Sheet Coil Packaging with Heated End Attachment

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Solution Overview

Problem

Existing sheet coil packaging systems face issues with partial unwrapping of wrapping material due to the self-adhesive properties of plastic stretch film, leading to incomplete protection during transportation.

Innovation Solution

An end attachment tool with a heating arrangement is coupled to a robot arm to securely attach the end of the wrapping material to the sheet coil by heating it, using a grabbing and cutting mechanism to maintain tension and ensure complete wrapping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the wrapping material is left to tack to the wrapping by self-adhesive properties, then the attachment process is simple, but the wrapping may partially unwrap during transportation

Engineering Contradiction:
Improveattachment process simplicityVSAvoidwrapping security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent applies thermal energy to change the physical state of the wrapping material end, heating it to a temperature where it becomes adhesive and bonds to the coil. This parameter change (from ambient temperature to heated temperature) transforms the wrapping material's properties to achieve secure attachment while maintaining operational simplicity through automated heating

Inventive Principle:
Principle #35Parameter changes

2Reliability

If a heating arrangement is used to attach the wrapping material, then the wrapping security is improved, but the device complexity increases

Engineering Contradiction:
Improvewrapping securityVSAvoidattachment tool complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the heating arrangement with the existing end attachment tool that is already integrated into the robotic wrapping system. The heating element is combined with the tool that positions and applies the wrapping material, creating a multi-functional device that secures wrapping reliability without requiring separate standalone heating equipment

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The heating arrangement is designed to automatically heat the wrapping material end as it is being applied to the coil, with the system self-regulating the heating process through integrated sensors and control mechanisms that monitor temperature and activation timing

Inventive Principle:
Principle #25Self-service

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 system provides a simple and effective method to securely attach the wrapping material to the sheet coil, preventing partial unwrapping during transportation and ensuring complete protection.

Implementation Method 1

a heating arrangement, arranged to attach wrapping material from the roll of wrapping material to wrapping on a sheet coil by heating the wrapping material

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentUS12371208B2Sheet coil packaging with end attachment
Publication Date: 2025.07.29 LAMIFLEX GRP AB
  • US12371208B2 patent drawing
  • US12371208B2 patent drawing
  • US12371208B2 patent drawing

AI summary

A system for sheet coil packaging using a roll of wrapping material is provided, including: a sheet coil rotating arrangement; a wrapping tool; an end attachment tool, including a heating arrangement; and first and second industrial robots. The first and second industrial robots have first and second robot arms arranged to: wrap the sheet coil using sequences of the first robot arm inserting the wrapping tool into a central hole of the sheet coil and handing over the wrapping tool to the second robot arm, and the second robot arm transporting the wrapping tool along the outside of the sheet coil and handing it back to the first robot arm; and attach wrapping material from the roll of wrapping material to the wrapping on the sheet coil by heating the wrapping material using the heating arrangement, by the first robot arm moving the end attachment tool so that the heating arrangement becomes positioned to heat the wrapping material.