Anti-Drool Sprue Bar Device

With an eye on advancing molding technology to provide cost-effective solutions, MDi’s patented Anti-Drool Sprue Bar Device was specially designed for stack molds.
Our Anti-Drool Sprue Bar Device stops material drool through use of a specially designed Machine Nozzle tip that, upon decompression, employs a steel ball check to automatically seal off the material flow, thus preventing any material leakage from the Sprue Bar.
When a mold opens, the material often “drools” out due to pressure in the system. This could account for a tremendous amount of material lost over time, which can be costly, especially in high production tools.
Use of the Anti-Drool Sprue Bar Device results in a more sustainable, cleaner and lower maintenance system reducing downtime due to clean-up.



Product Features

  • No internal springs or components to contaminate or break
  • Dual engagement surface action assures perfect alignment between the sprue bar and molding machine
  • Anti-Drool technology is located between the machine nozzle and sprue bar, which will keep molds running. No messy cleanups needed
  • No material waste equals more cost savings
  • This device can also be used on hot runner systems running on horizontal injection presses with a vertical clamp
  • Compact and easy to install
  • Can be designed to retrofit on existing, non-working systems

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Hot Runner Systems made in the U.S.A.

MDi is a world-leading American manufacturer of Hot Runner systems and components with the capability to develop custom and innovative solutions for plastics Injection Molding. Established in 1984, MDi continues to offer experience in the design and manufacturing of complete, internally heated and balanced precision Hot Runner systems, Valve Gate systems, Sprue Bushings, Molding Machine nozzles, Filters, and MDi’s unique system products and controls. All of our components are in-house designed and manufactured in our facility at St. Charles, IL, with a focus on quality and reliability.