Rauwendaal Extrusion Engineering

10556 Combie Rd. PMB 6677
Auburn, CA 95602-8908 US

Connect

As Seen In Plastics Technology

How to Collect & Interpret Process Data in Extrusion: Part 1
The first installment of this three-part series focuses on proper use of a data- acquisition system.

How to Collect & Interpret Process Data in Extrusion: Part 1
The first installment of this three-part series focuses on proper use of a data- acquisition system.

Extruder Upgrades Pay Off Big for Sheet Processor
A $65,000 upgraded paid for itself in less than a month.

New Frontier for Single Screw R&D: Mixing & Melting by Extensional Shear
Extensional shear generally has been associated only with twin-screw extruders. However, I am now convinced it can be done with a single moving force (screw) by changing the geometry of the flow field perpendicular to the direction of flow.

Figure 2

Tips and Techniques: Boosting Extrusion Productivity - Part III of III: Trim Your Material & Energy Costs
Material cost is the largest cost factor in most extruded commodity products, so processors should be motivated to reduce these expenses.

Boosting Extrusion Productivity-Part II of III: Optimize Product Changeover & Purging
Extrusion processors typically run a number of different products and resins.

Typical wear pattern

Look Out for Metal-to-Metal Wear
Wear that occurs as a result of metal-to-metal contact in extruders is quite common.

Typical barrel temperature profiles by zones

TIME TO LEARN ABOUT Dynamic Optimization of Extruder Barrel Temperatures
Determining the optimum barrel-temperature profile is one of the most important tasks in extrusion.

Cooling Screw

New Cooling Screw For PLA Foam
The HHT (high heat transfer) cooling screw from Rauwendaal Extrusion Engineering Inc. in Auburn, Calif., has recently been modified with a flight configuration designed specifically for PLA foam.

Dot or

What's Causing Your Gels?
 Gels are a common quality problem in extrusion of clear film and tubing less than 0.005 in. thick.

NPE Newsfinder: Extrusion
NPE will show higher outputs of practically everything, as advances in grooved feeds, servo drives, screw torque, mixing screws, dies, and downstream cooling, cutting, and handling make everything run faster.

Single-Screw Compounding Is Learning New Tricks
While twin-screws get most of the glory, a quiet revolution has been taking place in single-screw compounding. In the past six to 12 months, some half-dozen new dispersive mixing elements have gone into commercial production, and more are on the way.

Product Categories of Rauwendaal Extrusion Engineering

Consultants--Design, Manufacturing, Purchasing
Cylinders (plasticating) and Liners
Injection Molding Non-return Valves
Product & Tool Design, Analysis Software (CAD/CAM/CAE)
Screws (Plasticating)
SPC, SQC Systems
Training Programs in Plastics
Troubleshooting, Problem Solving Systems