Plastics News managing editor Don Loepp and reporter Steve Toloken gathered the following Marketplace items from K'98, held Oct. 22-29 in Dusseldorf, Germany.
D-S film line offers faster purging times
Davis-Standard Corp. introduced a new blown film line, which it had running at the company's ER-WE-PA facility in Erkrath, Germany.
The ProSack line features a ProPak three-layer coextrusion die in combination with a WesJet II cooling ring and Entrac double-iris enclosed chamber.
The line was producing shipping sacks using low, linear low and metallocene linear low density polyethylene. Highlights of the system include color changes in less than 15 minutes and fast purge times.
The die is the most critical component, according to the company, and the ProPak die is especially well-suited to heavy-wall shipping sacks. The design allows for an extremely short polymer flow path and an overall compact package.
Davis-Standard is based in Pawcatuck, Conn.
Tel. (860) 599-1010, fax (860) 599-0476, e-mail [email protected] snet.net
Berstorff introduces new image, extruder
Berstorff GmbH showed off a spiffy new image at K'98, plus a new twin-screw extruder for compounding heat-sensitive thermoplastics.
The company, a wholly owned subsidiary of Mannesmann Plastics Machinery AG of Munich, Germany, has dropped its elongated former name — Hermann Berstorff Maschinenbau GmbH.
Nelson Hopcus, president of the extruder maker's Florence, Ky.-based Berstorff Corp. unit, said the new name and logo are indicative of the marketing push Mannesmann has in store for Berstorff.
The Compex MPC extruder features patented, nonintermeshing elements and special back-flow elements that work in combination to mix the polymer thoroughly. The design also allows additives and temperature-sensitive materials to be incorporated gently and uniformly.
The machine can be fitted with a special sliding head for rapid screw changing.
Tel. (606) 283-0200, fax (606) 283-1860, e-mail [email protected] corp.com.
W&H features lines for cast, blown film
Windmoller & Holscher displayed a seven-layer blown film line for the first time at a trade fair. The Varex line, featuring a Multicone die, was making barrier film using six extruders.
The modular Multicone die features a stack arrangement of self-centering, spiral mandrel distributors, allowing operators to change layers easily. The conical melt distributors also allow for increased torsion strength, which in turn translates into excellent single-layer gauge distribution within the film.
The Multicone supports extremely short dwell times of melt in the die head, a requirement for long, continuous-production periods between cleaning cycles.
The line at the show also featured an Optifil P automatic film-gauge profile control and oscillating W&H haul-off unit with a patented Nostic package for films requiring superb appearance. The assembly consists of specially shaped air-turning bars designed to feed film without touching the bars, avoiding scratches.
Finally, the line featured a K-Beta, noncontact, traversing thickness gauge, a more accurate measuring device suited for sticky plastomer films.
The company also featured a three-layer cast film line running polypropylene.
The line includes a newly designed chill roll unit that allows the casting roll and secondary chill roll to be specified individually, to maximize output and optimize film properties.
Windmoeller & Hoelscher Corp. of Lincoln, R.I., is the U.S. unit of the Lengerich, Germany-based company.
Tel. (401) 333-2770, fax (401) 333-6491, e-mail [email protected]
Welex sheet system comes ready to use
Welex Inc. introduced high-capacity, World Standard-brand sheet extrusion systems. The systems incorporate 5- and 6-inch Mark III extruders; take-offs with integral winders, plus all the components required to produce finished rolls of trimmed sheet in widths suitable for all thermoforming machines.
The new systems are in addition to the company's 31/2- and 41/2-inch lines.
Welex first introduced World Standard machines in smaller sizes for smaller markets, like Caribbean countries. The basic concept was to sell a complete system, shipped in a container, ready to make sheet.
The new systems, capable of processing 3,200 pounds per hour, also are designed to be easy to use, but with higher capacity.
An optional V-PET package includes motorized digital height adjustment of polishing rolls and a bath of silicone coating the PET sheet to prevent blocking. All systems are pre-engineered, pre-wired, tested and shipped as two complete assemblies for field installation in one or two days.
In addition, Welex introduced a patented new internal accumulator system. The system is able to slow down the winder and accumulate 10-15 seconds of sheet during roll changes.
The internal accumulator is a low-cost alternative to add-on accumulators, which can cost $60,000.
Welex is based in Blue Bell, Pa.
Tel. (215) 542-8000, fax (215) 542-9841, e-mail [email protected]
Reifenhauser targets line for tight spaces
Reifenhauser GmbH & Co. Maschinenfabrik featured a cast film line with a new-generation Compact chill roll. The line, which produces five-layer polypropylene film, is designed for areas where space is limited.
The company also displayed a versatile, three-layer blown film system capable of producing 1,155 feet of film per minute — considered very fast for a multipurpose film line.
The Troisdorf, Germany-based company also presented its new turner bar system, REIcofly. The bars never come in contact with the film, making it suitable for sticky and dull film, metallocene films, and film with high optical demands.
The company's U.S. branch, Reifenhauser Inc., is based in Lawrence, Mass.
Tel. (508) 686-2700, fax (508) 686-4765.
Compounder allows variable conditions
APV Baker Industrial Extruder Division of Newcastle-under-Lyme, England, introduced its Advanced Compounder, built using APV's original clam-shell extruder design.
The twin-screw compounder offers a high-torque drive with high-screw-speed options, allowing operators to select optimum running conditions for a variety of materials.
The clam-shell design makes for easy cleaning of screws and allows operators to monitor wear without massive movement of equipment or the cost of internal blind measuring instruments, the company said.
Tel. +44 (1782) 565-656, fax +44 (1782) 565-800, e-mail extruder @apvbaker.com.
Fast Heat nozzle tips are interchangeable
Fast Heat Inc.'s new Micropoint nozzles are designed to provide hot-runner temperature control for small parts requiring close pitch.
The system's flat gate is designed to minimize turbulence in the resin flow and improve wear resistance.
Micropoint has nine interchangeable tips and features interchangeable heaters. Its flat tip design helps to reduce tip wear at the gate, according to the company.
Fast Heat is in Elmhurst, Ill.
Tel. (630) 833-5400, fax (630) 833-5414.