Natraj Corrugating Machinery Co.

1. Touch Screen Controls with PLC Integration

   • Each movable unit is equipped with a touch screen interface.

   • Programmable Logic Controller (PLC) system allows for full digital control of operations and order settings.

   • Capable of interconnecting with an integrated computer system for centralized management.

   • All functions and parameters are displayed digitally for ease of operation.

2. Lead Edge Feeding System

   • Advanced lead edge feeder design improves feeding precision.

   • Enables wider application across various types of paperboard, including thin and warped sheets.

3. Automatic Positioning and Adjustment

   • Features auto zero return and auto reset for enhanced operational efficiency.

   • Printing cylinder movement is motorized in the transverse direction with digital display feedback for accurate positioning.

4. Six-Shaft Rotation System

   • Incorporates pre-creasing, creasing, and slotting shafts for versatile box forming capabilities.

   • Includes memory storage for multiple order settings and supports quick order changeover for high productivity.

5. Durable Construction & Manual Gap Adjustment

   • Stainless steel gearbox cover ensures high durability and corrosion resistance.

   • Manual gap adjustments feature a self-locking mechanism to maintain precision and safety during operation.

6. Premium Component Integration

   • Key components are sourced from world-renowned brands.

   • Guarantees reliable performance, longer service life, and minimized downtime.

Take your packaging production to the next level of automation and precision with our state-of-the-art machine designed for high-speed, high-efficiency operations.

• Each unit is equipped with individual touch screen panels with advanced PLC control.

• Fully integrated with the main computer system – allowing digital display of all operations and order settings.

• Pneumatic interlocking system across all units with built-in safety protection.

• Audible alarm during unit movement ensures operator safety.

• All gears are carburized, quenched, and precision ground.

• Continuous lubrication system with a recycle sprayer guarantees smooth performance and long life.

• All key parts sourced from international top brands to ensure reliability and durability.

• Integrated system for order management and quick job shifting.

• Designed for 24/7 automatic production – ideal for modern packaging lines.

• Upper suction motor and brusher for effective sheet cleaning.

• Motorized ON/OFF control for each unit with automatic safety lock.

• Frequency-controlled suction system, easily adjustable via sectional knob.

• Main motor equipped with frequency inverter and protective lockout (machine won’t run if units are not locked).

• Pneumatic brake on drive shafts to prevent damage during faults or incorrect operation.

• Motorized side guides (left-right).

• Backstop (up/down): Manual | Backstop (front/back): Motorized.

• Front guide: Manual.

• Manual pressure control to suit different board sizes and materials.

✅ Perfect for High-Speed, Large Volume Corrugated Box Manufacturing!
📞 Contact us today for a live demo or customized quote.

�� Boost Your Packaging Efficiency with the RNN-1500P, a heavy-duty, high-precision Auto Flat Bed Die Cutting and Creasing Machine specially designed for corrugated paper and colored box production.

✅ Precision Meets Power – With cutting-edge Concora Crush die-cutting technology and a robust 300 N/cm pressure, handle even the toughest corrugated sheets with ease.

• Model: RNN-1500P

• Die-Cutting Style: Concora Crush

• Max. Paper Size: 1500 × 1100 mm

• Min. Paper Size: 550 × 500 mm

• Max. Die-Cutting Size: 1490 × 1090 mm

• Max. Die-Cutting Pressure: 300 N/cm

• Paper Thickness: 1–8 mm

• Max. Speed: 4500 sheets/hour

• Max. Feeding Pile Height: 1400 mm

• Max. Delivery Pile Height: 1200 mm

• Total Power: 13.5 kW

• Machine Weight: 20 Tons

• Machine Dimensions: 6800 × 4910 × 2250 mm

• ✔️ Lead Edge Feeder – Accurate feeding for high-speed production

• ✔️ Auto Stripping System – Increases productivity, reduces manual work

• ✔️ Built for Corrugated Board – Ideal for packaging, printing, and colored box manufacturers

• ✔️ Heavy-Duty Frame – Ensures stability, precision, and long-term durability

�� Perfect for: Carton manufacturers, commercial printers, packaging companies, and large-scale box production units.

