Sacmi Imola offering cap-making machine
Sacmi Imola scrl introduced its CCM005 high-speed compression molding machine for making bottle caps at the Drinktec 2005 show, held Sept. 12-17 in Munich, Germany. The machine can turn out 1,200 caps per minute, with a maximum diameter of 33 millimeters.
The press features 48 molds, placing it in between the 64-tool CCM002 and 32-tool CCM003. Sacmi said the 2.4-second cycle time is a new record. At Drinktec, the company showed a press making 30mm caps linked to the new, 12-head TVC 101 slitting machine, which can split 1,600 caps per minute. The firm also showed a 72-cavity mold for PET preforms to make half-liter water bottles.
The Imola, Italy-based company also will show the PVS-1, a rotary inspection machine that can check 42,000 bottles per hour, using seven video cameras.
Tel. +39 (542) 607-607, fax +39 (542) 646-607.
Custom barrier screw aids melt consistency
ServTek, Milacron Inc.'s service and parts organization, helped custom injection molder Beach Mold & Tool Inc. solve problems with melt consistency on a part by replacing a general-purpose screw with a custom MeltStar barrier screw.
The part was a large cooling fan for over-the-road trucks, molded on a Cincinnati Milacron two-platen Maxima with 1,000 tons of clamping force.
Officials of Beach Mold, based in New Albany, Ind., were frustrated with consistency problems molding the 35 percent glass-filled nylon part with 160-ounce shot weight. The company tried various adjustments, but results ran from burn streaks on the fan blades to blotches of unmelted material in the thickest sections of the part.
The filled nylon parts were insert molded with a metal mounting disc in the center, so scrap parts could not be recycled.
ServTek machined and installed the screw within a few weeks. The scrap rate went down to less than 1 percent, according to Beach Mold. Cycle time was reduced by 45 percent, thanks to a reduction in shot recovery time and work by the company on the mold's water cooling, according to Brian Rumbley, a Beach process engineer.
The barrier design of the MeltStar screw keeps the solids and melted materials separate, putting the solids more fully in contact with the barrel for more effective melting.
Tel. (513) 536-2352, fax (513) 536-2624, e-mail [email protected] milacron.com.
Diamond rebuilding sheet extrusion dies
Tallmadge, Ohio, extruder maker Diamond America Corp. has introduced a sheet coextrusion system and launched a service to rebuild extrusion dies.
Diamond America makes all the components.
The sheet line includes two custom-designed extruders. One has a screw diameter of 2 inches and a length-to-diameter ratio of 30-to-1. The second has a 1½-inch screw diameter and a 24-1 ratio.
The company designed a flex-lip sheet die that can adjust 0.125 inch. The lip adjustment is manual, and the die has a restrictor bar.
The coextrusion block has an A-B configuration.
Diamond America said its sister company, Akron Tool & Die Inc., are working together on the die-rebuilding service. Akron Tool has rebuilt dies and done machining since the early 1960s. Diamond America can rebuild dies for sheet and film, coating and lamination, blown film, pipe and profile and strand dies. The company also designs and builds new Multiflow strand dies and blown film dies for PVC applications.
Tel. (330) 633-9959 or (888) 349-9385, fax (330) 633-9557, e-mail [email protected]
Guill dies produce two-polymer profiles
Series 224 extrusion crossheads and dies can produce thermoset profiles with two polymers, according to Guill Tool & Engineering Co. Inc. of West Warwick, R.I.
The dies are designed for parts measuring 4 feet by 8 feet and larger. Sales manager Bill Conley said the crossheads and dies can boost the quality of rubber, PVC or other common coextrusion materials.
Guill's patented flow passages allow all materials to flow without stagnating to form a single profile. The series also allows for thinner walls and closer tolerances, the company claims.
Tel. (401) 828-7600, fax (401) 823-5310, e-mail [email protected]
Extrusion line dries resin pellets inside
Battenfeld Extrusionstechnik of Bad Oeynhausen, Germany, has installed a second direct-extrusion line to make PET thermoforming sheet at packaging maker FÃ¦rch Plast GmbH of Holstebro, Denmark.
Both lines are equipped with Coperion Werner & Pfleiderer-brand twin-screw compounding extruders. The second line incorporates a ZSK 119 MegaCompounder Plus as the main extruder and a ZSK 70 Mega- Compounder as the coextruder.
