As a general rule, look for plastics with the lowest possible injection temperature
and the lowest molten viscosity.
([degrees]C) 200 Injection pressure (bar) 600 Injection time (s) 10 Mold Temperature ([degrees]C) 25 or 105
A steam injection temperature
of 110[degrees]C and a platen temperature of 120[degrees]C (Listyanto et al.
The DSREV extruder is a pre-configured machine with feedscrew and head zone direct injection temperature
control units, a compact base, and simplified cooling and wiring systems.
Although the injection composition, like the injection temperature
, is known to affect the MMP, these simulation studies only considered the effect of the injection temperature
on the MMP.
The injection temperature
control using the induction heating is shown in Figure 1:
That temperature is increased somewhat in the plunger, and increased further to final injection temperature
in the hot-runner nozzle.
The injection of heat into a natural groundwater system will introduce an interface zone called the thermal front, where the water temperature will vary from the injection temperature
to the ambient groundwater temperature.
After a number of trials injection temperature
, injection pressure, and clamp pressure and injection time were optimized for different powder loadings.
Recommendation: Using instrumented wax injection trials with a step block mold, recent research evaluated the restraint of geometrical features by the metal die and process parameters such as dwell time, platen temperature, injection pressure and injection temperature
Temperature conditions were set similar to the MMA method: the injection temperature
was 275 [degrees]C and the oven temperature was programmed at 15 [degrees]C/min from 325 [degrees]C.
Measurements taken on instrumented molds have shown that a polymer may remain at its injection temperature
for approximately one-half second before it begins to cool dramatically.