VR Pro Vented Extrusion Screws
Volatile Removal Pro
Optimum Volatile Removal
The SpiraMelt VR Pro series is a high performance vented screw solution for modern vented extrusion applications. The SpiraMelt VR Pro series can be outfitted and modified to accommodate a wide range of extrusion requirements including 2-stage and 3-stage variations (VR Pro 2 and VR Pro 3) and our MVP VR Pro series that includes our high performance barrier section in the first stage. The unique vent and mixing geometry of the VR Pro series maximizes volatile removal, eliminates vent flooding, and produces a high quality extrudate at lower melt temperatures. Unlike conventional vented screws, the VR Pro series has no areas of low flow or stagnation. The SpiraMelt VR Pro series is perfect for sheet, reclaim/pelletizing, side-feeding, or any other extrusion application that demands optimum venting and volatile removal.
2 Stage and 3 Stage Vented Extrusion
The SpiraMelt VR Pro series is fully customizable and offers a full spectrum of technology to accommodate both 2-stage and 3-stage vented operation. The unique venting geometry is optimized for superior volatile removal, regardless of the application.Â
Volatile Removal
The SpiraMelt VR Pro Series is best-in-class for vented extrusion. perfect for sheet, reclaim/pelletizing, side-feeding, or any other extrusion application that demands optimum venting and volatile removal.
Melt Quality
The SpiraMelt VR Pro Series improves overall throughput while supplying a high quality isothermal melt. Lower melt temperatures at higher outputs can be achieved on vented extrusion applications!
Improved Vented Extrusion Operation
The SpiraMelt VR Pro series significantly improves volatile removal when compared to conventional vented screw designs. The SpiraMelt VR Pro series incorporates a spiral mixing chamber to adequately melt and disperse agglomerates prior to venting. The unique channel geometry of the vent section eliminates stagnation and low flow areas. In the vent section, the melt pool is separated into rope-like strands, significantly increasing the surface area of the melt pool for degassing. Traditional vent designs allow for a large blob of resin with low surface area to sit in the bottom of the channel. These designs are prone to hang up and lack sufficient degassing. The unique geometry of the SpiraMelt VR Pro series eliminates vent flooding and greatly improves melt quality, output, and stability of vented extrusion applications that demand optimum volatile removal.
Features and Benefits
- Optimum volatile removal with no areas of low flow or stagnation seen in conventional vent designs. Surface area of exposed resin is maximized for improved degassing.
- High throughput and process stability with no vent flooding or surging. The VR Pro vent section provides adequate dispersive and distributive mixing prior to venting to ensure that pressure, melt quality, and stability are maintained throughout the system.
- Superior part quality at lower melt temperatures. Whether 2-stage or 3-stage vented operation, the VR Pro series offers superior melt uniformity and output when compared to conventional vented screw designs.
Excellent performance across most resins, including Amorphous and Semi-Crystalline materials and applications that demand optimum volatile removal.
ABS
PC
PC/ABS
HIPS
PVC
PP
PE
Nylon
Filled or unfilled resin packages and more