Processing Guides
Elastron Processing Guide for Extrusion
Elastron Processing Guide for Injection
Processing Temperature Range for ELASTRON V
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SHORE A 0-50
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SHORE A 50-90
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SHORE D 35-65
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INJECTION
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150 - 180° C
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160 – 190° C
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180 – 220° C
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EXTRUSION
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160 – 190° C
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170 – 200° C
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180 – 220° C
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* In injection moulding with cored moulds, temperature should be mostly between 40 - 60° C, injection moulding with standard moulds, temperature should be between 20 - 40° C.
* In extrusion process, mould temperature should be 5-10° C higher than nozzle temperature.
* Drying is required before processing.
* According to the design of screws used in machines, temperatures can vary +/- 10° C.
Processing Temperature Range for ELASTRON G
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SHORE A 0-50
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SHORE A 50-90
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SHORE D 35-65
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INJECTION
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150 - 180° C
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160 – 190° C
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180 – 220° C
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EXTRUSION
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160 – 190° C
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170 – 200° C
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180 – 220° C
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* In injection moulding with cored moulds, temperature should be mostly between 40 - 60° C, injection moulding with standard moulds, temperature should be between 20 - 40° C.
* In extrusion process, mould temperature should be 5-10° C higher than nozzle temperature.
* Drying is recommended for some grades and in some conditions before processing.
* According to the design of screws used in machines, temperatures can vary +/- 10° C.
Processing Temperature Range for ELASTRON D
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SHORE A 0-50
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SHORE A 50-90
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SHORE D 35-65
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INJECTION
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120 - 160° C
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140 – 180° C
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170 – 200° C
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EXTRUSION
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130 - 170°
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150 - 190°
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170 - 210°
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* In injection moulding with cored moulds, temperature should be mostly between 10° - 30° C, injection moulding with standard moulds temperature should be between 10° - 20° C.
* In extrusion process, mould temperature should be 5-10° C higher than nozzle temperature.
* Drying is not required before processing.
* According to the design of screws used in machines, temperatures can vary +/- 10° C.
Processing Temperature Range for ELASTRON TPO
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SHORE A 0-50
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SHORE A 50-90
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SHORE D 35-65
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INJECTION
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150 – 190° C
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170 – 200° C
|
180 – 220° C
|
|
EXTRUSION
|
160 – 200° C
|
180 – 210° C
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190 – 230° C
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* In injection moulding with cored moulds, temperature should be mostly between 10° - 30° C, injection moulding with standard moulds temperature should be between 10° - 20° C.
* In extrusion process, mould temperature should be 5-10° C higher than nozzle temperature.
* Drying is not required before processing.
* According to the design of screws used in machines, temperatures can vary +/- 10° C.
ELASTRON TROUBLESHOOTING GUIDE
I - ELASTRON INJECTION TROUBLESHOOTING GUIDE
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Problem
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Solution
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Flow Marks
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Dry the material at 90° C for 2 hours
Control the gas outlet in the mould
Increase injection speed step by step
Increase mould temperature
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Voids
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Dry the material at 90° C for 2 hours
Increase mould temperature
Open a degasing channel in unfilled area of the mould
Apply high pressure and low speed
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Burning
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Dry the material at 90° C for 2 hours
Reduce the speed of injection
Enlarge degasing unit outlets in the mould
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Sticking in mould
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Check cooling water temperature
Decrease mold temperature
Erode injection parts
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Sink Marks
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Increase back pressure
Increase injection pressure
Increase hold pressure and time
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Poor or no adhesion in co-injection
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Dry the material at 90° C for 2 hours
Adjust the melt temperature to max
Increase injection speed
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Odour and yellowing
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Dry the material at 90° C for 2 hours
Decrease back-pressure
Adjust the melt temperature to min
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II - ELASTRON EXTRUSION TROUBLESHOOTING GUIDE
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Problem
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Solution
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Dull / matt surface
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Increase head/die temperature
Increase melt temperature
Increase compression ratio
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Low output
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Increase screw speed
Decrease compression ratio
Dry the material at 90° C for 2 hours
Decrease screen pack
Increase head/die temperature
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Poor or no adhesion in co-extrusion
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Increase melt temperature
Increase die compression
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III - ELASTRON BLOW MOULDING TROUBLESHOOTING GUIDE
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Problem
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Solution
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Rough surface
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Increase cylinder temperatures
Increase head/die temperatures
Decrease extrusion speed
Increase mould temperature
Decrease hooper side temperature
Use higher compression screws
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Blow parts with unmelt particles
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Increase cylinder temperatures
Increase head/die temperatures
Decrease extrusion speed
Increase back pressure
Use higher compression screws
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Blow problems
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Dry the material at 90° C for 2 hours
Dry regrind
Increase or decrease back pressure
Increase parison wall thickness
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Unstable parison
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Decrease cylinder temperature
Decrease head/die temperatures
Clean the die
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Parison is running to one side
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Decrease cylinder temperature
Decrease head/die temperatures
Clean the die
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Flashing
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Decrease melt temperature
Decrease blow pressure
Increase clamp force
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Contamination in parison/part
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Purge to remove degraded material
Decrease the barrel/head temperature
Reduce cycle time
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Weld Lines
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Increase melt temperature
Increase die temperature
Clean head and die
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