Wound Packaging Material Control Using Remaining Amount Data

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Solution Overview

Problem

Conventional packaging devices require setting the rotation speed of the wound body to a minimum speed to prevent material depletion, leading to prolonged initial operations and replacements, thus increasing the time required for starting packaging.

Innovation Solution

A packaging device equipped with a recording medium storing remaining amount information, a drive unit, an information reader, and a controller to set rotation speed based on the recorded information, along with a tension applying unit and position detectors to manage the packaging material's unwinding and winding efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the rotation speed of the wound body is set to minimum speed to prevent material depletion, then reliability of material supply is improved, but the time required for initial operation and replacement increases

Engineering Contradiction:

Improvereliability of material supplyVSAvoidtime required for initial operation and replacement

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The remaining amount information is recorded in advance on the wound body itself, allowing the system to know the material quantity before operation starts. This eliminates the need for slow minimum-speed operation to determine remaining amount, as the information is already available from the recording medium.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical method of determining remaining amount (slow minimum-speed unwinding operation) with an information-based method (reading data from recording medium). This substitution of mechanical measurement with information retrieval dramatically reduces the time required while maintaining reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If the rotation speed is increased to reduce initial operation time, then productivity is improved, but the risk of step out and material depletion increases

Engineering Contradiction:

Improvespeed of packaging operationVSAvoidrisk of step out and material depletion

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The controller continuously monitors the remaining amount information from the recording medium and adjusts the rotation speed accordingly. When the remaining amount is sufficient, higher speeds are permitted for improved productivity. When the remaining amount decreases, the controller reduces speed to prevent step out, thus maintaining reliability while optimizing productivity.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The rotation speed is made dynamic rather than fixed at minimum value. The speed varies based on the remaining amount information read from the recording medium, allowing the system to operate at high speeds when material is abundant and reduce speed when material is running low, thus resolving the contradiction between productivity and reliability.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If minimum speed operation is performed to determine remaining amount, then accuracy of remaining amount determination is improved, but the time required for operation increases

Engineering Contradiction:

Improveaccuracy of remaining amount determinationVSAvoidtime required for determination operation

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces mechanical measurement (slow unwinding operation to count layers) with information retrieval (reading remaining amount data from recording medium). This substitution maintains the accuracy of remaining amount determination while eliminating the time-consuming mechanical operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The remaining amount information is copied onto the wound body in advance during manufacturing. This copy of the information allows the system to know the remaining amount instantly without performing slow measurement operations, thus maintaining measurement precision while dramatically reducing determination time.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS12595086B2Packaging device, wound body, core tube, method for manufacturing wound body, and wound material

Publication Date: 2026.04.07 TAKAZONO CORP

AI summary

Time required for initial operation and operation immediately after wound body replacement is shortened. A packaging device packages an object to be packaged using a wound body. An elongated sheet-shaped packaging material is wound into the wound body. The wound body includes a recording medium that stores information. The information recorded in the recording medium includes remaining amount information indicating a remaining amount of the packaging material in the wound body. The packaging device includes a drive unit that generates driving force in order to rotate the wound body, an information reader that reads the remaining amount information stored in the recording medium, and a controller that controls the packaging device. The controller sets a rotation speed of the wound body based on the remaining amount information read by the information reader.