It is very important to be clear of your investment, this is the soul of PP woven bag manufacturing; thing to consider
There are two common type of extruders for PP, The "stingler type, some people call germany or Austria type; The other type is "chinese" type....
The Germany type advantages are (they come in different types(single, series, magnetic etc.. and sizes )
Disadvantage
The Chinese Type advantages are (they come in different types(single, series, magnetic etc.. and sizes )
Disadvantes
You will require multiple of this, standard size pp woven bag factory accomodate about 18 sets. (search flat loom for comparison)
things to consider
We recomend you go for automatic cutting and sewing machine, also you will need to regular sewing machine to sew on top of the bag when require
ask for rough (zig-zag) knife on the cutter
choose printer according to required quality of prints and frequency of use
if you want very good quality and requirement for printed bag is big or need two side print go for continous roll to roll printer (image two)
Other need secondary machinery are bale pressing, chillers for cooling water and mechanics tool boxes
wether you are using the recycled material or not, you will need recycle plant because during production there will some waste and you will need to granulate them
you will need a crusher (ask for big system if you are using chinese extruder, waste is slight more about 5-10% of material end up as waste during start-up)