Rewinding Machine

Product Overview

The Industrial Slitter Rewinder processes continuous web materials from master rolls into finished, precisely dimensioned rolls. Engineered for high-speed converting lines, this machine integrates closed-loop web tension management, automated edge guiding (EPC), and shear or razor slitting modules. It accommodates web widths from 1,300 mm to 2,500 mm and operates at mechanical speeds up to 600 m/min. Built on a stress-relieved, heavy-gauge steel frame, it minimizes structural vibration during high-acceleration cycles.

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Working Principle & Production Process

Stretch Film Cling Film Rewinding Machine

Unwinding Phase

The mill roll mounts on a shaftless or shafted pneumatic unwinder. A pneumatic brake or AC vector motor applies continuous feedback-driven retardation to maintain baseline web tension.

Cling Film Aluminum Foil Rewinder Machine

Web Guidance (EPC)

The moving web passes through an infrared or ultrasonic edge-position control sensor. A linear actuator corrects lateral web drift before it reaches the slitting station.

Slitting Station

The material passes through a synchronized array of rotary shear knives, razor blades, or crush cutters, dividing the master web into narrow ribbons.

Gift Paper Aluminum Foil Rewinder Machinery

Rewinding Phase

Slit webs route through surface-contact or centerline-driven differential rewind shafts. Individual slip rings on the rewind shaft compensate for thickness variations across the master roll, ensuring uniform roll density without telescoping.

Key Features

Closed-Loop Tension Control

Load cells continuously monitor web tension, adjusting servo drives instantly to prevent material elongation or deformation.

Differential Rewind Shafts

Pneumatically expanded friction rings compensate for gauge band variations, eliminating loose or tight wraps across multi-slit rolls.

Automated Laser Core Positioning

Laser pointers project exact core locations onto the rewind shaft, cutting setup time by 40% between job batches.

Integrated Trim Exhaust

Blower-driven vacuum suction continuously removes edge trim waste into a compact collection bin.

Pneumatic Shaftless Unwinder

Hydraulic arms lift master rolls directly from the floor, removing the need for overhead cranes during loading.

Technical Specifications

Parameter	Standard Specification	Custom Options
Max. Web Width	1,600 mm / 1,800 mm	Up to 2,500 mm
Max. Mechanical Speed	500 m/min	Up to 800 m/min
Unwind Diameter	Max. 800 mm	Max. 1,000 mm
Rewind Diameter	Max. 600 mm	Max. 800 mm
Min. Slitting Width	30 mm (Shear)	15 mm (Razor)
Tension Control Precision	+/- 0.1 N	High-resolution load cell feedback
Main Drive Motor	Industrial AC Vector Motor	Servo motor per rewind station
Electrical Supply	380V, 3-Phase, 50/60 Hz	Customized to regional grid standards

Compatible Materials

Plastic Films

BOPP, PET, CPP, PVC, PE, Nylon (Thickness range: 12 um to 200 um).

Paper & Board

Kraft paper, release paper, thermal paper, cup stock (30 gsm to 350 gsm).

Foil & Laminates

Aluminum foil, copper foil, multi-layer extrusion laminates.

Specialty Webs

Non-woven fabrics, battery separator films, self-adhesive label stock.

Applications

01/

Flexible Packaging: Converting printed barrier films for food and pharmaceutical pouch manufacturing.

02/

Self-Adhesive Labels: Slitting master stock into narrow rolls for thermal transfer label printers.

03/

Lithium Battery Production: Processing micro-thin copper and aluminum current collectors and separator membranes.

04/

Industrial Paper & Foil: Converting insulation materials and heavy industrial wrapping substrates.

Machine Configuration & Customization

01.

Unwind Configurations

Floor pickup hydraulic shaftless stands or standard shafted pneumatic air-expanding shafts.

02.

Slitting Modules

Interchangeable pneumatic shear knife holders, stationary razor blade blocks, or pneumatic crush cutters.

03.

Unload Systems

Automatic hydraulic unload trees that swing finished rolls out to trolley carts, reducing operator fatigue.

04.

Control Architecture

Programmable logic controller (PLC) architecture paired with an intuitive 15-inch industrial HMI touchscreen interface.

Manufacturing & Quality Control

Frame Machining: All side walls and structural base frames undergo annealing heat treatment to eliminate internal stress, followed by precision milling on large CNC floor borers to ensure parallelism within 0.02 mm.

Roller Balancing: Every aluminum guide roller and rewind shaft undergoes dynamic balancing at 1,500 RPM to eliminate vibration harmonics at top operating speeds.

Factory Acceptance Testing (FAT): Each machine undergoes a 72-hour continuous dry-run test and a live test using client-supplied master rolls. Inspection reports record tension stability curves, bearing temperatures, and noise emission levels.

Compliance Standards: Electrical panels are designed in accordance with major international industrial safety directives (such as CE alignment standards), utilizing globally standardized industrial automation components (ensuring local replacement availability without proprietary lock-in).

Installation & Technical Support

Commissioning

Senior mechanical and electrical engineers handle on-site installation, leveling, power integration, and trial runs.

Remote Diagnostics

An embedded VPN router inside the main electrical enclosure permits encrypted remote PLC troubleshooting and software updates by factory engineers.

Operator Training

On-site training covers routine mechanical adjustments, knife setting protocols, HMI recipe programming, and preventive maintenance schedules.

Spare Parts Availability

Critical wear components (drive belts, pneumatic seals, friction rings, optical sensors) stock locally for 48-hour dispatch.

Frequently Asked Questions

Q: How does the machine prevent telescoping when rewinding slippery or stretchy films like CPP and PE?

A: Telescoping is prevented through dual-zone tension zoning and individual differential friction rings on the rewind shaft. As roll diameter increases, pneumatic pressure adjusts automatically via controller algorithms, maintaining constant torque across every slit roll regardless of individual thickness tolerances.

Q: What is the typical setup time required when changing slitting widths between job orders?

A: A standard multi-knife shear setup takes 15 to 25 minutes using manual positioning with scale rulers. Optional automated knife-positioning systems reduce this transition window to under 3 minutes by driving individual knife holders via independent stepper motors.

Q: Can this slitter rewinder integrate directly with existing inline printing or coating lines?

A: Yes. The machine can be configured as a standalone offline unit or integrated inline. Inline setups require synchronization signals (encoder feedback) from the upstream extruder or printing press to match line speeds dynamically.

Q: What utilities and floor space are required for a standard 1,600 mm model?

A: The machine requires a 380V/440V 3-phase power supply (approx. 22 kW total connected load) and a compressed air supply of 0.6 MPa (6 bar) at 200 L/min. Recommended operational floor space is 4.5 meters in length by 3.2 meters in width, allowing clear clearance for master roll loading and finished roll extraction.

Q: How are electrical components sourced, and are they compatible with international standards?

A: Main control architecture relies on globally standardized industrial automation components and robust circuit breakers designed for international compatibility, ensuring local parts availability without proprietary lock-in.

Q: What documentation is provided upon machine delivery?

A: Each delivery includes a complete technical dossier: English electrical schematics, pneumatic piping diagrams, CNC part machining drawings, PLC backup software files, safety compliance declarations, and a detailed FAT inspection certificate.

With abundant experience, we are one of the most professional rewinding machine manufacturers and suppliers in China. Please rest assured to wholesale high quality rewinding machine at competitive price from our factory. If you have any enquiry about cooperation, please feel free to email us.

Stretch Film Cling Film Rewinding Machine, Cling Film Aluminum Foil Rewinder Machine, Plastic Film And Paper Rewinder