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Wilmington Machinery introduces medium-pressure injection molding machine

Clare Goldsberry

August 18, 2016

2 Min Read
Wilmington Machinery introduces medium-pressure injection molding machine

Wilmington Machinery (Wilmington, NC) has launched the new Lumina MP800 medium-pressure injection molding machine to fill the void that exists between high- and low-pressure injection molding systems.

The company's Lumina line (pictured) is augmented with a medium-pressure injection molding machine.

Russ LaBelle, President of Wilmington Machinery, told PlasticsToday that the new Lumina MP800 allows molders to enjoy the benefits of two-stage injection, and the use of some gas, if desired, to reduce part density. “It allows molders to make thinner parts that otherwise would not be possible with low-pressure structural foam, which also results in faster cycle times,” LaBelle said. “Really the benefit of this new machine is two-fold: Less raw material is used and lower cycle times are achieved.”

The Lumina MP800 is capable of molding both solid and foamed parts with density reductions from 5 to 50%, depending on the foaming method and type of gas. Molds are either cold- or hot-runner types and typically have aluminum cavity plates for faster cycles or gas assist for further cycle reduction for improved definition. The machine's control system is designed to meet the needs of all process types—the equipment is fully capable of processing commodity and engineering grades of thermoplastic materials, including recycled materials up to 100%.

The two-platen press features a linear bearing support and guidance system, a 98-x-68-in. mold space and 108-in. stroke.  It has a clamp speed of 2000 inches per minute and hydraulic ejection, and can achieve cycle times between 30 and 90 seconds. An electric extruder drive and available variable-frequency press hydraulic power unit make the MP800 energy efficient, said the company’s information.

Applications for the new Lumina MP800 include material handling (pallets, bins, crates), enclosures (utilities, electronics), automotive (interior, exterior parts) and recreational products.

Since its founding in 1972, Wilmington Machinery has been building high-performance, low-pressure structural foam molding machines. In addition, the company has built custom extrusion, thermoforming and industrial blowmolding machinery, along with a primary line of high-capacity rotary blowmolding systems for polyolefin monolayer/multilayer barrier blowmolded packaging.

About the Author(s)

Clare Goldsberry

Until she retired in September 2021, Clare Goldsberry reported on the plastics industry for more than 30 years. In addition to the 10,000+ articles she has written, by her own estimation, she is the author of several books, including The Business of Injection Molding: How to succeed as a custom molder and Purchasing Injection Molds: A buyers guide. Goldsberry is a member of the Plastics Pioneers Association. She reflected on her long career in "Time to Say Good-Bye."

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