1. The machine adopted independent touch computer combined with PLC at each unit of machine that could be adjusted automatically when apply for digit input or order managing. It will cut lots of time while operating.

2. 250-300 sheets per minute when runs at the top speed. It could be efficient to produce one hundred thousand pieces of carton of daily productivity.

3. In-line control of flexo printer combined with folder gluer. Integral order management and quick shift function are available. It made the significant revolution for completely automatic production line in packaging field.

4. Can match with Auto Pre-Feeder or Auto Strapping Machine, 3-4 workers for whole production line is available, greatly reduce the labor cost and labor intensity.

• Control system: Siemens PLC, production order can be saved and recalled to save changing time. Memorize system for easy operation and maintenance.
• Double servo feeding system,each row of feeding wheels is driven by independent servo motor, high precision and low noise, no feeding rollers in feeder to prevent the corrugated wave from damaging.
• Printing: Doctor blade inking system???high printing quality easy washing ink saving.
• Slotter: computerized set the box length, width and box height, fast and convenient.
• Die cutter: independent engine drive controlled by KEB servo system from Germany to ensure the die cutting accuracy. Surface speed compensation system. Die cylinder shifts when running to prolong the life of rubber anvil.
• Gears are made of high-quality chrome steel, heat treated and grinded to ensure the high stability and precision.
• Bearings and electrical components are all famous brand in Taiwan and in China.

✨ Custom-Built to Your Needs | High Efficiency | Superior Output Quality ✨

🔹 Color Group
✅ Fully customizable as per user requirements – designed to suit your specific production needs!

🔹 Compatible Printing Paper Types
✔ A, B, C Flute Combinations
✔ A/B, B/C, A/B/C (13 mm thickness)

🔹 Production Speed
🚀 High-Speed Mode: Up to 120 pieces/min
⚡ Economy Mode: 80 – 100 pieces/min

🔸 Max. Paper Sizes
✔ 1500 × 2100 mm
✔ 2300 mm
✔ 2500 mm
✔ 2700 mm

🔸 Min. Paper Sizes

• Positive Knife: 320 × 680 mm

• Negative Knife: 350 × 750 mm

🔸 Max. Printing Sizes
✔ 1200 × 1900 mm
✔ 2100 mm
✔ 2500 mm
✔ 2500 mm

🔸 Standard Printing Plate Thickness
✔ 4 – 9 mm

🔸 Printing Roller Diameter (Incl. Plate Thickness)
✔ Ø 410 mm

🔹 Max. Paste Edge Width:
✔ 50 mm

🔹 Slot Width & Max Depth:
✔ 7 mm × 300 mm

🔹 Minimum Slot Space:

• Positive Knife: 160 × 160 × 160 × 160 mm

• Negative Knife: 300 × 50 × 300 × 60 mm

🛠 Additional blades and slot depths can be configured as per customer requirement!

✅ Heavy-Duty Design
✅ Precise Registration
✅ Low Maintenance
✅ High Return on Investment

PERFORMANCE FEATURES OF FEEDING UNIT
Vacuum Lead Edge Feeding System, Variable Frequency Drive Air Volume Control.
Pneumatic Side Baffle, Front And Side Baffles Motorized Adjustment.
Counting Function, Touch Screen Display, Continuous And Skip Feeding Are Available.
Optional: Gear Box Motor Feeding System / Servo Mortor Feeding System

PERFORMANCE FEATURES OF PRINTING UNIT
Registration Adjusted By Feeder PLC Or Section’s PLC.
Boards Pull Wheels Fast Lock Lateral Move System.
Manual Gap Pressure Adjust, Automatic Lock Device

PERFORMANCE FEATURES OF SLOTTER
Slotter Unit Use Six Axis Design, Slotting Size Computerized Adjusting, Servo Motor Control.
Middle Knife Movable, Variable Boxes Available.
Double Serew Shafts Match With Liner Guides, Linked Together For Fast And Precise Adjusting.
Eight Axis Design Is Optional (Pre-Creaser, Two Creasers, Slotter

Our high-performance Flexo Printer Slotter Machine is designed for precision, durability, and user-friendly operation. Featuring advanced automation and intelligent control systems, this machine ensures optimal printing quality with minimal downtime – ideal for modern corrugated packaging operations.

