corona treater

Corona treatment system is a very effective way to increase the surface tension of virtually any material. Surface treatment is required for plastic films/fabrics whose normal surface tension is not sufficiently high to permit good wetting by flexo graphic inks.  

Corona treatment system increases the surface tension of the fabrics respective to inks by inducing molecular changes in the surface of the films. This is done by exposing the air at the material's surface to a high-voltage electrical discharge - a corona.Corona discharge treatment at atmospheric pressure for improving adhesion of various polymer substrate is now standard practice.  

Our product range are Bare Roller Treater ( for Aluminum Foil / conductive films Corona Treatment with Ceramic Electrodes ) , Narrow Web Treaters , Corona Treater Machine and Corona Treater Systems for Blown Film Extrusion Plants for Monolayer and High Speed Multilayer plants, On-Line Corona Treater for Rotogravure / Flexo-printing machines, Woven Sack Roll Printing, and serving different industries 

Our Range of Products:

v      Corona Treater

v      Corona Treatment System

v      Corona Generator

v      Blown Film Corona Treater

v      Narrow Web Treater

v      Bare Roller Treater 

Narrow Web Corona Treater are primarily used in converting applications like label printing / adhesive coatings substrates / Fibre Glass cloth etc. Narrow web treater are generally single side treater with max. Width upto 12 inch and running at a line speed more than 100 Mtrs. /min. In this type of Narrow Web treaters treatment rollers are of 6 inch dia covered with silicone rubber sleeves and two bare guide rollers. It has cantilever type of construction with Segmented Electrode (4 fins / 6 fins) System covered with FRP for operators safety. These treaters are comes with Ozone Extraction system and assembly open H.T. Interlock for operators safety. It has pneumatically operated Electrode system for threading of the film. 

Narrow Web Treater Features:

v      Pneumatically operated hinged type assembly.

v      Ozone Extraction System

v      External Air Gap Adjustment

v      Single Side Treatment. ( Segmented Electrode )

v      Treatment width: 4 inch to 16 inch.           

Corona Treater for Woven Sack:

Details: Corona Treatment on Woven Fabric; laminated or un laminated (HDPE / PP) increases surface bonding strength by creating polar molecule on the surface. As a result excellent bonding of inks takes place. On untreated fabric, inks adhere on the surface by means of mechanical friction and are easily released by rubbing or adhesive Tape test.  

Corona Treatment on Woven Fabric:

Corona Treatment is a process of high speed oxidation on the polymer surface. This makes the surface polar in nature. This process is limited to surface molecules and doesn't affect the strength of material. 

Application:

Woven Sack Treater is used to treat separate HDPE / PP Woven Sacks or Rolls prior to printing. Our Range of Products, Narrow Web Treater Features, Corona Treater for Woven Sack, Corona Treatment on Woven Fabric, Bare Roller Treater, Corona Generator, Blown Film Corona Generator, Corona Treater for Multilayer Films, Roll To Roll Corona Treatment System, Bag To Bag Corona Treatment System, Woven Sacks Treatment System            

Bare Roller Treater:

Roller/Electrode Assembly for Conductive/Non Conductive Films:

Bare Roller Treater are used for corona treatment of conductive films (like Aluminum Foil and Metalised Film) and Non-Conductive Films (Plastic Film, PE/PP etc.). It is also called Universal Corona Treater.

In the bare roller corona treater, treatment roller is bare ( i.e without silicone sleeve unlike conventional corona treater ) and grounded .

Electrode is Ceramic tubes (Square /Round) to which to which High Voltage is applied. Generally efficiency of Bare Roller Corona Treater is less compared to Silicone Sleeved Conventional Corona Treater and hence more power is required in the Bare Roller Corona Treaters. For this, multiples ceramic electrodes are employed depending upon line requirement.

