Container-Unroller With One-Way Extraction And Interchangeable Cutting

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Solution Overview

Problem

Current containers for food grade oven paper, aluminum film, or sheet rolls lack mechanisms for safe and reliable cutting and anti-rewrapping, leading to contamination risks and difficulties in film extraction due to the absence of effective cutting tools and secure roll fixation.

Innovation Solution

A container-unroller with integrated electric and tear cut mechanisms, featuring interchangeable devices for hot electric cut and tear cut, along with one-way rotation control and anti-rewrapping functionality, to ensure safe, efficient, and contamination-free film extraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a saw-toothed bar is used for cutting film or sheet, then cutting function is provided, but safety deteriorates due to potential contact with dangerous edges

Engineering Contradiction:

Improvecutting functionVSAvoidsafety

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The cutting function is extracted from the container structure and placed in a separate handheld device. The device for tear cut includes a saw-toothed bar that is held by the user, separating the cutting action from the container body, thus eliminating the safety hazard of fixed sharp edges while maintaining the cutting capability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The handheld cutting device acts as an intermediary between the user and the film/sheet material. Instead of the container directly providing sharp edges, the user-mediated device performs the cutting action, introducing a safe interface that controls the interaction between the user and sharp elements.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the container is opened easily for access, then ease of operation improves, but reliability deteriorates due to contamination risk from outside agents

Engineering Contradiction:

Improveaccess to filmVSAvoidprotection from contamination

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The container is pre-equipped with all necessary extraction and cutting tools before use. The slit is positioned and sized to allow only the intended extraction operation, and the cutting device is prepared in advance, eliminating the need for manual opening that could compromise containment and introduce contamination.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The container with its integrated slit and interchangeable cutting devices provides multiple functions (extraction, cutting, containment) through a single sealed structure. This multi-functional design maintains reliability by keeping the container closed while still enabling all necessary operations through the controlled slit interface.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of manufacture

If the roll is left free inside the container, then ease of manufacture improves, but productivity deteriorates due to time loss in finding film edge and manual opening

Engineering Contradiction:

Improveroll placementVSAvoidextraction efficiency

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The roll is positioned and oriented in advance during container assembly, with the leading edge of the film aligned with the slit opening. This preliminary positioning eliminates the need for users to manually search for the film edge or open the container, enabling immediate extraction and significantly improving productivity.

Inventive Principle:

Principle #10Preliminary action

4Adaptability or versatility

If a single container design is used for all materials, then adaptability improves, but manufacturing precision deteriorates due to different cutting requirements for different materials

Engineering Contradiction:

Improvematerial compatibilityVSAvoidcutting effectiveness

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The container system is made dynamic through interchangeable cutting devices that can be swapped based on the material being processed. The device allows rotation between different cutting configurations (tear cut for film, electric cut for aluminum), enabling the same container to adapt to different materials while maintaining optimal cutting precision for each material type.

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The container-unroller provides a safe, reliable, and cost-effective solution for cutting and extracting film or sheet rolls without rewrapping, reducing contamination risks and operational costs while facilitating easy handling and hygiene.

Implementation Method 1

allowing, as desired, the film to be cut by contact with an heated element as a result of electric current flow

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS9896297B2Container-unroller with tear cut and electric cut, provided with a mechanism for the anti-rewrapping one-way extraction of film, aluminium sheet or similar wrapped around a roll

Publication Date: 2018.02.20 DE ROSSI PATRIZIO

AI summary

A container-unroller for film, aluminum sheet or similar material wrapped around a roll where the container-unroller has a tubular body for the accommodation of a roll to be contained and a means for control of one-way rotation of said roll. A means for making a hot electric cut and a means for making a tear cut are positioned on the same device where the means for making a tear cut are a metallic saw-toothed bar, connected to electric current. means for making a hot electric cut.