Shutoff Nozzles
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SEP Power Operated Shut-Off Nozzle
Comparing to the spring operated nozzle, the injection hole of the power operated nozzle can be opened at any time without any pressure lost. Opening and closing of the nozzle is controled by hydraulic or pneumatic advise. The reliable shut-off system separates the melt flow at a predefined point determined by the process. The control of opening and closing is integrated into the unit and very compact. The position of the lever can be choosen at any position. It can be manipulated also by pole or cable. If the melt pressure exceeds 600 bar, the nozzle opens automaticaly.(safty device). Our system is standard wear protected. All hydraulic ...
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(Mini-Shut™) Automatic Shut-Off Nozzle Tip
Theory vs. Reality Control of the Melting process depends on a number of factors including the proper screw and NRV design, and setting variables such as back pressure, barrel temperatures, screw speed and melt decompression. If we could eliminate the need for Melt Decompression which is used to eliminate drooling and stringing, the process becomes more stable and many surface imperfections become obsolete! Mini-Shut™ FEATURES 1. Easy to Install and Remove 2. Inexpensive 3. Fits on Virtually All Nozzle Bodies 4. Designs for All Machine Sizes-Applications 5. Operate the Clamp and Screw Simultaneously 6. On the Shelf Stock Item 7. Low Pressure Drop Low Shear 8. ...
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SES Spring Operated Shut-Off Nozzle
The needle which moves axially in the nozzle is held in the closed position by the force of the spring. The melt pressure, coming out of the extrusion unit pushes back the needle and opens the hole for injection at 180 bar. After the injection process and pressure decrease under 80 bar, the nozzle is closed again, according to the movement of the spring. Spring type nozzles are only limited suitable for charged material like glasfiber. Our system has a standard wear protection. Advantages of the SE shut-off nozzle Single hole technology The melt is led central by the nozzle needle Minimal pressure drop Optimised ...
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