Radial Threading Container Neck Design for Tamper Evidence
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Solution Overview
Problem
Existing container necks and caps require large amounts of plastic material and complex, expensive molds for manufacturing, leading to long forming cycles and increased production costs due to their large axial dimensions and complex threading designs.
Innovation Solution
A container neck with a reduced height and simplified threading design, featuring a helix arrangement with contrasting abutting surfaces that facilitate the separation of the tamper-evident ring from the cap, reducing material usage and forming time, and allowing for the use of more straightforward molds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional container necks with large axial dimensions are used, then the threading structure provides sufficient mechanical engagement, but the quantity of plastic material required increases significantly
Solution Approach 1:
The patent transitions from traditional axial threading to a radial threading arrangement where threads extend radially outward from the neck axis. This dimensional change allows the threading to engage the cap effectively while reducing the axial height of the neck, thereby decreasing plastic material consumption without compromising mechanical engagement strength
2Strength
If traditional container necks with large axial dimensions are used, then the threading structure provides sufficient mechanical engagement, but the forming cycle time increases
Solution Approach 1:
By relocating the threading structure from an axial configuration to a radial configuration, the patent reduces the axial dimension of the neck that requires forming. This dimensional transformation shortens the forming cycle time while preserving the mechanical engagement capability of the threading through its radial orientation
3Strength
If traditional container necks with large axial dimensions are used, then the threading structure provides sufficient mechanical engagement, but the mold complexity and cost increase
Solution Approach 1:
The patent simplifies mold design by changing the threading orientation from axial to radial. This dimensional change allows the use of simpler mold cavities that form threads in the radial direction, reducing mold complexity and manufacturing cost while maintaining effective mechanical engagement between the neck and cap
4Strength
If traditional caps with large axial dimensions are used, then they can accommodate the neck threading, but the quantity of plastic material required for the cap increases
Solution Approach 1:
The patent enables cap design with reduced axial height by implementing radial threading that engages the neck effectively. This dimensional change allows the cap to maintain strong mechanical connection to the neck while requiring less plastic material, as the cap does not need to extend axially to accommodate traditional threading structures
5Strength
If traditional caps with large axial dimensions are used, then they can accommodate the neck threading, but the forming cycle time increases
Solution Approach 1:
By adopting radial threading configuration, the patent reduces the axial height requirement for the cap. This dimensional transformation allows the cap to be formed more quickly with shorter cycle times, as less material needs to be molded and cooled, while still providing adequate mechanical engagement with the neck
Data Source
AI summary
A container comprises a neck provided with a thread arrangement on which a cap can be screwed as well as a contrast arrangement for interacting with an opening indicating device of the cap the contrast arrangement being provided along a helix arrangement of the thread arrangement; cap comprises a thread arrangement suitable for interacting with a further thread arrangement of a neck of a container, and an opening indicating device provided with a stop arrangement, the stop arrangement being provided along a helix arrangement of the thread arrangement.