3-Layer Co-extrusion Haul-Off Rotary Film Blowing Equipment

Configuration of equipment and main technical parameter

Extruding machine

Three SJ45/30 extruders

1.Screw rod skin hardness:HRC56-60

2.Cylinder skin hardness:HRC60-62

3.Screw diameter: Φ45mm, L/D rate:30:1

4.Screw speed:15-120rpm.

5.maximum output for an  extruder:70Kg/h(SJ45/30)

6.Cylinder thermal rating: Approximately 11Kw.

7.Cylinder heating section:3 section

8.Cylinder coolant conditions: Ultra warm automatic forced-air cooling, feeding section water-cooling

()3-layer co-extrusion cooling mold and air-ring

1.Mould specification: Φ250mm

2.Mouthpiece clearance: 2.3mm

3.Mould material:40Cr

4.Heating method: stainless steel heating ring.

5.Heating power:about 15Kw

6.Section of temperature control:4 sections

7.New type cooling air-ring:double negative pressure air-ring

Blowing film auxiliary:include haul-off auxiliary and winder auxiliary

1.      Haul-off auxiliary:3-layer frame

2.      Winder:double friction passive wind,AB winder adjustable

3.      EPS photoelecron correct error control system.

4.       Tensility closed ring control system