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IR Sensors in extrusion coating

Plastic Sheet Extrusion

In plastic sheet extrusion production, polymers are melted through a slot or flat die (extruded) to form a thin, molten sheet. This sheet is is attracted towards the surface of a chilled roller where it immediately solidifies. The sheet then passes through a series of rollers which will determine thickness and texture before being edge trimmed and cut to the required size (heavy gauge sheet) or wound onto a roller (thin gauge sheet). Extruded plastic sheets are often used for thermoforming into a final shape (for example in the manufacture of refrigerator or freezer internal panels or plastic beverage cups).

  • At a Glance
  • Featured Solutions
Application Need 

Detection of die "bolt heater" problems is necessary to ensure uniformity of the die temperature, control roller temperatures and to detect film breakages.

Benefits to the customer 
  • Linescanner facilitates control of melt curtain temperature
  • Temperature measurement using spot sensor for downstream sheet temperature measurement optimizes final product quality
Infrared Temperature Solutions
  • Multiple linescanners connect via LAN to single PC using easy-to-configure software with integrated OPC and HTTP servers
  • Integrated laser sighting for ease of alignment
  • Spare field-replaceable window included with each linescanner (no calibration required)

Get more information about Fluke Process Instruments solutions for this application

 

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