Film-Sealing Assembly for Faster Stretch-Wrapping Tail Securing

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Solution Overview

Problem

Existing stretch-wrapping machines face challenges in simplifying and speeding up the process of securing the film tail to the wrapped load, which affects throughput.

Innovation Solution

A stretch-wrapping machine with a sealing and cutting device that includes a heating element assembly and a clamp, allowing for the secure sealing and cutting of film layers, integrated with a guide and actuator system to facilitate efficient film wrapping and tail management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing mechanisms for securing the film tail are used, then the film can be secured to the wrapped load, but the process is complex and slow, reducing throughput

Engineering Contradiction:

ImprovethroughputVSAvoidsecuring process complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent combines the sealing and cutting functions into a single integrated device that operates in one positioning action. The heating element assembly seals the film tail to the wrapped load while the clamp simultaneously cuts the film, eliminating the need for separate securing operations and reducing process complexity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The heating element assembly and clamp work together in a self-contained manner where the heating element seals the film to itself and the load, and the clamp automatically positions and executes the cutting action without requiring additional external mechanisms or manual intervention

Inventive Principle:

Principle #25Self-service

2Productivity

If existing film tail securing mechanisms are used, then the film can be secured, but the process takes too much time, affecting throughput

Engineering Contradiction:

ImprovethroughputVSAvoidfilm tail securing time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The clamp is positioned and ready to cut the film while the heating element is already in place to seal the film tail. Both actions are prepared in advance and execute simultaneously in one operation, eliminating sequential delays and reducing the time required for film tail securing

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The sealing and cutting operations are merged into a single integrated device that performs both functions simultaneously at the same positioning location, eliminating the time required to move between separate sealing and cutting stations

Inventive Principle:

Principle #5Merging (Combining)

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

Enhances the efficiency of the film-sealing process, improving throughput by simplifying the film tail securing process and ensuring seamless film wrapping.

Implementation Method 1

a heating element positioned between the heating element support and the heating element guard and movable between a sealing position and a home position to seal two layers of film together

Methodology Applied

Scientific EffectHeating: Heating

Data Source

PatentEP4507972B1Stretch-wrapping machine with film-sealing assembly

Publication Date: 2026.04.15 SIGNODE IND GROUP LLC

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AI summary

Various embodiments provide a stretch-wrapping machine with a sealing-and-cutting device that performs seaming to seal the film after the load is wrapped.