Plasticizing Systems – Our expertise for the success of our customers
Plasticizing Systems – Our expertise for the success of our customers
The right screw for every process
Plasticizing systems
Plasticizing systems for injection molding machines must meet many different requirements. These range from processing easy-flowing, semi-crystalline thermoplastics to molding highly reinforced, sluggishly flowing plastics with processing temperatures of up to 450 °C. Just as diversified is the interaction between the plastic materials processed and the plasticizing components coming into contact with them. In-depth expert knowledge is required to choose the right components in each case – and to manufacture them.
The right screw for every process. Researched, optimized and manufactured by WITTMANN BATTENFELD.
EXPERIENCE
Many years of experience in developing and building plastics processing machines
KNOWLEDGE
Recording and research on flow dynamics and their effect on the system components
INNOVATION
Continuous verification of contact and wear effects of new plastic materials and compounds
CONSULTANCY
In the selection of material combinations and geometries
ASSISTANCE
With all questions regarding plastics processing
Wide range of non-return valves
Opening and closing of a non-return valve is triggered solely by the screw movement direction or the plastic flow without a separate mechanism. Different types of non-return valves are available to suit the different operating conditions. Decisive for the choice of design is the possible closing and wear behaviour.
- Ring check valve (CG01) - universal standard design
- Ball check valve (CG02) - for large screw diameters
- PVC tip (CG04) - without non-return valve for deep immersion into the nozzle
- Special solutions - customized solutions such as cross pin check valves
Wide range of plasticizing screws
- Standard 3-zone screw (Unimelt) – universal applications
- Mixing screws (Colourmelt) – excellent material homogenization, especially when using colorant additives
- Barrier screws (MeltProTM) – higher throughput capacity with the same screw diameter
- Special screws – e.g. PVC, thermoset or elastomer screws, as well as Cellemelt for N2-based foam injection molding
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