Featured Articles

The long and short of an 
unscrewing mechanism

By Clare Goldsberry
Published: April 20th, 2010

If necessity is the mother of invention, it surely applies to the PERC system. Its inventor needed a way to solve a huge problem for a customer—and invented it.

Unscrewing molds can be a bear to operate. Conventional unscrewing molds are hydraulically driven, and the number and size of the threads on the part dictate the number of revolutions the core must rotate before the mold can open. The number of rotations necessary then determines the length of the hydraulic rack and the size of the hydraulic cylinder.

TPE North American Resin pricing, April 12-16: PE, PP drop $0.03/lb

By PlasticsToday Staff
Published: April 20th, 2010

Polyethylene (PE) spot prices fell and supply increased, with market sentiment shifting as spot ethylene prices exhibited weakness. Plastics spot-trading platform, The Plastics Exchange (TPE), noted that PE prices on average gave back $0.02-$0.03/lb, erasing gains made earlier in the month. Although some spot railcars have been seen offered at prices equal to late March levels, producers are still seeking to raise April contracts by $0.05/lb.

Herzog expands its North American reach

By MPW Staff
Published: April 20th, 2010

Just 18 months after expanding its market presence into the United States, Herzog Injection Technology Inc., a leading manufacturer of shut-off nozzles for injection molding, has named another sales representative company in North America to help it spread even further.

Sumitomo (SHI) Demag shifts German sales and distribution network

By PlasticsToday Staff
Published: April 20th, 2010

Sumitomo (SHI) Demag Plastics Machinery GmbH (Schwaig, Germany) has relocated its northern sales and distribution center from Hamm in North Rhine-Westphalia to its center of excellence in Wiehe, Germany, just over 300 km to the east. In the future, all higher-level marketing and service activities will be coordinated from that location for the German states of Saxony, Saxony-Anhalt, Thuringia, Brandenburg, Mecklenburg-Western Pomerania, Schleswig-Holstein, North Rhine-Westphalia, Hesse, Bremen, Hamburg, and Lower Saxony.

Volcano keeps Europeans away, but Chinaplas opens on high note

By Stephen Moore
Published: April 19th, 2010

The thousands of European plastics processors, and employees from exhibiting suppliers, who usually attend Asia's largest plastics tradeshow almost certainly won't arrive before the show is over, but Chinaplas officials say they still expect record attendance at the show this week. The show opened on Monday, April 19 and runs through this Thursday.

Plastics extrusion: Embossed microstructures offer decorative effect options

By Robert Colvin
Published: April 19th, 2010

Film or sheet requires a lotus look, sharkskin effect or something more? Better temperature control of chill and embossing roll surfaces could soon help extrusion processors add even more value to their products. The recent biennial plastics technology colloquium conducted by Germany's Institute of Plastics Processing (IKV; Aachen) provided a number of presentations targeting extrusion difficulties and possible methods to circumvent them.

Blowmolding: Returnable PET 5-gal containers take the heat

By Stephen Moore
Published: April 19th, 2010

Riding on the BPA debate, blowmolding machinery manufacturer Nissei ASB Machine Co. (Komoro, Japan) is promoting returnable 5-gal PET containers as an alternative. "Even if science finally says 'no problem,' public opinion may have already decided against PC for water bottles," note officials there.

Rotomolders grab license for CARB-approved rotomolding technology

By Matt Defosse
Published: April 19th, 2010

Custom rotational molder Centro Inc. (North Liberty, IA) has added two of its peers to the small group of processors as yet licensed to use Centro's RotoLoPerm multilayer fuel tank processing technology, which was developed in 2004. Both the California Air Resources Board (CARB) and the U.S. Environmental Protection Agency (EPA) credit this technology with passing their low-evaporative-emissions regulations. In March 2009 Centro received its Certificate of Conformity from EPA for RotoLoPerm; it's had CARB certification since late 2006.

Replacing downtime with production time

By PlasticsToday Staff
Published: April 19th, 2010

Tooling Technology is marketing a line of quick-change devices to address Lean manufacturing among molders. The Segen Quick Change system replaces the older nuts, bolts, fasteners, and hand tools required, which significantly reduces the time wasted on industrial setups, changeovers, workholding, clamping, fixturing, and alignment.

China's packagers competing for domestic and global share

By Stephen Moore
Published: April 16th, 2010

Chinese processors of packaging face a variety of challenges, both market-driven and regulatory, as they strive for a piece of one of the world's fastest-growing markets. They are also increasingly enjoying success on the global stage, as was evident at the Sino Pack show in Guangzhou in March.

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