Bare Roller Corona Treaters are ideal for converting applications because it has following 

However, the Bare Roller Corona Treaters are not without its limitations. They are:

v      The Bare-Roll station required slightly more power (kW) to treat difficult to treat substrates to a given dyne level.

v      The Bare-Roll station did not easily allow stripe or lane treatment which is frequently required on blown lines producing film for bags. This is especially true when the stripe treatment must be adjusted frequently to vary the treat and no-treat dimensions. Converting lines (printing or coating) seldom require stripe or lane treatment except for in-line printing on an extrusion line 

MONOLAYER/MULTILAYER PLANTS:

v      OPEN FRAME STRUCTURE WITH SWIVELING TYPE ELECTRODE

v      OPEN FRAME STRUCTURE WITH SPLIT ASSEMBLY             

Special Features:

v      Ozone Suction is directly done from Electrodes which enables better cooling of electrodes hence operator can touch the electrode for changing treatment width.

v      Continuos Fresh flow of air at electrode provides good corona for high level treatment at wide width/high speed multilayer blown film plants.

v      Open structure allows easy access of treater station for threading and maintenance.

v      Swiveling Type Electrode system provides universal threading path. ( single assembly suitable for horizontal web path as well as vertical web path)

Corona Generator:

GENERATOR PANEL:

Corona Treaters are having Corona Generator capacities in 1.0 KW to 10.KW and more the web width in excess of 2000 mm running at line speed of 250 Mtrs./min, and more. The Roller/Electrode assemblies for Corona Treater are manufactured to suit customers requirement with Treatment Rollers covered with Imported Silicone Rubber Sleeve and in case of Bare Roller Treater with Imported Ceramic Tubes.

We offer Corona Generator with the latest IGBT based Technology, High Frequency and power efficiency above 90%. 

Corona Generator Key Features:

v      Latest IGBT based Technology.

v      High Frequency (Silent) operation 10-50 kHz.

v      Power Efficiency above 90 %.

v      Pulse Width Modulation Technology for Steeples Control of Treatment Power.

v      Fine controls of output power through ten turn lockable potentiometer.

v      Wide load matching, 5 to 1.

v      Feather Touch Front Panel controls with Digital Display of Treatment Power

v      Zero Speed Trip with Audio/ Visual for Web break, increasing life of Silicone Rubber Sleeve and power saving Overload / Short Ckt.

v      Trip with Audio/Visual in case of puncture of silicone sleeve/high voltage insulators breakdown or arcing Phase Failure protection for three phase generator panels.

Corona Treater for Converting Applications:

v      Single Corona treater: SINGLE SIDE CORONA TREATER FOR ON-LINE ROTOGRAVEURE/FLEXO-PRINTING MACHINE

v      Paper Extrusion / Coating Lamination Plant: RUNNING AT 250 MTRS. /MIN. 

Features:

v      Line Speed: 200 Mtrs. /mis.

v      Multifin SS Elecrode with External air gap adjustment.

v      Silicone Sleeved Treatment Roller

v      Single Side Treatment

v      Exteranl Driving of Treatment Rollers with synchronous speed.

v      Pneuamtic Opening/Closing for ease in threading.

v      Ozone Extraction System. 

Corona Treater Specification:

v      Treat width Capacity 20" to 48".

v      Treater Roll Diameter :    50mm,60mm,75mm,100mm,150mm

v      Maximum Line Speed

v      Generel purpose models Max.30mtrs/min

v      Higher Output 30 to 150 mtrs/min

v      As per Customers Requirment

v      Treat Capability

v      Single Side

v      Both Side

v      Eletrodes

v      Multisegment

v      Multi Blade

v      Manualy & Pneuamatically Operated Treater

v      Ozone Extraction Blower With above 36" trate

v      *Easy Airgap Adjustment

 Blown Film Corona Treater Station:

v      Pneumatically Operated Treater Unit.

v      No High Voltage External Connections.

v      Segmented Electrodes / Multiple S.S Blade Electrodes.

