Idler roller and corresponding pallet wrapping machine

The modified idle roller with a load cell and deformable sensor in pallet wrapping machines maintains consistent film tension, addressing inefficiencies and mechanical failures for irregular loads.

EP4722110A1Pending Publication Date: 2026-04-08C&C GROUP SRL
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Patent Information

Application Number
EP2025207104
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-10-07
Filing Date
2025-10-07
Publication Date
2026-04-08

AI Technical Summary

Technical Problem

Existing pallet wrapping machines face challenges in maintaining consistent film tension during packaging due to non-circular pallet shapes and irregular loads, leading to inefficiencies, material wastage, and mechanical failures.

Method used

A structurally modified idle roller with a load cell positioned between a cylindrical body and a fixed support, incorporating a deformable element and sensor to detect pressure differences, allowing for precise tension adjustment without moving components.

Benefits of technology

Ensures consistent film tension for uniform wrapping, supports irregular loads, reduces mechanical complexity, and minimizes maintenance needs.

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Abstract

An idle roller for pallet wrapping machine comprises a hollow cylindrical body (10) configured to rotate around an axis (12) and a load cell (20) provided with at least one rigid element (25) and at least one deformable element (26), a fixed support (14) coaxial to the cylindrical body (10) and integral with the structure of a carriage configured to support at least one roll of plastic film, connecting means (16) between the cylindrical body (10) and the load cell (20), the load cell (20) being interposed between the cylindrical body (10) and the support (14) and being configured to detect the pressure difference exerted by the plastic film on the cylindrical body (10) and on the support (14).
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Citation Information

Patent Citations

  • Webtension transducer load cell with integrated data interface

    US20220002107A1

  • Full-automatic mobile phone film pasting device and film pasting method thereof

    CN108688866A

  • Device for unwinding stretchable plastic film

    EP1213223A1

  • Method and machine for wrapping a load with film

    US11345493B2

  • Wrapping machine

    US20200231313A1