✅ Smart Memory Positioning System
Easily remember and restore the printing cylinder’s position after adjustments. This intelligent system ensures quick setup and minimal errors when restarting the machine.

✅ 7.0” Touchscreen Control Panel
User-friendly HMI with computerized register control. Allows accurate, motorized axial adjustment of the printing cylinder (±5mm) for perfect alignment.

✅ Ink Shortage Alarm
An integrated buzzer alerts operators when ink levels are low, preventing printing defects and downtime.

✅ Quick Plate Mounting System
Save valuable time during plate changes! A foot switch rotates the cylinder for hassle-free plate installation.

✅ Automatic Anilox Roll Lift-Up System
When sheets are not feeding, the anilox roll lifts and separates from the printing plate automatically – keeps ink from drying by allowing continuous rotation.

✅ Self-locking Feeding Wheels
Fast, screw-free adjustment of feeding wheels on the printing unit. Move easily and lock in place automatically.

✅ Emergency Stop Safety System
Ensures operator safety during machine maintenance or operation between units.

✅ Gear Locking Safety Design
Prevents misalignment and mechanical damage – the gear locks securely when units are opened or closed.

💡 Ideal For: Corrugated box manufacturers, packaging printers, and businesses looking for high-speed, high-accuracy flexo printing with minimum downtime and enhanced operator safety.

✅ Flexo Printer Slotter Die Cutting Machine – Model: RNN ϕ395×2500

We are leading names in the industry, offering a high-performance Flexo Printer Slotter Die Cutting Machine known for precision, durability, and smooth operation. Ideal for corrugated paperboard processing with excellent print and slotting quality.

• Model: RNN ϕ395×2500

• Max. Feeding Size: 1200 × 2600 mm

• Min. Feeding Size: 300 × 680 mm

• Max. Printing Area: 1200 × 2500 mm

• Mechanical Speed: 120 pcs/min or 160 pcs/min

• Feeding Roller Diameter:

  • Upper Roller: ϕ128.4 mm

  • Bottom Roller: ϕ163 mm

• Embossing Roller Diameter: ϕ163 mm

• Metal Anilox Roller: ϕ198 mm

• Rubber Ink Roller: ϕ193 mm

• Upper Feeding Roller: Single inserting groove rubber – ensures balanced rectifying, smooth & accurate feeding

• Lower Feeding Roller: Steel embossing roller with hard chrome plating – wear-resistant & precisely adjusted

• Micro Adjusting Mechanism: Cross-shaped driving with spanner adjustment and dial display – self-locking & easy to operate

• Reset Function: One-touch automatic zero-reset system – reduces changeover time and cardboard waste

• Pneumatic Brake Device: Maintains position accuracy during unit separation

• Gear Alignment: Original meshing point remains unchanged when separating machine units

• Electric Control Panel: Individual button switch control for machine separation & combination

• Safety Alarm: Continuous alarm during movement – ensures operator safety

• Pneumatic Interlocking: Secure and accurate locking mechanism for all units

✔ Trusted Industry Expertise
✔ High-Precision Components
✔ User-Friendly Controls
✔ Reduced Downtime & Waste
✔ Enhanced Productivity

Characteristics:

1.     Use Lead-edge  feeding unit with absorption system on the table, can let the curved board pass smoothly.

2.      Drive gear is helical gear system.

3.  Printing unit and die-cutting unit are adjusted by electrical digital 360degree, reduce time and improve work efficiency.

4.   Frequency motor drive, customers can adjust the speed freely in the range.

5.  The gap of printing roller with big adjusting range, it is fit for three, five, seven layer with different thickness paper board with high printing precision.

6.  This machine use electrical separable structure, customers can achieve single color, double color or more color printing, easy for maintenance, with pneumatic locking, separate position, operation quickly and conveniently.

7.  All the motor are made in China. Customers need to inform us advance if need other brand motor

1. The printing roller surface is hard chromium plating and polished, make it work stable.

2. The uniforming roller is coated with abrasive rubber, the mid-high is parabola type for     compensating the forced deformation, improve the ink transmission. The rubber is Nitrile rubber, hardness above 60 degrees, good effect for supplying ink after special polished. The rubber roller is driven by motor when the machine stop, machine stop and continuous supplying ink, auto uniform ink.

