The most comprehensive injection molding technical parameters in history
Time：2024-12-19 08:11:28 / Popularity： / Source：
PMMA injection molding technical parameters
| Drying temperature (℃) | 80 | Drying time (hr) | 2~3 |
| Mold temperature (℃) | 40~70 | Residual material (mm) | 2~6 |
| Melt temperature (℃) | 215~240 | Back pressure (MPa) | 13~28 (higher) |
| Injection pressure (MPa) | 100~170 | Clamping force (ton/in2) | 4 |
| Injection speed | Low speed | Feedback speed (rpm) | 60~80 |
| Screw type | Standard screw (if a larger injection pressure is required, a small screw can be used) | ||
| Stop processing | PP material needs to be used for cleaning | Crushed material reuse (%) | 0 |
PE injection molding technical parameters
| Drying temperature (℃) | 65～75 | Drying time (hr) | 0.5 (no drying required) |
| Mold temperature (℃) | 40～70 | Residue (mm) | 3～10 |
| Melt temperature (℃) | 180～220 | Back pressure (MPa) | 7～18 |
| Injection pressure (MPa) | 80～130 | Clamping force (ton/in2) | 2 |
| Injection speed | Medium | Feedback speed (rpm) | 60～100 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close gate and clean with injection machine | Recycling of broken materials (%) | 20～40 |
PP injection molding technical parameters
| Drying temperature (℃) | 65～75 | Drying time (hr) | 0.5～1 |
| Mold temperature (℃) | 35～65 | Residue (mm) | 3～10 |
| Melt temperature (℃) | 200～250 | Back pressure (MPa) | 9-17 |
| Injection pressure (MPa) | 80-130 | Clamping force (ton/in2) | 2 |
| Injection speed | Medium | Feedback speed (rpm) | 60-90 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close gate and clean with injection machine | Recycling of broken materials (%) | 15-30 |
PPS injection molding technical parameters
| Drying temperature (℃) | 120-130 | Drying time (hr) | 2-3 |
| Mold temperature (℃) | 85-140(with insulation board) | Residual material (mm) | 3-10 |
| Melt temperature (℃) | 300-340 | Back pressure (MPa) | 5-12 |
| Injection pressure (MPa) | 100-150 | Clamping force (ton/in2) | 4-5 |
| Injection speed | Medium to high speed | Feeding speed (rpm) | 60～80 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close gate and clean with injection machine. | Recycling of broken materials (%) | 20～30 |
PC/ABS injection molding technical parameters
| Drying temperature (℃) | 80 | Drying time (hr) | 2～3 |
| Mold temperature (℃) | 60～80 | Residual material (mm) | 3～6 |
| Melting temperature (℃) | 250～280 | Back pressure (MPa) | 5～12 |
| Injection pressure (MPa) | 80～140 | Clamping force (ton/in2) | 3～4 |
| Injection speed | Medium speed | Feeding speed (rpm) | 60～90 |
| Screw type | Standard screw diameter is 50mm. It is better to use a screw with a low compression ratio for large screws | ||
| Stop processing | Close gate, cool down and clean with injection machine. | Recycling of broken materials (%) | 10～25 |
PBT injection molding technical parameters
| Drying temperature (℃) | 110～120 | Drying time (hr) | 2～3 |
| Mold temperature (℃) | 50～75 | Residual material (mm) | 2～6 |
| Melting temperature (℃) | 250～270 | Back pressure (MPa) | 5～10 |
| Injection pressure (MPa) | 100～140 | Clamping force (ton/in2) | 3～4 |
| Injection speed | High speed | Feedback speed (rpm) | 70～90 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close material gate and clean it with injection machine. | Recycling of broken materials (%) | 15～25 |
| Remarks: Fireproof PBT needs to be passed through gun with PE material, and nozzle material is not suitable for recycling. | |||
PVC injection molding technical parameters
| Drying temperature (℃) | No need to dry. If it is wet, dry it below 70℃ for 1 hour. | ||
| Mold temperature (℃) | 30～50 | Residue (mm) | 2～6 |
| Mel temperature (℃) | 160～185 | Back pressure (MPa) | 4～8 |
| Injection pressure (MPa) | 70～110 | Clamping force (ton/in2) | 2 |
| Injection speed | Slow or medium speed | Recycling speed (rpm) | 50～80 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Use HDPE/PS for cleaning | Recycling of scraps (%) | 15～25 |
PET injection molding technical parameters
| Drying temperature (℃) | 100～120 | Drying time (hr) | 3～4 |
| Mold temperature (℃) | 120～140 | Residue (mm) | 3～8 |
| Melt temperature (℃) | 260～295 | Back pressure (MPa) | 5～10 |
| Injection pressure (MPa) | 100～140 | Clamping force (ton/in2) | 3-4 |
| Injection speed | High speed | Feedback speed (rpm) | 60-90 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Shutdown treatment | Need to use PE or PP material to clean barrel | Recycling of broken materials (%) | 10-20 |
PC injection molding technical parameters
