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Increase capacity of Blown film Extruders

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Topic: Increase capacity of Blown film Extruders

Subroto Banerji
Member

Posts: 1
From:Malaysia
Registered: Jun 2003

posted June 27, 2003 03:23 AM

We have 55 mm & 50 mm extruders making plastic shopping and want to increase the capacity of the lines. Require guidance on the alternatives in hardware and material blends to use.

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Bob Cunningham
Senior Member

Posts: 46
From:Amesbury, Mass
Registered: Nov 2002

posted June 27, 2003 07:51 AM

Generally speaking, to increase rate on a blown film line, there are several options, such as:

- Increase cooling of the bubble
- Increase the melt strength (high viscosity polymers or colder melt)
- Larger die size

What is restricting your throughput now- bubble stability, extruder speed, etc.? Some more information would greatly assist.

-Bob Cunningham

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