PolyOne Corp. expanded its family of color additives with the introduction of Stan-Tone EP products for elastomers and rubber. Also new is an online color-selection system.
Stan-Tone EP color additives are based on an ethylene propylene diene monomer binder to make them more compatible with elastomers than standard binders; that improves dispersion in compounds for hose and tube, wire and cable and other markets. General-purpose and high-performance grades are available. Cleveland-based PolyOne claims the additives also provide better color and rheological consistency and longer shelf life.
The firm's color selector displays all colors in the entire Stan-Tone product line offered by PolyOne's Performance Additives group. It features technical information for each color, including pigment type, color index and light fastness.
Tel. (440) 715-7089, fax (440) 715-7070, e-mail [email protected] polyone.com.
Extrusion Master 3 helps simplify setup
Eurotherm/Barber-Colman of Leesburg, Va., said its Extrusion Master 3 controller simplifies setup and makes it possible for an extrusion company with little or no knowledge of process-control theory to optimize extruders and melt pumps.
EM-3 includes an adaptive, automatic-tuning pressure-control loop that accounts for variations in materials and machinery to make a consistent product. Also, EM-3 allows custom HTML Web pages to be loaded into the control system.
Any Web browser then can be used to view the embedded page through the EM-3's Ethernet network. The Web loader uses an interface that guides the user through moving files from a personal computer to the EM-3 control system.
Tel. (703) 669-1324, fax (703) 669-1300, e-mail [email protected] eurotherm.com.
TPVs can withstand higher temperatures
Zeon Chemicals LP has commercialized a new family of heat- and oil-resistant thermoplastic vulcanizates called Zeotherm TPV.
The Louisville, Ky., company said the elastomers can withstand heat up to 302Ã¸ F. They offer the feel and performance of thermoset rubbers with the processability and recyclability of thermoplastics, Zeon claims. Under-the-hood automotive parts such as seals, boots and hose and industrial goods are targeted for the TPV products since they resist a range of fluids at a consistently high temperature.
Tel. (800) 735-3388 or (502) 775-2000, fax (502) 775-2055, e-mail [email protected]
B.A. system designed to replace hydraulics
B.A. Die Mold Inc. introduces its PERC System, which stands for programmable electric rotating core, as a replacement for hydraulic systems used for unscrewing molds. PERC also improves cycle times and control, according to the company.
The Aurora, Ill., mold maker specializes in runnerless, threaded and unscrewing molds.
Tel. (630) 978-4747.
Screw can handle multiple materials
Screw and barrel maker New Castle Industries Inc. has introduced a new injection molding screw, the MultiMelt.
The barrier screw is designed for custom molders that run a variety of materials, including virgin, pre-colored or color additives. MultiMelt allows for reduced-melt temperatures, faster mold-cooling cycles and faster cycle times.
The mixing section provides better mixing without degrading the plastic, according to the company in New Castle, Pa.
Tel. (724) 656-5600, fax (724) 656-5620.
BASF process joins plastic parts to metal
Researchers at BASF AG have developed a better, mechanical way to join molded plastic components and sheet metal, according to the resin maker in Ludwigshafen, Germany.
BASF is pitching ``collar joining'' as an alternative to an overmolded assembly. It works by mechanically pressing a collar protruding from the metal component into the plastic component.
An undercut on the collar ensures that the metal remains firmly anchored into the plastic part. The process uses no heat, the company said.
BASF claims the process gives designers more freedom compared with overmolding, to optimize the strength of the plastic component, which is especially important for high-stress applications.
That means hybrid parts can be made smaller and lighter. Another advantage is the parts are less prone to warping.
Collar joining is suitable for both reinforced and unfilled plastics.
``Even if you take into account the investment cost for a press or assembly robot, collar joining - for larger-volume production - is cheaper than current assembly methods,'' said Ulrich Endemann, head of application research for hybrid parts, and one of the inventors.
Tel. +49 (621) 604-3348, fax +49 (621) 602-0129.
Advanced Extruder customizes feeders
Advanced Extruder Technologies of Elk Grove Village, Ill., said its new line of heavy-duty screw feeders are custom-designed for the specific material and bulk density.
The large machines, also called crammers, most often are used in scrap reclamation and compounding. The feeders can be adapted to all extruders by modifying or replacing the existing feed section.
Diameters of the feed screw/ augers range from 11/2-10 inches. An automatic torque feed back control corrects for changes in bulk density and material feeding efficiency, sending a steady flow of material to the extruder.
Tel. (847) 238-9651, fax (847) 238-9654, e-mail [email protected] er.com.
Maag Pump offers midrange gear pump
Maag Pump Systems Textron Inc. of Charlotte, N.C., announced that polyolefin manufacturers have a new choice: the viscorex-brand 20-inch gear pump, which manages throughputs up to 70,000 pounds an hour.
The new pump was based on needs for greater capacity than the 14-inch gear pump, but is smaller than the larger viscorex 44-inch gear pump.
Tel. (704) 716-9000, fax (704) 716-9001.
