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- TORAYCA™ Carbon Fiber Reinforced Thermoplastic
- Notes on Molding
Notes on Molding
Ⅰ. Molding conditions
| Predrying/time | Cylinder temperature | Mold temperature | Injection pressure | |
|---|---|---|---|---|
| ABS | 90 to 100°C/3 to 6h | 240 to 260°C | 60 to 90°C | 70 to 140 MPa |
| Nylon | Nylon Drying is not required if the product is used immediately after unpacking.If it has been stored after unpacking, remove moisture from and dry the product at 80 to 90°C for 4 to 5 hours. | 260 to 280°C(N6) 270 to 290°C(N66) |
70 to 80°C | 50 to 100 MPa |
| PBT | 130°C×3h | 230 to 260°C | 40 to 80°C | 28 to 140 MPa |
| PPS | 130 to 150°C×3h | 290 to 330°C | 130 to 150°C | 80 to 150 MPa |
Ⅱ. Stopping the molding and changing the material
At the end of molding or when stopping the machine for an extended period, replace the material in the cylinder with high-density polyethylene or other resin. If the CFRTP is left in high temperature for a long period, the resin may break down and cause the carbon fibers to solidify, thus making it difficult to continue with the molding work.
Ⅲ. Handling precautions
- When operating a manufacturing process using the CFRTP, exercise caution to shut out powder dust from the electrical equipment as much as possible, by maintaining positive pressures in the equipment, for example, so as to prevent the equipment from experiencing short circuiting.
- Dispose of the CFRTP correctly as industrial waste instead of burning the resin.
- Read the Material Safety Data Sheet for CFRTP before using the resin.
Ⅳ. Mold materials
For injection molding tool using the CFRTP, the use of a steel material that has both abrasion resistance and corrosion resistance is recommended. Particularly at the gate and at the flow end, the mold will get damaged easily. Carefully select the steel to be used, and note whether it has been quenched. You are also advised to take appropriate measures, such as adopting a nesting system so that replacement is possible.
| Steel material | Strength | Abrasion resistance | Corrosion resistance | Processability | Surface finishing |
|---|---|---|---|---|---|
| SKD11 | A to B | A | B | B to C | B |
| SKD61 | B | A to B | B | A | A to B |
| SUS420 | B | A to B | A to B | A to B | A |
| SUS630 | B to C | B to C | A | C to D | B |
| SCM440 | C to D | B to C | C | B | B |
| S55C | D | D | D | A | D |
A: Excellent ⇔ D:Poor