News and articles from Topstar

A 90 ton injection molding machine offers low clamping force, yet its size is sufficient for processing a wide range of multi-cavity consumer product parts, miniature appliance housings, and structural components. It is often an ideal choice for parts with moderate projection areas and wall thicknesses, as well as mold designs that require a stable… Continue reading Under what circumstances can a 90 ton injection molding machine bring better molding results?

Many medical device recalls stem from component failures, which can often be traced back to inaccurate injection molding processes. For a client I work with that produces blood glucose meter panels, this risk is particularly acute. A dimensional deviation of even 0.1 mm can cause internal sensors to misalign, leading to inaccurate blood glucose readings… Continue reading Medical Injection Molding Case Study: Blood Glucose Meter Panel Production

Mid-sized injection molding plants lose tens, if not hundreds, of thousands of dollars annually due to flash—the thin, excess plastic that seeps through mold crevices. This translates into not only scrapped parts but also rework time to trim parts, premature mold wear, and rejected orders from quality-conscious customers. As a professional injection molding machine manufacturer,… Continue reading How to solve the problem of flash in injection molding?

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