v      Dynamically Balanced Rollers.

v      High Quality Silicon Rubber Sleeves

v      Ozone Extractor Blower System

v      Powder Coated Finishing.

v      '0' Speed Switch 

Blown Film Corona Generator: 

v      High frequency Generators are With IGBT Construction

v      softstrat With pulsewidth modulation

v      Mains Input >Single Phase >Three Phase

v      Output Power 0.5kw to 15kw

v      Output Frequency 15 to 35khz

v      Short Ciruit Proof

v      Electronic overload trip

v      "0" Speed Switch

v      Audio Visual Trip

v      Plug and Socket Connection for Easy Installation 

A totally enclosed Manually / Pneumatically operated treater station has easy threading arrangement for web to be treated. The treater rollers are covered with high quality silicon sleeves. High voltage transformer is safely connected to treater rollers without any external high voltage wires. Each roller has segmented electrode operating at ground potential.           

Corona Treater for Multilayer Films 

Multilayer / Wide width web treaters are both side treater with max. length from 1300mm to 5000mm as per customer's requirement. In this type of Wide width Web treaters treatment rollers are covered with silicone rubber sleeves and treaters are pneumatically oprated. 

Multilayer Corona Treater Features: 

v      Pneumatically operated hinged type assembly.

v      Ozone Extraction System

v      Tower Light on the Treater Station to display Fault Condition of Corona Generator

v      Statically and dynamically balanced backing roll

v      External Air Gap Adjustment

v      Easy film thread-up, maintenance and cleaning 

Corona Generator Specification: 

v      IGBT based Technology

v      Soft Start & High Frequency Operation

v      Output Power: 5Kw - 15 Kw

v      Output Voltage: 12 KV

v      Output Frequency: 15-30 KHz.

v      Input Voltage: 3 Phase, 440 Volts. / 50Hz

v      Short Circuit Proof

v      Overload Protection with Alarm

v      -0- Speed Switch

v      Plug & Socket Connection for Easy Installation  

Roll To Roll Corona Treatment System: 

Our  new and improved Split Box station opens horizontally allowing easy thread-up, quick installation, comfortable to operate and simple maintenance... maximizing productivity for BLOWN FILM EXTRUDERS, BOPP, WOVEN SACKS, PAPER COATING PLANT, LAMINATION, AND FLEXO PRINTING MACHINE ETC...                

WIDE WEB WIDTH Advanced IGBT Technology Aluminium Split box type station assembly for light weight and low corrosion Pneumatic operated Treater station. 

Ozone  extraction system efficiently remove ozone and to cool the  electrode. This reduces warping of the electrode and provides more consistent treatment across the web and increase the life of Silicone Sleeve. It protects the operator health from ozone gas. 

SALIENT FEATURES:

v      Digital indication of corona current.

v      Plug/socket connections to electrodes.

v      Continuous heavy duty rating at even maximum operation.

v      Force cooled converter for longer life.

v      Multisegmented electrode facility for adjusting any width of the film.

v      Treatment Rolls with Silicon Sleeves.

v      Smooth To & Fro micrometric air gap adjustment facility.

v      High voltage side insulator on station for high voltage cable entry to avoid short circuit problem.

v      Fully enclosed treater station.

v      Audio/Visual Alarm Facility.

v      Station interlock switches prevent operation when station is in thread-up position.

v      3 OR 4 Inch Dia. Silicon roller for silicon reliability and treatment reliability. 

In order to protect the treater rolls, zero speed switch automatically shuts down the power supply when the web reaches low line speeds. 

OPTIONAL FEATURES:

Pneumatic operated treater station using filtered air from 60-120 p.s.i. Cylinders are controlled by electronic air valve with switch/manual valve.

v      Aluminium frame featuring stainless steel enclosure.

v      Stainless steel segmented electrode.

v      Bare Roller System.

v      Easy view windows allow clear unobstructed view of corona discharge.

