Application:-Rotogravure Printing Machine

The stack type of 8 colour Rotogravure printing machine, “Suddha Thunder” is used for fine quality of printing on packaging substrate.

Main Frame

The printing machine gives vibration free, noise less and steady production even at maximum speed because of its sturdy and robust construction. The body frame is made of superior grade cast iron material with adequate number of Tie Bars.

Dry Lamination of two webs.  Three webs can be laminated in second Operation. Coating of special lacquers also can be made. Attachment of Wet Lamination can be incorporated on request

Gravure coating method is followed.  Coating roller mounting assembly can accept integral shaft type as well as hollow type coating rollers. Pneumatic applications systems for the pressure rollers. Pneumatic pressure application system for the doctor blade units. Unit heating system either by electrical radiator or indirect air heating system with imported burner or through thermic fluid radiator system and with drying tunnel of 30 feet length.

A tailor made Dry Lamination Machine. Hoods are pneumatically opened for easy guiding of the web and cleaning of the idler rollers. Air volume can be controlled by manual dampers at each entry point.
Exhaust nozzles are equally distributed along with tunnel length. Pressure of dry nip unit is pneumatically applied, this ensures  equal pressure across the web width. Customized drive suitable to users application & budget. It also ensures flexibility of a tailor made machine. Cat walk along the machine length provides easy access to the drying tunnel . Sturdy construction of body enable high speed coating lamination  without vibration. Web guide unit for primary unwinder.
Web chaser in poly unwinder to guide poly film with coated film reference.
Center or surface type re-winding system.

This multipurpose slitter re-winder is a duplex, cantilever, centre winding machine capable of handling virtually any material from high tensile film, aluminium foil and film laminates at high speeds, It is designed for easy operation with maximum automation. It provides an economic and easy solution to cater to the increased production demands by upgradation to a higher level of automation.

Differential Rewinding System – It consists of twin rewind shaft with ball type friction shaft assuring fast change over and finished rolls of consistent quality and uniform density.

Adjoining faces of ball shaft spacers act as individual slip-clutches and each slit strip is free to wind at its own speed and tension, regardless of the size of adjacent wound rolls.

Pneumatic Lay-on roll (common) with auto pressure control through E2P converter helps to iron out air pockets in the rewound roll and greatly assists in controlling difficult materials. Pneumatic control is provided for common lay-on roller, shaft support arm, main nip pressure, shaft lock, and clamp operation.

An ultrasonic sensor is provided to sense the minimum increase in rewind diameter to monitor & control the total tension of the system.
 

Cutting Unit - It consists of razor blade slitting system with grooved roll and blade holder. Top and bottom rotary shear slitting with angle engaging option is achieved through gear box. A high capacity trim disposal unit complete with fan-motor and chute is provided along with trim collection bobbin.

Guiding System - Digital web cum line guiding system in the unwinding station with tracking system is incorporated for maximum accuracy. Un-winder portion is a separate module of the machine with shaft less chucks with hydro motor. The unwinder along with material travels on tracking trolley with a sliding accuracy of +/- 50 mm. A heavy duty hydraulically operated material loading system is provided for lifting and lowering down mechanism of unwind arm.

Un-winder Tension Control - Load cell based 6 caliper imported pneumatic brake with suitable mechanical transmission is provided through reducing gears. Ultrasonic sensor for the system is also available for close monitor of unwind tension.

Re-winder Shaft - Heavy duty, multiple bearing supported ball friction rewind shaft is be provided with the machine. Pneumatic auto pressure control with E2P will maintain sleep for each coil. Pneumatic auto shaft locking, shaft support arm system is also provided for easy removal of slitted roll.

Nip Unit - Consisting of one 150 mm diameter balanced, ground and hard chromed steel roller (driven by main motor ) and one pneumatically pressured rubber nip with both side control. One adjustable roll is positioned before nip to remove wrinkles, if any, from unwind material.

Control system with Parker SSD/Siemens make digital A.C drive & un-winder tension control with load cell based pneumatic brake ( Re, Italy ) of 6 calipers is be provided with the machine along with MMI and PLC.

Safety interlocks are provided in all operation sequences.

All motors are of ABB / L&T / Siemens make.

E+L make unwind web cum line guiding system with heavy duty traveling trolley is provided.

This Inspection re-winder is a reversible, simplex, single shaft centre winding machine capable of handling all type of printed films for salvaging before lamination. It is designed for easy operation and minimum maintenance. Construction of this machine is suitable for hydro - clamping based fast loading of material and with reversible facilities to keep same direction of printed film.

Consisting of shaft less chucking system to hold the material during winding directly connected with drive with suitable mechanical transmission assures finished roll of consistent quality and uniform winding. Chucking through hydro motor and final clamping through chuck pressure ( adjustable ). With the increase in dia in both the side the specified drive will take care to make a good build up. A full width viewer will be provided before rewinder side with wide auto synchronized stroboscope to inspect
the printing quality.

A sophisticated A/C drive with tension control and separate reversible motor for rewinding and unwinding shaft is provided with the machine to compensate for the high & controlled tension required for rewound material.

Both drives are suitable for forward & reverse direction application.

Both drives are suitable for encoder feedback.

Both drives are suitable for synchronization with common synchronizer unit.

Control system with Parker SSD make digital A.C drive ( 690 series ) in both un-winder and re-winder.

All motors are of ABB / L&T / Siemens make.

E+L make unwind web guiding system is provided with heavy duty traveling trolley.

Air shafts are provided for easy & maintenance free operation.