Extrusion Screws
Get High-Performance, Custom-Designed Feed Screws for Plastic Extrusion. At SpiraMelt Technologies, We are the Pioneers of Extrusion Screw Design. Let Our Team Design a Screw for You That Improves Melt Quality, Throughput, & Stability!
Products & Services
Let's Work Together!
Please feel free to contact us. Our team will get back to you within 1-2 business days. We are excited to work with you on your new screw project!
Replacement Extrusion Screws
At SpiraMelt Technologies, we specialize in custom-designed extrusion feed screws that are optimized for your processing requirements. We offer a wide range of screw technology to accommodate even the most difficult processing requirements. Let our team help you maximize your production!
Our years of screw design experience allow us to design high-performance screws for just about any resin and application to achieve exceptional throughput, melt quality, stability, and wear life!
- High Output Barrier Screws
- Vented Extrusion Screws: 2 and 3 Stage
- Grooved Feed Screws
- Foam Extrusion Screws
- Low Shear Distributive Mixing Screws
- High Shear Dispersive Mixing Screws
- Custom Designed Screws for Your Application
- Flexible Designs for Multiple Application Use
- Lower Melt Temperature
- Increase Output
- Reduced Scrap Rates
- Extreme Wear Resistant Options
- Extreme Corrosion Resistant Options
- Carefully Engineered Parts That Exceed OEM Tolerances
Custom High-performance extrusion screws that last!
SpiraMelt Technologies is your go-to supplier for high-performance feed screws for plastic extrusion. Our team of expert screw designers can solve even your most challenging processing requirements. Contact us today to get a free quote for a new screw tailored to meet your processing requirements!
- Premature Screw Wear
- Color & Filler Mixing
- Melt Temperature & Quality
- Burning/Degradation
- Vent flooding
- PPH Improvement
- Extruder Extensions
- Sheet
- Profile
- Pipe
- Film
- Foam
- Compounding/Pelletizing
- And More..
New feed screws for plastic extrusion from 12mm (~1/2″) OD to a maximum 450mm (~17.5″) OD
Tool Steel, Nitride, Chrome Plate, PTA Weld, Carbide Encapsulation, PVD Coating, and more.
SpiraMelt Extrusion Melt Stream Components
How can SpiraMelt help you achieve your production goals?
Why Choose Us?
We Specialize in Custom Solutions for Unique Customers Like You.
SpiraMelt is driven by innovation. We do not offer off-the-shelf solutions because we understand that each business and process is unique. Your company deserves the right solution – let us help you!
- Feed screws from Ø12mm to 450mm (0.5" to 17.5"). Single-piece construction up to 7,000mm length (23 feet).
- Bimetallic extrusion and injection barrels with a range of liner options. Single-piece construction to 6,000mm (19.5 feet ) length without seams.
- Non-return valve options from Ø12mm - 250mm (0.5" to 9.75"). Premium, through-hardened tool steels available.
Custom Designed Extrusion Screws
World-Class Performance, Tailored for Your Operation
Let the SpiraMelt team work with you to develop a world-class solution for your business! We specialize in custom solutions for unique customers like you. If you have a hard-to-mold application or are seeking to maximize extrusion efficiency, SpiraMelt Technologies has a solution for you. All of our custom screws are rigorously engineered to exceed OEM tolerances. We can supply screws for any extruder! Contact the SpiraMelt team today to start your next screw project!
Melt Separation
The addition of an auxiliary barrier flight in the MVP barrier section allows the melt pool to flow into an auxiliary channel separate from the solid bed. The additional surface area available in the primary channel allows for significant gains in melting capacity with superior melt quality!
Viscous Heat Dissipation
Melt separation in the SpiraMelt MVP barrier screw design leverages viscous heat dissipation as the primary melting mechanism, rather than relying largely on conductive heat transfer, as seen in conventional screw designs. The MVP is a far more efficient and superior screw design for melt quality and throughput when compared to conventional GP screws.
High Throughput
The SpiraMelt MVP barrier screw family is capable of exceptional pressure development, allowing for maximum output and melt quality. With the shearing action and melt separation seen in the MVP barrier section, solid-bed-break-up is eliminated, even at high rpm.
Barrier Screws
Barrier Screws for Extrusion
The SpiraMelt MVP Barrier screw family is a high-output barrier screw design that delivers 20%+ more output than conventional screw designs. The unique channel geometry of the MVP allows for approximately 1.5x the area available for melting compared to GP screws. Perfect for Olefins and other shear-tolerant resins, the SpiraMelt MVP barrier screw family is the ideal choice for improved throughput and melt uniformity!
Mixing Screws
Mixing Screws for Extrusion
Improved Melt Quality
SpiraMelt mixing screws are custom-designed to maximize melt quality. Whether you process colorants/fillers or not, a tailored mixing screw will promote a high-quality isothermal melt, greatly improving part quality for your customers!
Higher Throughput
Lower melt temperatures = Higher Throughput. Poor screw designs offer a non-uniform melt at best and unmelted solids in the die head at worst. If you’re serious about performance, you need the right equipment!
Reduced Scrap Rates
No more color swirls, burns, and other part defects! Spend more time making excellent product and less time processing around poor screw designs. With a tailored SpiraMelt mixing screw, our customers have seen scrap rate reductions of up to 98%!
