Clip-Type Container Carrier With Locking Tabs for Secure Rim Retention
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Solution Overview
Problem
Existing container carriers, particularly clip-type carriers, face challenges in securely retaining containers due to deformation and detachment issues, especially when handling containers with varying sizes and shapes.
Innovation Solution
The carrier design incorporates a first layer with elliptical apertures and a second layer with locking tabs, where the layers are secured together, featuring castellations and foldable flaps to enhance retention and grip, and uses a roller drum application method for efficient attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-layer carrier design is used, then the structure is simple and easy to manufacture, but the retention and grip on containers are insufficient
Solution Approach 1:
The carrier is divided into two separate layers: a first layer with apertures for container insertion and a second layer with locking apertures and locking tabs. These layers are secured together to form a complete carrier, allowing each layer to perform its specific function independently while working together to provide secure container retention
Solution Approach 2:
The locking tabs of the second layer extend through the apertures of the first layer, creating a nested structure where the locking mechanism is integrated within the aperture structure. This nesting allows the locking tabs to engage with container rims while being supported by the first layer structure
2Productivity
If circular apertures are used in the carrier, then the manufacturing is simple, but the application process is inefficient and grip is reduced
Solution Approach 1:
The apertures in the first layer are designed with an elliptical shape rather than circular, creating asymmetry that provides directional guidance during the rolling application process. The elongated dimension of the ellipse aligns with the direction of application, allowing the carrier to be efficiently rolled onto containers while maintaining secure grip
3Reliability
If locking tabs are made flexible for easy engagement, then the application is easier, but the tabs deform and detach from container rims
Solution Approach 1:
The locking tabs are pre-formed with a curved or bent shape before engagement, allowing them to flex during the rolling application process and then spring back to engage securely under the container rim. This pre-formed configuration provides the necessary flexibility for engagement while ensuring secure retention once applied
Solution Approach 2:
The locking tabs are constructed from flexible material that can deform during application but maintains its structural integrity. The material properties allow the tabs to bend during the rolling process and then return to their original shape, ensuring secure engagement with the container rim while preventing permanent deformation
Data Source
AI summary
A clip type carrier for packaging articles of the type having a rim, bead, chime, undercut, waist or the like. The carrier comprises a first layer having a plurality of generally circular apertures and a second layer having a plurality of respective locking apertures. The locking apertures are provided with a plurality of locking tabs for engaging under an article rim in use. An aggregate effective aperture diameter, being approximately the generally circular aperture minus twice the thickness of the locking tabs, is greater than the diameter of the container rim, causing formation of a reinforcing rim at the periphery of the generally circular aperture once applied.