Previously, we discussed Runner which is a system (path) of mold. It let plastic material flow travel from outside of mold into cavity area. In most cases, Gate located at the end of Runner, it is an entrance for material flow into cavity area. See concept in Pic.-1. Note: Red: Runner system, Orange: location ring (a… Continue reading
Post Category → C-Mold
C-4-Runner System
Runner is a system (path) of mold for plastic material flow travel from outside of mold into cavity area, see concept in pic.-illustration of mold. Here discuss 3 runner systems Generally, Cold runner could be divided into areas below, see detail in pic.-illustration of Cold runner type-1 Some parts need many even distributed Gates to… Continue reading
C-3-Cooling
Plastic is a material which very sensitive to temperature. Previously in properties of plastic, we have discussed important plastic characteristics which are related to the same. In a molding process, the temperature of plastic is well controlled from drying, transporting, melting (the injection molding machine heat the raw material up to process range), and of… Continue reading
C-2-Ejection
During molding process, the part shall be able to be taken out smoothly after mold open. In doing so, the part maybe damaged since it is still stick on the moving side of mold after mold open in most mold design. Since the melt plastic starts to cool down after it is being injected into… Continue reading
C-1-Mold Concept
Injection molding process needs 3 major elements: raw material, injection molding machine, and mold. The process basically is that Injection molding machine melts raw material and inject it into mold, the mold opened, and we get the part. The purpose of mold is to form the melt plastic to the shape of part. It could… Continue reading