List of plastic molding processing temperatures, mold temperatures, and general plastic shrinkage rates during injection molding
Plastic molding processing temperature, mold temperature and general plastic shrinkage during injection molding | |||||||
Chinese name | English | density | Glass fiber content | Average specific heat | Processing temperature | Mold temperature | Shrinkage |
[g/cm3] | [%] | [KJ/(kg x K)] | [°C] | [°C] | [%] | ||
Polystyrene | PS | 1.05 | 1.3 | 180-280 | 10 | 0.3-0.6 | |
Polystyrene, medium and high impact | HI-PS | 1.05 | 1.21 | 170-260 | 5-75 | 0.5-0.6 | |
Polystyrene-acrylonitrile | SAN | 1.08 | 1.3 | 180-270 | 50-80 | 0.5-0.7 | |
Acrylonitrile-butadiene-styrene | ABS | 1.06 | 1.4 | 210-275 | 50-90 | 0.4-0.7 | |
Phenylene-styrene-acrylic acid | ASA | 1.07 | 1.3 | 230-260 | 40-90 | 0.4-0.6 | |
Low-density polyethylene | LDPE | 0.954 | 2.0-2.1 | 160-260 | 50-70 | 1.5-5.0 | |
High-density polyethylene | HDPE | 0.92 | 2.3-2.5 | 260-300 | 30-70 | 1.5-3.0 | |
Polypropylene | PP | 0.915 | 0.84-2.5 | 250-270 | 50-75 | 1.0-2.5 | |
Polyene-GR | PPGR | 1.15 | 30 | 1.1-1.35 | 260-280 | 50-80 | 0.5-1.2 |
Polyisobutylene | IB | 150-200 | |||||
Polymethylpentene | PMP | 0.83 | 280-310 | 70 | 1.5-3.0 | ||
Soft polyvinyl chloride | PVC-soft | 1.38 | 0.85 | 170-200 | 15-50 | >0.5 | |
Hard polyvinyl chloride | PVC-rigid | 1.38 | 0.83-0.92 | 180-210 | 30-50 | 0.5 | |
Polyfluoroethylene | PVDF | 1.2 | 250-270 | 90-100 | 3.0-6.0 | ||
PTFE | PTFE | 2.12-2.17 | 0.12 | 320-360 | 200-230 | 3.5-6.0 | |
Fluorinated vinyl propylene copolymer | FEP | ||||||
Polymethyl methacrylate (propylene) | PMMA | 1.18 | 1.46 | 210-240 | 50-70 | 0.1-0.8 | |
Polyoxymethylene (ethylene) | POM | 1.42 | 1.47-1.5 | 200-210 | >90 | 1.9-2.3 | |
Polyphenylene oxide or polyoxybenzene | PPO | 1.06 | 1.45 | 250-300 | 80-100 | 0.5-0.7 | |
Polyphenylene oxide-GR | PPO-GR | 1.27 | 30 | 1.3 | 280-300 | 80-100 | |
Cellulose acetate | CA | 1.27-1.3 | 1.3-1.7 | 180-320 | 50-80 | 0.5 | |
Acetic acid-butyric acid cellulose | CAB | 1.17-1.22 | 1.3-1.7 | 180-230 | 50-80 | 0.5 | |
Propionate | CP | 1.19-1.23 | 1.7 | 180-230 | 50-80 | 0.5 | |
Polycarbonate | PC | 1.2 | 1.3 | 280-320 | 80-100 | 0.8 | |
Polycarbonate-GR | PC-GR | 1.42 | 10-32 | 1.1 | 300-330 | 100-120 | 0.15-0.55 |
Polyethylene terephthalate | PET | 1.37 | 260-290 | 140 | 1.2-2.0 | ||
Polyethylene terephthalate-GR | PET-GR | 1.5-1.57 | 20-30 | 260-290 | 140 | 1.2-2.0 | |
Polybutylene terephthalate | PBT | 1.3 | 240-260 | 60-80 | 1.5-2.5 | ||
Polybutylene terephthalate-GR | PBT-GR | 1.52-1.57 | 30-50 | 250-270 | 60-80 | 0.3-1.2 | |
Nylon 6 (polyamine 6) | PA 6 | 1.14 | 1.8 | 240-260 | 70-120 | 0.5-2.2 | |
Nylon 6-GR | PA 6-GR | 1.36-1.65 | 30-50 | 1.26-1.7 | 270-290 | 70-120 | 0.3-1 |
Nylon 6/6 | PA 66 | 1.15 | 1.7 | 260-290 | 70-120 | 0.5-2.5 | |
Nylon 6/6-GR | PA66-GR | 1.20-1.65 | 30-50 | 1.4 | 280-310 | 70-120 | 0.5-1.5 |
Nylon 11 | PA 11 | 1.03-1.05 | 2.4 | 210-250 | 40-80 | 0.5-1.5 | |
Nylon 12 | PA 12 | 1.01-1.04 | 1.2 | 210-250 | 40-80 | 0.5-1.5 | |
Polyether oxime | PSO | 1.37 | 310-390 | 100-160 | 0.7 | ||
Polysulfide | PPS | 1.64 | 40 | 370 | >150 | 0.2 | |
Thermoplastic polyurethane | PUR | 1.2 | 1.85 | 195-230 | 20-40 | 0.9 | |
Phenol Formaldehyde Resin GP | PF | 1.4 | 1.3 | 60-80 | 170-190 | 1.2 | |
Melamine formaldehyde GP | MF | 1.5 | 1.3 | 70-80 | 150-165 | 1.2-2 | |
Melamine phenol formaldehyde | MPF | 1.6 | 1.1 | 60-80 | 160-180 | 0.8-1.8 | |
Polyester resin | UP | 2.0-2.1 | 0.9 | 40-60 | 150-170 | 0.5-0.8 | |
Epoxy resin | EP | 1.9 | 30-80 | 1.7-1.9 | Ca.70 | 160-170 | 0.2 |
Soft PE shrinkage - 2.5% a Note the different shrinkage rates and flow effects in the flow direction and lateral direction. | |||||||
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