Integrated Package Closure With Breakable Seal And Hinge
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Solution Overview
Problem
Existing package closures made of plastic materials are not user-friendly and require significant material consumption, lacking efficient production methods and reliable sealing mechanisms, especially for liquid foodstuff containers.
Innovation Solution
A package closure formed in a single integrated piece with a cap, neck, and folded portion, featuring a breakable notch and hinge for easy opening, a snap-lock mechanism, and a sealing ring for tamper-proof and efficient sealing, which can be produced using a tool core system to ensure efficient assembly and attachment to the package.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a package closure is made from multiple separate components, then assembly flexibility is improved, but device complexity and material consumption increase
Solution Approach 1:
The patent combines the cap, neck, and sealing elements into a single integrated package closure formed from one piece of plastic material. This merging of components reduces the total number of parts, simplifies assembly, and decreases material consumption while maintaining manufacturing flexibility through integral forming processes
2Reliability
If a package closure uses traditional sealing mechanisms, then sealing reliability is maintained, but material consumption increases
Solution Approach 1:
The patent employs a thin sealing flange formed integrally with the cap that flexes to create a reliable seal against the package opening. This flexible sealing mechanism eliminates the need for additional sealing rings or gaskets, maintaining sealing reliability while significantly reducing material consumption
3Reliability
If the cap is permanently sealed, then sealing reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent divides the cap into two functional segments: a breakable seal portion that maintains sealing reliability when intact, and a removable top portion that provides ease of operation when opened. The breakable seal ensures secure closure while the detachable top allows convenient access to contents
4Reliability
If pressure buildup is prevented, then safety is improved, but productivity deteriorates
Solution Approach 1:
The patent incorporates a pre-formed breakable seal that automatically breaks when opening force is applied, preliminarily preventing pressure buildup during normal use. This pre-engineered failure point ensures safety by controlled pressure release while maintaining fast opening speed through the simple breaking action
Data Source
AI summary
A package closure (10) comprising a neck (12), a cap (11) for closing an opening of the neck (12), and a folded portion (21) connecting the neck (12) and the cap (11), wherein the neck (12) has an axis (A) and is formed with a tubular portion (16) and an inward projecting sealing flange (18), wherein the cap (12) is formed with a top portion (13) for covering the opening of the neck, and an axially extending sealing ring (19) to interact with the sealing flange (18) to form a seal between them. The neck (12), the cap (11) and the folded portion (21) are formed in a single integrated piece. The cap (11) is further formed with an axially extending wall (14) arranged radially outside of the tubular portion (16) of the neck (12), wherein the folded portion (21) connects the wall (14) of the cap (11) with the neck (12). The top portion (13) of the cap (11) is connected to the wall (14) through a breakable notch (23) and a hinge (24), wherein the top portion (13) is openable by tearing along the notch (23) and folding along the hinge (24). Disclosed is also a method for producing the package closure (10).