Compression molding, injection molding, or transfer molding is chosen depending on the shape, size, and quantity of the molded product.
Method | Compression molding | Transfer molding | Injection molding |
---|---|---|---|
Use | Common products requiring strength | Products requiring insert-molding | Mass-produced products and areas requiring precision |
Merits | Small quantity batch production Reduction of molding costs | Insert-molding/encapsulation The cavity can be widened. | Capable of mass production Excellent precision Excellent production processability |
Molding conditions |
Forming temperatures: 150-170℃ Forming pressure: 100-200㎏/㎠ Clamping time Primary: 2-3 sec. Secondary: 2-3 sec. Tertiary: 5-10 sec. Molding time: 40-60 sec./mm |
Material preheating:40-70℃ Forming pressure: 130∼150℃ Forming pressure: 30-100㎏/㎠ Injection time: 5-15 sec. Molding time: 40-60 sec. |
Forming temperatures: 150-180℃ Forming pressure Primary: 500-1000㎏/㎠ Secondary: 300-500㎏/㎠ Molding time: 1-5 sec. Holding pressure time: 10-20 sec. Molding time: 20-30 sec. Screw RPM: 50-100 |
Our BMC products in this line are used for head lamps and fog lamp reflectors. Used specifically as materials for injection molding, they have excellent injection moldability and paintability (UV Base coating and aluminum vacuum metalizing).
Grade | Characteristic | Application | Molding method | Data sheet |
---|---|---|---|---|
SN-425 | Anti-Fogging | Head lamps and fog lamp reflectors | Injection molding |
View technical sheets Request MSDS’s |
SN-425 (low specific gravity | Anti-Fogging Specific gravity: 1.6 |
Head lamps and fog lamp reflectors | Injection molding | |
SN-203 | Good injection workability | Head lamps and fog lamp reflectors | Injection molding |
These products are used not only for head lamp assay and fog lamp assay products produced by Hyundai Mobis, SL Group Hyundai Motor, Kia Motors, Chevrolet, and Renault Samsung Motors, but also for those by Japanese and European automakers.