Technical Specifications

v      Treat width capacity : 1 meters to 3 meters.

v      Treater roll : 3- /4- diameter

v      Idler roll : 3- diameter

v      Maximum line speed : 80 to 120 meters per minute

v      Treat capability : One or two sides

v      Mains supply : 440 V,AC - 5 %,3 -

v      Mains frequency : 50 Hz - 5 %

v      Output frequency : 15 to 40 Khz

v      App. output power : 3 / 5 / 10 Kw

v      Electrode : Multisegment / Multiblade

v      Protection: over current/over voltage in microsecond tripping with fuse and MCB.  

Sheet / Bag To Bag Corona Treatment System: 

Single bag to bag SHEET TREATMENT system to treat the non continues sheet/bags/woven sacks for FLEXO-OFFSET-SCREEN-LAMINATION-COATING manual machines. Materials like, self locking bag, Metalised laminated cardboard, pvc, polyester sheet, hm/ld/ sheet, woven sack bags (laminated / unlaminated, reverse bags, paper, conductive / nonconductive dupblex etc. 

CORONA TREATMENT increase the Surface bonding strength by creating Polar molecule on the surface. As a result excellent bonding of inks takes place. On untreated Plastic and paper, inks adhere on the surface by means of mechanical friction & are easily released by rubbing or adhesive Tape test. It needs the Surface tension to the surface more than (10dynes/cm) the surface tension of the printing inks/adhesives, etc... for bonding, coating, printing etc.. 

Technical Specifications

v      Treat width capacity : 4" to 48 webs, Treater roll : 2"/3"

v      Idler roll : 2" / 3" diameter

v      Maximum line speed : 6 to 60 meter per minute.

v      Treat capability : One side

v      Mains supply : 230 V/440 V, AC - 5 %, 1 -.

v      Mains frequency : 50 Hz - 5 %

v      Output frequency : 15 to 25 Khz.

v      App. output power : 1/15/2 Kw.

v      Electrodes : INSULATED ROLL ELECTRODE

SALIENT FEATURES

v      Zero speed switch. Zero speed cut-off system, whenever silicon roller / motor speed comes down machine will automatically shut down, hence prevents the damage of silicon roller and increase the life of machine.

v      DC with motor with panel for Speed variation.

v      Audio-Visual alarm system

v      Ultra High Frequency

v      Compact design for comfortable to installation / operate / Quality

v      Soft Start.

v      Maximum Operator safety.

v      Treatment Roll with Silicon Sleeves.

v      High voltage side insulator on station for high voltage cable entry to avoid short circuit problem.

v      Digital indication of corona current.

v      Force cooled converter for longer life.

v      Fully enclosed treater station.  

Woven Sacks Treatment System:

APPLICATIONS 

1.       Roll to Roll TREATMENT SYSTEMS

2.       TREATMENT SYSTEMS FOR LAMINATION

3.       TREATMENT SYSTEMS FOR FLEXO PRINTING.

4.       TREATMENT SYSTEM FOR BOPP COATING 

CORONA TREATMENT SYSTEM FOR ROLL TO ROLL OPTIONAL FEATURES:  

1.       Pneumatic operated treater station using filtered air from 60-120 p.s.i. Cylinders are controlled by manual or electronic air valve with switch.

2.       Ozon extraction system efficiently remove ozone and to cool the electrode. This reduces warping of the electrode and provides more consistent treatment across the web. Increase the life of silicone sleeve. To protect the operator from excess ozone gas.

3.       Aluminium frame featuring stainless steel enclosure Station.

4.       In order to protect the treater rolls, zero speed switch automatically shuts down the output power , when the web reaches slow speed less than set speed.