| Drying temperature (℃) | 90-110 | Drying time (hr) | More than 2 hours |
| Mold temperature (℃) | 80-110 | Residual material (mm) | 2-8 |
| Melt temperature (℃) | 280-320 | Back pressure (MPa) | 6-15 |
| Injection pressure (MPa) | 130-180 | Clamping force (ton/in2) | 4-6 |
| Injection speed | Medium or high speed | Feedback speed (rpm) | 60-80 |
| Screw type | Standard, fine type (avoid using dehumidification screw and slingshot nozzle) | ||
| Shutdown treatment | Wash with HDPE | Reuse of scraps (%) | 10～25 |
P0M injection molding technical parameters
| Drying temperature (℃) | No need to dry. If it is damp, dry below 100℃ for 2 hours | ||
| Mold temperature (℃) | 40～90 | Residue amount (mm) | 2～6 |
| Mel temperature (℃) | 190～215 | Back pressure (MPa) | 5～10 |
| Injection pressure (MPa) | 80～140 | Clamping force (ton/in2) | 2～4 |
| Injection speed | Medium speed | Recycling speed (rpm) | 50～70 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Need to use PP/PE/PS material for washing | Reuse of scraps (%) | 30 |
PA66 injection molding technical parameters
| Drying temperature (℃) | 80 | Drying time (hr) | 2～3 |
| Mold temperature (℃) | 50～90 | Residue (mm) | 3～8 |
| Melting temperature (℃) | 260～290 | Back pressure (MPa) | 2～6 |
| Injection pressure (MPa) | 90～140 | Clamping force (ton/in2) | 4～8 |
| Injection speed | High speed, especially for thin wall | Recycling speed (rpm) | 70～90 |
| Screw type | Standard screw (avoid using dehumidifying screw), needle valve nozzle. | ||
| Stop processing | Close gate and clean with injection machine | Recycling of broken materials (%) | 5～15 |
| Remarks: For nylon nozzle materials that have decomposed due to high moisture content, their performance cannot be restored, and it is difficult to use them again even if they are dried again. | |||
ABS injection molding technical parameters
| Drying temperature (℃) | 80 | Drying time (hr) | 1.5 |
| Mold temperature (℃) | 45～80 | Residual material (mm) | 2～8 |
| Melting temperature (℃) | 190～235 | Back pressure (MPa) | ９～18 |
| Injection pressure (MPa) | 90～140 | Clamping force (ton/in2) | 2～2.5 |
| Injection speed | Medium | Feeding speed (rpm) | 70～100 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close the gate and clean it with injection machine. | Recycling of broken materials (%) | 20～30 |
K material injection molding technical parameters
| Drying temperature (℃) | Generally no drying is required. If it is damp, it needs to be dried below 65℃ for about 1 hour | ||
| Mold temperature (℃) | 20～60 | Residual material (mm) | 3～8 |
| Melt temperature (℃) | 170～250 | Back pressure (MPa) | 3～10 |
| Injection pressure (MPa) | 60～100 | Clamping force (ton/in2) | 2～2.5 |
| Injection speed | Medium | Feeding speed (rpm) | 70～100 |
| Screw type | Ordinary standard type (when transparency is required, choose a special screw) | ||
| Stop processing | Close gate and clean it with injection machine. | Recycling of broken materials (%) | 20～40 |
AS injection molding technical parameters
| Drying temperature (℃) | 80 | Drying time (hr) | 1～2 |
| Mold temperature (℃) | 40～80 | Residue (mm) | 3～10 |
| Melt temperature (℃) | 210～250 | Back pressure (MPa) | 5～15 |
| Injection pressure (MPa) | 100～140 | Clamping force (ton/in2) | 2～2.5 |
| Injection speed | Medium | Feedback speed (rpm) | 70～100 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close gate and clean with injection machine. | Recycling of broken materials (%) | 0 |
HIPS injection molding technical parameters
| Drying temperature (℃) | 80 | Drying time about (hr) | 1 hour (generally no drying) |
| Mold temperature (℃) | 30～75 | Residual material (mm) | 4～10 |
| Mel temperature (℃) | 175～230 | Back pressure (MPa) | 5～10 |
| Injection pressure (MPa) | 60～110 | Clamping force (ton/in2) | 2 |
| Injection speed | Medium | Feedback speed (rpm) | 60～100 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close gate and clean with injection machine. | Recycling of broken materials (%) | 15～30 |
PS injection molding technical parameters
| Drying temperature (℃) | 80 | Drying time (hr) | 1 hour (generally no drying required) |
| Mold temperature (℃) | 40～60 | Residual material (mm) | 3～12 |
| Melting temperature (℃) | 180～220 | Back pressure (MPa) | 5～10 |
| Injection pressure (MPa) | 70～120 | Clamping force (ton/in2) | 2 |
| Injection speed | Fast | Feedback speed (rpm) | 60～100 |
| Screw type | Standard screw (straight-through nozzle) | ||
| Stop processing | Close gate and clean with injection machine | Recycling of broken materials (%) | 0 |
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