Posi-Melt™ MB Barrier Screws
Posi-Melt™ XLA Mixing Screws
Posi-Melt™ Multipurpose Screws
Posi-Melt™ Extrusion Screws
High Performance Plasticating Barrels
Inject-EX™ Plasticating System
Patented Technology certified

Patented Technology

Made in USA certified

Made in USA

Custom Screws Wholesale Manufacturers Near Houston

MD Plastics manufactures custom screws and plasticating systems engineered for injection molding, extrusion, and blow molding. Our patented Posi-Melt™ technology delivers superior melt quality, faster material changeovers, and increased throughput. With custom designs from 14-260mm and proprietary flight geometries, we optimize polymer processing for automotive, medical device, and electronics manufacturers worldwide.

Our Range of Products

Posi-Melt™ MB Barrier Screws

Posi-Melt™ MB Barrier Screws

  • 60% increased barrel wall exposure
  • Single-channel barrier geometry
  • 14-240mm diameter range available
Posi-Melt™ XLA Mixing Screws

Posi-Melt™ XLA Mixing Screws

  • Patented extensional mixing design
  • Faster material changeover times
  • Low pressure drop, high throughput
Posi-Melt™ Multipurpose Screws

Posi-Melt™ Multipurpose Screws

  • Un-tangential flight geometry
  • Drop-in replacement design
  • Enhanced melt temperature control
Posi-Melt™ Extrusion Screws

Posi-Melt™ Extrusion Screws

  • Custom flight geometry design
  • Pipe, profile, sheet extrusion
  • Tool steel or bimetallic options
High Performance Plasticating Barrels

High Performance Plasticating Barrels

  • Bimetallic construction durability
  • Precision honed close tolerance
  • 14-250mm bore size range
Inject-EX™ Plasticating System

Inject-EX™ Plasticating System

  • Stationary screw design innovation
  • Real-time melt density monitoring
  • Ultra precise shot control system

Frequently Asked Questions

What diameter range do MD Plastics custom screws cover?

Our custom screws are available from 14mm to 260mm diameter, with barrier screws, mixing screws, extrusion screws, and plasticating systems engineered for your specific machine.

How does Posi-Melt™ technology improve screw performance?

Can MD Plastics screws retrofit existing injection molding machines?

What materials are compatible with MD Plastics screws?

What construction materials are available for custom screws?

How long does custom screw design and delivery take?

Does MD Plastics offer technical support after purchase?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Injection Molding

Injection Molding

Custom barrier and mixing screws engineered for precision plastic components across all polymer types with superior melt quality.

Automotive Manufacturing

Automotive Manufacturing

High-performance plasticating screws for injection molded automotive components requiring consistent quality and fast material changeovers.

Medical Device Manufacturing

Medical Device Manufacturing

Precision screws for sterile medical component molding with uniform melt temperature distribution and minimal contamination risk.

Thermoplastic Extrusion

Thermoplastic Extrusion

Custom extrusion screws optimized for pipe, profile, sheet, and film production with enhanced melt uniformity and throughput.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Why Injection Molders Choose MD Plastics Inc

25+ Years of Innovation Excellence

Founded in 1999 by industry veteran Mike Durina with 8 patents, we bring decades of plasticating engineering expertise and proven innovation to every custom screw design.

Patented Posi-Melt™ Technology

Our proprietary screw geometries increase plastic exposure to barrel walls by 60%, delivering superior melt uniformity, faster changeovers, and reduced scrap rates.

Direct Owner-Led Engineering

Founder Mike Durina personally designs custom solutions using advanced software for heat transfer and pressure profiling, ensuring optimal performance for your specific application.

Get Custom Screw Solutions Engineered for Your Application

Connect with our engineering team for technical consultation and custom screw design. Expect a detailed quote with performance specifications within 48 hours.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 3304825100 You can also send us a quick email at info@mdplastics.com