Krah AG improves pipe-making system
Krah AG of Schutzbach, Germany, has improved its technology for making large-diameter pipe.
By adding a gravimetric dosing system to mix four components, including chopped fibers, and a new control system, Krah has been able to reduce the weight of the pipe. Material changes no longer affect the pipe, the company said.
The gravimetric dosing system means a mass pump no longer is needed.
The new machine now can produce pipe in both directions, while the extrusion unit now is fixed and the production system, with the mandrel, moves along the extruder - saving time and space.
Krah's patented technology winds the extruded mandrel into large-diameter pipe. The company said a new profile design makes them lighter with stronger walls.
For inline socketing, Krah said it has modified the form of the socket to improve the quality.
Krah also has seen growth in the market for sea outflow pipes, selling its machine, called the KR750, to a Eurotrubplast project in Russia.
Krah North America Inc. is based in Greenwood, S.C.
Tel. 864-223-0592, fax 864-223-9406, e-mail [email protected]
Entex touts expanded extruder capabilities
Entex Rust & Mitschke GmbH of Bochum, Germany, said its Entex planetary roller extruders are moving beyond classic PVC compounding, and growing into more use in chemical reaction technology, compounding of elastomer adhesives and compounding of materials used by the composites industry.
The company is pushing compounding and pelletizing applications. Other applications include extrusion and film production, and converting recycled plastic into end-use products.
Entex planetary roller extruders can process ABS, thermoplastic olefins and elastomers, filled polyolefins and more. The planetary roller extruder boasts a central spindle surrounded by rolling planetary spindles.
Tel. +49 234-89122-0, fax +49 234-89122-99, e-mail [email protected]
Gneuss MRS machine advances degassing
Gneuss Kunststofftechnik GmbH of Bad Oeynhausen, Germany, has introduced its Multi Rotation System, or MRS, a machine for evacuating, or degassing, the polymer melt.
The single-screw machine has a patented multiple-screw section, so it makes a very large area available for degassing, even with a low level of vacuum, Gneuss said. That makes it possible to extrude undried PET bottle flakes or pellets. The MRS technology can provide 100 percent dehumidification of PET, while increasing the intrinsic viscosity of the material, the company said.
Gneuss also has a new generation of its SFXmagnus and RSFgenius rotary melt filters.
The SFXmagnus has a new method for heating, and an airtight, encapsulated design that prevents chemical reactions with the melt. By replacing the hydraulic drive with a pneumatic drive, the firm has reduced the price by up to 20 percent, it said.
On the RSFgenuis, Gneuss has increased the filtration area up to 20 percent, while reducing the energy needed to heat the unit.
The company also showed a redesigned range of mercury-free melt-pressure sensors.
The U.S. operation, Gneuss Inc. is in Matthews, N.C.
Tel. 704-841-7251, fax 704-841-7254, e-mail [email protected]
Maag presents line of maax controllers
Maag Pump Systems AG, based in Oberglatt, Switzerland, is touting its maax line of controllers that integrate gear pumps and screen changers in extrusion lines.
Maag Pump's maax 9 is suited for easy retrofitting to existing systems. It offers statistical functions and process data memory, so quality can be traced.
The maax 100S simplifies operation, control and regulation of operating parameters. The modular and customizable maax 62 is designed for turnkey extrusion and compounding plants. The low-cost maax 3 controller is aimed at small, low-throughput extruders.
Last year, Maag Pump Systems and Oerlikon Barmag of Remscheid, Germany, announced a cooperation agreement under which both companies can sell each other's products. Oerlikon Barmag makes metering pumps for the textile industry, and gear-metering pumps for industrial customers.
Maag's U.S. unit, Maag Pump Systems Textron Inc., is in Charlotte, N.C.
Tel. 704-716-9000, fax. 704-716-9001.