How To Choose The Right Used Injection Molding Machines
                     How To 
Choose The 
Right Used 
Injection 
Molding 
Machines 
Are you looking for the right used injection molding machine to use in 
the production of plastic products in your business? Since there are 
many varieties of used plastic machinery on the market, you need to 
know how to separate the good from the bad and choose the most 
suitable one for your production needs. The following are some of the 
factors you should take into consideration when looking for the right 
machine to buy.  
Shot size is one of the things that you should definitely pay attention to 
when you are looking for the right used injection molding machines to 
buy. This is best defined as the maximum amount of plastic that the 
injection molding machinery can inject into the molding cavity during 
one molding cycle. The amount is rated in ounces of GPPS for U.S. 
machines, and cm3 for European and Asian machines. Before you settle 
for any machine, it is good to check if it is capable of producing 30 to 40 
percent greater shot sizes compared to what your parts require. 
Another factor you should consider when looking for a good used 
plastic injection molder to buy is ejector stroke. This is the action of the 
machine pushing out (ejecting) the final workpiece from the platens 
using ejector pins. The ejector in the injection molder pushes against an 
ejector plate on the mold. Ejector pins or rods are attached to this plate 
and perform a pushing operation on the molded part after the plastic 
has hardened and the mold has opened. 
After the action of molding the workpiece is completed, the mold 
opens and then the ejector pins slowly extend outwards, pushing 
finished part out of the mold cavity. The pin movement is timed with 
the mold opening, since the pins that move too quickly could impact 
the plastic workpiece and damage the final product and pins that move 
too slowly may not eject the molded part fully. 
For more tips on how to choose the right used injection molding 
machines, visit our website at https://www.premierplasticsnj.com/ 
 
How To 
Choose The 
Right Used 
Injection 
Molding 
Machines