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Xyron™ molding conditions

 

PPE/PS

Non-Reinforced, Non Flame Retardant
Grades 200H 300H 400H
500H
600H 1000H
Predrying
Conditions
Temp.(°C) 80~90 90~100 90~100 90~100 100~120
Time(Hr) 2~4 2~4 2~4 2~4 2~4
Molding
Conditions
Resin Temp.
(°C)
220~270 240~280 240~290 250~300 280~320
Mold Temp.
(°C)
40~70 50~80 50~80 60~90 80~120
Non-Reinforced, Flame Retardant
Grades 1950J
1951J
100V
100Z
240W
240V
240Z
340W
340V
340Z
440Z PV40Z
Predrying
Conditions
Temp.(°C) 70~80 70~80 80~90 90~100 90~100 90~100
Time(Hr) 2~4 2~4 2~4 2~4 2~4 2~4
Molding
Conditions
Resin Temp.
(°C)
220~280 220~270 220~270 240~280 240~290 290~320
Mold Temp.
(°C)
40~70 40~70 40~70 50~80 50~80 60~100
Non-Reinforced, Flame Retardant
Grades 540V
540Z
640V
640Z
644Z 740V SZ800
Predrying
Conditions
Temp.(°C) 90~100 90~100 90~100 90~100 100~120
Time(Hr) 2~4 2~4 2~4 2~4 2~4
Molding
Conditions
Resin Temp.
(°C)
240~300 250~320 260~320 250~320 280~320
Mold Temp.
(°C)
50~80 60~90 60~100 60~100 80~120
Glass FiberHigh-Stiffness, Low-Warp, High-Flow
Grades G701H
G702H
G703H
G701V
G702V
G703V
L542V/L542Z
L543V/L543Z
X1744/L544V
L554V/L564V
L564Z/L574Z
L565V L654V
Predrying
Conditions
Temp.(°C) 90~100 90~100 90~100 100~110
Time(Hr) 2~4 2~4 2~4 2~4
Molding
Conditions
Resin Temp.
(°C)
260~300 250~300 260~310 270~310
Mold Temp.
(°C)
60~100 70~90 60~100 60~120
High-Stiffness, Low-Warp
Grades X444H X331V
X332V
X1561 X531V
X531Z
Predrying
Conditions
Temp.(°C) 90~100 90~100 90~100 90~100
Time(Hr) 2~4 2~4 2~4 2~4
Molding
Conditions
Resin Temp.
(°C)
250~300 240~300 240~280 250~300
Mold Temp.
(°C)
60~90 50~80 60~90 70~90
High-Stiffness, Ultra Low-Warp
Grades X304H
X404H
L524V
X1712
X604H X1509
X1508
X603V
Predrying
Conditions
Temp.(°C) 90~100 90~100 90~100 90~100
Time(Hr) 2~4 2~4 2~4 2~4
Molding
Conditions
Resin Temp.
(°C)
250~300 260~300 240~300 270~310
Mold Temp.
(°C)
60~90 60~100 50~80 70~100
Good Appearance
Low-Warp
Electroconductive
High-Stiffness
Carbon Fiber
Grades X352H
X351V
X352V
X552H
X551V
X552V
X8610 X8401
Predrying
Conditions
Temp.(°C) 100~110 100~110 90~100 90~100
Time(Hr) 3~4 3~4 2~4 2~4
Molding
Conditions
Resin Temp.
(°C)
240~300 250~300 250~300 250~300
Mold Temp.
(°C)
50~80 70~90 60~90 60~90
Acoustic Damping
Grades VN30V VT31V
VT31Z
Predrying
Conditions
Temp.(°C) 90~100 100~110
Time(Hr) 2~4 3~4
Molding
Conditions
Resin Temp.
(°C)
250~290 250~290
Mold Temp.
(°C)
50~80 50~80
PA/PPE
Grades A0210
AT600
AT610
AT602
AG511
AG512
AG211
AG213
Predrying
Conditions
Temp.(°C) 110~130 100~130 110~130
Time(Hr) 2~3 3~4 2~4
Molding
Conditions
Resin Temp.
(°C)
280~300 260~300 280~300
Mold Temp.
(°C)
60~120 60~120 60~120
PP/PPEPPS/PPE
Grades EV103 T0702 TT520 DG235
DG141
DV166
Predrying
Conditions
Temp.(°C) 80~90 90~100 100~110 120
Time(Hr) 1~2 2~4 3~4 3~4
Molding
Conditions
Resin Temp.
(°C)
230~260 250~290 250~280 300~330
Mold Temp.
(°C)
50~70 50~90 50~90 90~130

Molding

Pre-drying

Modified PPE has the lowest moisture absorption of any engineering plastic and displays excellent hydrolysis resistance. To help ensure against surface appearance faults such as silver streaks, it is nonetheless good practice to predry the material. For applications where surface appearance is critical, always be sure to predry the material. When using a PPE/PA grade, predrying is especially important due to the high moisture absorption properties of PA.

Predrying should be done at the proper temperature range specified for each grade. A closed loop dehumidifying/drying hopper system is the most efficient equipment for predrying Xyron. When using hot-air circulating ovens, Xyron pellets will be efficiently predried when spread out in trays at a uniform depth of 20 to 30 mm.

Take care to ensure that Xyron is not predried for longer than 8 hours. Excessive predrying may result in degradation of physical properties and color changes.

Regrind

Properly molded Xyron (sprues, runners, molded articles, etc.) may be reground, dried, and remolded without adverse effects. It is essential that material to be reground be free from oil, grease, dirt, and foreign substances, and shows no signs of degradation. Regrind levels up to 20% can be used successfully, but it is not advisable to use reground material for applications where surface appearances are critical.

Purging

High viscosity GPPS and Asaclean SA™ (available from Asahi Kasei Corporation and distributors) are recommended purging materials for all Xyron grades. Purging should be performed at temperature ranges appropriate for each grade.

Downtime

In order to prevent polymer degradation when molding operation is stopped or interrupted, the following measures are recommended.

  • Up to 30 minutes:
    Maintain cylinder temperature. Purge barrel using same material prior to the re-start of molding operation.
  • From 30 minutes to 12 hours:
    Decrease cylinder temperature to 200・20°C. Purge barrel using high viscosity GPPS. Upon commencement of molding operation, Purge barrel using material for molding after increasing cylinder temperature to the required level.
  • For downtime longer than 12 hours:
    Purge barrel with high viscosity GPPS, and shut down machine.

Mold release

Generally, mold release agents are not required for molding Xyron resins. In cases where mold release agents are needed due to the complex shape of the mold, minimal use is recommended. Silicone-based mold release agents such as Pelicoat B™ (manufactured and sold by Chyukyo Kasei Kogyo Ltd., Japan) are recommended, as the chemical ingredients do not react with Xyron.
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 Xyron as a molding material. Any other use or application would necessitate additional, special safety precautions, and is not recommended.

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