Encoded particles identify plastic parts
Microtrace LLC has enhanced its plastic security and identification technology.
The Minneapolis firm's Microtaggant identification particles help prevent counterfeiting and support product liability claims. The particles contain encoded sequences that positively identify the source of a plastic part.
A Microtrace spokesman said the particles typically are based on cross-linked melamine resin so that they survive heat and shear encountered in compounding and plastics processing. Codes in the particles can be discerned visually, with lasers or with ultraviolet-light sources. Each particle can contain several codes for increasingly tighter security.
Microtaggant particles are available in compounded resin and in other forms such as adhesives, films and labels.
Tel. (763) 784-9725, fax (763) 784-3787, e-mail [email protected] tracesolutions.com.
PAC 60 winder suited for laminates, bags
The PAC 60, a new Surface winder from Davis-Standard Corp., enables film converters to wind 60-inch diameter rolls on 6-inch cores at speeds up to 600 feet per minute.
Davis-Standard of Pawcatuck, Conn., said the PAC is ideal for large roll mill operations where film is converted into a lamination or made into bags or sacks off-line.
Davis-Standard recently supplied nine of the winders to a major can liner manufacturer.
The PAC 60 features lay-on pressure control to prevent blocking at the core, a problem that happens on most large-roll surface winders that do not control the lay-on force, Davis-Standard said. The firm uses a hydraulic control circuit and roll-mounted force transducers that use an actual pressure feedback circuit to consistently maintain pressure.
Other features include a shaft accelerator to bring the new core to the higher line speeds, and transfer with an auto-cut traversing knife to a new core. A pneumatic latch during the transfer cycle for positive roll starts and transfers.
The winder comes in 40-, 50-, 60- and 70-inch widths.
Tel. (908) 722-6000,e-mail rkel [email protected]
LPKF technology lets lasers imprint circuits
LPKF Laser & Electronics AG has licensed laser-sensitive technology suited for molded interconnect electronic devices to BASF AG.
LPKF developed metal/organic chemistry that allows the imprinting of very fine details on the surface of plastic electronic circuits. The plastic circuit containing the metal/organic chemicals reacts where laser light shines on it, creating patterns less than 100 microns in width. The patterns turn into copper conducting lines when the laser-treated plastic circuit is then immersed in an electroless plating solution.
LPKF of Garbsen, Germany, claims the technology is environmentally friendly, eliminates several manufacturing steps and allows circuit changes without costly tooling changeovers. BASF of Ludwigshafen, Germany, decided to use its Ultramid T as the base resin for the process. The material is a crystalline, semi-aromatic nylon that can withstand high temperatures encountered in electronic circuit production.
LPKF said its process is particularly suited to mobile telephone antennas, automotive components and security technology. The firm's LPKF USA subsidiary is based in Wilsonville, Ore.
Tel. (503) 454-4233, fax (503) 682-7151, e-mail [email protected] usa.com.
SME's spreadsheet calculates part cost
The Society of Manufacturing Engineers is offering an Injection Molded Part Cost Estimator, a spreadsheet to evaluate variables SME says are not always considered in determining total part cost.
Dearborn, Mich.-based SME's Injection Molding Technical Group developed the tool.
The calculator includes part volume, resin, tooling equipment and maintenance, production, secondary operations and other costs and direct labor.
The spreadsheet is free to SME members. Nonmembers pay $24.
Tel. (800) 733-4763, e-mail ser [email protected]
BP Amoco PP targets stretch blow molding
BP Amoco Chemical Co. has debuted polypropylene resins aimed at injection stretch blow molding applications.
The Acclear HP I series features fast heat-up technology to provide blow molding rates equal to those of PET on standard PET reheat and blowing equipment, claims BP Amoco's PP business unit based in Naperville, Ill.
Compared to conventional PP grades, the new ones give better wall-thickness distribution; a favorable balance of clarity, taste and stiffness and impact strength; and better clarity than injection-stretch blown high density polyethylene in container production. The new resins are approved for use in food packaging.
Tel. (630) 420-4950, fax (630) 420-4972, e-mail [email protected]
Anti-stat designed for rotomolding PE
Teknor Color Co. has introduced an additive that fights static electricity for granite-effect colors in rotomolded polyethylene.
H2Stat-G is designed to prevent swirling and streaking of dry granite colors mixed in PE. Swirl is caused by static charges when PE resin powder flows across a moving mold. Because PE is an excellent insulator, the static charge does not dissipate readily.
Teknor of Pawtucket, R.I., said H2Stat-G provides anti-stat action without relying on moisture, like conventional products do, making it useful for rotomolders in dry climates. A powder, it is available separately or in a blend with granite-effect dry colors.
Tel. (401) 725-8000, fax (401) 724-8520, e-mail [email protected]