3. The anilox roller is from famous domestic brand,the rollers are made by mature

technology, the cylinder is less 0.016mm,radial circle run out is less than 0.1mm, with 25 times the magnifier for the overlapping curve, margin, and the micro hardness of HV900-1050. So it is good at store,uniforming a transmission ink, it is the best choice for printer. (The anilox roller mesh is depends on customer)

4. The electrical phase adjustment device, make the machine adjusted longitude 360°when

work or stop, saving change time.

5. The pneumatic diaphragm pump circulating supply ink, operation and maintenance easy.

6. Use pneumatic lifting plate, auto even ink,stop machine continuous supplying ink, avoid the ink drying when machine stop, reduce the disadvantageous factor for printing effect

Our high-performance Flexo Printer Slotter Machine is designed for precision, durability, and user-friendly operation. Featuring advanced automation and intelligent control systems, this machine ensures optimal printing quality with minimal downtime – ideal for modern corrugated packaging operations.

✅ Smart Memory Positioning System
Easily remember and restore the printing cylinder’s position after adjustments. This intelligent system ensures quick setup and minimal errors when restarting the machine.

✅ 7.0” Touchscreen Control Panel
User-friendly HMI with computerized register control. Allows accurate, motorized axial adjustment of the printing cylinder (±5mm) for perfect alignment.

✅ Ink Shortage Alarm
An integrated buzzer alerts operators when ink levels are low, preventing printing defects and downtime.

✅ Quick Plate Mounting System
Save valuable time during plate changes! A foot switch rotates the cylinder for hassle-free plate installation.

✅ Automatic Anilox Roll Lift-Up System
When sheets are not feeding, the anilox roll lifts and separates from the printing plate automatically – keeps ink from drying by allowing continuous rotation.

✅ Self-locking Feeding Wheels
Fast, screw-free adjustment of feeding wheels on the printing unit. Move easily and lock in place automatically.

✅ Emergency Stop Safety System
Ensures operator safety during machine maintenance or operation between units.

✅ Gear Locking Safety Design
Prevents misalignment and mechanical damage – the gear locks securely when units are opened or closed.

💡 Ideal For: Corrugated box manufacturers, packaging printers, and businesses looking for high-speed, high-accuracy flexo printing with minimum downtime and enhanced operator safety.

• Lead edge feeder, stable and accurate. Upper feeding roller is rubber roller with suspension design,feeding pressure is air cylinder adjusting, protecting the corrugated board from damaging during transmitting.The lower feeding roller is coated by ceramic material with rough surface to prolong using life and enhance friction force.
• Dust removal device: the cleaning brush and the suction fan can clean the dust on surface of corrugated board to improve the printing quality.
• Side baffle is motorized control. Flapping device to make the sheet pile in good shape.
• Control system
• All parameters can be showed and adjusted in the main touchscreen. The phase of each unit, box length,width and height can be setted in the main touchscreen.
• Memory system: Production orders can be saved and recalled to save changing time.
• Ink alarm system, the buzzer sounds when the printing unit be lack of ink.

The latest industrial design, all the gear covers adopt high quality stainless steel, beautiful and durable.

Uniformly driving, pneumatic interlocking, each single unit OPEN/CLOSE with alarm and safety protection device.

Each unit is equipped with an emergency switch, can stop the unit moving when inside of machine to ensure the safety of operators.

Maximum speed 300 sheets per minute, can easily reach to a daily production of 100,000 cartons, greatly improve production efficiency.

All main transmission gears are made of special imported materials, carburized and quenched, precision ground, durable; Oil pump spray system for gear lubrication.

All the electric components adopt international first-class brand, stable and durable, the main control electric box is equipped with industrial constant temperature air conditioner, and each unit electric box are equipped with dustproof, heat dissipation devices to ensure stable and reliable operation performance.

The machine is equipped with automatic Oil Balance Device & automatic Circle Lubrication System.

Printing Unit adopts Vacuum transfer, widely application for cardboard, especially when the machine is closed, Each Unit suction devices are connected together to ensure same pressure, which is more accurate printing and save adjusting time and cardboard.

