Screws, barrels and tips, made in the USA

We design, repair and build screws, barrels and screw tip assemblies for injection molding, blow molding and single-screw extrusion, for every make and model.

Book a free measurement

Built around your resin, not a catalog

Wear, color changes, unmelts and long recovery times usually trace back to the screw. We engineer each assembly around the material properties, the processing conditions, the wear environment and the performance you need.

Injection molding, blow molding, single-screw extrusion and custom processing.

A Plasticset technician measuring the flights of a large injection screw — Measuring an injection screw in the shop.

From measurement to a new screw

MeasureWe measure the screw and barrel on site at no charge, scheduled around your preventive maintenance.
Capture the processWe work with your technical team on the resin, the processing conditions and the wear you are seeing.
Design or repairEach screw, barrel and tip assembly is engineered for that material, process and wear environment.
Build in the USAParts are manufactured in our facility in the USA, for any make and model.

BARR

Screw designs

USA, since 1976

Robert Barr, Inc. designs screws for extrusion, injection molding, blow molding and blown film. Its founder is in the Plastics Hall of Fame.

BARR VBETVariable barrier energy transfer mixing screw
E.T. screwEnergy transfer design for high rates, low wear and low energy
BARR-3Energy-efficient barrier channel design
Fluxion MixerLow-shear cavity transfer mixer, with a non-return valve for injection

Ask about BARR BARR website

Book the free measurement

Tell us the machine, the screw diameter and when your next maintenance window is. We will schedule the visit around it.

Book a free measurement or call (210) 954-5450