Originally featured in Plastics Technology, Kelly Chalmers’ cover article, Automation in Motion: Rethinking Roll Handling for Flexible Film Processors, explores how Applied Manufacturing Technologies (AMT) is helping film processors address the challenges of roll handling through automation, from moving jumbo rolls to managing finished rolls and preparing them for downstream processing.
In the world of flexible packaging, many film processors have invested heavily in extrusion lines and slitting systems to increase throughput and product consistency. Yet a persistent bottleneck remains: handling the massive, unwieldy rolls of film that move between production steps. These rolls vary widely in size and format, and automating their handling presents both a technical challenge and a strategic opportunity.
When people in the plastics industry hear “automation,” they often think of robots unloading parts from injection molding machines. In film processing, automation takes a different form; it may involve transporting a 300-pound roll from a slitter to a storage area, or safely staging multiple finished rolls for inspection, wrapping, or shipping. These tasks remain labor intensive in many plants, and the opportunity to improve efficiency, safety, and data visibility is significant.
Inside the Slitter/Rewinder Workflow
In a typical flexible film processing facility, large bulk rolls (sometimes called jumbo rolls) are the output of an upstream process such as extrusion, printing, or lamination. These jumbo rolls are loaded into a slitter, which cuts them into narrower, shorter lengths suitable for final packaging. A rewinder then creates multiple saleable rolls from the original jumbo roll.
Automation can make a significant impact in handling finished rolls, which may range from 10 to 300 pounds. Their outer diameters, widths, and core sizes can vary significantly. Some may even be coreless. The slitter may produce one roll or 20 simultaneously, and to maintain line efficiency, those rolls need to be cleared rapidly to make way for the next cycle. Delays here can reduce uptime on expensive, high-speed slitters.
The Complexity of Handling Film Rolls
Flexible film operations require automation systems that can manage a broad spectrum of product configurations. A single machine may be called upon to handle a wide range of SKUs, roll sizes, and packaging formats. Designing automation to support this variability is a complex engineering challenge. Lightweight rolls can often be managed by compact robotic systems, while heavier rolls, sometimes exceeding several hundred pounds, may require the use of gantries, lifts, or custom handling solutions with very different mechanical and spatial requirements. These variations influence everything from payload capacity and speed to reach, footprint, and integration strategy.
At the same time, automation does not eliminate the need for human interaction. Operators must still be involved during material faults, maintenance tasks, or quality checks. Systems must be designed with safe and efficient manual accessibility in mind. For example, suspending a roll overhead with a gantry may improve throughput, but it introduces new risks if operators must intervene mid-process. The type of automation selected must align not only with product variability, but also with how much human oversight the process still requires.
Opportunities in Transport and Transfer
Moving jumbo rolls to the slitter remains one of the most labor-intensive steps in roll handling, due to their size, weight, and awkward geometry. Operators have traditionally used carts, hoists, or lift-assist devices: tools that are often slow and ergonomically demanding. Newer solutions, such as autonomous mobile robots (AMRs), are beginning to streamline this process and reduce operator strain.
Unlike traditional AGVs, autonomous mobile robots (AMRs) can adjust routes in real time, navigate complex environments, and avoid obstacles, a capability known as dynamic motion planning. This makes them especially valuable in production areas with high foot traffic or narrow pathways. With AMRs, film processors can reduce reliance on carts and hoists while improving throughput and worker safety.
Downstream Integration and Inspection
Beyond the slitter, automation can also support the steps required to prepare rolls for shipment or downstream processing. These include labeling, palletizing, stretch-wrapping, and bagging, each of which presents an opportunity for integrated automation.
Inspection can be automated as well, using vision systems or sensors to verify proper winding, label placement, or surface integrity in real time. Incorporating these checks into the workflow reduces reliance on manual review and helps ensure more consistent product quality.
Designing for Flexibility and Institutional Knowledge
Successful automation design demands a working knowledge of day-to-day operations on the plant floor. Operators often develop informal routines or adjustments that aren't captured in process documentation, yet play a critical role in keeping production running smoothly.
Capturing these undocumented practices during the system discovery phase ensures that automation systems can either replicate them or safely eliminate the need. For instance, something as simple as applying extra tape to secure a roll may seem inconsequential, but it could be essential for protecting product during handling. Engaging floor personnel throughout the design phase helps identify these operational details and avoids costly oversights once the system is live.
Looking Ahead
Slitter technology is advancing, particularly in the rewinder area. For example, turret rewinders allow machines to continue operating while finished rolls are automatically changed out, minimizing downtime. This increases throughput but also places new demands on downstream automation, which must keep pace by quickly clearing completed rolls and preparing for the next cycle without delays.
To match these performance improvements, roll handling must evolve as well, not only for product transportation, but also for roll staging, orientation, inspection, and preparation for shipping or further processing. Automation that supports this full scope (roll variability, manual backup needs, and integration with existing workflows) can help processors reduce manual intervention, minimize errors, and increase consistency across a wide range of SKUs and roll formats.
As automation systems become more capable, integrating advanced motion control, safety, and inline inspection, roll handling is becoming increasingly compatible with automation. Film processors that proactively modernize these systems can turn a traditional bottleneck into a highly efficient process. Partnering with a system integrator experienced in roll-based automation can help film processors modernize operations while ensuring compatibility with both legacy equipment and evolving production demands.
Kelly Chalmers is a Senior Program Manager at Applied Manufacturing Technologies, where she has specialized in flexible automation and roll handling systems for over two decades. With experience in engineering design, simulation, and systems integration, she has led complex automation projects across a variety of manufacturing environments. Kelly holds a B.S.E. in Industrial and Operations Engineering from the University of Michigan and an MBA from Kettering University.