Our high-performance Flexo Printer Slotter Machine is designed for precision, durability, and user-friendly operation. Featuring advanced automation and intelligent control systems, this machine ensures optimal printing quality with minimal downtime – ideal for modern corrugated packaging operations.

✅ Smart Memory Positioning System
Easily remember and restore the printing cylinder’s position after adjustments. This intelligent system ensures quick setup and minimal errors when restarting the machine.

✅ 7.0” Touchscreen Control Panel
User-friendly HMI with computerized register control. Allows accurate, motorized axial adjustment of the printing cylinder (±5mm) for perfect alignment.

✅ Ink Shortage Alarm
An integrated buzzer alerts operators when ink levels are low, preventing printing defects and downtime.

✅ Quick Plate Mounting System
Save valuable time during plate changes! A foot switch rotates the cylinder for hassle-free plate installation.

✅ Automatic Anilox Roll Lift-Up System
When sheets are not feeding, the anilox roll lifts and separates from the printing plate automatically – keeps ink from drying by allowing continuous rotation.

✅ Self-locking Feeding Wheels
Fast, screw-free adjustment of feeding wheels on the printing unit. Move easily and lock in place automatically.

✅ Emergency Stop Safety System
Ensures operator safety during machine maintenance or operation between units.

✅ Gear Locking Safety Design
Prevents misalignment and mechanical damage – the gear locks securely when units are opened or closed.

💡 Ideal For: Corrugated box manufacturers, packaging printers, and businesses looking for high-speed, high-accuracy flexo printing with minimum downtime and enhanced operator safety.

Specifications:

Material: Stainless Steel

Voltage: 380 V,m 50 Hz

Power(W): 19.8 kW

Standard printing plate: 4-9 mm

Corrugated board: 2-12 mm

Whole Machine Features

• Four Axis Lead edge Feeder System.
• Skip Feeding Setting Available,Can produce Large Size Boxes.
• Apply Expansion Sets Tight Links,Long years Using with precise printing.
• Colorful Touch screen Input,Auto "Zero",reposition,Save Time and Boards.
• Powerful Main Phneumatic Cylinder Lock, make sure machine stable running.
• Self-Protection system,Machine only running after all sections locked well.
• Storage with 1200orders data base.

 Repeat orders can be stored and recalled by PLC control for fast order set-up and easy operation. 9999 orders could be saved. Dedicated computer control desk is provided.

 CE certificated machine designed with advanced concept, made according to European standards with TAI YI many year experience.

 Malfunctions can be diagnosed by remote control system. Maintenance and trouble- shooting will be more efficient.

 Driving shafts are made of high-quality steel, chrome plated, and surface ground.

 Imported gears are hardened and ground (hardness 60HRC).

 Lubrication oil leveled system to keep all units lubrication oil in the same level.

 Every unit is also equipped with an emergency stop switch for increased safety. The machine operator, working inside each unit can stop the unit from moving at any time.

 All units of the machine can be separated automatically or manually, an audible alarm sounds during the opening and closing for safe operation

 All gaps setting controlled by PLC.

1) Feeder Unit

 Continuous or skipping feeding is available with counter

 With three shafts and strong vacuum suction. So the feeding precise and stability are promised for both high speed and low speed.

 EXTEND-O-FEED supplied by Sun Automation, feeding stroke could be adjusted to reduce feeding roller impression.

 Frequency converter control the vacuum to match different size paperboard.

 High stability with high speed, less noise and variation.

 Feeding roll gap, left and right side guides are PLC controlled.

 Backstop forward and backward movement PLC controlled for fast setting.

 Anti static system, dust removal system with several brushes and segmented vacuum sheet cleaner.

 Upper feeding roll wrapped with wear resistant rubber.

 Lower feeding roll surface knurled and chrome-plated.

 Feeding roll gap PLC control, range is 0-12mm.

 Cam bearing applied for impression roll power transmission, wearing reduced and also transfer more stable.

 Main motor protected from starting up when units are not completely closed and locked.

 Encoder applied for all units with zeroing function.

 Zeroing function used for sample making, generally speaking two paperboards are enough.

