Plastics Technology - Dedicated to improving Plastics Processing.
Issue link: http://pty.epubxp.com/i/802323
Three new hot-runner components are available from HRSflow of Italy (offices in Byron Center, Mich., and Windsor, Ont.). First is the new Three-Layer Tip, a nozzle tip made of three materials, with no coating. One of the materials is a copper bushing inside the flow channel to improve thermal conductivity. It's said to provide increased temperature at the gate to improve processing of mate- rials such as glass-filled compounds. The new design is also said to reduce wear of the nozzle tip and eliminate black spots in parts. The new tip is aimed at automotive lighting and other parts with high cosmetic requirements. Second, the new Pressure Block (yellow components in the photo) is made of materials with low heat conductivity. It is positioned between the hot-runner manifold and the mold to increase clamp-plate stiffness and provide an optimal thermal profile along the whole hot runner. The main feature is its flexible positioning without negatively affecting the thermal profile of the hot-runner system. Third, the new Thread Safe Kit is said to simplify routine maintenance, especially when processing materials such as PMMA and PC. A special bushing between the nozzle and manifold reportedly eliminates thread seizing, thus allowing for easy nozzle removal without thread damage. 855-477-3569 • hrsflow.com The Micro Medical from Guill Tool & Engineering, West Warwick, R.I., is a new extrusion crosshead that uses micro- fine adjustment screws for precise concentricity adjustment. Precision of concentricity reaches 0.008 in. or finer per revolution. This single-point concentricity adjustment is a unique Guill feature for extrusion of thin-walled and precision-ID/ OD medical tubing. One adjustment bolt controls 360° of adjustment. The Micro Medical crosshead includes a patented cam-lock deflector for quick changeovers. It features a residence time of 1 min at 0.5 lb/hr material flow. Max. die ID is 0.250 in. Additionally, the Guill Micro Medical crosshead offers high flexibility. It not only accepts both vacuum and micro-air accessories, but also is suited to pressure and sleeving applications. Fluoropolymer designs are available upon request. 401-828-7600 • guill.com INJECTION MOLDING EXTRUSION Hot-Runner Enhancements Ease Processing & Maintenance Crosshead Permits Single-Point Concentricity Adjustment n s i g n E Q U I P M E N T ENSIGNEQ.COM | 616.738.9000 | SALES@ENSIGNEQ.COM • SYSTEMS INTEGRATION • CONTAINER FILLING/UNLOADING • MATERIAL CONVEYING • ADVANCED DUMPING TECHNOLOGY • WEIGH SYSTEMS • MIXING AND BLENDING Smart Solutions To Keep You Moving! BULK MATERIAL H A N D L I N G S Y S T E M S E N S I G N D E S I G N S & M A N U F A C T U R E S @plastechmag 63 Plastics Technology N E W P R O D U C T S F O R P L A S T I C S P R O C E S S I N G