Vented Bottle Neck with Non-Circular Internal Grooves

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Solution Overview

Problem

Conventional bottle manufacturing processes and designs do not effectively enhance product dispensing flow without requiring unconventional neck ring equipment, blank or blow mold bodies, or closure designs, particularly in longneck bottles where improved venting is needed.

Innovation Solution

A method and tooling for forming glass bottles with non-circular neck interiors using plungers with non-circular cross-sections during the press-and-blow or blow-and-blow processes, allowing for the creation of bottles with vented necks featuring internal grooves or features that promote improved liquid flow without altering conventional manufacturing equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional circular neck interiors are used in bottle manufacturing, then manufacturing simplicity is maintained, but liquid flow rate and dispensing efficiency are limited

Engineering Contradiction:

Improveliquid flow rateVSAvoidneck interior geometry

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies asymmetry by transitioning from a conventional circular neck interior to a non-circular neck interior with flattened sides and rounded corners. This asymmetric geometry creates larger surface area and optimized flow paths that enhance liquid flow rate and dispensing efficiency without requiring complex manufacturing equipment modifications

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The patent applies local quality by modifying only the neck interior geometry while maintaining conventional external bottle dimensions and manufacturing processes. The non-circular cross-section with specific radius variations at different heights creates localized flow optimization without affecting the overall bottle structure or requiring changes to blank molds or blow molds

Inventive Principle:

Principle #3Local quality

2Productivity

If non-circular neck interiors are formed using plunger with non-circular cross-section, then dispensing efficiency is improved by up to 10%, but manufacturing precision requirements increase

Engineering Contradiction:

Improvedispensing efficiencyVSAvoidneck interior dimensional accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by defining specific geometric parameters for the non-circular neck interior, including radius variations (R1, R2, R3) at different heights and cross-sectional dimensions. These controlled parameter changes enable precise reproduction of the desired geometry through the plunger design while maintaining manufacturing feasibility and consistent dispensing efficiency improvement

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP2928836B1Bottle with vented neck and associated process for producing it

Publication Date: 2019.03.06 OWENS BROCKWAY GLASS CONTAINER INC

Figure 1~3A
Figure 3B~3D
Figure 4~7

AI summary

A (20, 120, 220, 320) includes a body (22, 122) having a closed end (24), a (26, 126) spaced from the end, a neck (28, 128, 228) extending from the shoulder, and a neck finish (32, 132, 232) at an end of the neck for of a closure, characterized in that the neck finish and at least a portion of the neck adjacent to the neck finish have non-circular internal surfaces. A method for producing said bottle is also disclosed.