Caption: With excellent environmental stress crack resistance (ESCR), ECCOH™ 5978 UV formulations are ideal for use in aerial drop cables, which are often under continuous stress from the clamps that hold them in place. This makes them valuable in aerial drop cables, which are often under continuous stress from the clamps that hold them in place.

This can help tighten up cycle times and improve the mechanical and aesthetic properties of the finished product. Streamline production, reduce scrap and improve the physical properties of your finished part.

With non-hazardous Hydrocerol™ Chemical Foaming Agents (CFA) Avient helped the customer achieve their sustainability targets through significant energy savings in production and finished part weight reduction. Using Hydrocerol with core-back molding technology, a process in which the mold is opened slightly to further reduce pressure and allow the foam core to expand, Avient helped the customer leverage density reduction to lower finished part weight.

With non-hazardous Hydrocerol™ Chemical Foaming Agents (CFA) Avient helped the customer achieve their sustainability targets through significant energy savings in production and finished part weight reduction. Using Hydrocerol with core-back molding technology, a process in which the mold is opened slightly to further reduce pressure and allow the foam core to expand, Avient helped the customer leverage density reduction to lower finished part weight.

These solutions helped one of our customers satisfy high Vehicle Interior Air Quality (VIAQ) standards without compromising desired surface finish, gloss level, mechanical property or density. Maxxam™ helped the customer reduce the VOCs and fogging in their newly launched models by up to 80%, without compromising desired mechanical property or surface finish.

These solutions helped one of our customers satisfy high Vehicle Interior Air Quality (VIAQ) standards without compromising desired surface finish, gloss level, mechanical property or density. Maxxam™ helped the customer reduce the VOCs and fogging in their newly launched models by up to 80%, without compromising desired mechanical property or surface finish.

These solutions helped one of our customers satisfy high Vehicle Interior Air Quality (VIAQ) standards without compromising desired surface finish, gloss level, mechanical property or density. Maxxam™ helped the customer reduce the VOCs and fogging in their newly launched models by up to 80%, without compromising desired mechanical property or surface finish.

Barrel Temperatures °F (°C) PP Mineral-Filled PP Glass-Filled PP HDPE LDPE Rear Zone 360–390 (182–200) 400–420 (204–216) 400–420 (204–216) 370–390 (188–199) Center Zone 370–400 (188–204) 410–430 (210–221) 425–445 (218–229) 410–430 (210–221) 380–400 (193–204) Front Zone 390–410 (200–210) 420–440 (216–227) 435–455 (224–235) 420–440 (216–227) 390–410 (199–210) Nozzle 400–425 400–425 Melt Temperature 400–425 400 - 425 Mold Temperature °F (°C) 60–120 (16–49) Pack & Hold Pressure 50–75% of injection pressure Injection Velocity (in/s) 1.0–3.0 Back Pressure (psi) 50–100 Screw Speed (rpm) 30–100 Drying Parameters Hours @ °F (°C) Not typically required. Drying non-halogenated materials is suggested. 2 hours @ 100 (38) Moisture Range (%) Not required Vents should be placed at the intersection of each 90° bend in the runner system off of the cold slug well and vented to atmosphere Black Specks Contamination • Purge barrel with general purpose PP • Verify correct nozzle is being used • Pull screw for cleaning Degraded/overheated material • Decrease melt temperature • Decrease injection speed • Use appropriately sized barrel Brittleness Degraded/overheated material • Decrease melt temperature • Decrease injection speed • Use appropriately sized barrel Gate location and/or size • Relocate gate to nonstress area • Increase gate size to allow higher flow rate and lower molded-in stress Burning Process related Mold design • Clean, widen and increase number of vents • Increase gate size to reduce shear Fibers/Minerals on Surface or Uneven Surface Appearance Melt temperature too low • Increase injection speed Insufficient packing • Increase hold pressure and time Flash Injection pressure too high • Decrease injection pressure • Increase clamp pressure • Increase transfer position Excess material volume • Decrease pack pressure • Decrease shot size Melt and/or mold too hot • Decrease screw speed Loose clamp • Reset mold height • Increase clamp tonnage Troubleshooting Recommendations Incomplete Fill Melt and/or mold too cold • Increase nozzle and barrel temperatures Mold design • Enlarge or widen vents and increase number of vents • Check that vents are unplugged • Check that gates are unplugged • Enlarge gates and/or runners • Perform short shots to determine fill pattern and verify proper vent location • Increase wall thickness to move gas trap to parting line Shot size • Adjust transfer position to 98% full Nozzle Drool Nozzle temperature too hot • Decrease nozzle temperature • Increase screw decompression Shrink Too much shrink • Increase cooling time Too little shrink • Decrease cooling time Sink Marks Part geometry too thick • Reduce wall thickness • Reduce rib thickness Melt too hot • Decrease nozzle and barrel temperatures Insufficient material volume • Increase packing pressure Troubleshooting Recommendations (continued) Sticking in Mold Overfilled cavity • Decrease injection rate and pressure • Decrease hold pressure • Decrease cooling time Mold design • Increase draft angle • Polish cores in direction of ejection Part is too hot • Increase cooling time Warp Process related • Increase cooling time • Increase pack pressure • Increase pack time Mold design • Inspect for non-uniform mold cooling Part design • Inspect for non-uniform wall thickness Temperature control unit incorrect temperature • Check settings • Inspect thermocouple Weld Lines Melt front temperatures are too low • Increase pack and hold pressure Mold design • Increase gate size • Perform short shots to determine fill pattern and verify proper vent location • Add vents and/or false ejector pin • Move gate location 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation.

Jellison has served as Senior Advisor for Astor Place Holdings, the Private Equity arm of Select Equities, and consults with other private equity and investment management firms in the Medtech industry. Former Chairman, President and Chief Executive Officer of Innophos Holdings, Inc. Former Chairman and Chief Executive Officer of Ashland Global Holdings Inc., a global leader in providing specialty chemical solutions to customers in a wide range of customer and industrial markets.