5.       Stainless steel segmented electrode

6.       Bare Roller System.

7.       Easy view windows allow clear unobstructed view of corona discharge.  

Technical Specifications  

v      Treat width capacity :4 " to 48" webs.

v      Treater roll :2"/ 3- /4- diameter.

v      Idler roll : 2"/ 3- diameter.

v      Maximum line speed : 15 to120 meter per minute.

v      Treat capability : One or two sides.

v      Mains supply : 440V,AC - 5 %,1 -.

v      Mains frequency : 50 Hz - 5 %.

v      Output frequency : 15 to 25 Khz.

v      App. output power : 3/5/10 KW.

v      Electrodes: Multisegment / Multiblade.

SHEET FORM /BAG TO BAG TREATMENT SYSTEM  

APPLICATIONS 

1.       OFFSET PRINTING ( laminated metalised / non metalised cardboard / pvc sheet / polyester sheet / LD / LLDP / HM BAGS SHEETS. )

2.       MANUAL FLEXO PRINTING FOR WOVEN SACKS BAGS ( FERTILIZER, LAMINATED, REVERSE BAGS )

Technical Specifications  

v      Treat width capacity :4 " to 48" webs.

v      Treater roll :2"/ 3- /4- diameter.

v      Idler roll : 2"/ 3- diameter.

v      Maximum line speed : 6 to 60 meter per minute.

v      Treat capability : One or two sides.

v      Mains supply : 230 V,AC - 5 %,1 -.

v      Mains frequency : 50 Hz - 5 %.

v      Output frequency : 15 to 25 Khz.

v      App. output power : 1 / 1.5 / 2 Kw.

v      Electrodes: INSULATED ROLL ELECTRODE with motor hp .5/1/2/hp DC motor with panel for Speed variation Zero speed switch.

With or without belt conveyer for paper feeding Systems

Compact design for comfortable to installation / operate / Quality.

Reverse Corona Treatment: 

This is polymetal corona treater, the metalised polyester, aluminium foil, Laminated / non-laminated conductive or non conductive material, that we can treat. Reverse polarity of the electrode, the design of the structure may comfortable to treat the conductive materials.. 

The various models are available depends upon the width the of the materials and variety of the materials. Power of this machine like 1 kw to 10 kw models are available,  Width upto 3 meters models available. This is useful for Cap seal materials (Wads, toffee, chocolate, food packagings etc..) 

Assembly: 

v      Plug / Socket connections to electrodes.

v      Force cooled connector for longer life.

v      Multisegmented electrode facility for adjusting any width of the film.

v      Treatment Rolls with Silicon Sleeves.

v      Smooth To & Fro micrometric air gap adjustment facility.

v      High voltage side insulator on station for high voltage cable entry to avoid short circuit problem.

v      Fully enclosed treater. 

OPTIONAL FEATURES: 

1.       Pneumatic operated treater station using filtered air from 60-120 p.s.i. Cylinders are controlled by manual or electronic air valve with switch.

2.       Ozon extraction system efficiently remove ozone and to cool the electrode. This reduces warping of the electrode and provides more consistent treatment across the web. increase the life of silicone sleeve. To protect the operator from excess ozone gas.

3.       Aluminium frame featuring stainless steel enclosure station.

4.       In order to protect the treater rolls, zero speed switch automatically shuts down the output power, when the web reaches slow speed less than set speed.

5.       Stainless steel segmented electrode.

6.       Bare Roller system.

7.       Easy view windows allow clear unobstructed view of corona discharge. 

Technical Specification 

v      Treat width capacity : 4" to 48" webs.

v      Treater roll : 2" / 3" / 4" diameter.

v      Idler roll : 2" / 3" diameter.

v      Maximum line speed : 6 to 60 meter per minute.

v      Treat capability : One or two sides.

v      Mains supply : 230 V, AC - 5 %,1 -.

v      Mains frequency : 50 Hz - 5 %

v      Output frequency : 15 to 25 Khz.

v      App. Output power : 1 / 1.5 / 2 Kw.

v      Electrodes : Multisegment / Multiblade.