Disposable Bag Foldable Collar Locking Notch Closure
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Solution Overview
Problem
Existing garbage bags, including those for diaper pails, lack effective and easy-to-use closure mechanisms, particularly when full, as cinching straps or knots can be cumbersome.
Innovation Solution
A disposable bag assembly with a foldable collar that collapses onto itself, featuring a locking notch to maintain a twisted closed configuration, ensuring secure sealing without the need for additional fastening devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cinching straps or knots are used to close the bag, then the bag can be sealed, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The collar structure performs the sealing function automatically through its own geometric configuration. When the collar is folded over, the notched ends interlock to maintain the twisted closed configuration without requiring user manipulation of straps or knots. The structure serves itself to maintain the sealed state.
Solution Approach 2:
The collar transitions from an open configuration during installation to a closed configuration during sealing. The dynamic folding action transforms the collar's spatial arrangement, enabling it to shift from a state suitable for insertion to a state that provides automatic sealing through its notched geometry.
2Reliability
If traditional cinching straps are used, then the bag can be closed, but the device complexity increases due to additional fastening components
Solution Approach 1:
The invention extracts the sealing function from separate fastening components and integrates it directly into the collar structure itself. The collar's notched geometry inherently provides the sealing mechanism, eliminating the need for cinching straps, clips, or other auxiliary fastening devices.
Solution Approach 2:
The sealing function is merged with the collar structure. The same component that provides structural support and attachment (the collar) also performs the sealing function through its notched configuration, combining multiple functions into a single integrated element.
3Strength
If the collar is made rigid for structural support, then the bag maintains shape, but the installation and removal becomes difficult
Solution Approach 1:
The collar exhibits dynamic mechanical properties, transitioning between flexible and rigid states. During installation and removal, the collar behaves flexibly to accommodate manipulation. During operation, it maintains sufficient rigidity to hold the twisted closed configuration through its notched interlocking geometry.
Solution Approach 2:
The collar's effective stiffness parameter changes based on its configuration. When unfolded, it is flexible for easy installation. When folded and locked into the notched configuration, it becomes effectively rigid to maintain the sealed state and resist opening forces.
Data Source
AI summary
A bag for holding trash, diaper, and any item that needs to be contained. The bag can have an enclosure body and a mouth opening where the opening is lined with a foldable frame. The foldable frame can fold out to keep the mouth opening in an open configuration, and can collapse upon itself to keep the mouth opening in a closed configuration. The foldable frame can optionally have a locking notch, a finger, or both, all of which can be used to attach to some part of the enclosure body thereby keeping the neck of the bag twisted closed. The bag can optionally have attachment points such as apertures, sleeves, strips, and loops for securing to the locking notch. In some embodiments, the collar need not be foldable.