Published: August 23rd, 2012
Air-cooled blown-film extrusion machines can allow energy loss through convection cooling when the dampers are closed, victims of the so-called 'chimney effect'. A new extruder design removes heat and air currents from the extrusion area, using dampers that are connected to a common air plenum integrated into the machine base, which is in turn connected to a single exhaust fan, either connected to the base or remote mounted.
Published: July 27th, 2012
As window profile extrusion moves towards greater use of recyclables and fillers, KraussMaffei Berstorff has responded with coextrusion models where a parallel twin-screw extruder can extrude profiles cores and outer layers with a mix of virgin and recycled resin plus fillers.
Published: February 17th, 2012
A new control system retrofit kit allows management of an entire extrusion line via modern HMI-Software and a 19-inch touch screen. The TEC 4s from High Tech Extrusion group, developed in cooperation with Siemens, can be installed new or retrofitted onto Theysohn Extruders.
Published: February 16th, 2012
Pipes and profiles can be extruded by a new range of single-screw extruders offered in four sizes, covering the medium-output range from 50 to 500 kg/hr, with the supplier boasting the lines offer consistently high specific throughput at every screw speed. The new uniEX single-screw extruders from battenfeld-cincinnati can run a broad range of thermoplastic materials from PVC and polyolefins to thermoplastic elastomers and engineering plastics.
Published: September 14th, 2011
A new patent-pending seal for piston-type screen changers and divert valves is designed for leak-free processing of low-viscosity materials, such as hot melt adhesives (HMA) and cleaning solvents such as, but not limited to, acetone, toluene, hexane, and heptane. The new PSI-Polymer Systems Inc.'s (Conover, NC) seal is capable of operating at temperatures up to 520°F.
Published: May 6th, 2011
The manufacturer of single-screw extrusion equipment and screen changers, among other equipment, claims it is the first extruder manufacturer to receive an unrestricted Non Objection Letter from the U.S. Food & Drug Administration (FDA) for its complete PET recycling system. The company already in 2010 received a Non Objection Letter from the FDA for a complete PET recycling system including a solid state polymerization (SSP) system.
Product Watch: New products and news from Rotoline, ADG Solutions, Wittmann Battenfeld and Slide Products
Published: April 29th, 2011
Look to PlasticsToday's Product Watch for updates on recent developments in the world of plastics processing machinery. New for rotational molders is the Carrossel independent-arm rotational molding machine from Rotoline Industrial Equipment Ltda. (Chapeco, Brazil), an affiliate of Reduction Engineering Inc. (Kent, OH). The company will introduce the machine at the Brasilplast exhibition this month (May 9-13) in São Paulo, Brazil.
Published: April 29th, 2011
If money were no object, then most of us would opt to buy new. But money matters, plenty, so sometimes we need to reuse and refurbish. That was the case for flexible plastic films processor/converter Amgraph, which had a 75-feet (23m) long Black-Clawson two-station extrusion laminator it wanted to upgrade to meet new customer requirements.
Published: April 28th, 2011
At the giant interpack packaging show this month, packaging machinery manufacturer Windmoeller & Hoelscher will display a milestone machine, the 750th form/fill/seal unit from the company. The show line, which has been sold to Dutch logistics company Katoen Natie (KTN), will be the newest version of the established Topas F/F/S units in that it can move under "silos" so that goods to be packed are discharged (filled) directly into containers before sealing.
Published: March 15th, 2011
A newly introduced extrusion line for thin-walled polyethylene tubes, such as the squeeze tubes used to package cosmetics, gives processors the flexibility to extrude a wide range of tube sizes, configurations (1-5 layers) and compounds, and even to quickly change from one tube specification to another.