BOPET Film Extrusion Line

USEON twin screw extruders are used in BOPET, BOPP and BOPA film production lines. Compared with a single screw extruder they give better dispersion, more output and less average energy consumption.

BOPET
BOPP
BOPA

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A/B/C co-extrusion: three extruders, one film

The core layer carries the output. Two smaller extruders add the skin layers, where the additives are compounded in.

Co-extrusion SAT95–SAT175–SAT95, the USEON large extruder line for BOPET film.

Line data	SAT95–SAT175–SAT95
Total output	5,000 kg/h
Film thickness	12–125 μm
Film width	7,500 mm
Max. line speed	400 m/min
Basic formula	PET compounding with additives: anti-slip, anti-static, anti-oxidant etc.
Application	All kinds of packaging

Co-extrusion combinations

Co-extrusion	Total output	Film width	Thickness	Line speed
2 × SAT40 + SAT110	1,000 kg/h	—	—	—
SAT75–SAT135–SAT75	3,000 kg/h	—	—	—
SAT95–SAT175–SAT95	5,000 kg/h	7,500 mm	12–125 μm	up to 400 m/min
SAT95–SAT175–SAT95delivered, see the reference below	up to 6,000 kg/h	8 m	12–75 μm	up to 350 m/min

Twin screw against single screw in a film line

A film line runs around the clock on one recipe for a long time. What the extruder saves per kilogram is what counts.

	Single screw extruder	USEON twin screw extruder
Before the extruder	Pre-crystallization and pre-drying system	Pre-drying-free technology
Vacuum	Cannot be equipped with a strong vacuum system without loss of output	High vacuum system; the PET melt is exposed to vacuum as long as possible

Better dispersion

Better dispersion performance leads to a lower percentage of additives.

Up to 35%

More output, less energy

Electricity saved against the traditional single screw process.

Flexible formula

The A/B/C film structure lets the formula be adjusted more flexibly, for more diversified products.

Closed-loop control

More user-friendly and intelligent closed-loop control.

IV drop, yellowing and residence time are the same questions as in PET recycling. They are answered on the main page.

PET Recycling: IV and the extruder

USEON large extruder SAT175 for BOPET film

The core-layer extruder of the large lines.

USEON large twin screw extruder for PET extrusion

175 mm

Screw diameter

1,120 kW

Main motor

Up to 4,000 kg/h

Output

Up to 45 t

Overall weight

Side vacuum extraction removes moisture and volatiles and keeps condensed liquid from flowing back into the molten plastic
Barrel with high precision temperature control
Modular screws with low surface roughness

SAT175 barrel with the twin screw shafts at the discharge end — SAT175 barrel, discharge end

SAT175 twin screw extruder in the workshop — SAT175 in the workshop

Barrel sections of the large extruder — Barrel sections

Base frame of the large extruder — Base frame

Reference · Shandong, China

BOPET production line with a maximum output of 6,000 kg/h

Max. output: 6,000 kg/h
Width: 8 m
Thickness: 12–75 μm
Line speed: up to 350 m/min

Extruders
One SAT175 and two SAT95 twin screw extruders as the main equipment, in an A/B/C film structure.
Raw material
No drying technology. It saves electricity and reduces production cost when producing large quantities.
Acceptance
Running steadily for 6 months, then passed the acceptance procedures.
Customer
The second BOPET line this film producer bought from USEON.

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