Pallmann offers look at cryogenic grinding
ZWEIBRÜCKEN, GERMANY - Size-reduction specialist Pallmann Maschinenfabrik GmbH & Co. KG will show cryogenic grinding, the ``Palltrusion'' process to make wood-plastic composite materials and several new pulverizers at K 2004.
The Zweibrucken-based company said its Palltruder can produce 440-4,400 pounds an hour of dry, free-flowing granules with high bulk density. The granules are well-suited for extrusion and injection molding.
Palltrusion uses frictional heat to prepare and dry the feed materials gently. It eliminates intermediate steps. The resulting Pallwood has a moisture content of less than 1 percent.
The wood, plastic and additives are fed continuously into the Palltruder via a gravimetric dosing unit. The mixture is melted equally with frictional heat and pressure. Steam is vacuumed away, then the system pneumatically conveys the material into a granulator, which produces homogeneous, uniform granules.
Pallwood can be processed instantly into finished products or conveyed to a holding bin in front of the production machine, the company said.
Also at K, Pallmann will introduce three new pulverizers under the Polygrinder-System name.
The PKM 600 pulverizes resins such as polycarbonate, ABS or polystyrene at ambient temperatures. It offers simplified feeding and operation, improved grinding and better air flow for temperature-sensitive materials, according to Pallmann.
The PM 300 is designed to pulverize thermoplastics used in compounding or masterbatch production.
The compact system can be integrated easily into existing production lines, the firm said.
The PPK 8 Turbo Mill uses a low temperature to grind materials such as linear low density polyethylene, ethylene vinyl alcohol, PS and polypropylene without using liquid nitrogen.
A new cryogenic system with a counter-rotating turbo mill, called PPST 400, is used to pulverize extremely heat-sensitive materials or produce very fine powder.
On the chunky side, Pallmann will introduce the UltraGranulator PS-B, which grinds up heavy, compact plastic chunks, film waste and rubber. The true slant cut between the rotor and stator knives maintains a constant gap along the entire length of the knives, reducing power consumption, the production of fines and noise.
Pallmann, which employs 700 worldwide, generated 2003 sales of about 50 million euros ($57 million).
The company's U.S. operation, Pallmann Pulverizers Co. Inc., is based in Clifton, N.J.
EGS touts accuracy of thickness gauge
BILLERICA, MASS. - The ShadowMaster will emerge at K 2004.
No, it's not a new superhero, but a film and sheet thickness gauge from EGS Gauging Inc.
ShadowMaster is accurate at fast scan speeds during production of a continuous web such as film, sheet, calendering and nonwovens, the company said. The noncontact, true caliper sensor uses Wonderware software.
Billerica-based EGS will feature ShadowMaster on its newest gauging system, called E.
The company also will unveil its sleek-look, flat-panel operator panel to the European market.
Wittmann provides Web link during K
TORRINGTON, CONN. - Wittmann Inc. will link its auxiliary equipment together through robot controllers at K 2004, via WittLink.
The products will be displayed as work cells, to demonstrate complete auxiliary equipment systems built around plastics processing machines.
Wittmann of Torrington also has expanded its 7-Series pick-and-place robots. Wittmann will introduce its W753, with a payload of 165 pounds, for use on large-tonnage injection molding machines.
The company also plans to show a W710 robot that can hold 11 pounds; a W711 CS3 robot that is based on the W710, but is equipped with three servo-electric drives as standard; and the W721 CS3, the next-size-up robot that has a maximum payload of 22 pounds.
At K, an M7 robot controller will run a fully integrated central system from Wittmann, including dryers and vacuum loaders.
Wittmann claims it is the first manufacturer to display, through its WittLink, a network communication program through its entire range of auxiliary equipment.
WittLink is started through a commercially available Web browser, such as Microsoft Explorer, and gives remote diagnostics, central data management and a graphic display of operating modes and the status of Wittmann peripheral equipment from anywhere in the world, the company said.