One big advantage for direct extrusion of PET: the resin is dried inside the extruder from a three-step vacuum degassing system. Normally, PET requires a separate pre-drying step.
The new line runs sheet 76.8 inches wide.
Tel. +49 (5731) 242-0, fax +49 (5731) 27-124, e-mail [email protected]
Roll's elastic cords remove web wrinkles
Webex Inc. said its expander roll for web handling uses stretchable, elastic cords on the roll face to remove wrinkles on the web.
As the roll turns along with the traveling web, special cams stretch the surface cords that contact the web.
The stretching action gently pulls from the center of the web to the outer edges, removing unwanted wrinkles.
Webex of Neenah, Wis., said the roll can be used for laminating and embossing, winding, slitting, coating and many other web-handling processes. For low-tension applications, Webex offers the expander roll with a drive pulley.
Tel. (920) 729-6666, e-mail web [email protected]
RimCell dispensers aid patented process
Polyurethane machinery maker Gusmer/Decker reports it supplied dispensing equipment to smart-card maker CardXX Inc. for its patented technology known as RAMP, which stands for reaction- assisted molding process.
RAMP dispenses PU under low pressure and at low temperature to encapsulate a radio-frequency-identification chip, an integrated circuit and other electronic components, such as batteries, onto portable products such as smart cards, key fobs or memory cards.
The technique precisely positions computer chips and electronic parts within a mold, between sheets of polycarbonate or PVC film.
Then a tiny amount of PU is injected to cover the electronics. Curing is completed in less than an hour.
Gusmer/Decker of Lakewood, N.J., notes that RAMP is far different from reaction injection molding, which uses high pressure and temperature.
CardXX is using existing RIM techniques with Gusmer/Decker's RimCell metering and dispensing equipment to dispense the very small, gram-level quantities of PU needed for the new process.
RimCell can run flow rates as low as one-third of a pound per minute.
Gusmer is in Lakewood, N.J.
Tel. (800) 458-2133, e-mail [email protected]
Mixing head for PU can adjust on the fly
Krauss-Maffei Kunststofftechnik GmbH said new proportional mixing heads for polyurethane change the choke gap at the outlet - adjusting to changing shot volumes automatically, on the fly - to make PU foam cushions with different hardness zones. One application is automotive seat cushions.
Transfer mixing heads, processing as many as six components, are the best choice for making products with different hardness zones, said KM of Munich, Germany.
As it leaves the mixing chamber, the PU mix is choked to achieve a laminar flow and a consistent mixing profile, based on the volume and viscosity of the mix being processed. The head controls the position of the cleaning plunger to adjust the cross section of the mixing head, or the choke gap.
On the Krauss-Maffei unit, a servo valve controls the position of the cleaning plunger in less than a second.
The company's U.S. unit in Florence, Ky., is Krauss-Maffei Corp.'s Reaction Process Machinery Division.
Tel. (859) 372-8549, fax (859) 283-0311, e-mail [email protected]
Lloyd Instruments touts melt indexer
Lloyd Instruments Ltd. of Fareham, England, said its Davenport MFI-10 melt indexer automatically measures polymer melt flow.
MFI-10 features a dual test mode to check melt density. Options include an automatic flow-rate timer, weight loaders and cutoff.
Tel. +44 (1489) 486-399, fax +44 (1489) 885-118, e-mail suzanne [email protected]
Big honeycomb dryer improves throughput
Comet Automation Systems Inc. shipped what it claims are two of the world's largest honeycomb-rotor dryers to nonwoven PET processor BBA Fiberweb, based in Nashville, Tenn.
The customer replaced existing dryer systems, Comet said.
Comet said the continuous desiccant dryers, both HCD 3000s, can dry 3,000 pounds of PET an hour at a constant dewpoint as low as minus 85° F, without the kind of fluctuations in temperature and dewpoint typically associated with desiccant dryers.
According to Comet, the honeycomb dryer can bring PET within a final moisture content of less than 20 parts per million in three hours of drying time - vs. the 300 ppm after six hours the customer was getting with another desiccant-carousel dryer.
The honeycomb is a ceramic fiber impregnated with desiccant material, mounted inside a rotor that continuously turns inside the dryer. Comet President Tom Rajkovich said the machine increased the customer's throughput by 30 percent.
Comet is in Dayton, Ohio.
Tel. (800) 328-5088, e-mail [email protected]