News - E.J.S INDUSTRY CO., LTD

PVC Conical Twin Screw Barrel Selection by Formulation

Do not select a PVC conical twin screw barrel from machine size or calcium carbonate content alone. Send the complete formulation with its unit basis, the product and die, target output, actual temperatures and torque, regrind rate, current screw drawing, and measured wear. EJS publishes four CaCO3 ......

PVC Conical Twin Screw Barrel Selection by Formulation

Do not select a PVC conical twin screw barrel from machine size or calcium carbonate content alone. Send the complete formulation with its unit basis, the product and die, target output, actual temperatures and torque, regrind rate, current screw drawing, and measured wear. EJS publishes four CaCO3 ......

Conical Twin Screw Barrel Size Codes Explained

A conical twin screw code such as 65/132 normally identifies the two nominal screw diameters: 65 mm at the smaller front end and 132 mm at the larger rear end. It does not specify length, spline, center distance, flight geometry or barrel interfaces, so the code alone cannot confirm interchangeabili......

What Is a Conical Twin Screw Barrel?

A conical twin screw barrel has two intermeshing screws whose working diameters increase from the smaller discharge end toward the larger drive end. The matching barrel bores follow that taper. EJS lists nitrided and bimetallic builds for this hardware. Its published data gives a 0.4-0.7 mm nitrided......

Twin screw barrel applications: match the replacement to the process

Twin screw applications fall into different hardware patterns. Compounding, masterbatch and many pelletizing lines often use parallel screws assembled from removable elements with modular barrel sections. PVC pipe, profile and panel lines commonly use counter-rotating conical or parallel systems wit......

Custom twin screw barrel manufacturing: what buyers should approve

Start with an original drawing or a controlled measurement package. Identify which dimensions are nominal and which came from a worn component. Freeze the machine interfaces and application requirements in a manufacturing drawing, then agree on the inspection records before production begins. A samp......