PT Blog

But at last week’s MD&M West 2017 show in Anaheim, four suppliers teamed up to display a coextrusion line running a 1.4-mm diameter Teflon fluoropolymer (FEP) catheter tube throughout the exhibit. Check out the video below to see the line in action.

The main body of the catheter was an FEP delivered by the primary 3/4-in. Davis Standard extruder. A second 3/4-in. extruder pumped equally spaced embedded white FEP stripes filled with barium sulfate for x-ray opacity. The material streams were combined in a cross-head co-extrusion die supplied by Guill Tool & Engineering so that the barium-filled material forms four stripes that are embedded at 90° intervals around the circumference of the tube. Both the extruders and die package featured streamlined designs to minimize residence time, owing to FEP’s tendency to burn.

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A joint venture recently formed by Victrex (U.S. office in West Conshohoken, Penn.) and Tri-Mack Plastics Manufacturing Corp. of Bristol, R.I., aims to accelerate the commercial adoption of PAEK composites in aerospace applications.  This multi-million dollar investment, TxV Aero Composites, includes the establishment of a new U.S.-based, purpose-built polyketone composites center of excellence, due for completion in 2017, according to the partners.

This PAEK (polyaryetherketone) composite parts downstream manufacturing venture represents the second such move by Victrex, which in 2015 acquired polymer gears specialist Kleiss Gears, Grantsburg, Wisc., with particular expertise in molding PAEK.  

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Just a few days ago, I blogged about how higher crude oil prices and key feedstocks for several resins, coupled with planned and unplanned outages in some cases, have resulted in very early year price increases of several commodity resins, including PET.

How long prices of key PET feedstocks—PTA, MEG, and paraxylene, will continue to be volatile and impact PET prices is difficult to tell at this moment. How much higher PET prices are likely to get is also not clear, although a global oversupply situation which has been in existence is more than likely to continue for some time.

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13. February 2017

There’s More at Molding 2017

Over its 27 years, the Molding Conference and Exhibit has provided a schedule packed with thought-provoking presentations and an exhibit area filled with solution purveying suppliers. This April, the event goes even further in its bid to make better molders, expanding beyond the presentation ballrooms to two special off-site events.

Bookending the conference in 2017 will be a pair of unique additions. Immediately prior to the conference’s start, injection molding trainer, consultant and Plastics Technology columnist John Bozzelli will present a seminar and hands-on workshop at the Polymers Center for Excellence in Charlotte. The Molding At the Press course will tackle the five key processing requirements for successful 24/7 production.

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During MD&M West, Bluestar Silicones showcased its expanded Silbione Biomedical product line for long-term implant applications and its new primerless skin adhesive. The company has extended its > 30 day in the body range to include low consistency elastomers available in 25 to 40 Shore A hardness.

Dolomite featured live demonstrations of its unique Fluidic Factory, the first commercially available 3D printer for sealed microfluidic devices which utilizes cyclic olefin copolymer (COC) from TOPAS Advanced Polymers. The Fluidic Factory ran continuously at TOPAS’ Booth #662, producing a variety of microfluidic demonstration parts.

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