At Diamond America, we know that the screw is the heart of every plastic and cold feed extruder. Each screw is engineered specifically to handle the exact properties of its feed material in a way that produces a consistently uniform, high-quality end product. Different screw pitches, depths, and configurations are designed to cater for the …
In response to a specific customer requirement, Diamond America engineers had to challenge convention and rethink the design of a monolith die. Commonly used for extruding catalysts and some food products, a monolith die produces an outer profile that contains many channels, separated by thin walls. The final product is reminiscent of a honeycomb in …
Seals are an essential component of our oil-filled gear boxes that we design and manufacture in-house for all of our cold feed extruders. In our continuing quest to improve the efficiency of Diamond America extruders, we have stepped up our game in the use of seals. Working in conjunction with a major supplier of seals …
Seal Design Innovations Help Reduce Machine Maintenance and Downtime Read More »
Machining special shapes such as complex extrusion dies, or the grooves in barrel liners, is accomplished by Electrical Discharge Machining or EDM. A small wire laces through the steel, cutting it with very precise accuracy to tolerances of .0004. Parts formed using the EDM process have a very distinct color and surface finish. Smooth to …
Diamond America is pleased to introduce our first cold feed extruder with a vented barrel. Formerly, venting in a cold feed extruder was achieved by removing a batch of extrudate into a hopper or chute and pulling a vacuum on the material for a calculated period of time. Borrowing from the thermal plastics process, internal …
Cold Feed Extruder Venting for Continuous Production Read More »
Extrusion process temperature control is crucial for many materials, especially those dealing with sensitive ingredients in the food and pharmaceutical industries. That’s why Diamond America engineers developed Serpentine Flow to provide better temperature uniformity, more quickly and continuously, without any dead spots along the barrel. We’ve received a lot of questions about how our Serpentine …
[VIDEO] – See How To Get Better Extrusion Thermal Control with Serpentine Flow Read More »
Across industries and materials, we’ve found that maintaining temperature with materials during the extrusion process has a direct impact on the bottom line. The problem is that regular screw extrusion systems heat or cool the barrel from one end to the other, so there is always a temperature gradient, even across a ‘controlled’ temperature zone. …
How to Improve Extruder Barrel Thermal Control for Faster Process Time Read More »