Five-Layer Polyolefin-Dedicated Film Line | Plastics Technology

Five-layer line suited to handle PCR.

The new Polyblown 5-layer POD (polyolefin dedicated) series from Colines is designed for the production of polyolefin films and suitable for processing PCR. The production line has been recently redesigned and optimized, and during the last week of July, was showcased during an event for some selected customers.

Colines says the line is extremely energy efficient, pointing to low specific energy consumption rates that range from 0.32 to 0.38 kWh/kg (depending on the formulations).

Other notable features of the line include a user-friendly graphical interface of the software; excellent control of film tension and winding speed, achieved with the use of brushless motors; a sturdy, ergonomically friendly design; extremely low thickness tolerances; and high production capacities. The line is supplied with four extruders equipped with liquid-cooled motors; a 500-mm coextrusion die; a dual-flow air ring; internal bubble cooling; a capacitive non-contact film-thickness sensor; primary and secondary bubble-cage and collapsing frames with carbon fiber rollers; an embedded oscillating takeoff; additional secondary nip; and a new surface/gap/center winder. The line can run at a maximum width of 270 mm.

Photo: Colines

During the customer event, the following films (highly rich metallocene formulations) were produced:

Lamination Film

Silo Bags

Agristretch Film

Collation Shrink Film

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