Slitter Rewinder Machines
Thin materials such as paper, vinyl, films, and foils are typically sold in unwieldy rolls of continuous material. Before they can use these materials, manufacturers must have a reliable method of slitting material down to a usable size.
Companies in the converting, packaging, and similar industries rely on slitter rewinders to rapidly process wound material into smaller rolls of their desired dimensions. Jennerjahn’s slitter rewinder machines facilitate this task, leveraging advanced technology to increase efficiency and minimize downtime.
What are Slitter Rewinder Machines?
Slitter rewinder machines perform three primary functions to convert a single large roll into multiple smaller ones. They first unroll the master roll, then slit the unwound material into strips of the desired dimensions. Afterward, they rewind the newly-cut material onto new cores for distribution or use in manufacturing.
Although slitter rewinding machines are commonly associated with paper products and films, they can be used to convert almost any very thin material, including a range of polymers, fabrics, and foils.
About Jennerjahn Machine
“Since 1979, Jennerjahn Machine has been a global leader in the converting industry and continues to be a progressive, international company committed to providing the most efficient solutions for the changing needs of their customers.”
How Do Slitter Rewinding Machines Work?
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Rolls loaded into a slitter rewinding machine go through programmed stages that convert the roll into smaller, narrower rolls. The master rolls enter a staging area before being loaded. Once loaded in the rewinding station, the machine cuts through the core’s tails and tucks them into the core before unwinding and slitting the roll. Finally, the machine rewinds the rolls, seals the tails, and transfers the finished products to an exit conveyor.
Although all slitter rewinding machines perform the same general functions of unwinding, slitting, and rewinding, they use different techniques to slit the material. Razor blade cutting is the most economical, drawing the material against a fixed razor blade to slit cleanly through paper and film. However, razor blade cutting cannot be used with heavy or abrasive materials, and it may cause polymers to bend as the blade heats up.
A more versatile option is shear cutting, which is more accurate and can accommodate tougher, thicker materials. This technique uses rotating blades that slit from above and below to create a smoother cut through heavy materials.
Some machines use score cutting, especially older machines or machines used for adhesives. This technique involves cutting a film between a dull blade and a hard table. Although fast and affordable, it can cause quality problems such as cracking and stretching.
Another distinction between rewinding machines is the level of automation. Automation allows users to obtain unmatched uniformity and precision, while interchangeable blades and dynamic blade spacing accommodate specialized designs. Some slitter rewinders are fully automated from feeding through unloading, requiring minimal intervention from an operator. Others are only semi-automated, although these machines still offer substantial time savings and accuracy improvements compared to manual models.
Jennerjahn Slitter Rewinder Machines
Jennerjahn supplies a range of slitter rewinder machines to suit any industrial application. Our machines include:
- JLS 73 & 84: Jennerjahn Large Slitter for 73" and 84" Products: The standard Jennerjahn Large Slitter facilitates high-volume processing of a wide range of rolled materials. These models feature automated feeding, cutting, winding, and exit transfer, so the operator only needs to load cores onto the staging table or core hopper. The use of automation coupled with maximum web speeds of 2300 fpm (700 mpm) make the JLS 73 and 84 models exceedingly efficient for high-volume processing of webs up to 73" or 84" in width.
- JLS 120: Jennerjahn Large Slitter for 120" Products: The JLS 120 features the same high-volume, semi-automated processing as the JLS 73 and 84 models, but it accommodates larger web widths up to 120". The JLS 120 is an ideal choice for construction-grade material rolls including housewrap and roofing materials.
- JLS 135 & 150: Jennerjahn Large Slitter for 135" and 150" Products: The JLS 135 and 150 models can handle unwind rolls reaching 5,000 lbs and 150" in width, offering efficient handling for large rolls of material. With these models, master rolls can be split into rolls anywhere from 2.5" to 12" in diameter to help users achieve their exact converting goals.
- JJF: Jennerjahn Fully-Automatic Surface Rewinder: The versatile Jennerjahn Fully-Automatic Surface Rewinder automates the entire rewinding and slitting process from beginning to end. Advanced features include automatic speed calculations, feeding, and core alignment, as well as tail tucking, material slitting, and core rewinding. The result is the most efficient rewinding and converting possible for cores ranging in size from 1.5" to 12" and for webs up to 54" in width. This model is useful wherever full automation is required, including for receipts, lottery tickets, airline boarding passes, and similar applications.
- JJS: Jennerjahn Semi-Automatic Surface Rewinder: The Jennerjahn Semi-Automatic Surface Rewinder automates the majority of the material converting process, requiring only that an operator stage mandrels in the autoloading mechanism. Afterward, the machine's automatic mandrel insertion, tail cutting, gluing, and removal systems manage the entire surface rewinding process.
- JJM: Jennerjahn Manual Surface Rewinder: The Jennerjahn Manual Surface Rewinder, despite lacking the automation features of the JJS or JJF, is extremely easy to set up and operate, and can achieve web speeds of 1800 fpm (548 mpm) for efficient production. Automatic tail cutting and gluing speed the manual operation process, increasing processing speeds and reducing labor costs vs. standard manual rewinders.
- DJJF: Dual Jennerjahn Fully-Automatic Surface Rewinder: Incorporating two rewinders rather than the standard one, the Dual Jennerjahn Fully-Automatic model is used for the highest volume applications. In this machine, a single core hopper and core orientation system feeds two rewinders for maximum single-ply web speeds of 2300 fpm (700 mpm) at widths up to 54". The core diverter monitors both rewinders simultaneously, and an automated roll removal system merges all products onto a single exit conveyor. For clients with high-volume converting needs, there is no more efficient machine than the DJJF.
- CJLS 73: Coreless Jennerjahn Large Slitter for 73" Products: The CJLS 73 coreless winding machine is designed for coreless POS rolls. Eliminating the core further increases profit margins for rewind shafts ranging from 1.5" (38mm) to 3" (76mm) in diameter. The fully automatic CJLS 73 works at speeds reaching 2300 fpm (700 mpm)
- JTS-2: Jennerjahn Turret Slitter - 2 Shaft: The Jennerjahn Turret Slitter is the ideal system for clients seeking a fully automated solution for delicate or low-tension webs. The JTS-2 features an advanced tension control system for superior lane control in multiple slit production, while also minimizing the possibility of surface scratching. This system is ideal for substrates such as tinted films, photo papers, pressure-sensitive vinyl, and similar materials.
- JTS-4: Jennerjahn Turret Slitter - 4 Shaft: Like the JTS-2, the JTS-4 is a fully automated, high-volume turret system ideal for webs with sensitive surfaces. The JTS-4 incorporates four turrets rather than two to improve cycle times for high-volume, multiple-slit production requirements. JTS-2 and JTS-4 models are typically used with rewind shafts ranging from 2.0" (50mm) to 3" (76mm) in diameter, although custom sizes are also available.
Packaging Automation
In addition to rewinding machines, Jennerjahn also offers a line of automation solutions that work in conjunction with rewinders to expedite the converting and manufacturing processes. These include:
The Jennerjahn Case Packer packages products like POS receipt rolls into boxes, and can integrate with sleeve wrappers to pack either individual rolls or roll packs.
Jennerjahn offers automated box forming solutions for regular slotted containers as well as custom die-cut boxes. Also available are robotic and push-bar automation devices for efficient box loading.
Source Your Slitter Rewinders from Jennerjahn Machine
Jennerjahn Machine has spent over 40 years serving international clients with standard and custom converting solutions. Our customizable, high-performance slitter rewinders are 100% American-made and guaranteed to meet your strictest quality standards. To learn more, contact our team today.
