PET Liquid Container Assembly With Plug-Seal and Laminar Pouring
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Solution Overview
Problem
Existing integrated liquid container systems, such as JIBs, face challenges in recyclability, material costs, and inefficient sealing mechanisms, particularly with HDPE containers, which do not meet APR guidelines and require foil seals, leading to turbulent flow and increased risk of cracking.
Innovation Solution
The use of PET-based thermoplastic polymers for liquid delivery containers, combined with corrugated cardboard housing, allows for tight manufacturing tolerances, eliminating the need for foil seals and enabling a plug-seal mechanism, while ensuring recyclability and reducing material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HDPE containers with foil seals are used, then sealing capability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent removes the foil seal component from the container system entirely. By using HDPE material with integrated sealing structures (overmolded necks, integrated caps), the complex multi-material construction is eliminated in favor of a simpler single-material approach that achieves adequate sealing without additional sealing layers.
Solution Approach 2:
The patent changes the material parameters by using HDPE with specific density ranges (0.93-0.97 g/cm³) and incorporating additives like antioxidants and UV stabilizers. The overmolding process modifies the neck structure to provide integral sealing surfaces, transforming the sealing mechanism from a separate foil layer to an integrated structural feature.
2Reliability
If foil seals are used for sealing, then sealing effectiveness is improved, but recyclability deteriorates
Solution Approach 1:
The patent employs a homogeneous single-material construction using HDPE throughout the entire container body, neck, and cap components. This eliminates material heterogeneity caused by foil seals or multi-layer structures, making the entire container recyclable as one material type and simplifying the recycling process.
Solution Approach 2:
The patent designs the container as a disposable single-use system where the entire HDPE structure (without valuable metals or complex composites) can be easily recycled or disposed of. The integrated design without foil seals ensures the container meets recycling guidelines and can be processed through standard plastic recycling streams.
3Manufacturing precision
If tight manufacturing tolerances are implemented, then sealing precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines the sealing function directly into the molded HDPE structure itself through overmolding techniques. The neck and cap are formed as integral parts of the container body in one or two injection molding steps, eliminating the need for separate sealing components and the tight tolerances required for assembling multiple parts with precise mating surfaces.
4Device complexity
If integrated cap design is used, then device complexity is reduced, but sealing reliability may worsen
Solution Approach 1:
The patent incorporates sealing features directly into the molded HDPE structure before assembly. The overmolded neck includes pre-formed sealing surfaces and rib structures that guide cap placement and ensure proper sealing engagement, eliminating the need for separate gaskets or complex sealing mechanisms while maintaining adequate sealing reliability for single-use applications.
Data Source
AI summary
An integrated liquid container system (100) includes a housing (102) and a liquid delivery container (104). The housing includes a housing top portion (200) having a neck aperture (204), a housing bottom portion (202) opposite the housing top portion, and a housing body portion (206) extending between the housing top portion and the housing bottom portion and defining a housing inner cavity (208). The housing body portion includes a first surface (210) and at least one aperture (212) extending through the first surface of the housing body portion. The liquid delivery container includes a container top portion (300) having a neck (304), a container bottom portion (302) site the container top portion, and a container body portion (306) extending between the container top portion and the container bottom portion to define a container inner cavity (308) that stores liquid. The liquid delivery container being able to be received within the container inner cavity such that the neck aperture circumferentially extends around the neck.