Axxicon unit, Toyo make disc machine
Japanese injection press maker Toyo Machinery & Metal Co. Ltd. worked with a subsidiary of Axxicon Mould Technology BV to launch a disc machine to make optical discs, especially digital versatile discs, in cycle times under three seconds.
The Axxicon subsidiary, Future Technology Engineering, contributed expertise on DVD molds and processing.
The companies claim the new optical disc production unit is the world's first fully integrated, all-electric molding press and mold that is suitable for all formats.
Axxicon and Toyo said in early April that the machine is undergoing testing at selected customers.
Osaka, Japan-based Toyo, part of the Hitachi Group, employs 400 people.
Axxicon Mould Technology is based in Helmond, the Netherlands.
Contact Axxicon at tel. +31 (49) 259-8702.
Milacron touts Si-B in 4 clamping sizes
Milacron Inc. said the superfast Roboshot Si-B all-electric press has artificial intelligence.
The press comes in four clamping-force sizes, from 55-330 tons. During injection, the Si-B can accelerate from a standstill up to 300 millimeters a second in just 27 milliseconds. The high speed makes the machine well-suited for molding thin-wall and precision parts such as electrical connectors and cell-phone parts.
The Cincinnati company said the acceleration is the fastest of any all-electric injection molding machine now sold.
Overlapping functions because of the all-electric power, and artificial intelligence for mold and ejector protection and metering/injection, also reduce cycle times.
Roboshot presses are made in Japan by Fanuc Ltd., Milacron's partner. Si-B machines use Fanuc's newest Alpha series of servo-electric motors and drives, which have reduced inertia and quicker response than earlier models. The control is 10 times faster than before, Milacron said.
The injection unit features a new design that is more rigid and robust. The press uses fiber-optic communications, making it immune to electronic ``noise'' in a plastics factory.
Milacron also has improved the mold protection capabilities of its Ohio-made, all-electric injection press, the Powerline, with new software called Mold Guard and Ejector Guard now featured on the Xtreem controller.
The software compares clamp and ejector forces, establishing force reference curves padded with an alarm band. Milacron said that allows a much higher level of sensitivity than the Powerline's standard mold protection system, and accounts for normal force variations if the measured force exceeds pre-set limits.
The software can be programmed to monitor the clamp's entire stroke, or just a portion of the stroke. The ejector's entire stroke is always monitored.
Both software programs automatically compensate for force increases because of changes over time because of friction or temperature. The actual force and maximum deviation amounts are shown on-screen to allow for troubleshooting of mold problems.
Mold Guard tracks the force needed to close the clamp, using the previous cycle as the reference curve. If the force exceeds the alarm-band limit, the clamp retracts.
Ejector Guard operates the same way. When excessive force is detected, the system immediately stops forward movement of the ejector bar.
The Xtreem is a personal computer-based controller that runs on Windows NT.
Tel. (888) 645-2276, fax (800) 282-8082.
Autojectors expands Evolution line sizes
Autojectors Inc. has introduced new sizes of its Evolution vertical insert molding machines - clamping forces of 130 and 280 tons.
Despite the larger sizes, the presses retain their small footprint, which Autojectors claims is less than half the size of comparable tie-bar vertical presses. The 280-ton, C-frame Evolution 280 measures just 15 feet by 7 feet.
The C frame also gives a more open design, so customers can use larger molds and get easier access to mold cooling and electrical connections. For worker safety, an infrared light curtain comes standard.
Autojectors is a unit of Cincinnati-based Milacron Inc.
Tel. (888) 645-2276, fax (800) 282-8082.
Tiny Nissei press now selling overseas
Nissei Plastic Industrial Co. Ltd. has export sales of its tiny all-electric injection press, the Elject AU3E, with 3 tons of clamping force.
Nissei said the press has the world's smallest mold-clamping force, for micro-molding. It makes parts weighing 0.2 gram or less.
The press uses a screw to pre-plasticize and meter the resin, and a plunger to send the melt into the mold. The design uses two tie bars. The Nagano, Japan, company provides a special screw to allow precision molding of crystalline resin, often used in micro-molding.
Nissei's U.S. headquarters, Nissei America Inc., is in Anaheim, Calif.
Tel. (714) 693-3000, fax (714) 693-7777, e-mail [email protected] nisseiamerica.com.
Temperature control reduces cycle times
Krauss-Maffei Kunststofftechnik GmbH has developed a new system to control mold temperature during production of digital versatile discs, with cycle times under three seconds.
The company will introduce the system at Mediatech 2003, slated for May 13-15 in Las Vegas.
Two temperature circuits are precision-regulated, so the temperature at the cavity surface is higher during injection than during the cooling phase. The second cooling unit is the new feature.
The Munich company said mold-cavity temperature is very important. If the temperature is too low, the DVD will not meet quality criteria. Too-high temperatures mean the DVD takes longer to cool, stretching out cycle times.
