Extrusion Coating Plant

Corona Treatment for Extrusion Coating Plant

Corona treater on blown film or cast film extrusion lines is essential in order to obtain a perfect surface tension prior to the following converting process. Without pretreatment the extruded substrates will not allow further converting processes due to low surface tension.

Corona treatment is required on Extrusion coating/Lamination plant For better adhesion of thin layer of polyolefin's (Mainly LDPE / PP) on substrates like Paper, Cotton Cloth, Woven fabrics, Jute fabric, Aluminum foil, BOPP film, Polyester film, etc. Paper, Cotton Cloth, Woven fabrics, Jute fabric, Aluminum foil, BOPP film, Polyester film, etc has to be corona treated before coating to achieve better bonding.

Corona treatment system is a very effective way to increase the surface tension of virtually any material. Surface treatment is required for woven fabrics whose normal surface tension is not sufficiently high to permit good wetting , corona treatment increases bonding. Corona treaters increase the surface energy of films, foils, and paper to improve wettability and adhesion of inks, coatings and adhesives. Film extruders use corona treaters to increase a film’s surface energy at the time of extrusion. This pretreatment process enables the film to be later converted by printers, coaters & laminators.

Specifications :
Mains Supply / Mains Frequency 415 V AC, ± 5 % , 3 Ø ,4 -Wire
Treatment size 700-1800 mm
Line speed 80-120 meter/min
Material PAPER / LDPE
Treating sides Single
Input frequency 50 Hz
Output frequency 20-50 KHZ
Approx Output power (Kw) 3-5 KW
Maximum temperature 0 ~ 50°C
Blower 3 H.P
Treatment electrode Multisegmented
Dynes level 38-48 Dynes/cm
Length of HV cable 2.5 Mtr
Inverter Ultra high frequency using latest IGBT technology
Corona output Constant at same speed
No influence of supply voltage
Accurate output power
Certifications CE, RoHs, ISO
  • Advanced IGBT Technology.
  • Aluminium Split box type station assembly for light weight and low corrosion.
  • Pnuematic operated treatment station.
  • Ozone extraction system efficiently removes ozone and to cool the electrodes. This reduces warping of electrode and provides more consistent.
  • In order to protect the treater rolls, a zero speed cut-off system automatically shuts down the power supply when the web achieves low line speeds.
  • Easy to install.
  • Cost efficient treatment process.
  • Easy to maintain.
  • Easy to Operate Push Buttons for Start/Stop
  • Customized Design.
  • Easy view windows allow clear unobstructed view of corona discharge.
  • Air gap adjustment: two external adjustment screws at both ends of the electrodes.
  • Ultra high frequency using latest IGBT technology
  • Compact simple contruction
  • Soft start
  • Maximum Operator safety
  • Forced cooled convertor for longer life
  • Overload Trip
  • Thermal trip for heatsink
  • MCB protection
  • Under voltage / Over voltage
  • Ozone extraction overload trip
  • Single Phasing
  • Door open
  • Audio / visual alarm

Corona Treatment for Extrusion Coating Plant in Mumbai, Thane