ROTOCON NSU Automatic Butt Splice Unwinder

Automatic butt-splice unwinding for label converting and narrow-web applications, utilising segmental coupling tension control, available in web widths of 350, 450, and 550 mm.

NSU Nonstop neu 01 webquality
Go back
Explore Details

Automatic splicing for label converting and narrow-web applications — significantly increased productivity, greater quality control and reduced waste. The NSU Butt Splice Unwinder uses a diagonal butt splice on a two-position cantilevered unwind with lift-and-load, keeping the line running.

View Partner
Contact Support
No items found.

Features

Watch product video
NSU Nonstop neu 01 webquality

Available in web widths: 350, 450, 550 mm

Segmental coupling tension control

Diagonal butt splice — continuous production without reducing machine speed

Request Product
Contact Support

Details

Discover detailed information, technical specifications, and key performance facts for each individual machine right here.

View Brochure

Specifications

Model
NSU-350/450/550
Maximum Unwinding Diameter
800 / 1000 / 1000 mm
Maximum Web Width
350 / 450 / 550 mm
Maximum Machine Speed
180 m/min
Maximum Splicing Speed
150 m/min
Unwinding Connect Material Time
2 sec
Mode of Connect Material
Oblique Connect
Material Range (Standard)
60–250 gsm paper / PS labels · 40–400 gsm unsupported film / paperboard
Angle of Material Connect
10°
Edge Position Control
Digital Terminal EPC
Pick-up Material Alignment
Laser Positioning
Dimensions
L2950 × W1550 × H2450 mm
Machine Weight
About 2200 kg
Total Power
6 kW
Voltage
380 V, 50 Hz, 3 Phase
Three men in a manufacturing facility discussing metal parts, one holding a component and another examining a drawing.

A customer success story

No items found.
Button Text
Button Text

THe impact in numbers

Read the full story

Download Story

Looking to invest in a high-quality print machine?

Contact us today for a personalized consultation, and let us guide you through the best options to meet your needs.

Contact us
About Rotocon
Confident man with short dark hair and beard wearing a blue blazer and light blue shirt against a white background.

Frequently asked Questions

Ask our Experts

ROTOCON’s flexographic printing presses offer web widths of 350 mm, 450 mm, 530 mm, and up to 660 mm. Speeds reach up to 200 m/min depending on the model. Each print unit is driven by dual independent servo motors (sleeve and impression) using premium Baumüller or Yaskawa systems. The repeat range spans from 254 to 609.6 mm. ROTOCON’s hybrid and digital solutions (e.g. RDF series) offer semi-rotary and full-rotary finishing with inline embellishment, achieving speeds up to 120 m/min and precision levels of ±0.15 mm.

ROTOCON’s flexographic presses are engineered for long-run, multi-colour applications, delivering high production speeds and low per-unit costs. With capabilities reaching up to 200 m/min and advanced servo-driven architecture, these presses ensure precise registration, consistent print quality, and reliable high-throughput performance.

Specialised configurations are available to support complex label production, including delam/relam units and cross-over systems for multilayer label applications. These options provide the flexibility to handle sophisticated constructions while maintaining the accuracy required for consistent, high-quality output.

Designed with productivity in mind, ROTOCON presses integrate automation solutions and value-adding modules that can be seamlessly activated at the touch of a button. This enhances operational efficiency, reduces setup time and waste, and enables converters to respond quickly to evolving market demands.

Purchasing pre-owned equipment from ROTOCON provides a cost-effective and practical solution when new machines are beyond your current budget. Through our global sourcing network, we provide well-maintained presses that are refurbished, inspected, and ready for production. ROTOCON handles sourcing, shipping, installation, training, and ongoing support, giving you a single point of accountability. Pre-owned machines come with warranty options, access to parts, and potential upgrades, ensuring reliable performance while reducing upfront costs and supporting sustainable practices.

ROTOCON sources pre-owned equipment through trusted global networks and conducts full inspections via OEM-certified technicians. Machines are evaluated and, if required, upgraded with refurbishment kits. All systems are tested for mechanical, electrical, and print accuracy before delivery. Our turnkey service includes logistics, installation, and training to ensure refurbished systems perform to original specifications.

Installation is managed as a turnkey project by ROTOCON’s technical team. Requirements typically include standard industrial floor space, stable power supply, compressed air, and web-path alignment. Most installations are completed within a few days to two weeks, depending on system complexity. Setup includes machine commissioning, operator training, and performance testing.

ROTOCON machines integrate advanced automation such as:

•Dual servo motors per print unit (sleeve & impression)

•Web guiding and tension control systems

•Smart job memory and automated register settings

•Inline inspection

•Non-stop rewinders and automatic splicing

•Modular embellishment units for hot/cold foil, screen, embossing, lamination, and UV/IR curing

These automation features reduce waste, speed up job changeovers, and improve overall process reliability.

Yes. ROTOCON offers fully customised solutions tailored to your specific application needs—whether it’s label production, flexible packaging, or speciality coatings. Machines can be configured with various web widths, print units, embellishment modules, drying systems, and inline converting options. Our technical team collaborates closely with customers to design press lines that match production goals, substrates, and finishing requirements. We also offer hybrid systems that combine flexo and digital capabilities for ultimate flexibility.

ROTOCON maintains a strong inventory of critical spare parts and works directly with OEM partners to ensure quick access to components. Our service network provides responsive technical support, both remotely and onsite. Preventive maintenance programs, operator training, and machine audits are also available to keep your equipment running at peak performance. For refurbished equipment, ROTOCON recommends pre-selected upgrade kits and provides long-term parts sourcing support to maximize uptime and reliability.

Further questions?