introduction to pin-point gate
pin-point gate is also known as needle gate, it has smaller sectional area, typically with d=0.5—1mm, it applies to plastic part materials that flow well in injection molding. […]
the purpose is to increase the resistance to the material flow at the near-by cavities
the purpose is to increase the resistance to the material flow at the near-by cavities, for practical reason, a smaller gate size is used, […]
what is the primary principle in selecting a feeding system in mold design?
so when we select a feeding system, what is the primary principle? I think it is to maintain the temperature and pressure as it flows out of the nozzle and fill out the cavity easily. Commonly, it prefers a “ short and thick” spure, runner, and gate. Other considerations are also given to the requirement [...]
about Gas-assisted injection molding
today you ask me some questions about Gas-assisted injection molding, now I have some information about it at hand. […]
how does a core-back mold work?
the most important thing is that kind of molding method does not need to open the machine and further transport of a molded part in one mold. […]
how does a two-colored mold work?
for example, for a two-colored part, mold with rotating mold platen or rotating mold half, the first colored section is created by injection at the first mold position. […]
do you know a hot runner nozzle with a needle valve?
do you know a hot runner nozzle with a needle valve? That is so called valve gate, the gate mark produced by a valve gate tends to be clear, round and smooth, […]
some details about outer heated hot runner
as for outer heated hot runner, let me tell you some, in this kind of system, the feeding runner of fused materials is heated exteriorly. […]
more details about inner heated hot runner system
in an inner heated hot runner system, the most important element we will concern is the thermal uniformity of fused materials arriving at the cavity. It is determined by these three elements: […]
what about inner heated hot runner?
but what about inner Heated Hot runner? At first , please understand heating element, […]