion. After the cap is opened, the upper ring can be easily pulled out from the container opening while the lower ring remains engaged, allowing rapid removal of the removable component without requiring nippers or special tools.
2Reliability
If the fixed portion remains engaged with the container opening, then sealing is maintained, but material separation becomes difficult due to different materials requiring special removal tools
Solution Approach 1:
The fixed portion is segmented into two rings connected by a connector with cuttable lines. This segmentation allows the upper ring to be easily separated from the lower ring after use, facilitating simple manual removal and collection without special tools, while maintaining reliable sealing when assembled.
Solution Approach 2:
The connector portion is designed with specific structural parameters including cuttable lines that change the mechanical properties of the connection. These parameters allow the connector to provide strong engagement during sealing but enable easy separation afterward through simple cutting action, resolving the contradiction between sealing reliability and ease of separation.
Data Source
Figure 1
Figure 2A~2D
Figure 3
AI summary
A cap (10) for container which comprises a cap body provided with a thread portion (12) at the inner peripheral surface of its upper portion which is engaged with a thread of an opening portion of a container, and a fixed portion connected with the cap body at a cuttable connector portion. The fixed portion comprises an upper ring (14), and a lower ring (16) provided with lock projections (20) to secure the lower portion to the opening portion of the container. The upper ring and the lower ring are connected at a connector portion (18). The lower ring is provided with at least one cutting line (43,44) extending from its bottom end to its upper end.