PT ZONE: Film Extrusion

Try a ‘Complete’ Method to Clean Screws, Barrels
Pulling the screw will give you direct access to clean all surfaces. Here’s how to do so in an efficient, safe, and non-destructive way. More (+)
A Film Processor’s Guide to Understanding Materials & Equipment
Process engineers need to have a fundamental understanding of three areas: the material properties, the basic design parameters of the extrusion equipment, and the process window of the equipment. More (+)


MOST RECENT CONTENT: Film Extrusion

Uway Builds, Displaying Huge HDPE Sheet Line at Ohio Open House

Sheet builder offering by-appointment open house during month of February

2015 Highlights in Extrusion

  Extrusion has often been called a process where technology advances are more evolutionary, then revolutionary.

Are You Ready to Take on the World?

Plastics Technology’s exclusive benchmarking study reveals the tactics of processors who just might be in that class.

Top of the Class: Meet 2015’s World-Class Processors

Plastics Technology’s inaugural group of World-Class Processors—selected through an exclusive benchmarking survey—spans geographies, markets, processes, and materials. Diverse in size and capabilities, these companies have one key trait in common: efficiency. How do you stack up in comparison?

EXTRUSION: Direct Extrusion System For Sheet, Film

Line available for trials at Leistritz lab.

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OVERVIEW:
Film Extrusion

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Film is divided into two subcategories: cast, or flat film; and blown film. In the former, hot plastic is extruded through a flat, slit die onto a polished chill roll where it is quenched, pulled to a second set of rolls to cool the other side, then wound. In blown film, plastic is extruded into a cylindrical die, then inflated to form a bubble, which is ultimately cooled and collapsed. Films can be either single or multi-layer. Most are based on polyethylene. Bags are one primary example of film extrusions.


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» Blending & Dosing

Is dosing good enough? Do I need a Blender? Let Maguire walk you through the basics, process integration and more.

 

» Plastics Conveying

Watch video, download datasheets and more in the Plastics Conveying Knowledge Center.

» Plastics Drying

Novatec shares their knowledge of dryers and drying techniques.

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