The Dongfang 4-colour flexo printing machine is a high-performance, integrated solution for corrugated box production.. Known for its reliability and precision, this machine performs flexographic printing, slotting, and rotary die cutting in a single streamlined process.

• Type: Lead Edge Feeder Flexographic Printer Slotter Die Cutter

• Make: Dongfang

• Origin: Imported

• Application: Printing, slotting, and die-cutting of corrugated cardboard sheets

• Printing Stations: 4 colour flexo printing units

• Voltage: 380V, 3-phase, industrial standard

1. Lead Edge Feeding System

   • Ensures stable and precise sheet feeding

   • Suitable for a wide range of corrugated boards, including warped sheets

2. Flexographic Printing Units (4 Colours)

   • High-definition printing with water-based ink

   • Each unit equipped with independent controls for easy calibration

   • Fast setup and accurate registration

3. Slotter Unit

   • Precision slotting with quick changeover settings

   • Adjustable creasing and trimming tools

4. Rotary Die-Cutting Section

   • Capable of complex box shapes and cut-outs

   • Die cylinders ensure consistent cutting accuracy

5. Control System

   • Centralized control with user-friendly interface

   • Digital display for real-time monitoring and order management

   • Optional PLC with memory storage and quick order change functionality

6. Build & Components

   • Heavy-duty structure ensures long-term stability

   • Equipped with high-quality global brand components

   • Safety guards and interlocks included for operator protection

• Voltage: 380V / 50Hz / 3-phase

• Number of Colours: 4

• Operation Mode: Fully automatic with manual override

• Sheet Feeding Type: Lead edge

• Functions: Printing, Slotting, Die Cutting in one pass

• Control system: Siemens PLC, production order can be saved and recalled to save changing time. Memorize system for easy operation and maintenance.
• Vacuum feeder, stable and accurate. Upper feeding roller is rubber roller with suspension design,feeding pressure is air cylinder adjusting, protecting the corrugated board from damaging during transmitting.
• Printing: Adopt famous brand anilox roll and rubber roll to ensure high-quality printing.doctor blade system is optional.
• Ink fast collecting system for saving ink,Automatic washing of anilox roller,connect the machine to user's warter supply,automaticly wash until anilox roller is cleaned well,washing time can be set in time relay.
• Automatic Slotter: The box length, width and box height are computerized setting,fast and convenient.the creasing wheel is coated with rubber to protect the board from damage.
• Die cutter: independent engine drive controlled by KEB servo system from Germany to ensure the die cutting accuracy. Surface speed compensation system. Die cylinder shifts when running to prolong the life of rubber anvil.
• Gears are made of high-quality chrome steel, heat treated and grinded to ensure the high stability and precision.
• Bearings and electrical components are all famous brand in Taiwan and in China.

🚀 Boost Your Packaging Efficiency with the RNN-1500P, a heavy-duty, high-precision Auto Flat Bed Die Cutting and Creasing Machine specially designed for corrugated paper and colored box production.

✅ Precision Meets Power – With cutting-edge Concora Crush die-cutting technology and a robust 300 N/cm pressure, handle even the toughest corrugated sheets with ease.

• Model: RNN-1500P

• Die-Cutting Style: Concora Crush

• Max. Paper Size: 1500 × 1100 mm

• Min. Paper Size: 550 × 500 mm

• Max. Die-Cutting Size: 1490 × 1090 mm

• Max. Die-Cutting Pressure: 300 N/cm

• Paper Thickness: 1–8 mm

• Max. Speed: 4500 sheets/hour

• Max. Feeding Pile Height: 1400 mm

• Max. Delivery Pile Height: 1200 mm

• Total Power: 13.5 kW

• Machine Weight: 20 Tons

• Machine Dimensions: 6800 × 4910 × 2250 mm

• ✔️ Lead Edge Feeder – Accurate feeding for high-speed production

• ✔️ Auto Stripping System – Increases productivity, reduces manual work

• ✔️ Built for Corrugated Board – Ideal for packaging, printing, and colored box manufacturers

• ✔️ Heavy-Duty Frame – Ensures stability, precision, and long-term durability

💼 Perfect for: Carton manufacturers, commercial printers, packaging companies, and large-scale box production units.