Resin Figure 2.6 Resin Injection Molding heated mold mat thermoset resin heater counter- mold Figure 2.7 Injection of Premixed Heaters Mat+Themmoplastic resin Figure 2.8 Injection of Thermoplastic Premixed 2.1.4 Resin Injection Molding With resin injection molding(see Figure 2.6).the reinforcements(mats,fabrics)are put in place between the mold and countermold.The resin (polyester or phenolic) is injected.The mold pressure is low.This process can produce up to 30 pieces per day.The investment is less costly and has application in automobile bodies. 2.1.5 Molding by Injection of Premixed The process of molding by injection of premixed allows automation of the fabrication cycle(rate of production up to 300 pieces per day). Thermoset resins:Can be used to make components of auto body.The schematic of the process is shown in Figure 2.7. Thermoplastic resins:Can be used to make mechanical components with high temperature resistance,as shown in Figure 2.8. 2003 by CRC Press LLC2.1.4 Resin Injection Molding With resin injection molding (see Figure 2.6), the reinforcements (mats, fabrics) are put in place between the mold and countermold. The resin (polyester or phenolic) is injected. The mold pressure is low. This process can produce up to 30 pieces per day. The investment is less costly and has application in automobile bodies. 2.1.5 Molding by Injection of Premixed The process of molding by injection of premixed allows automation of the fabrication cycle (rate of production up to 300 pieces per day).
Thermoset resins: Can be used to make components of auto body. The schematic of the process is shown in Figure 2.7.
Thermoplastic resins: Can be used to make mechanical components with high temperature resistance, as shown in Figure 2.8. Figure 2.6 Resin Injection Molding Figure 2.7 Injection of Premixed Figure 2.8 Injection of Thermoplastic Premixed TX846_Frame_C02 Page 20 Monday, November 18, 2002 10:40 AM © 2003 by CRC Press LLC