Injection Molding Screws
Get High-Performance, Custom-Designed Injection Molding Screws to Fit Any Injection Molding Machine. At SpiraMelt Technologies, We Specialize in Injection Molding Screw Designs That Improve Melt Quality, Recovery Time, Cycle Time, and Overall Molding Efficiency. Let Our Team Design a Solution for Your Process!
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 Injection Molding Screws
At SpiraMelt Technologies, we specialize in custom-designed injection molding screws that are optimized for your processing requirements. We offer a wide range of screw technology to accommodate even the most difficult molding applications. Let our team help you maximize your production!
- Low Shear Distributive Mixing Screws
- High Shear Dispersive Mixing Screws
- High Output Barrier Screws
- Modern General Purpose Screws
- Custom Designed Screws for Your Application
- Flexible Designs for Multiple Application Use
- Improved Recovery Time
- Improved Cycle Time
- Reduced Scrap Rates
- Extreme Wear Resistant Options
- Extreme Corrosion Resistant Options
- Carefully Engineered Parts That Exceed OEM Tolerances
Injection molding screws that work and last!
SpiraMelt Technologies is your go-to supplier for high-performance feed screws for injection molding. Our team of expert screw designers can solve even your most challenging molding applications.
- Premature Screw Wear
- Color & Filler Mixing
- Melt Temperature & Quality
- Burning/Degradation
- Cushion Variation
- Cycle Time Improvement
- And More..
New feed screws for injection molding 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 Injection Molding Melt Stream Components
How can SpiraMelt help you achieve your production goals?
Screw Tip Assemblies
Injection Molding Non-Return Valve Assemblies
The SpiraMelt SRV family of injection molding non-return valves offers best-in-class repeatability! The SRV is the last screw tip you will ever use. Each valve assembly is custom-designed by our team of experts to best match your production requirements. We offer a range of premium high wear resistant tool steels to build your valve to last!
Injection Cylinders
Bimetallic Injection Molding Barrels
SpiraMelt Technologies offers a full range of premium wear-resistant bimetallic barrel liner options to suit any injection molding application! Our SM-10, SM-25, SM-40, and SM-60HF bimetallic barrel liners provide a complete selection of exceptional wear resistance and corrosion resistance for our customers. Let the SpiraMelt team design your next barrel today!
Mixing Screws
Mixing Screws for Injection Molding
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!
Faster Cycle Times
Lower melt temperatures = faster cycle times. General-purpose screws offer a non-uniform melt at best and unmelted solids in the mold at worst. If you’re serious about cycle times, you need the right equipment!
Reduced Scrap Rates
No more color swirls, burns, and other part defects! Spend more time molding excellent parts 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 molding process, controlling output and melt quality. With the right mixing screw, your molding efficiency and productivity will boost profits while improving part quality for your customers!
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 Injection Molding
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 perfect choice for improved recovery time and melt uniformity!
General Purpose Injection Screws
The Delta Melt: The First Innovation In General Purpose Screw Technology
Processing Window
The SpiraMelt Delta Melt mixing screw is the first true all-purpose screw developed specifically for molders that process a wide range of resins. The Delta Melt can handle even the most shear-sensitive resins, such as Rigid PVC! Spend less time processing around antiquated GP screws.
Improved Filler Dispersion
With filled materials, like glass or other abrasives, traditional GP screws often lead to poor dispersion and poor mechanical and cosmetic properties of the molded part. The Delta Melt helps promote strand alignment for superior melt uniformity and filler dispersion.
Faster Cycle Times
Traditional GP screws suffer from solid-bed-break-up and poor melt quality. With the SpiraMelt Delta Melt screw, our customers achieve exceptional part quality on even the most shear-sensitive resins, even at higher rpm. With low-shear mixing, the Delta Melt allows for higher throughput without sacrificing melt quality. Achieve lower melt temperatures with the Delta Melt.
Economics
The Delta Melt screw was developed with contract molders in mind. We understand that you run everything under the sun. With the Delta Melt, you can have one screw that just works! From Rigid PVC to PP, the Delta Melt is a low-shear screw that offers truly all-purpose performance. Spend more time molding parts and less time fighting old, antiquated GP screws!
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 Injection Molding Screws
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 molding 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 injection molding machine! Contact the SpiraMelt team today to start your next screw project!
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.