PT ZONE: Gas & Water Assist Machines

Enhanced Gas-Assist Molding Shortens Cycles, Cuts Downtime
A pair of new technologies, one proven at several molders in Europe and a second just now ready for commercialization, is said to improve on current gas-assist injection molding techniques with up to 30% faster cycles and up to 90% reduced downtime for maintenance of molds and gas injectors. More (+)
Injection Molding at NPE: Speed, Automation & Integration Take Center Stage
Hot buttons at the show will be multi-component molding, in-mold labeling/decorating (IML/IMD), in-mold assembly, medical molding, liquid silicone rubber (LSR), micro-molding, and high-speed packaging. More (+)


MOST RECENT CONTENT: Gas & Water Assist Machines

Making Parts Lightweight & Strong with New Technologies
1/27/2012Plastics Technology

One of the driving forces in technology is weight reduction.

NPE2012: The Big Picture -- Themes for Growth at the Big Show
1/27/2012Plastics Technology

In our last issue we examined three big themes that will serve as the foundation of many new technology developments at NPE 2012, April 1-5 at the Orlando Convention Center: sustainability, energy efficiency, and automation.

Gas-Assist Technique Helps Solid Parts, Too
8/23/2011Plastics Technology

Bemis Manufacturing Co., Sheboygan Falls, Wis., a custom molder known for its expertise in coinjection, has found a way to reduce the cost of solid parts by using a well-known gas-assist molding technique—without the gas.

Injection Molding at NPE 2003
6/7/2010Plastics Technology

Show goers will see an electric injection machine in nearly every press maker’s booth this year, and electric/hydraulic hybrids in several.

Gas Assist Works for Thermosets and Smaller Parts, Too
6/7/2010Plastics Technology

The first gas-assist injection molding process for thermosets, and the use of gas assist for molding smaller parts were two new areas explored in papers presented at the 13th International Molding Conference and Exhibit held in February in New Orleans.

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OVERVIEW:
Gas & Water Assist Machines

gas-waterassistIM.jpg

Gas assist injection molding is process by which nitrogen is injected into the mold to create a hollow channel within a part. Among the reported benefirts are lower part weights and material costs and faster cycles. Water-assisted injection molding is a newer to mold hollow or partly hollow parts. It’s basically similar to gas-assist molding as a means to core out thick sections. But water-injection technology (WIT) comes with a big advantage: direct cooling inside the part


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» Electric Injection Molding

Learn the basics or discover more about electric injection molding.

» Plastics Conveying

Watch video, download datasheets and more in the Plastics Conveying Knowledge Center.

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