PET Beverage Container with Pin-Bore Base Sealing and Gas Barrier

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Solution Overview

Problem

Current plastic beverage containers lack improvements in consumer experience, manufacturing efficiency, and environmental stewardship, particularly in terms of gas barriers and structural design.

Innovation Solution

A plastic beverage container made of polyethylene terephthalate (PET) with an oxygen ingress barrier and carbon dioxide retention barrier, featuring a unique base and cup portion design with a pin and bore configuration, and varying diameters to enhance sealing and stability, manufactured using injection molding and stretch blow molding processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional plastic containers are used, then manufacturing is simple, but gas barrier performance is insufficient

Engineering Contradiction:

Improvegas barrier performanceVSAvoidcontainer structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The container employs a multi-layer composite structure combining PET material with oxygen ingress barrier and carbon dioxide retention barrier layers. This composite construction provides superior gas barrier performance while maintaining manufacturing feasibility through integrated molding processes.

Inventive Principle:

Principle #40Composite materials

2Ease of operation

If basic container design is used, then manufacturing is efficient, but consumer experience is limited

Engineering Contradiction:

Improveconsumer experienceVSAvoidcontainer design

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The container features a pin extending from the closed end that fits into a corresponding bore in the cup portion, creating a localized engagement feature. This local structural enhancement improves consumer experience through better sealing and handling without requiring complex overall redesign.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The base includes a cup portion with a bore that receives the pin from the container body, creating a precise fit that ensures proper positioning and sealing. This equipotential design feature enhances consumer experience through reliable closure without adding significant complexity.

Inventive Principle:

Principle #12Equipotentiality

3Reliability

If conventional sealing methods are used, then manufacturing is straightforward, but sealing performance is inadequate

Engineering Contradiction:

Improvesealing performanceVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The pin and bore features are integrated into the container body and base structures respectively, combining the sealing function with the existing container components. This merging approach improves sealing performance without requiring separate sealing mechanisms or complex assembly processes.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP3386871B1Beverage container

Publication Date: 2020.10.21 PLASTIPAK PACKAGING INC

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AI summary

A beverage container assembly includes a base, a beverage container, and a sealable cap. The beverage container includes an open end and a closed end opposite the open end. The open end of the beverage container includes an external thread. The sealable cap includes an internal thread and is disposed on the open end of the beverage container creating a sealed opening. The base is disposed on the closed end of the beverage container and the cap seals the open end of the beverage container.