Tapered Closure With Constant Thread Height During Filling
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Solution Overview
Problem
Existing closures are prone to being inadvertently removed from containers during filling and capping operations due to insufficient thread height, leading to misapplied closures, leaks, and spills.
Innovation Solution
The closure and container are designed with a tapered configuration, featuring constant thread height and radial taper, ensuring secure placement and retention before full securing, using a tamper-evident band and attachment band to maintain closure integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the closure is not firmly seated on the container neck, then the closure can be easily placed during filling operations, but the closure may be disturbed and fall off during transport and handling
Solution Approach 1:
The closure is designed with a tapered outer surface that matches the tapered inner surface of the container neck, creating a preliminary securing effect during placement. This taper configuration ensures that the closure is firmly seated as it is placed, preventing it from being disturbed or falling off during subsequent transport and handling operations.
2Ease of operation
If the thread height of the closure is reduced, then the closure can be easier to place on the container, but the closure becomes prone to being inadvertently removed during filling and capping operations
Solution Approach 1:
The closure incorporates a tapered outer surface with a specific taper angle that complements the tapered inner surface of the container neck. This parameter change in geometry creates a friction fit and mechanical interference that secures the closure during filling and capping operations, while still allowing for easy placement. The taper configuration optimizes both ease of placement and thread engagement security.
Data Source
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AI summary
A closure for a container includes a top panel, a skirt depending from the top panel and extending circumferentially about a central axis, a tamper-evident band attached to the skirt, and at least one thread extending from an interior surface of the skirt. The skirt extends from a first end attached to the top panel to a second end opposite the first end. The skirt is tapered radially outward from the first end to the second end such that a diameter of the skirt at the second end is greater than the diameter of the skirt at the first end.