Usage：
It is used to blowing the various PE thermal shrinkable membranes (heat shrinkable packaging film), is a kind of film which is applied extensively to package outside of food, medicine, beer bottle, material bottle, box, case, cloth reel, floor, glass, all sizes of trays, pottery, tissue, etc.
Characteristic：
1) Main motor and take-up motor are controlled by frequency inverter adjustment.
2) Material of screw and barrel: 38CrMoAlA Polished with Nitride Treatment
Hardness of heat treatment: Screw HV≥ 740, barrel HV≥ 900
Depth of hardening: 0.6-0.7mm
Brittleness grade: ≤ 2 grade
3) Gear box: 250 Involutes cylinder Bevel wheel, cast alloy steel piston, fine grinding hard gear surface
4) Die material: Steel 45#/surface treatment of flow channel: Hard chrome- plating
5) Double digital display temperature controller
Main techncal vriables
| Model | SJ-50 | SJ-55 | SJ-60 | SJ-65 | SJ-80 |
| Width(mm) | 600 | 800 | 1000 | 1200 | 1500 |
| Output(kg) | 25-35 | 35-50 | 50-75 | 50-80 | 80-120 |
| Main power(kw) | 7.5-11 | 11-15 | 15-18.5 | 18.5-22 | 30-37 |
| Total power(kw) | 22 | 26 | 30 | 36 | 46 |
| Screw Dia (mm) | 50 | 55 | 60 | 65 | 80 |
| L/D ratio of screw | 28: 1 | 28: 1 | 28: 1 | 28: 1 | 28: 1 |
| Screw Speed | 10-100 | 10-100 | 10-100 | 10-100 | 10-100 |
| Film thickness | 0.01-0.10 | 0.01-0.10 | 0.01-0.10 | 0.01-0.10 | 0.01-0.10 |
| Weight(kg) | 2000 | 2300 | 800 | 3300 | 4300 |
| Dimensions(m) | 4.0*1.8*3.6 | 4.2*2.2*4.0 | 4.6*2.3*4.2 | 4.8*2.5*4.5 | 5.2*2.8*5.0 |
Control cabinet
1) Temperature of screw automatically controlled ( 4 zones)
2) Independent switches controls including amp, rpm and m/min meters for the whole machine
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