The most effective way to value the significance of correct machine selection is to list down the most common faults made when choosing machines and the consequences on part productivity and condition.

 

Mistake 1: Purchasing Used Injection Machines Working Poorly

 

The key to purchasing a dependable used machine is to look for the one that has been completely examined and checked before delivering it so that you don't undergo the production loss because of multiple breakdowns.

 

Mistake 2: Choosing Large Screw Diameters.

 

Sometimes the big screw diameters can lead to poor quality problems because of the material deprivation. When small shot sizes are utilized with big screw thickness, the plastic material takes more time to get warmed by the barrel heaters as a comparison to the big shot sizes. Material deprivation is more probable to happen if the shot size is undersized as a comparison to the injection unit's utmost shot capacity, particularly for heat sensitive materials.

 

The other difficulty with large screw thickness are the big clipping forces produced during screw revolution, this can also break down the material and is probable to cause reject parts.

 

Mistake 3: All-purpose Screws

 

The main benefit of an all-purpose screw is that they can be utilized with most plastic materials like PE, PP, PET, Nylon, and PC so they're very adaptable and good for molding companies that mold a range of various materials.

 

The drawback is that, for a few materials, component types and efficiency rates will be lesser compared to more superior injection casting screw designs like the barrier screw.