News and articles from Topstar

A 1°C deviation in mould temperature isn’t just a minor flaw; it can impact the quality of the finished product. The Society of Plastics Engineers (SPE) reports that inconsistent mould heating or cooling accounts for 22% of all injection moulding defects, costing US factories tens of thousands of dollars in material waste and downtime annually,… Continue reading How do we acceptance test mould temperature controller to ensure temperature uniformity and stability?

Hydraulic and electric injection molding machines offer distinct process conditions for injection molding. Their differences lie in their mechanical design, with oil pumps and valves versus servo motors and ball screws. Still, the real impact extends to cycle time, repeatability, energy consumption, and part quality. This helps you understand which injection molding machine is best… Continue reading Differences between hydraulic and electric machines in injection molding process

We’ll use the Topstar 460T injection molding machine, a representative all electric injection molding machine, as a reference. This 460T injection molding machine features high injection speeds, precise motion control, and excellent repeatability, making it particularly well-suited for producing ultra-thin components and parts with tight dimensional tolerances. These machines are particularly well-suited for thin-wall packaging,… Continue reading What products are suitable for a 460T injection molding machine?

Injection molding cycle profile optimization, specifically the coordinated control of pressure, holding, and cooling steps, is the most effective tool for production engineers to improve part quality, reduce cycle time, and lower unit cost. Whether you operate a single-unit injection molding line or manage multiple injection molding machines in a single molding facility, optimizing the… Continue reading Injection molding cycle profile optimization: pressure, hold and cooling steps

Low-viscosity resins enable thinner walls, faster filling rates, and finer details in the injection molding process. However, these rheological advantages also present persistent challenges, including flow stagnation, uncontrolled spreading, weld lines, and unpredictable cooling patterns. For plastic product manufacturers, these defects directly lead to scrap, rework, production losses, and customer returns. Therefore, preventing flow stagnation… Continue reading Prevent flow stagnation and diffusion of low viscosity resins in plastic molding machine

Selecting the correct injection molding screw and barrel profile is the most critical decision in packaging injection molding. Packaging components such as thin-walled barrels, caps, closures, trays, and high-speed containers require a delicate balance of rapid plasticization, uniform melt quality, minimal residence time, low shear degradation, and consistent shot-to-shot repeatability on the injection molding machine.… Continue reading Choosing Screw and Barrel Profiles for Packaging Injection Molding

Communication delays between the host controller and servo drives are a common problem in injection molding. In all-electric injection molding machines, even a few milliseconds of delay can translate into measurable errors in position, velocity, and pressure at high cycle rates. Topstar’s TE II all electric injection molding machine embeds process intelligence in the servo… Continue reading Solve the communication delay problem of all electric injection molding machine

Integrating an injection molding robot with the injection molding machine control system transforms the two independent devices into a coordinated production unit, increasing output, improving part quality, and reducing cycle time variability. As an injection molding robot manufacturer, Topstar uses an open underlying control system architecture to enable the injection molding robot and injection molding… Continue reading How to integrate the injection molding robot with the injection molding machine control system?

Short shots, flash, weld lines, and inconsistent part weight—these are symptoms, not the root causes. At the heart of many recurring defects lies the relationship between flow and pressure in the injection molding process. First, we must understand the core facts. First, polymer melts behave differently from water; their viscosity is highly dependent on temperature… Continue reading Troubleshooting Short Shots: Flow and Pressure in the Injection Molding Process

Hydraulic line leaks are one of the most common and devastating field failures in plastic injection molding machine. A small leak can quickly escalate into a slippery and dangerous situation. A persistent leak can reduce press performance, contaminate parts, and force the late shift production line to shut down. Leaks typically manifest as visible oil… Continue reading How to detect and repair hydraulic line leaks in plastic injection molding machine?

When purchasing a mold temperature controller, consider that an improperly sized controller can lead to poor thermal stability, extended cycle times, scrapped parts, and increased repairs. Therefore, a properly specified unit can reduce cycle times through precise thermal control, improve dimensional stability, and save energy through efficient pumps and heaters. Regional factors also play a… Continue reading The Complete Buyer’s Guide to Mold Temperature Controller Specifications and Sizing

When selecting an injection molding machine for your injection molding plant, focus on energy consumption and efficiency. The energy efficiency of injection molding machines directly impacts your overall production costs and operational sustainability. Key features that influence an injection molding machine’s energy consumption and efficiency include its design, drive system, cycle time, and maintenance practices.… Continue reading How to compare injection molding machines based on energy consumption and efficiency?