Do you know that the slitter rewinder is an essential machine
in the converting industry? Its strategic design facilitates the efficient slitting and rewinding of large rolls of
material, enabling their transformation into smaller and more specific sizes rolls. These machines assume a key role
in various sectors such as packaging, printing, converting, and material processing. The purpose of this guide is to
provide you with a thorough understanding of slitter rewinders, empowering you to make informed decisions when it
comes to investing in or operating them.
Within this guide, we will address 5 core aspects of slitter
rewinders, encompassing their types, components, applications, maintenance, and purchasing essentials. By
acquainting yourself with these fundamental subjects, you will be better prepared to tackle the intricacies of
slitter rewinders and enhance their performance in your production processes. Regardless of your experience level in
the industry, this guide will serve as an invaluable resource for deepening your comprehension of slitter rewinders
and their indispensable function within your business operations.
1. Types of Slitter Rewinders
There are several types of slitter rewinders, each designed to handle specific materials and applications. The most
common types include:
Duplex Slitter Rewinder
The Duplex Slitter Rewinder features dual rewind shafts and is characterized by its ability to
simultaneously process multiple rolls on two rewind shafts. This rewind method can be further identified as Duplex Center Winding and Duplex Surface Winding.
Tension control in duplex winding slitter rewinders is typically achieved through individual tension control
systems for each rewind shaft. This enables precise and independent adjustment of tension on each shaft to
maintain consistent tension throughout the rewinding process.
Surface Winding Slitter Rewinder
While the Surface Winding method is applicable to duplex shaft winding, it is primarily utilized for
rewinding materials onto a single rewind shaft. This configuration is particularly suitable for handling small rolls with rapid production turns, as well
as large-scale rolls like papers and nonwovens . The
method offers notable advantages in terms of roll stability and alignment, ensuring high-quality rewound
Turret Slitter Rewinder
The Turret Slitter Rewinder is renowned for its innovative turret design,enabling seamless and rapid
changeover between various slitting modes. A notable characteristic of a slitter equipped with turret
winding is its system comprising multiple winding shafts situated on a rotating turret, allowing for
uninterrupted operation. While one shaft actively winds the material, the remaining shafts can be prepared
for the subsequent roll. This simultaneous operation substantially decreases downtime, enhances
productivity, and optimizes the utilization of the slitter.
Two Drum Slitter Rewinder
The two-drum slitter rewinder typically refers to a configuration where the slitting and rewinding process
is carried out using two driven drums for surface winding. In this setup, the material is fed through the
slitting section and then wound onto the two parallel drums, creating a tightly wound roll. The driven drums
provide the necessary tension and control to ensure proper winding of the material.
One of the key advantages of the two-drum slitter rewinder is its ability to enable high-speed operation.
The driven drums facilitate efficient and precise winding of the material, allowing for increased production
Individual Arm Slitter Rewinder
The Individual Arm Slitter Rewinder, also referred to as a Primary Slitter Rewinder, is a specialized
machine used for the initial slitting and rewinding of mother rolls. This type of slitter rewinder is
commonly employed in the film production industry. One notable feature is individual winders, which are
positioned on a linear rail. This arrangement allows for easy adjustment based on the specific slitting
specifications required. Each individual winder has its own rewind motor, enabling precise tension control
for each rewinding operation. In cases where a full-width winding is necessary, a combination of motors can
be utilized to handle the heavy-duty operation.
Narrow Web Slitter Rewinder
The narrow web slitter rewinder is a compact and space-efficient machine designed to handle narrow-width
materials. One of its standout features is its doctoring capability, allowing for the reprocessing of
unqualified rolls and effectively eliminating imperfections in the material. Additionally, narrow web
slitter rewinders are user-friendly, thanks to the cantilevered unwind and rewind shafts that enable easy
loading and unloading.
Spooling Slitter Rewinder
Spooling Slitter Rewinders are commonly used to handle adhesive or non-adhesive materials with small
slitting widths, while requiring long running length accumulation. Typically, these spooling winders have a
modular design that allows for future expansion by adding an unlimited number of spooling heads. Each
spooling head is equipped with its own drive and tension control, providing the flexibility to modify the
spooling geometry based on specific needs, such as traverse, taper, step, and flanged winding.
2. Key Components of Slitter Rewinder
A typical slitter rewinder consists of several key components :
Housing the cutting mechanism, this section performs the actual slitting of the material. It typically
features adjustable slitting blades or circular knives mounted on slitting shafts or arbors. Additional
cutting options, such as shear cutters, crush cutters, or razor slitting, may be included for specific
Comprising motors, gearboxes, and drive shafts, the drive system provides the power and control necessary
for the Slitter Rewinder's operation. It drives the unwind and rewind sections, as well as the slitting
mechanism, enabling synchronized and precise movement of the material during the cutting and rewinding
The control panel allows operators to monitor and adjust various parameters, such as tension control,
cutting width, speed, and other settings. It may include a touchscreen or a control console with buttons,
switches, and digital displays for easy operation and real-time monitoring.
To ensure operator safety and prevent accidents, Slitter Rewinders are equipped with features such as
emergency stop buttons, safety interlocks, safety guards, and sensors that detect abnormalities or material
jams, automatically stopping the machine to prevent damage or injury.
Depending on specific requirements, Slitter Rewinders can be equipped with additional features like
automatic core loading/unloading systems, web guiding systems, integrated quality inspection systems, auto
knife placement, auto
system, auto winder positioning and web cleaning devices, among others, to enhance productivity,
accuracy, and overall workflow optimization.
These components work harmoniously to enable efficient material processing, precise cutting, and rewinding
operations in a slitter rewinder machine.
Part 1 of "5 Basic Guides of Slitter Rewinders" has provided a solid foundation for understanding these versatile
machines. We explored the various Types of Slitter Rewinders and examined their Key Components, equipping you with
essential knowledge to embark on your journey into the world of slitting and rewinding. Now, let's move on to Part
2, where we will delve even deeper and share additional valuable insights. 5 Basic Guides of
Slitter Rewinders(Part 2)