Sprue Bushing Information

PERFORMANCE Sprue Bushings^®

PERFORMANCE Sprue Bushings^® are recommended by a variety of resin manufacturers, molders, mold makers, designers and engineers as a product that works, is truly a straightforward, uncomplicated processing aide.

The PERFORMANCE Sprue Bushings^® is available in a number of popular standard sizes, with non standards offered at reasonable prices with quick deliveries.

Many users are so pleased with the overall performance of this product that the PERFORMANCE SPRUE BUSHING^® is now specified in all of the molds they build.

Try one, you will not be disappointed.

Prices on standards are between $275.00 - $300.00
(* Carbide lined slightly higher)

We can also supply with a "wire start" hole only for customer finished internal detail

CALL US WITH YOUR APPLICATION TODAY TOLL FREE 1-800-272-3031

CYCLE TIMES LIMITED BY SPRUE

Mold cycles are often limited or controlled by the length of time needed for the solidification of the plastic sprue. The sprue must be cool enough not to stick, break or tear as the mold is opened. Or, when molding small parts where the parts could be ejected, but the sprue is not solid enough to allow mold opening, there is added time just for sprue cooling. These cycle limiting conditions can be changed by using the Performance Sprue Bushing^®, without any other changes to the mold.

CORROSION & STICKING SPRUES

Many plastic resins, additives, colorants and combinations lead to corrosion and sticking problems with conventional steel sprue bushings. The inherent corrosion resistance and release properties of the copper alloy used in the Performance Sprue Bushing^® offers a significant increase in performance and product life compared to conventional steel sprue bushings.

SPRUES AS ROBOT GRAB POINTS

The sprue is often used as the grab point in robotic removal of parts, sprues and runners. This requires that the sprue be rigid enough to resist the pressure of the robot fingers as well as the extraction forces. With conventional steel sprues this measure is most often met by added cooling time to the mold cycle. The Performance Sprue Bushing^® will again reduce the sprue cool time, without any other changes to the mold. Use of this product will yield more rigid sprues with reduced cool times set on the molding machine timer.

PREVENTING MOLDING PROBLEMS CAUSED BY SPRUES

Molders that use Performance Sprue Bushings^® in a variety of mold and resin applications say they are able to control many sprue related problems. They no longer "just struggle with sprue problems".

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Disclaimer

While the information contained is deemed reliable, no warranties are expressed or implied. For specific information regarding an application please call 1-800-272-3031 or e-mail us at sales@moldstar.com