Corona Treater for Extrusion Coating Plant
High Frequency Corona Panel
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 Treaterd 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 Treater for Extrusion Coating Plant :
- Ozone extraction system efficiently removes ozone and to cool the electrodes. This reduces warping of electrode and provides more consistent.
- Aluminium Split box type station assembly for light weight and low corrosion.
- Advanced IGBT Technology.
- Pnuematic operated treatment station.
- 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.
- Cost efficient treatment process.
- Easy to install.
- Easy to maintain.
- Easy to Operate Push Buttons for Start/Stop
- Easy view windows allow clear unobstructed view of corona discharge.
- Air gap adjustment: two external adjustment screws at both ends of the electrodes.
- Customized Design.
Benefits of Corona Treater for Extrusion Coating Plant :
- Compact simple contruction
- Soft start
- Ultra high frequency using latest IGBT technology
- Forced cooled convertor for longer life
- Maximum Operator safety
Electronic Protection Features of Corona Treater for Extrusion Coating Plant :
- Thermal trip for heatsink
- Overload Trip
- Under voltage / Over voltage
- MCB protection
- Single Phasing
- Ozone extraction overload trip
- Audio / visual alarm
- Door open