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1) An example of processing conditions for a multilayer sheet by co-extrusion in combination with polyproylene is shown in Table-1. |
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Table-1. Processing conditions for Nylon-MXD6/PP co-extruded
sheet in coextrusion blow molded bottles.
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Items |
Unit |
Nylon-MXD6 |
PP |
Adhesive |
| resin |
grade |
g/10min |
6121 |
K7011 |
QF305 |
| MI |
0.5 |
0.8 |
1.5 |
| extruder |
D |
mm |
40 |
45 |
30 |
| screw |
L/D |
|
28 |
27 |
34 |
| type |
full flight |
full flight |
full flight |
compression
ratio |
3.4 |
3.1 |
3.1 |
cylinder
temp. |
C1 |
°C |
270 |
200 |
210 |
| C2 |
275 |
230 |
240 |
| C3 |
275 |
250 |
250 |
| C4 |
|
250 |
|
| C5 |
|
255 |
|
| head |
270 |
245 |
240 |
| adaptor |
270 |
245 |
240 |
| feedblock temp. |
°C |
265 |
T-die
temp. |
D1 |
°C |
265 |
| D2 |
265 |
| D3 |
265 |
| D4 |
265 |
| D5 |
265 |
| D6 |
265 |
| chill roll temp. |
°C |
20~40 |
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K7011 : Chisso "Chisso polypro"
QF305 : Mitsui petrochemical "Admer" |
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2) An example of processing conditions for co-extrusion blow molding in combination with HDPE is show in the following (Table-2).
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Items |
Unit |
Nylon-MXD6 |
HDPE |
Adhesive |
| resin |
grade |
g/10min |
6121 |
E803 |
L6100M |
| MI |
0.5 |
0.3 |
1.0 |
| extruder |
D |
mm |
30 |
40 |
30 |
| screw |
L/D |
|
24 |
24 |
24 |
| type |
full flight |
full flight |
full flight |
compression
ratio |
2.4 |
2.75 |
3.0 |
cylinder
temp. |
C1 |
°C |
270 |
220 |
220 |
| C2 |
275 |
225 |
225 |
| C3 |
275 |
235 |
235 |
| head |
275 |
235 |
235 |
| adaptor |
|
235 |
235 |
Die
temp. |
D1 |
°C |
230 |
| D2 |
250 |
| D3 |
260 |
| D4 |
250 |
| D5 |
230 |
| D6 |
220 |
| blow air pressure |
kg/cm2 |
4.5 |
| blow air time |
sec |
20 |
| chill roll temp. |
°C |
20~40 |
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E803 : Nippon petrochemicals "Nisseki Staflene"
L6100M : Nippon petrochemicals "Nisseki N-polymer" |
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