Maximize ROI
A high-performance feed screw simply pays for itself. The screw is the heart of the extrusion process, controlling output and melt quality. With the right mixing screw, your processing efficiency and productivity will boost profits while improving part quality for your customers!
2 & 3 Stage Vented Extrusion Screws
VR Pro Series: Optimum Volatile Removal
The SpiraMelt Volatile Removal Pro Series is an expertly engineered vented screw package designed to maximize volatile removal in vented extrusion operation. Whether you are compounding/pelletizing or extruding sheet, profile, etc., the VR Pro is the modern solution for your vented application. Let the SpiraMelt team design a world-class vented screw for your application!
Volatile Removal
The VR Pro Difference
Traditional vented screws typically incorporate a simple deep channel in the vent zone of the screw. These deep channels are prone to areas of low flow/material hang-up and inefficient volatile removal. The glob of material in these channels has a very low surface area available for venting.
The SpiraMelt VR Pro Series utilizes an elegant multi-flighted vent design with unique channel geometry that maximizes surface area for venting while improving flow rate through the vent zone to reduce hang-up and stagnation. This results in superior throughput and melt quality with exceptional stability!
Extrusion Barrels
Bimetallic Extrusion Barrels
SM-10 Bimetallic Liner
The SMT-10 Bimetallic Liner is a Nickel-based Carbide liner with an average hardness of 52-56 HRc. The SMT-10 is an economical cylinder, suitable for general-purpose applications with <15% glass content.
SM-25 Bimetallic Liner
The SMT-25 Bimetallic Liner is a Nick-based Carbide liner with an average hardness of 56-60 HRc. The SMT-25 offers improved wear life, suitable for applications processing <30% glass content.
SM-40 Bimetallic Liner
The SMT-40 Bimetallic Liner is a Nickle-based Carbide liner with an average hardness of 60-65 HRc. The SMT-40 offers exceptional wear resistance for applications processing <50% glass content.
SM-60HF Bimetallic Liner
The SMT-60HF Bimetallic Liner is a Nickle-based Carbide liner with an average hardness of >65 HRc. The SMT-60HF offers extreme wear resistance and corrosion resistance for Halogen free materials.
Your Full Service Screw & Barrel Supplier
Feed Screw and Barrel Rebuilding / Repair
Screw & Barrel Rebuilding / Repair Services
SpiraMelt is your full-service screw and barrel supplier! When your machine is down, or output has dropped, let our team refurbish your screw and barrel to original OEM tolerances. Save time and money with screw and barrel rebuliding!
Expert Screw & Barrel Wear Consultation
Is your screw or barrel worth replacing? Let our screw design experts consult with you to determine the most effective and economical way to get you back up and running fast!
On-Site Screw & Barrel Measurements / Evaluation
SpiraMelt has a team of experts ready to come to you! We will measure your equipment and evaluate the best options for your company. When we come to you, we provide a full service report for your records!
Screw & Barrel Rebuilding = Excellent ROI
When SpiraMelt rebuilds your equipment, you save money! Extend the life of your screws and barrels with proper preventative maintenance and rebuilding protocols. Let us serve you!
Get a Free Quote
Get a free estimate for any new screws, barrels, valves, and more!
Products & Services
SpiraMelt Technologies is your go-to supplier for custom, high-performance feed screws, barrels, non-return valves, endcaps, and more! Get replacement melt stream components at competitive prices, reliable lead times, and best-in-class performance. We can supply equipment to fit any make/model injection molding machine or extruder – if you have an application that needs improvement, SpiraMelt is here for you.
High-Performance Feed Screws for Injection Molding & Extrusion
Custom extrusion and injection molding screws designed for your application. Screw sizes from Ø12mm to 450mm and sections up to 7,000mm in length. SpiraMelt can design high-performance screws with any steel, PTA hardfacing, nitride, chrome plate, PVD coating, carbide encapsulation, and more!
Long-Lasting Bimetallic Barrels for Injection Molding & Extrusion
Long-lasting bimetallic barrels for injection molding and extrusion applications. Barrel sizes range from Ø14mm+ with sections up to 6,000mm in length. SpiraMelt offers a wide range of tungsten carbide liners to suit even the most abrasive and corrosive processes.
Injection Molding Non-Return Valves & Screw Tip Assemblies
The SpiraMelt SRV non-return valve family offers best-in-class accuracy and repeatability. Achieve exceptional part weight shot after shot with the long-lasting SRV valve family. Valve assemblies ranging from Ø12mm to 250mm, made from premium, high wear-resistant tool steels built to last!
On-Site Screw & Barrel Wear Inspection - Measurement Services
Stop losing productivity and profits! Let the SpiraMelt team come to your facility to measure your screws and barrels for wear. Our team will inspect your equipment and make expert recommendations to improve wear life, output, and overall performance. The SpiraMelt team is part of your preventative maintenance protocol.
Why Choose Us?
We Specialize in Custom Solutions for Unique Customers Like You.
SpiraMelt is driven by innovation. We do not offer off-the-shelf solutions because we understand that each business and process is unique. Your company deserves the right solution – let us help you!
- Feed screws from Ø12mm to 450mm (0.5" to 17.5"). Single-piece construction up to 7,000mm length (23 feet).
- Bimetallic extrusion and injection barrels with a range of liner options. Single-piece construction to 6,000mm (19.5 feet ) length without seams.
- Non-return valve options from Ø12mm - 250mm (0.5" to 9.75"). Premium, through-hardened tool steels available.