Polyshot valve gate retrofits to molds
Polyshot Inc. has introduced a single-nozzle valve gate for single-cavity molds where zero vestige and cosmetic part surfaces are important.
The MS75SNVG valve gate can be retrofitted onto molds. Because the piston assembly is inside the nozzle, no thickness changes are needed for the top clamp plate of the mold.
The nozzle features a cylindrical valve-pin shut-off design, which leaves a minimal gate vestige on the surface, resembling a mark from an ejector pin.
The nozzle is pneumatically operated, with air fed into the nozzle piston via lines running through the top clamp plate into the nozzle. Two heat zones provide uniform temperature.
Polyshot is based in West Henrietta, N.Y.
Tel. (585) 292-5010, fax (585) 292-5015, e-mail [email protected]
Negri Bossi, Mathson developing presses
Italian plastics machinery maker Negri Bossi SpA is teaming up with Mathson Industries Inc. to develop injection presses for molding metal, ceramics and plastics.
In September, Negri Bossi will ship a V270-1450 injection press with 300 tons of clamping force from its factory in Milan, Italy, to Mathson's facility in Troy, Mich.
``Mathson will work closely with Negri Bossi to promote the integration of these various materials into advanced injection molding machines which can process all these materials in one machine,'' said Boney Mathew, president and chief executive officer of Mathson. That eliminates the need for multiple machines dedicated to specific materials, he said.
The multimaterial molding market is growing for automotive and biomedical products, said Liam Burns, general manager of Negri Bossi USA Inc. in Newark, Del.
Tel. (302) 737-8001, e-mail [email protected]
Fast Heat's bushings have compact design
Fast Heat Inc. of Elmhurst, Ill., said its two new multitip bushings for hot-runner molding of small parts feature compact design, better performance and ease of use.
The bushings, called the MT32D and MT45D, are under the company's Precision series. They provide gating of as many as four cavities, even when closely pitched.
Tips, heaters and thermocouples can be replaced by simply unscrewing them, without replacing the entire bushing. Also, the heater in each bushing gives a more-uniform distribution of heat to the tips, according to Fast Heat.
Tel. (630) 833-5400, fax (630) 833-2040, e-mail [email protected]
Vorne designs system to monitor production
Vorne Industries Inc. of Itasca, Ill., has developed a ``bolt-on'' production-monitoring system.
Vorne said the XL800 monitoring system requires no change to existing processes, as it provides more than 100 real-time performance indicators to shop-floor workers and management.
The XL800 combines a visual display, a production monitor, expandable input/output capability, a multiple channel communication hub, a program executor and a data warehouse.
The unit tracks count rate, cycle time, production time, overall equipment effectiveness, target, goal and process time.
Tel. (630) 875-3600, ext. 106, fax (630) 875-3609, e-mail [email protected]
Lloyd testing device aims to boost safety
Lloyd Instruments Ltd. of Hants, England, said its new testing instrument improves the safety of performing heat-distortion temperature measurements and Vicat tests, a measurement of the temperature at which plastic starts to soften rapidly.
The device is called the Davenport HDT/VicatPlus. Tests are carried out in a closed, temperature-controlled oil bath. The weight-loading mechanism and test fixture mountings are a single unit, which is raised and lowered in the oil bath by an electric motor.
The assembly moves smoothly up and down on a lead screw to make sure the mechanism remains in an exact horizontal position.
Cooling also is done automatically, using water circulating through cooling pipes.
Tel. +44 (1489) 486-399, fax +44 (1489) 885-118, e-mail [email protected]
THK America unveils its GLM30 actuator
THK America Inc. of Schaumburg, Ill., introduced the GLM30 linear motor-positioning actuator, suited for automated assembly operations and robots requiring continuous high acceleration and high speeds.
THK's patented LM Guide Type SHS features long strokes and large thrusts. Incorporating the patented Caged Technology, the actuator generates less dust and low noise, while running at high speeds.
Tel. (847) 310-1111, fax (847) 310-1182, e-mail [email protected]
Technology deals with label distortion
Pasadena, Calif.-based Innovation Update is touting its new, patented ``Pearce Vented Technology'' to let makers of chemicals and cosmetics release pressure from internal gases in their plastic containers, solving problems with label distortion.
Woodrow Pearce, chief executive officer and president of Pearce Plastics Inc. of Pasadena, invented the technology. He is aiming the vented technology at firms that have paneling or pressurization problems.
Tel. (818) 797-8481, e-mail [email protected]
Mitsui's cyclo olefin enters the Americas
Mitsui Chemicals America Inc. is marketing its Apel cyclo olefin copolymer in North and South America.
Mitsui said the resin is well-suited for high-performance clear film, optical lenses, specialty packaging and blister packs. The Purchase, N.Y., firm claims Apel has low birefringence and the highest refractive index among commercial cyclo olefin polymers.
Apel combines desirable properties of polyolefins and those for amorphous polymers. Containing cyclic norbornene in the polymer chain, Apel has a bulky molecular structure and a high density. Barrier properties and good processability are highlights in the material's performance.
Tel. (914) 253-0777, fax (914) 253-0790, e-mail [email protected]
Plastics finds way in steel manufacturing
Australian researchers are seeking overseas interest in new technology that uses plastic waste as a raw material in steel manufacturing.
Veena Sahajwalla, a researcher at the University of New South Wales in Sydney, discovered that many types of waste plastic can be used in steel manufacturing.
``Plastic is just another form of carbon. When it comes to making iron and steel, there's essentially no difference between polyethylene and natural resources, such as coal,'' she said.
Sahajwalla said research focused on developing the technology so no changes had to be made to traditional steel manufacturing processes.
She said there are environmental benefits, because waste plastics do not go to a landfill and the use of natural carbon is reduced. Plastic has other advantages over traditional carbon sources.
``It doesn't necessarily have the same impurities. Polyethylene, for example, is composed of about 85 percent carbon and 15 percent hydrogen. It's a nice, clean source of carbon,'' she said.
Sahajwalla said she aimed to include as many other resins as possible. ``Using plastics at high temperatures is still new science. Finding out the reactions is part of the discovery, but, unless a plastic brings in an element that is not acceptable, we will include it.''
Sahajwalla said she has begun discussions with steel manufacturers, but would not disclose details, saying it was too early.
Tel. +61 (2) 9385-4426, fax +61 (2) 9385-5956, e-mail [email protected]
* WJT Associates of Louisville, Colo., said its Quick-Sight Estimator lets molders, mold builders, designers and engineers generate estimates for mold and part costs.