Dual Thread Nozzle Cap Assembly Hermetic Seal

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Solution Overview

Problem

Existing nozzle and cap assemblies for dispensing pouches fail to maintain a hermetic seal, leading to confectionery leakage and hardening, which results in clogging and increased manufacturing complexity and costs.

Innovation Solution

A dual-threaded nozzle and cap assembly with a hollow unitary nozzle and a cap that interfaces with a substantially planar rim to create a hermetic seal, using concentrically aligned first and second threaded sections of different diameters to securely engage and seal the nozzle, minimizing the risk of leakage and hardening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a nozzle and cap assembly is used to protect the nozzle opening, then damage to the nozzle opening is prevented, but a space exists between the nozzle and cap that allows confectionery to leak and harden

Engineering Contradiction:

Improvenozzle opening protectionVSAvoidsealing effectiveness

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

A flexible membrane seals the gap between the cap and nozzle, creating a hermetic seal that prevents confectionery from hardening while maintaining nozzle protection. The membrane flexes to accommodate the space between components without compromising the seal.

Inventive Principle:

Principle #30Flexible shells and thin films

2Reliability

If multiple parts and molded features are added to the nozzle and cap assembly, then sealing effectiveness is improved, but manufacturing complexity and cost increase

Engineering Contradiction:

Improvesealing effectivenessVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The membrane is integrated directly into the cap structure during molding, combining two separate components (cap and membrane) into a single manufactured part. This reduces assembly steps and manufacturing complexity while maintaining the hermetic seal.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If decorating tips are interchanged to create different extruded designs, then design versatility is improved, but the confectionery is exposed to air causing drying and surface hardening

Engineering Contradiction:

Improvedesign varietyVSAvoidair exposure

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The cap is designed to remain on the nozzle and maintain the hermetic seal throughout the tip interchange process. Users can swap tips without removing the cap, preventing air exposure and hardening before the actual decorating action begins.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The cap with its integrated membrane acts as an intermediary barrier between the confectionery and air. It allows tip interchange while maintaining the sealed environment, mediating between the need for versatility and the need to prevent hardening.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9617054B2Dual thread nozzle and cap assembly for dispensing pouch

Publication Date: 2017.04.11 DECKO PRODUCTS LLC

AI summary

A nozzle and cap assembly for a dispensing pouch includes a hollow unitary nozzle terminating in a rim. The nozzle including a first exterior threaded section and a second exterior threaded section having a different diameter than a diameter of the first exterior threaded section. A cap receives the nozzle and has an inner surface interfacing with the rim to seal the nozzle.