Tel. +49 (89) 8899-2592, fax +49 (89) 8899-3092.
made for short runs
Davis-Standard Corp. debuted two products at the CMM 2003 show in Chicago April 14-17.
The Flex-Master 13000 extrusion coating machine is designed for short runs of just one or two hours, making flexible packaging. Flex-Master's 65- and 75-millimeter coextrusion station uses a feedblock and a 1,500mm die with internal deckles, which provides edge bead savings. Both extruders are MAC models, with single air-cooling blowers.
The Pawcatuck, Conn., company also is touting the AutoPro, an automatic version of its WesJet air ring for blown film. The new design improves control, gauge tolerance and yield, without sacrificing throughput. High production rates are possible because AutoPro does not require heat, unlike similar profile technologies.
Separately, Davis-Standard announced that Packaging Personified Inc. of Carol Stream, Ill., purchased one of its blown film lines. The machine joins two existing Davis-Standard blown film lines that are less than 5 years old.
The new system is a turnkey installation using a 41/2-inch MAC extruder with a stationary, 14-inch die.
In other news, Davis-Standard has improved its machines to make single- and multilayer cosmetic sleeves. The company cited new high-speed peripheral cutting technology and developments in sleeve-diameter capacity and die-head performance.
The improvements have led to sales in Europe and Thailand, the company said.
Tel. (860) 599-1010, e-mail [email protected]
Mini-Jector machine has modest footprint
Mini-Jector Machinery Corp. of Newbury, Ohio, introduced its model 60, fully automatic injection press, with 10 tons of clamping force.
The hydraulic press uses the systems and controls from the company's vertical-clamp machine models 70 and 75, configured into a vertical-inject, horizontal-clamp machine,
The tiny machine occupies just 11 square feet of floor space. Customers can pick between one- and two-shot presses.
Tel. (440) 564-7210, fax (440) 564-5432, e-mail [email protected] neer.com.
Cinpres seeks patent for its PEP 4 process
Gas-assisted injection molding technology supplier Cinpres Gas Injection Ltd. has applied for patents on what it calls an improved variety of its plastic expulsion process, called PEP 4.
The goal is to link more precisely the plastic injection with the introduction of injected gas into the plastic melt, Cinpres said.
Under PEP 4, the initiation of the gas pressure cycle is started by a signal, when a predetermined pressure is reached during the injection of plastic from the molding press as it fills the mold cavity. The pressure may be detected with a sensor placed almost anywhere in the mold cavity or runners, or from the molding machine itself.
Also, the gas may be started by a signal from a position sensor, such as a linear displacement transducer that measures forward screw movement.
Cinpres said the advantage is that any variation in the speed of injection will change adversely the integration of the injection of plastic and the gas. PEP 4 can be installed easily, since Cinpres said its PPC and CPC gas controllers already allow for monitoring movement of the screw.
Another improvement to the PEP technique is the activation of the opening of PEP valves to allow the plastic to be expelled to fill overflow cavities, from a signal when the gas pressure reaches a selected pressure.
Cinpres is based in Middlewich, England. Its U.S. headquarters, Cinpres Gas Injection Inc., is in Ann Arbor, Mich.
Tel. (734) 663-7700, fax (734) 663-7615, e-mail [email protected] cinpres.com.
Coperion provides hydraulic conveyor
Coperion Waeschle GmbH & Co. said it installed the world's first large-scale Conticon system for hydraulic conveying of plastic pallets, in Shangai, China.
Shanghai Petrochemical Co. Ltd. uses the system to move polyethylene pellets one-half mile between the pelletizing unit and storage silos.
Instead of using air, Conticon uses water to move pellets smoothly over long distances. For the China project, Coperion custom-designed an impeller for the centrifugal pump, which generates the conveying flow.
In other news, Coperion has established Internet buying of spare parts at its Web site, www.coperion.com. Coperion is based in Weingarten, Germany.
Tel. +49 (751) 408-526, fax +49 (751) 408-557, e-mail christian.sor [email protected] coperion.com.
Laser system keeps extruders aligned
Fixturlaster AB of MÃ¶lndal, Sweden, has launched a laser system that keeps an extrusion line aligned properly, reducing problems that can require a company to buy extra spare parts and even stop production to do servicing.
The laser transmitter is mounted on the drive shaft, with the screw removed. It shoots a red laser beam through the barrel. The receiver rests on the inner surface of the barrel with six brass wheels, and it slides down the barrel.
The system is operated from a touch screen.
Tel. +46 (31) 706-2807, e-mail [email protected]
Moisture removal akes only one step
Cleveland-based Technical Machine Products has introduced a compounding mixer that also removes moisture from plastics, in one fast cycle.
The VMX mixer combines heat and a proprietary vacuum system. During the batch mixing cycle, the system removes moisture, trapped air and volatile gases.
VMX mixers are available in 5-liter laboratory models, and in production models of 35, 55, 75, 110 and 200 liters. The mixer chamber tilts for quick discharge and easy cleaning.
Tel. (216) 281-9500, fax (216) 281-0408, e-mail [email protected] mach.com.