<Heat-resistant and high-durability
grades:TE-7003,TE-8303,TE-8003G30,TE-8005M,TE-8005MT9>
| Cylinder temperature (°C) |
Limit
temperature (°C) |
Mold temperature (°C)
(actual surface temperature) |
Back pressure
(kgf/cm2)
(gauge pressure) |
Nozzle |
Front |
Middle |
Rear |
190~210 |
190~210 |
180~200 |
150~170 |
240 |
100~110 |
5~15 |
* Use oils, pressurized water, heater, or others
to control the mold temperature, and make sure to keep the mold temperature
(actual surface temperature) in the range of 100 to 110°C. The temperature
control is very important for providing the molded products with higher
crystallinity and greater heat resistance.
<Alloy grades:TDA-8070M,TAA-8070,TCA-8070MN>
| |
Cylinder temperature (°C) |
Limit
temperature (°C) |
Mold temperature (°C)
(actual surface temperature) |
Back pressure
(kgf/cm2)
(gauge pressure) |
| |
Nozzle |
Front |
Middle |
Rear |
| TDA-8070M |
200~230 |
200~230 |
200~220 |
190~210 |
250 |
50~70 |
5~15 |
| TAA-8070 |
210~230 |
200~220 |
200~220 |
190~210 |
250 |
50~70 |
5~15 |
| TCA-8070MN |
210~230 |
210~230 |
200~220 |
200~220 |
255 |
40~70 |
5~15 |
Extrusion molding conditions
| <Extrusion grades:TP-4000,TP-4030> |
|
Cylinder temperature(°C) |
Limit
temperature
(°C) |
Coolant
temperature
(°C) |
Distance
between
die and
sizer (cm) |
Drawdown
rate |
Sizing
method |
|
Die |
Meter |
Compressor |
Supplier |
|
150~180 |
160~200 |
160~200 |
150~180 |
240 |
8~15 |
2~5 |
0.87~0.92 |
Dry
vacuum |
* The above conditions are determined with reference
to specified contour extrusion molding. Depending on the shape of an extruder
and extruded article, the conditions may change considerably.
Foam sheet molding conditions
| <Foam sheet grades:HV-6250H> |
Foam
extrusion molding conditions |
| Cylinder temperature(°C) |
Cooling zone temperature(°C) |
Die temperature(°C) |
|
Front |
Middle |
Rear |
190~220 |
190~230 |
180~200 |
170~200 |
150~180 |
Vacuum
and pressure molding conditions |
|
Pre-heater
temperature(°C) |
Sheet temperature
(°C) |
Pre-heating time
(second)
|
Pressing time
(second)
|
Die temperature
(°C) |
150~280 |
80~140 |
4~16 |
4~16 |
20~120 |
* The above conditions are determined with reference
to foam sheet molding using CO2 gas. Depending on the type and amount
of a foaming agent, the conditions may change considerably.
Increasing the die temperature to 110°C or higher allows crystallization
in the molding process.
Molded articles fully crystallized are resistant to heat of 100°C
or higher. In this case, longer pressing time improves crystallization.
|
<Other precautions>
Ο Prevention of moisture absorption during molding
TERRAMAC resins are delivered as dried and packed in
an aluminum moisture-proof bag. However after unpacked, the resins may
absorb moisture, leading to decrease in the molecular weight of resins during molding. Accordingly, use hopper driers for prevention of moisture absorption during molding.
To stabilize molding conditions, use of a dehumidifying drier is recommended. Use up all the material contained in a bag, transfer the remaining material to a moisture-proof can, or fold and seal the opening of the bag with
a tape.
Ο Drying
The resins left unpacked
may contain water by absorbing moisture. Re-dry these resins.
| TE-1030, TE-1070,TP-4030: Use
a dehumidifying drier at 80°C for 5 hours or more |
| TE-2000, TE-7003, TE-8303, TE-8003G30, TE-8005M, TE-8005MT9, TP-4000, HV-6250H :At 100°C for
5 hours or more |
| (use of a dehumidifying
drier is recommended) |
Ο Recycling use of sprues, runners, and
the like
Sprues and runners should also be dried, except they
are processed inline.
Dry these resins under the following drying conditions.
| TE-2000, TE-1030, TE-1070: Use
a dehumidifying drier, at 70°C for 8 hours or more |
| * Recycled material,
including molded products, sprues, and runners of the above grades,
are resistant to heat of approx. 60°C. Thus, the blocking phenomenon
is expected during drying. Mix virgin pellets and recycled material,
then dry them. |
TE-7003, TE-8303, TE-8003G30, TE-8005M, TE-8005MT9: At 100°C for 8 hours or more
(Use of a dehumidifying drier is recommended.) |
* Recycled material molded at the recommended die temperature has heat resistance. Thus,the above remarks for the basic and shock-resistant grades need not be followed.
In any case, automatic return in molding is recommended. |
<Precautions about this information>
• The data above are typical values of test pieces determined by
our tests, and do not guarantee the properties of resins in a particular
application.
• In applying your products to individual applications, take into
account legal regulations, industrial property rights, product specifications,
your own self-imposed standards, and the like, and make sure to confirm
the properties of your products by conducting product tests according
to the purpose of your use.
• The data and descriptions above are prepared on the basis of the
documents, information, and data currently available, and may subject
to change without prior notice based on new findings.
• Read carefully the material safety data sheets (MSDS) of the resins
in advance to handling.
• Contact us in advance, if you wish to use these resins in particular
applications, such as medical devices, containers or packaging of foods,
kid's playthings, and others.
|
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