Synventive Introduces SynFlow® Two-Speed Sequential Valve Gating Hot Runner Technology

How it Works

All of Synventive’s Advanced Flow Control hot runner systems (eGate®, Dynamic Feed® and SynFlow®) are designed to provide molders with more control over the molding process to produce parts with higher quality surface finishes.  SynFlow® is a patent-pending, two-speed pin control technology for cascade or sequential valve gated hot runner systems. The initial opening speed of the valve pin is reduced to prevent an explosive rush of pressurized plastic. The valve pin then opens for the remainder of its stroke at maximum speed to appropriately fill the part.

This two-speed process enables a smoother fill, reducing hesitations and sharp velocity changes, resulting in cleaner parts with excellent surface quality, and  improved process efficiency.
 

The visual defect on the part of the seat Audi	The same part without defects using SynFlow®

“SynFlow is the only hot runner technology in the industry that allows molders this level of control,” said Mark Moss, Executive Vice President at Synventive.  “It  allows users to define the opening velocity of the valve pin, thereby regulating the flow of plastic into the mold at this critical stage, before the pin opens for full velocity and maximum plastic flow.”

This unique, two-speed technology is an industry first and can be used to eliminate surface defects on large molded parts.  Common defects that SynFlow can solve include:

• Pressure alteration marks
• Opposite direct gating marks
• Sink marks after coating
• Reduced adhesion of finishes

The results for molders are clean parts, reduced rejects, and better overall  processing.

System Configuration

Each Synventive SynFlow® system includes the following:

- Hydraulic valve gate hot runner system with 12mm, 16mm, or 22mm
diameter nozzles and actuators with position sensors.

- SynFlow® flow control package including control valves, signal lines for both valve control and position sensors and control unit for up to 8 control zones.

About Synventive

Synventive Molding Solutions, a business of Barnes Group Inc. (NYSE: B), is one of the world’s leading manufacturers of hot runner systems and components for injection molded plastic parts.  Since the 1970’s, Synventive has served  thousands of customers in the automotive, electronic, medical, consumer,
industrial and packaging markets.

Synventive has manufacturing facilities in North America, Europe and Asia, each with its own research and development, manufacturing and design departments.  North America is served by the company’s Peabody, Mass. site.  Europe is served by the company’s facility in Bensheim, Germany, while Asia is served from Suzhou, People’s Republic of China.  Additionally, the company has sales and service representatives in 26 countries.

For more information, please visit www.synventive.com.