R.Dray.com - Serving The Plastic Industry With Advanced Technology THE INJECTION CONTROL UNIT (ICU) This is the future of injection molding, click to see and download animation... description Click Here Repair Service We offer emergency repair from broken screws to total encapsulation. Our rebuilding process incorporates state of the art PTA welding along... Email Experience --Since the beginning R. Dray Mfg. has been dedicated to becoming the go-to manufacturer that serves the plastic industry. Our unique experience in design...

emergency repair from broken screws to total encapsulation. Our rebuilding process incorporates state of the art PTA welding along with our own flight finishing process... Mfg. has been dedicated to becoming the go-to manufacturer that serves the plastic industry. Our unique experience in design, processing, and manufacturing enables us to fully... service our customers. This level of experience and manufacturing capability is unsurpassed in the plastics industry. Our designs are guaranteed to outperform any competitors design...

Screw Design in Injection... SCREW DESIGN IN INJECTION MOLDING Intent - The author in this paper is describing the observed differences between plastics processing... in the Extrusion and Injection Molding Industries. These observations were made during thirty- seven years of plastics processing in the Extrusion Industry and eight in the Injection Molding... Industry. Quality Control - Plastics processing requirements in Injection molding are similar to the requirements in the Extrusion industry. Many of the terms are different...

Under the All Purpose... THE ALL PURPOSE VALVE (APV) Ideally a Non-return valve s function is to close after the screw plasticizes a selected amount of resin (shot size) so... that this plasticized resin can be forced (injected) into the mold. The intent of this paper is to describe how the most widely used non-return valve types work and show the advantages... and is still used in many Newtonian fluids and applications. Closure in this valve design is accomplished by reverse flow during injection, created by forward movement of the screw...