Simple Introduction to the Continues Pre-expander and Batch Pre-expander
There are two basic type of our pre-expander, continues and batch pre-expander.
Today I would introduct these two types of pre-expander to you.
1.Continues pre-expander :
(1)All process works automatically including filling ,expanding,sieving ,grinding ,
and conveying ,etc.
(2)Screw continuous feeding ,tolerance in density is less than 5% ;
(3)Recommend for second expansion & limit budget.
2.Batch pre-expander :
(1)Including common dry bed ,auto -feeder ,screening and auto-weighting device;
(2)Auto operation , electrical control with PLC and touch screen, can greatly reduce
the person cost;
(3)More stable, foam density is more precise , tolerance in density is less than 3 % ,
high efficiency as well;
(4)Very popular pre-expander machine in market for packaging.
The following is some technical differences between them.