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.

Features of Corona Treatment Generator

  • High frequency generators are with IGBT technology
  • Force cooled convertor for longer life
  • Electronic Overload trip
  • Uniform treatment through out the web width
  • Can immediately switch over to full power, which reduces wastage
  • High voltage side insulator on station for high voltage cable entry to avoid short circuit problem

Features of Corona Treatment Station

  • Fully enclosed treater station
  • Aluminium split box type station assembly for light weight and low corrosion
  • Pneumatic operated treater station
  • Zero speed switch to protect silicon sleeve
  • Smooth to & fro micro metric air gap adjustment facility
  • Uniform treatment through out the web width
  • Multi segmented electrode
  • Smooth to & fro micro metric air gap adjustment facility
  • Dielectric sleeve of uniform thickness
  • Ozone extraction system efficiently remove ozone and to cool the electrode
  • Blown film extrusion single and multilayer for plastic film plants
  • Woven sack roll on- line Flexo printing machine.
  • Extrusion and lamination coating plant for paper industry
  • Sheet line plant
  • Plastic moulded articles
  • Woven sack roll on line flexo printing machine
  • Gum coating on PTFE coat fibre glass cloth
  • PVDC coating on PVC film for pharmaceutical applications
  • Ultra high frequency
  • Compact simple construction
  • Soft start
  • Low maintenance
  • Improved costs savings
  • Maximum operator safety
  • Easy to install
  • Accurate output power
  • Economical design
  • User friendly

Corona Treatment for Extrusion Coating Plant in Mumbai, Thane