Evaluate Valve Gate
Valve gate systems, the alternate solution, offer injection molders increased flexibility and process opportunities that cannot be achieved with the use of thermal gate systems. […]
Evaluate Thermal Gate
The first to enter the market and still the most common are thermally operated. […]
Introduction to Current Nozzle Technology
Problems with some hot runner technologies are that heat loss through the nozzle can be 40 percent. The heater overheats plastic at the middle of the nozzle. […]
How do you go about evaluating hot runner nozzles?
How do you go about evaluating hot runner nozzles? First, evaluate the entire molding system—including part design, plastics material, part weight, cycle time, mold, runner, gates (valve or thermal), nozzles, temperature control and molding machine characteristics. […]
We can do Injection Molding in computer
Moldflow Plastic Insight (MPI) is a computer simulation of injection molding that “helps us begin to understand what is going on inside the mold,” […]
Electric Valve Gating in hot runner system
Hot runner systems have traditionally used either pneumatic or hydraulic actuation to open and close valve gates. […]
Thinner Walls and Higher Outputs need hot runner system
In food packaging, the trend has been toward increasingly thinner walls and higher outputs. To accommodate this trend, […]
Advanced Melt Homogeneity in hot runner system
When dealing specifically with closure and consumer applications, part and production quality—along with color change performance—are major considerations. Maintaining optimum melt homogeneity is key to achieving this. […]
Better Thermal Uniformity in hot runner system
The manifold is an important component in delivering a consistent and homogeneous melt to the cavity. Today’s industry standard includes naturally balanced melt channels (both with and without level changes), […]
Selection Criteria on hot runner temperature controller
Hot runner temperature control and proper hot runner system management can easily get lost in the day-to-day flurry of tool changes, process setup, equipment issues and myriad other urgent matters. Compounding this challenge is the need to onboard and train new employees on why things are done a certain way and not just how. Here [...]