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Leona™ molding conditions

 

  Non ReinforcedNon Reinforced
Flame Retardant
GF ReinforcedGF Reinforced
Special PA66
Special CompositesReinforced
Flame Retardant
Grades

1300S
1302S
1402S
1500
1502S
1700S
1702
9400S
1442
1542

FR200 FR370
FR650

13G15
13G30
1300G
13G43
13G50

14G15
1402G
14G25
14G33
14G35
14G43
14G50

90G33
90G50
90G55
90G60
91G40
91G55
91G60
SG104
SG105
SG106
TR160
TR380
53G43
54G33
54G43
93G33
CR101
CR301
CR302
MR001
1330G
FG170
FG171
FG172
FG173
FH772
Predrying
Conditions*
(Hot air dryer)
Temp. (°C) 80-90 80-90 80-90 80-90 80-90 80-90 80-90 80-90 80-90
Time (hr.) 2-3 2-3 2-3 2-3 2-3 2-3 2-3 2-3 2-3
Molding
Conditions
Resin Temp. (°C) 270-290 250-260 265-275 275-295 275-295 280-300 270-290 275-295 270-280
Mold Temp. (°C) 75-85 75-85 75-85 75-85 85-95 100-120 75-85 75-85 75-85

* Supplied in hermetically sealed bags, Leona pellets do not require predrying if used immediately after unsealing. If not used soon after unsealing, however, the pellets will absorb considerable moisture from the air. To avoid silver streaking and other defects caused by moisture absorption, unsealed Leona pellets must be either stored in airtight metal containers or predried before molding.

Storing

To prevent moisture absorption, do not break the bag seal until just before use. Avoid bag breakage and keep product away from water. Do not return any spilled pellets to the bag.

Molding

Always process Leona under the recommended temperature range. Lower temperatures may lead to local degradation in properties due to nonuniform plasticization, while higher temperatures tend to cause silver streaking, other appearance problems, and resin decomposition. As the optimum temperature range varies among grades, read the guideline for each grade (available from Asahi Kasei). Ensure adequate local or general ventilation throughout molding operation. Detention of Leona in a non-operating, heated cylinder may cause resin decomposition. Before any extended suspension of molding operation, purge and charge the cylinder with non-colored polyethylene or a purging material designed for polyamide resins. Promptly remove and discard any spilled pellets from the work area to prevent slips and falls.

NOTE:
The information provided here is accurate to the best of our knowledge, based on all information and data available at this time, and is subject to change without notice. It is provided with no guarantee or assumption of liability whatsoever. It applies only to the normal handling and use of Leona as a molding material. Any other use or application would necessitate additional, special safety precautions, and is not recommended.

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