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Outdoor environments are unforgiving. Sun exposure, moisture, freeze–thaw cycles and sustained loads quickly push standard plastics past their limits.ÌýThat’sÌýwhy polyethylene (PE) composites reinforced with fiberglass are becoming the go‑toÌýchoiceÌýfor long‑life, high‑durability applications.Ìý

StarStran® 642Ìýis our newest chopped glass fiber engineered specifically for PEÌý-Ìýdesigned to help you create tough, weatherable parts with reliable mechanical performance.Ìý

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What MakesÌýStarStran® 642 DifferentÌý

PE‑optimized sizingÌý

StarStran® 642 uses a sizing chemistry tailored for strong interfacial bonding with PE, enabling the polymer and glass to work together to carry load effectively. In application‑level evaluations with development partners, the PE composites made withÌýStarStran® 642 meet/exceed performance targets in demanding railway sleeper/tie applications.Ìý

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Purpose‑built for outdoor durabilityÌý

PE composites already excel in weatherability.ÌýStarStran® 642 is designed to extend that advantage into structural and semi‑structural applications exposed to the elements.Ìý

Process‑friendly chopped strandsÌý

Available in common chopped lengths,ÌýStarStran® 642 processes smoothly into standard compounding,ÌýextrusionÌýand molding processes.Ìý

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Where It Fits (Globally)Ìý

IfÌýyou’reÌýreplacing wood or unreinforced polymers in long‑life outdoor applications,ÌýStarStran® 642 is a strong candidate for evaluation:Ìý

• Railway sleepers/ties & turnout componentsÌýrequiring long service life, dimensionalÌýstabilityÌýand consistent load‑bearing strength.Ìý
• Outdoor decking & boardwalksÌýwhere creep resistance, impactÌýperformanceÌýand weathering durability matter year after year.Ìý
• Construction surfaces & wood‑replacement boardsÌýincluding landscaping planks,ÌýfencingÌýand structural profiles.Ìý
• Furniture skins & outer layersÌýthat mustÌýretainÌýstiffness and surface quality despite environmental exposure.Ìý

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What You Can Expect from JMÌý

Performance backed by dataÌý

We back claims with application‑level testing, dataÌýpackagesÌýand practical processing guidance to streamlineÌýqualification.Ìý

Hands-on technical supportÌý

From formulation recommendations toÌýon‑lineÌýtroubleshooting, our team provides responsive, multilingual support throughout trials and scale‑up.Ìý

Reliable supplyÌý

StarStran® 642 is produced in North America. We can discuss regional supply options based on demand to reduce lead times and simplifyÌýlogistics.Ìý

PackagingÌý

Standard packaging options includeÌýstandardÌýsuper sacks / 1‑ton big bags.ÌýÌý

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Quick FAQ for DevelopersÌý

IsÌýStarStran® 642 compatible with recycled PE?Ìý

Yes. It has been evaluated in recycled PE systems for outdoor structural profiles such as sleepers/ties. We can provide guidance on resin blends, choppedÌýlength,Ìýand LOI ranges for your line.Ìý

What chopped lengths are available?Ìý

4 mm (~0.16 in) is widely tested. Longer lengths up to 6.4 mm (¼ in) have also been evaluated to balance flow, fiberÌýopeningÌýand mechanical performance.ÌýWe’llÌýrecommend a starting point based on your part geometry and screw design.Ìý

What about fiber diameter and process robustness?Ìý

StarStran® 642 uses 13 µm fibers and is engineered to minimize handling issues while promoting dispersion and bundle opening in standard compounding setups.Ìý

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Let’sÌýHelp Build Your Trial PlanÌý

Share your resin system, targetÌýproperties,Ìýand line configuration.ÌýWe’llÌýrecommend a chopped length/LOI starting point, supply trial material and provide application notes from recent developmentsÌý-Ìýso you canÌýget toÌýdata quickly.ÌýInterested? Contact our team to schedule your first evaluation.Ìý

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Meet usÌýatÌýJEC 2026Ìý

IfÌýyou’reÌýattending JEC World 2026,Ìýlet’sÌýconnect in Paris.ÌýWe’dÌýlove to discuss your PE composite projects and explore trials withÌýStarStran® 642. Visit usÌýinÌýHall 5, Booth 5N80 - or contact us in advance to book a dedicated meeting.Ìý