ROTOCON NSU-V 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.

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

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Features

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Available in web widths: 350, 450, 550 mm

Segmental coupling tension control

Diagonal butt splice — continuous production without reducing machine speed

Servo-controlled for 100% successful butt splicing

Tape application to the front and back sides

A set of maintenance-free storage racks

Independent A/B-axis web guide control

Convenient material placement system

Automatic roll sidelay for use with opaque and transparent materials

Tail-grabbing function for maximum material usage and minimum waste

Pneumatic lift loading, operated by one person without any tools

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Details

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

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Specifications

Model:
NSU-350/450/550
Maximum Unwinding Diameter:
800 / 1,000 / 1,000 mm (31.50 / 39.37 / 39.37")
Max. Web Width:
350 / 450 / 550 mm (13.78 / 17.72 / 21.65")
Max. Machine Speed:
180 m/min (591 fpm)
Max. Splicing Speed:
150 m/min (492 fpm)
Material Splicing Time:
2 sec
Splicing Method:
Oblique splicing
Splicing Angle:
10°
Material Range (Standard):
Paper 60–400 gsm · Plastic film >25 μm · ABL/BPL tube laminated
Secondary Tension Control:
Digital — also enables unsupported film, paperboard and ABL/PBL tube laminates (optional)
Edge Position Control:
Terminal EPC
Material Pick-up Alignment:
Laser positioning
Dimensions:
L2,950 × W1,550 × H2,450 mm (L116.14" × W61.02" × H96.46")
Machine Weight:
About 2,200 kg (4,850 lb)
Total Power:
6 kW – 11 kW
Voltage:
380 V, 50 Hz, 3-phase
Note:
Material samples outside these ranges should be sent to ROTOCON for testing prior to order placement
ROTOCON team reviewing production at the manufacturing facility
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About Rotocon
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Frequently asked Questions

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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 powered by a multi-servo drive system for precise control of the impression and anilox rollers, using premium Baumüller or Yaskawa systems. The repeat range spans from 254 to 635 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 80 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:

•Multi-servo drive system per print unit (precise control of the impression and anilox rollers)

•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.

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