Multi-material Container Lid with Breakable Bridge for Tamper Detection
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Solution Overview
Problem
Existing container lids fail to prevent leakage and counterfeiting, especially when refilled bottles are tampered with by removing the lid without breaking the initial sealing mechanism, and lack multi-color and multi-material functionality for enhanced security and usability.
Innovation Solution
A container lid design featuring an upper and lower lid connected by a connector part that breaks into a stopper when pulled, utilizing embossed lines and a water droplet-shaped hole for easy handling, made from a multi-injection process combining High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE) for secure sealing and anti-counterfeiting, with a sealing mechanism to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid is designed with a strong sealing mechanism to prevent leakage, then the sealing performance is improved, but the ease of opening and detecting tampering deteriorates
Solution Approach 1:
The lid is divided into multiple functional segments: an upper lid, a lower lid, and a connecting part with a breakable bridge. This segmentation allows the lid to provide strong sealing through the upper lid while enabling easy opening and tampering detection through the breakable connecting part that snaps when opened.
Solution Approach 2:
The connecting part is pre-designed with a breakable bridge structure that is intended to break during the opening process. This preliminary design of the breaking mechanism ensures that when the lid is opened, the bridge automatically breaks to indicate tampering, eliminating the need for additional detection mechanisms.
2Ease of manufacture
If the lid uses a single material for simplicity, then the manufacturing complexity is reduced, but the anti-counterfeiting and security functionality deteriorates
Solution Approach 1:
The lid is constructed using composite materials with different properties: the upper lid is made from a first material (such as HDPE) providing structural strength and sealing, while the lower lid is made from a second material (such as LDPE) providing flexibility and breakability. This composite structure enables both secure sealing and anti-counterfeiting features through the differential material properties.
3Device complexity
If the lid is designed as a single integrated piece, then the structural simplicity is improved, but the functionality for easy opening and tampering detection deteriorates
Solution Approach 1:
The lid is segmented into an upper lid, lower lid, and connecting part with a breakable bridge. This segmentation provides easy opening functionality through the breakable bridge while maintaining relative structural simplicity through the modular design that can be manufactured as integrated components.
Solution Approach 2:
The breakable bridge is pre-designed into the connecting part structure, creating a preliminary breaking mechanism that automatically activates during opening. This eliminates the need for complex opening mechanisms while providing clear tampering detection through the bridge break.
4Reliability
If the lid uses multi-material injection process, then the multi-color and anti-counterfeiting properties are improved, but the manufacturing complexity and cost deteriorates
Solution Approach 1:
The lid utilizes multi-material injection molding to create composite structures with different materials (HDPE and LDPE) in specific regions. This provides anti-counterfeiting properties through the multi-color and multi-material design while the integrated manufacturing process controls the added complexity.
Solution Approach 2:
The lid incorporates multi-color design elements through the different materials used in the upper lid, lower lid, and connecting parts. The color differentiation provides visual indicators for anti-counterfeiting and tampering detection, with each material section providing distinct visual characteristics.
Data Source
AI summary
A container lid intended to be used as a lid for any kind of container/bottle, and comprising an upper lid (1) and a bottom part (2) connected by a connecting part (5). The container lid is processed by multi-injection of multi-colors plastic technology to produce a container lid made of multi-materials. The connecting part (5) extends around the container lid and is adapted to be broken up to a stopper part (7) when a pulling part (4) is pulled. The container lid is intended for plastic bottles including bottled drinking water and/or flavored beverage bottles to prevent counterfeiting or imitating.