𝐓𝐨𝐝𝐚𝐲'𝐬 𝐊𝐍𝐎𝐖𝐋𝐄𝐃𝐆𝐄 𝐒𝐡𝐚𝐫𝐞 𝐂𝐨𝐧𝐯𝐞𝐧𝐭𝐢𝐨𝐧𝐚𝐥 𝐬𝐢𝐧𝐠𝐥𝐞-𝐬𝐜𝐫𝐞𝐰 𝐞𝐱𝐭𝐫𝐮𝐬𝐢𝐨𝐧 𝐡𝐚𝐬 𝐥𝐨𝐧𝐠 𝐛𝐞𝐞𝐧 𝐜𝐨𝐧𝐬𝐢𝐝𝐞𝐫𝐞𝐝 𝐚 𝐦𝐚𝐭𝐮𝐫𝐞 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐰𝐢𝐭𝐡 𝐥𝐢𝐭𝐭𝐥𝐞 𝐫𝐨𝐨𝐦 𝐟𝐨𝐫 𝐢𝐦𝐩𝐫𝐨𝐯𝐞𝐦𝐞𝐧𝐭

𝐓𝐨𝐝𝐚𝐲'𝐬 𝐊𝐍𝐎𝐖𝐋𝐄𝐃𝐆𝐄 𝐒𝐡𝐚𝐫𝐞

𝐂𝐨𝐧𝐯𝐞𝐧𝐭𝐢𝐨𝐧𝐚𝐥 𝐬𝐢𝐧𝐠𝐥𝐞-𝐬𝐜𝐫𝐞𝐰 𝐞𝐱𝐭𝐫𝐮𝐬𝐢𝐨𝐧 𝐡𝐚𝐬 𝐥𝐨𝐧𝐠 𝐛𝐞𝐞𝐧 𝐜𝐨𝐧𝐬𝐢𝐝𝐞𝐫𝐞𝐝 𝐚 𝐦𝐚𝐭𝐮𝐫𝐞 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐰𝐢𝐭𝐡 𝐥𝐢𝐭𝐭𝐥𝐞 𝐫𝐨𝐨𝐦 𝐟𝐨𝐫 𝐢𝐦𝐩𝐫𝐨𝐯𝐞𝐦𝐞𝐧𝐭. 𝐑𝐚𝐧𝐝𝐜𝐚𝐬𝐭𝐥𝐞 𝐄𝐱𝐭𝐫𝐮𝐬𝐢𝐨𝐧 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 𝐢𝐬 𝐜𝐡𝐚𝐥𝐥𝐞𝐧𝐠𝐢𝐧𝐠 𝐭𝐡𝐚𝐭 𝐚𝐬𝐬𝐮𝐦𝐩𝐭𝐢𝐨𝐧.



The company's patent-pending Molecular Homogenizer (MH) screw has been repositioned to the metering section, expanding its utility from starve-feed to flood-feed applications — including film, sheet, and other common extrusion formats.


The MH mixes using continuous elongation rather than shear and compression. According to Randcastle CEO Keith Luker, this "deterministic" approach ensures all material is elongated, generating more than 100 trillion mixing events per cycle.


Test data supports notable outcomes:


- 22.4% increase in elongation at yield and 17.9% boost in impact strength in PETG trials conducted by Pennsylvania College of Technology

- No measurable molecular weight loss in PLA, compared to a 5% reduction on a control screw

- Suppression of oxidative discoloration in LLDPE on second-pass processing

- No pre-drying required for PC and PEEK


Luker reports active discussions with several single-screw extruder OEMs evaluating the technology.


source : Plastics Technology

Comments

Post a Comment

Popular posts from this blog

Today's KNOWLEDGE Share : Robotic 3D printing can compete with traditional boatbuilding

Image
Today's KNOWLEDGE Share “Robotic 3D printing can compete with traditional boatbuilding”, Simone Barbera and Mattia De Santis, Caracol V2 catamaran was printed in Italy at Caracol’s production center and headquarter in Barlassina, near Milan, with a Heron AM 400, Caracol’s robotic Large Format Additive Manufacturing (LFAM) platform. The lattest was specifically configured with a 7-axis robotic arm mounted on a rail, enabling the printing of parts up to 10 meters in length. How did the collaboration between V2 Group and Caracol come about? Simone Barbera : The collaboration between V2 Group and Caracol originated from a shared vision to revolutionize boat manufacturing through sustainable innovation. V2 Group, a Spanish-company specialized in nautical design and engineering, is seeking to develop electric vessels manufactured sustainably. On the other hand, Caracol, leader in robotic advanced manufacturing technology, had had years of experience working with Large Format Additive Ma...
Read more

Today's KNOWLEDGE Share : What Is Going Wrong in UK Plastics Recycling?

Image
Today's KNOWLEDGE Share What Is Going Wrong in UK Plastics Recycling? Biffa shut its Sunderland plant. Viridor walked away from Avonmouth and Rochester. Yes Recycling Fife collapsed within a year. All three were backed by major investments All three had buyers lined up for recyclate All three are now offline This is not bad luck It is bad structure Over the next four posts I will break down: 1. Why cheap virgin imports are undercutting UK recyclers 2. How weak policy enforcement is fuelling market failure 3. What volatile PRNs and cheap exports are doing to infrastructure 4. Why demand from brands is softer than their promises Let’s start with the first: **Cheap Virgin Resin = Broken Economics** Virgin PE, PP, and PET have been flooding the global market. New capacity in Asia and the US has driven prices down 30 to 40 percent. Meanwhile, recycled plastic costs more to produce in the UK than it can sell for. We are asking UK recyclers to compete with materials made in places with – ...
Read more

Today's KNOWLEDGE Share : A BUG IN INJECTION MOLDING

Image
Today's KNOWLEDGE Share A bug in injection molding – an injection-molded part in a bug? Neither! Nature and injection molding have reached similar results. Nature created the first micro-gear long before any human engineering existed. One such example is the Issus coleoptratus (shown in the picture). Furthermore, only now are we reaching the point where injection-molded polymer microgears can approach this level of performance. Looking at the images, which one do you think is the natural gear, and which one is the molded version? It is not that easy to tell, right? Their appearance and operating principles are surprisingly similar. Chitin, a natural linear polymer, forms what nature essentially "molds” into shape. In engineering, we rely on advanced technical polymers to produce similar geometry through actual injection molding. They are not the same material, yet they solve the same issue: Stiffness, dimensional stability, and reliable function at a scale where tolerances...
Read more