Thermoplay expands hot-runner portfolio with new nozzles and bushings
By Karen Hanna
An injector appropriate for hard-to-process materials, including recycled resins such as PET, is among a host of products Thermoplay has recently added to its portfolio of hot-runner technologies. The company also recently released bushings designed as options for a second set of nozzles, and it added new open-side-gate injection nozzles to its porfolio.
All products are distributed through Manner.
The injector manages variations in temperature at the mold, ensuring that the resin experiences temperatures no hotter than 72 degrees Fahrenheit higher than the melt temperature, making it appropriate for materials especially vulnerable to degradation. Compared with other technologies that target recycled materials, its tip and valve-gate system’s pin guide are especially designed to allow less thermal dispersion.
The design of the pin guide near the gate area provides enhanced sliding of the pin, ensuring an aesthetic injection point with optimal mechanical performance.
The injector provides thermal stability, while protecting the structural properties of polymers in the hot runner.
D-Bushings for TF hot-runner nozzles
Offered as an option for Thermoplay’s TF hot-runner nozzles for multi-cavity molds, the company’s new D-Bushings can reduce maintenance and installation costs, and facilitate faster and easier cavity-plate changes, when used in applications that require frequent swaps. Designed for use in high-cavitation molds and the manufacture of small to medium-sized parts, D-Bushings enhance the stability and reliability of the molding process and reduce energy consumption, according to Thermoplay; they also prevent leaks.
To protect against leakage, the D-Bushings have a double sealing ring along their outer diameter. This creates a barrier that increases the nozzle insulation and reduces thermal dispersion. It also strengthens the nozzles and protects the internal components from wear.
The design allows for fast, easy, accurate mounting and disassembling of the cavity plates, as well as wide tolerances in the layout and machining of the nozzle seating in the mold. A cable outlet in the middle of the nozzle body allows for replacement of the heaters, thermocouple and tip without disassembling the injection system.
The TF nozzles come in 17mm and 23mm diameters and can handle a wide array of resins.
New TFS hot-runner nozzles
Designed especially for the manufacture of parts that require a cosmetic injection point or angled injection, the new open side-gate TFS hot-runner nozzles can be used to make a range of products, including syringes, caps and closures, tubes, and electronic and technical components. They work with most commercially available resins, including PC, PP, HDPE, high-impact PS, polymethyl methacrylate and polyoxymethylene, and are available in two formats: the TFS-Linear and TFS-Radial.
The TFS-Linear comes equipped with 2+2 or 4+4 parallel nozzle tips, with minimum injection-point spacing of 16mm. The nozzle is designed so that it can compensate for the effects of thermal expansion along its length. The cylindrical sealed area between the nozzle tip and cavity ensures maximum reliability during the injection phase.
The TFS-Radial features hot-runner nozzles with one, two or four nozzle tips.
Direct side-gating eliminates the creation of sprues and the time and costs associated with removing them; it also simplifies the planning, design and maintenance of compact molds.
The attachment system makes both the radial and linear versions easy to install or remove rapidly. The nozzle tips can be easily replaced or maintained directly on the machine while they are cold without disassembling the mold.
Karen Hanna, senior staff reporter
Contact:
Manner USA Inc., Lawrenceville, Ga., 770-449-1820, www.maenner-group.com
