| EXTRUSION | ||||||||
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APPLICATION AND MATERIAL |
(All Temperatures in oC and pressure in Atmospheres 1) 1. Multiply by 15 to get approximate PSI 2. Some new systems run at high speed at over 200 oC 3. Positive Displacement pump in high head provides very constant feed to die |
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EXTRUDER (hp) |
EXTRUDER BARREL (in./mm) |
BARREL REAR TEMPERATURE (oC) |
BARREL FRONT TEMPERATURE (oC) |
DIE TEMPERATURE (oC) |
TYPICAL PRESSURE |
TYPICAL MATERIAL TEMPERATURE (oC) |
SOME TYPICAL TAKE-OFF CONDITIONS |
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PIPE |
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Polyethylene |
40 |
3½ / 90 |
150 |
160 |
165 |
100 |
165 |
Cooling Water Room Temperature or Less |
|
Rigid PVC |
50 |
3½ / 90 |
140 |
160 |
170 |
175 |
175 |
Cooling Water Room Temperature or Less |
|
ABS |
50 |
3½ / 90 |
170 |
195 |
200 |
175 |
200 |
Cooling Water Room Temperature or Less |
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SHEET |
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Polystyrene |
100 |
4½ / 120 |
180 |
200 |
210 |
70 |
210 |
Rolls – 50-90o, Depends on Rate |
|
Linear Polyethylene |
100 |
4½ / 120 |
230 |
205 |
200 |
175 |
220 |
Rolls – 70-125o, Depends on Rate |
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FILM |
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Tubular Polyethylene |
40 |
3½ / 90 |
150 |
160 |
165 |
100 |
165 |
Blow-up Ratio 2:1 |
|
Flat Polyethylene |
40 |
3½ / 90 |
200 |
240 |
250 |
65 |
250 |
Chill Roll – 50o, Gap ½ inch (12mm) |
|
Rigid PVC |
25 |
2½ / 60 |
140 |
160 |
170 |
150 |
175 |
Horizontal Tubular Bubble |
|
Plasticized PVC |
50 |
3½ / 90 |
140 |
170 |
175 |
100 |
180 |
Vertical Tubular Bubble, Blow Ratio 2½ : 1 |
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COATING |
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Polyethylene |
100 |
4½ / 120 |
250 |
315 |
325 |
75 |
320 |
Preheat Substrate 100o Chill Roll 50o |
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WIRE |
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Polyethylene |
50 |
3½ / 90 |
220 |
240 |
240 |
200 |
240 |
Preheat Copper 150o, Water Baths 70o 40o 15o |
|
Plasticized PVC |
25 |
2½ / 60 |
130 |
165 |
170 |
100 |
170 |
Preheat Copper 150o, Water Baths 20o |
|
Nylon |
15 |
2 / 45 |
260 |
295 |
300 |
60 |
300 |
Preheat Copper 150o, Water Baths 70o 20o |
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MONOFILAMENTS |
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Polypropylene |
25 |
2½ / 60 |
190 |
240 |
250 |
3 |
125 |
Quench 50o, Air Oven 200o |
|
Nylon |
25 |
2½ / 60 |
260 |
290 |
300 |
3 |
300 |
Quench 90o, Air Oven 260o |
|
Polystyrene |
20 |
2½ / 60 |
180 |
205 |
210 |
100 |
210 |
No Quench, Glycol Bath 125o |
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CONTOURS |
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Polystyrene |
20 |
2½ / 60 |
175 |
200 |
205 |
100 |
200 |
Flame-Polish with 400o Flame. Air-Cool if no polishing |
|
Rigid PVC |
25 |
2½ / 60 |
140 |
165 |
170 |
175 |
170 |
Vacuum Sleeve cooled with Tap Water |
|
Plasticized PVC |
20 |
2½ / 60 |
140 |
165 |
165 |
75 |
165 |
Flame-Polish with 400o Flame. Water Bath at Room Temperature |