PS Injection Molding Process
1) PS injection molding process property
PS has low hydroscopic property, about 0.02%~0.3%, need not special dry before injection molding process.
2) PS injection molding process property
PS melt material has good flow ability, even though the plastic product with complex structure, PS is easy to molding, but sometime it may flash.
3) PS injection molding process property
We can use various types of material entry, material entry should connection to plastic circular arc, to avoid damage plastic product when takeout gate.
4) PS injection molding process property
PS plastic product draw tapper is better choose bigger than 2 º, ejector should be even ,to avoid deformation when meet bad drop down.
5) PS injection molding process property
PS is a unformed polymer, no oblivious melt point, from melting to decomposition, the temperature is very wide, the range of suitable molding temperature is wide too.
6) PS injection molding process property
PS shrinkage and its change range are small, generally 0.2%~0.8%, in favor of molding plastic product with high precise size and stability size.
7) PS injection molding process property
PS plastic product has big inner force, therefore, the plastic product should be heat treatment immediately after drop down.
8) PS injection molding process property
Because of PS plastic product has big inner force, easy cracking, so it is not suitable to add insert, if there is a insert, it should be re-heat.
9) PS injection molding process property
PS melt material solidify speed is very high, so the holding pressure should not be too long after injection.
10) PS injection molding process property
On the basic of no welding line, PS injection speed should slow if possible; this plastic product will has good transparent, good strength and small inner force.
11) PS injection molding process property
PS can use screw injection molding machine, can use straight way type and self-interlock.
This is information about PS injection molding, if you want to know ABS injection moulding please go to our mean website by click ABS injection moulding.