Packaging Film Length Control via Side Fold Distance

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Solution Overview

Problem

Existing packaging methods require numerous film parameters to be manually entered, leading to inefficiencies, errors, and excessive film consumption, which can result in poor packaging quality and increased costs.

Innovation Solution

A simplified method where only the thickness, width, and distance between side folds of the film are input, with the control means calculating the necessary film segment length and optimizing the packaging process, including welding time and cooling, to reduce errors and film waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple film packaging parameters are manually entered into the input means, then the packaging process can be controlled, but the operation becomes time-consuming and error-prone

Engineering Contradiction:
Improvepackaging qualityVSAvoidoperator input complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The control means automatically determines the packaging parameters (film length, welding time, cooling time) based on the film characteristics entered by the operator. The system serves itself by calculating optimal parameters without requiring manual input of each parameter, thereby reducing operational complexity while maintaining packaging quality through automated control

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manual mechanical process of entering multiple parameters is replaced by an automated computational system. The control means uses algorithms to calculate the necessary packaging parameters based on film properties, substituting the manual input mechanism with an automated digital calculation and control system

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If excessive film is used for packaging to ensure adequate coverage, then packaging quality is maintained, but film consumption increases and costs rise

Engineering Contradiction:
Improvepackaging qualityVSAvoidfilm consumption
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The control means precisely calculates and adjusts the film length parameter based on the specific article dimensions and film characteristics. By optimizing this parameter, the system uses exactly the amount of film needed for adequate coverage without excess, thereby reducing film consumption while maintaining packaging quality

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system uses feedback from the entered film characteristics and article dimensions to automatically adjust the packaging parameters. The control means continuously optimizes the film length based on the specific requirements of each packaging task, ensuring minimal film usage while achieving complete coverage

Inventive Principle:
Principle #23Feedback

3Ease of operation

If film packaging parameters are entered based on operator experience, then packaging can be performed, but errors may occur that are not immediately apparent

Engineering Contradiction:
Improvepackaging operationVSAvoidpackaging quality
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The manual experience-based parameter entry is replaced by an automated calculation system. The control means computes the correct packaging parameters based on objective measurements of film properties and article dimensions, eliminating human error while maintaining ease of operation through simple initial data entry

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The control means acts as an intermediary between the operator's simple input and the complex packaging process. It translates basic film characteristic data into precise packaging parameters, serving as a mediator that ensures accuracy without requiring the operator to have extensive experience

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This approach reduces film consumption, enhances packaging quality, and simplifies operator input, ensuring accurate and efficient packaging even for inexperienced users, while minimizing idle time and costs.

Implementation Method 1

In a cap shrinking mode of operation, after the film is pulled over the article being packaged, the film is shrunken by heat-shrinkage

Methodology Applied
Scientific EffectHeat-shrinkage: Thermal Contraction

Implementation Method 2

In a cap stretching mode of operation, the film is elastically stretched and is drawn over the article being packaged

Methodology Applied
Scientific EffectElastic stretching: Elasticity

Data Source

PatentUS10421570B2Method for packaging of an article of merchandise
Publication Date: 2019.09.24 SIGNODE IND GROUP LLC
  • US10421570B2 patent drawing
  • US10421570B2 patent drawing

AI summary

The present disclosure provides a method for packaging an article of merchandise with a film material using a packaging apparatus. The film is a side-pleated tubular film roll. An input device receives the sole film packaging parameters of the thickness of the film, the width of the film, and the distance between a first side fold and a second side fold of the film. Based on these three film packaging parameters, a controller determines a specified length of the tubular film for packaging the article, and the packaging apparatus cuts off a segment of the tubular film having that specified length. The packaging apparatus then draws the segment of tubular film over the article being packaged.