Carton Box Semi Automatic Corrugation Machine

## Introduction: Nagpal Natraj Fingerless Single Facer

The **Nagpal Natraj Fingerless Single Facer** (Model: RNN1800mm / RNN Series) represents cutting-edge design in modern, high-speed corrugated board production. Engineered specifically for heavy-duty industrial environments, this machine eliminates standard guide claws (fingers) through an advanced **vacuum suction feeding mechanism**. This design drastically reduces friction, completely prevents damage to flute peaks, and ensures immaculate starch application across the board.

By providing uniform heat transfer and precise roll alignment, it guarantees superior structural compression, enhanced flat-crush strength, and flawless aesthetic finishing for your multi-ply production lines.

## Key Structural & Design Features

 * **Advanced Vacuum Suction System:** Outfitted with a high-pressure, noise-deadened blower that seamlessly draws the paper web flat against the main corrugating roll, keeping the system operating fingerless with maximum consistency.

 * **Precision Corrugating Rollers:** Built using robust **48CrMo alloy steel**. The rolls undergo specialized laser hardening and precision grinding to achieve a hardness of **HRC60 or higher**, extending operational lifespans significantly.

 * **Anodized Groove-Free Glue Applicator:** Features an engraved, polished 25-line net textured roller that achieves clean, metered glue distribution without wastage or dry gaps.

 * **Heavy-Duty Structural Integrity:** Constructed with a solid **130mm thick cast-iron wallboard** and an integrated base frame that suppresses high-speed vibration and ensures seamless stability.

 * **Pneumatic Control Interface:** The lifting, retraction, and compression adjustments for the pressure roller, upper corrugating roller, and glue assembly are fully automated via heavy-duty pneumatic cylinders.

## Technical Specifications Table

| Parameter | Specifications |

| :--- | :--- |

| **Brand Name** | Nagpal Natraj |

| **Model Code** | RNN Series (e.g., RNN1600mm / RNN1800mm) |

| **Automation Grade** | Semi-Automatic / Integrated System Options |

| **Design / Production Speed** | Up to 100\text{ m/min} (Standard operational: 40\text{--}60\text{ m/min}) |

| **Effective Working Widths** | 1600\text{ mm} and 1800\text{ mm} sizes |

| **Total Daily Capacity** | Up to 40\text{ Ton/day} |

| **Corrugated Flute Profiles** | UV Type or UVV Type (Flutes A, B, C, E, etc.) |

| **Main Corrugating Roll Dia.** | \phi 280\text{ mm} |

| **Pressure Roller Diameter** | \phi 284\text{ mm} |

| **Glue Roller Diameter** | \phi 215\text{ mm} |

| **Preheat Roller Diameter** | \phi 300\text{ mm} / \phi 320\text{ mm} |

| **Main Drive Motor Power** | 7.5\text{ kW} (with high-end Delta VFD / Variable Frequency Speed Adjustment) |

| **Vacuum Suction Motor** | 7.5\text{ kW} Continuous (S1) Standard |

| **Required Working Voltage** | 380\text{ V}, 50\text{ Hz}, 3\text{-Phase} |

| **Optimal Steam Temperature** | 160^{\circ}\text{C} to 200^{\circ}\text{C} |

| **Steam Operating Pressure** | 0.8\text{--}1.3\text{ MPa} |

| **Pneumatic Gas Source Range** | 0.4\text{--}0.9\text{ MPa} |

| *Approximate Weight** | 2,150\text{ kg} to 3,000\text{ kg} (depending on width configuration) |

*Operational Note:** The system features integrated layout controls, allowing the operation station to be situated seamlessly on either the left or right side to directly match your plant’s existing 

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