Delta Melt Mixing Screw
Variable Lead Delta Melt
Ideal for Shear Sensitive and Abrasive Materials
The SpiraMelt VLDM Screw is the only true general purpose screw in the industry. Unlike traditional GP screws, the VLDM Screw incorporates a unique variable lead melt channel, optimized for higher melt capacity and throughput. The VLDM metering section utilizes multiple flights for better melt separation and reorientation while the unique geometry of the SpiraMelt Delta Melt Mixer provides gradual, self-cleaning, low-shear flow paths that unifies melt temperature. Converging and diverging melt channels promote strand alignment in filled applications. The VLDM Screw offers reduced scrap rates and higher outputs at lower melt temperatures. The design can be tailored for a wide range of thermoplastic applications including shear sensitive and abrasive resins – making the VLDM Screw a truly all-purpose screw design.
Optimized for Injection Molding and Extrusion Applications
The SpiraMelt VLDM Screw is the only true all-purpose screw in the industry. The VLDM Screw is perfect for both injection molding and extrusion applications where a wide range of resins or shear sensitive and filled resins are to be processed on a single line. The converging and diverging flow paths in the Delta Melt section promotes a high quality, isothermal melt with no areas of low flow for hang-up and stagnation or over-shearing of the melt. The efficient distributive mixing of the Delta Melt section can reliably process even the most shear intolerant resins like Rigid PVC.
Low Shear Mixing
The SpiraMelt VLDM Screw offers the best low shear distributive mixing in the industry! Improve melt quality on shear sensitive and filled resins today.
Processing Window
The SpiraMelt VLDM Screw has a wide processing window across almost all resins! The VLDM Screw is the only true all-purpose screw in the industry.
Features and Benefits
- Promotes a high quality isothermal melt through low shear distributive mixing and agitation of flow
- Enhances the effect of additives and fillers on molded part quality with improved wear life
- Eliminates un-melts and agglomerates with minimal melt temperature increase and improved melt uniformity across a wide range of applications
Excellent performance across most resins, including Amorphous , Semi-Crystalline, and filled materials
Rigid PVC
PC
PMMA
ABS
PC/ABS
Filled Resins
PEI
PE
PP
PS
PEEK
Nylon
TPE
TPU
And more