Global Plastics Injection Molding Machines
The precision manufacture of plastic parts, components, and products through the injection molding process requires the right equipment for efficiency and performance. Global Plastics has become a leading provider in North America for injection molding services by assembling a fleet of more than 70 injection molding machines. We evaluated many options against the kind of efficiency standards we wanted to achieve in our operations and settled what was a clear choice for our goals: The NISSEI™ brand of injection molding machines. What the NISSEI™ brand offers is a top-notch machine in any size needed for manufacturing processes to accommodate any project. The reliability of these machines is unmatched in producing quality injection molded plastic products and parts. To discuss your injection molding needs, call Global Plastics at 800-783-7750.
How Injection Molding Machines Work
What a thermoplastic injection molding machine actually does is first get hot enough to melt pelletized plastic resin so it can then be pushed or “injected” into a metal mold that has been “tooled” or cut to produce the desired shape and size for a plastic part, component, or product. The mold is in two halves that must be clamped shut while the injected plastic resin cools and hardens enough for the mold to be opened and the plastic piece ejected.
This holding the mold shut process is why injection molding machines are described by how much clamping pressure is needed to keep a mold shut. The larger the press and molds used, the more clamping pressure is needed as measured in tons of pressure. The fleet of injection molding machines at Global Plastics ranges from 40 tons of clamping pressure all the way up to 1,000 tons of clamping pressure. In other words, whatever the job may be, we have a machine that can handle it.
Injection Molding Machines: The Main Types
Think of injection molding machines as falling into three broad categories described below:
Hydraulic Injection Molding Machine:
The standard hydraulic machine usually has a constant-speed motor and a variable-displacement pump to control the flow of oil in the hydraulic system of the presses. The more advanced machines in this category have a servo motor to drive the hydraulic pump and are called servo-driven or servo-hydraulic injection molding machines.
All-Electric Injection Molding Machine:
Although the name implies “only” electricity being used, it’s a little more complicated than that. A molding machine can be considered all-electric if at least the three main axes (clamp movement, injection, and metering/plasticating) are driven by servo motors. The other three axes (nozzle touch, ejection, and mold-height adjustment) can still be driven by hydraulics in this type of machine.
Hybrid Injection Molding Machine:
Changing the mix of axes and how they’re driven can produce a hybrid machine in which only one of the main axes is electric-driven.
There is debate about what type of machine is the “greenest” in terms of energy consumption. The all-electric machines tend to consume the least amount of energy overall, though the difference in energy consumption between servo driven machines and all-electric machines is quite small. At Global Plastics, while we have machines that fall into every category, in our many years of experience we have found the servo-driven hydraulic injection molding machines are the ones with the highest performance in terms of reliability and quality production, which plays a role in the ultimate cost paid by clients for their molded plastic parts and components. You’ll also sometimes hear reference to horizontal machines versus vertical machines. Referring to the orientation of the presses. Vertical machines are rarely needed, which is why probably 99% of all injection molding machines are horizontal.
Global Plastics: Your Trusted Partner for Quality Injection Molding Services
We’ve worked with a wide range of industries and markets since our founding in 1992, including automotive, medical, food packaging, and commercial companies to develop, design, and execute high-precision injection molding services to meet needs within a collaborative framework based on trust and mutual respect. We bring decades of knowledge and experience to the table you’ll find invaluable to ensure your requirements are met in a professional manner with efficiency and affordability in mind. Every solution we provide is a custom solution tailored to each customer.
If it’s time to work with a true partner to meet your injection molding needs for plastic parts, components, or products, Global Plastics is ready to start a conversation with you. You can learn more by getting in touch with us using the contact us form on our website or feel free to call us directly at 800-783-7750 to discuss your needs and get a quote for our custom injection molding services.