The screw-tip-set is the heart of the plasticising unit.
Screw-tip-sets must close safely and should allow a constant mass cushion in order to guarantee high repeatability to ensure even dosing.
There are no good or bad screw-tip-sets, only suitable and unsuitable ones. Screw-tip-sets by Groche aim to achieve minimal wear and a long service life.
Our qualities
SCREW-TIP-SETS
3-part screw-tip-set
The three part standard screw-tip-set – a good compromise.
VKS screw-tip-set
Shuts off quickly and has a high wear resistance due to specialised geometry.
2-wing screw-tip-set
The 2-wing screw-tip-set has a big flow-cross-section diameter for fast dosing.
Central ball screw-tip-set type I
The ball screw-tip-set shuts off more evenly but reduc-
es the flow-cross-section. Suitable for plastics with low viscosity. Available from Ø 45.
Central ball screw-tip-set type II
The ball screw-tip-set shuts off more evenly but reduc- es the flow-cross-section. Suitable for plastics with low viscosity.
Diagonal ball screw-tip-set
The diagonal screw-tip-set shuts off more evenly but re- duces the flow-cross-section. Suitable for plastics with low viscosity.
Multiple ball screw-tip-set
The balls work like bearings. Suitable for unfilled plastics.
Screw tip-set for moist polyester (BMC)
Minimises the risk of breakage for moist polyester and other highly viscous plastics.
Castle screw-tip-set
The claws of the screw-tip-set guarantee a precise injection.
Lawson screw-tip-set
The Lawson screw-tip-set has a large flow-cross-section with a locked valve ring for fast dosing.
4-part screw-tip-set
A additional pilot-ring enables the screw-tip-set to be closed quickly.
PVC screw-tip with/without screw flight
The usual screw-tip,with/without flight.
