https://www.avient.com/sites/default/files/2024-03/Nymax _ Nymax REC Processing Guide.pdf
NYMAX™ POLYMER
FORMULATIONS
PRIME & RECYCLED
NYLON THERMOPLASTICS
PROCESSING GUIDE
2 Nymax Polymer Formulations
Nymax™ and Nymax™ REC Formulations
Nymax™ thermoplastics include prime and recycled nylon formulations in both unfilled grades and
with various levels of glass fiber and mineral reinforcements.
Place vents at the end of fill and anywhere potential knit/weld lines
will occur.
2.
Additional draft may be required for grained/textured surfaces.
4 Nymax Polymer Formulations
Troubleshooting Recommendations
Problem Cause Solution
Incomplete Fill
Melt and/or mold
too cold
• Increase nozzle and barrel temperatures
• Increase mold temperature
• Increase injection rate
• Check thermocouples and heater bands
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
• Increase shot size
• Adjust transfer position to 98% full
• Increase cushion
Brittleness
Wet material
• Check moisture.
https://www.avient.com/sites/default/files/2022-07/Additives and Colorants for PP-R PP-RCT Pipes - Application Snapshot.pdf
P I P E & F I T T I N G S
M A N U FAC T U R E R
W A T E R / F L U I D D I S T R I B U T I O N
• Suitable for PP-R and PP-RCT
• Specific color targets for external and inner layers
• Improved resistance to chlorine for the inner layer
• Food contact approval for the inner layer
• Batch-to-batch consistency
• Matched color references in concentrates
suitable for PP-R and PP-RCT
• Developed custom colorant/antioxidant
combination masterbatch with high
resistance to chlorine and food contact
approval for the inner layer
• Ensured batch-to-batch consistency for
sustained performance
Color concentrates and color/antioxidant
combination masterbatch
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/news/enhanced-virtual-simulation-capabilities-avient-support-use-polymer-materials-structural-applications
This predictive simulation technology factors in conventional (isotropic) and advanced (anisotropic) modeling data from material characterizations, mold filling analysis, and finite element analysis (FEA).
Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint
https://www.avient.com/sites/default/files/2023-05/LFT Application Development Center Bulletin.pdf
glass, carbon, etc
These tools include mold-filling
simulations to study fill patterns (including predicted
pack and cooling) of the geometry and predict knit
line locations at resin flow fronts to help ensure you
are directing the best fiber alignment (strength) in
the highest stress areas that your product endures
when in use.
https://www.avient.com/sites/default/files/2020-12/artisan-thermoplastics-nylon-processing-guide.pdf
Processing Guide 3
Start Up & Shut Down Recommendations
Purge Compound
2–3 melt flow PP or purging compound.
Place vents at the end of fill and anywhere potential knit/weld lines will occur
2.
Cut vent depths to 0.0007″–0.0015″
Draft Angle Maintain a minimum draft angle of 1° per side
4 Artisan Pre-Colored Thermoplastics
Troubleshooting Recommendations
Problem Cause Solution
Incomplete Fill
Melt and/or mold
too cold
• Increase nozzle and barrel temperatures
• Increase mold temperature
• Increase injection rate
• Check thermocouples and heater bands
Shot size
• Increase shot size
• Adjust transfer position to 98% full
• Increase cushion
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
Brittleness
Degraded/overheated
material
• Decrease melt temperature
• Decrease back pressure
• Use smaller barrel
• Decrease injection speed
Gate location
and/or size
• Relocate gate to non-stress area
• Increase gate size to allow higher flow rate
and lower molded-in stress
Wet material
• Check moisture.
https://www.avient.com/sites/default/files/2021-11/artisan-ar7300-pre-colored-formulation-processing-guide.pdf
BASE RESIN ABS
Drying Temperature 80–90°C
Drying Time 2–3 Hours
Barrel Temperatures °C
Rear Zone 180–210
Center Zone 190–220
Front Zone 200–230
Nozzle 210–240
Mold Temperature 50–80
Screw Speed Moderate
Back Pressure 3–10 bar
Cushion 5–15 mm
Injection Speed Low to medium
Injection Pressure Moderate to high
Holding Pressure 10–30% of injection pressure
Screw Type General purpose
Screw L/D 20:1
Screw Compression Ratio 2.0:1–2.5:1
Non-return Check Valve Free flow check ring
Nozzle Type Reverse taper
Barrel Capacity 30–80% of barrel should be used
STARTUP & SHUTDOWN RECOMMENDATIONS
Purge Compound
2–3 melt flow PP or purging compound.
Venting
• Place vents at the end of fill and anywhere potential knit/weld lines will occur.
• All vents need to be vented to atmosphere.
• For circular parts, full perimeter venting is recommended.
• Cut vent depths to 0.0007″–0.0015″.
PROBLEM CAUSE SOLUTION
Incomplete Fill
Melt and/or mold
temperature too cold
• Increase nozzle and barrel temperatures
• Increase mold temperature
• Increase injection rate
• Check thermocouples and heater bands
Shot size
• Increase shot size
• Adjust transfer position to 98% full
• Increase cushion
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
Brittleness
Degraded/overheated
material
• Decrease melt temperature
• Decrease back pressure
• Use smaller barrel
• Decrease injection speed
Gate location
and/or size
• Relocate gate to non-stress area
• Increase gate size to allow higher flow rate and lower
molded-in stress
Wet material
• Check moisture.
https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf
Injection Molding Parameters
Base Resin PPA PPS PA 6/6 PA 12
Barrel Temperatures °F (°C)*
Rear Zone 550–580(288–305)
550–580
(288–305)
440–490
(227–254)
440–480
(227–250)
Center Zone 560–600 (293–316)
560–615
(293–324)
470–510
(243–266)
460–510
(238–266)
Front Zone 580–620 (304–327)
590–630
(310–333)
490–540
(254–282)
480–520
(250–271)
Nozzle 575–615 (302 –324)
600–625
(316–330)
520–570
(271–300)
500–530
(260–277)
Melt Temperature °F (°C) 575–615(302–324)
600–625
(316–330)
520–570
(271–300)
500–530
(260–277)
Mold Temperature °F (°C) 250–300 (121–150)
250–300
(121–150)
150–200
(66–93)
150–200
(66–93)
Pack and Hold Pressure 50–80% of Injection Pressure
Injection Velocity 1.0–3.0 in/sec
Back Pressure 25–100 psi
Screw Speed 25–75 rpm
Drying Parameters °F (°C) 6 hours @ 175 (80) 6 hours @ 300 (150) 3 hours @ 180 (82) 3 hours @ 180 (82)
Cushion 0.125–0.250 in
Screw Compression Ratio 2.5:1–3.5:1 2.0:1–2.5:1 2.5:1–3.5:1 2.5:1–3.5:1
Nozzle Type General Purpose General Purpose Reverse Taper Reverse Taper
Clamp Pressure 4–5 tons/in2 of projected area of cavities and runner system
* Barrel temperatures should be elevated for compounds designed for electrical insulative properties.
Place vents at the end of fill and anywhere potential knit/weld lines
will occur.
2.
Maintain a minimum draft angle of 1° per side.
4 Therma-Tech
Troubleshooting Recommendations
Problem Cause Solution
Incomplete Fill
Melt and/or mold
too cold
• Increase nozzle and barrel temperatures
• Increase mold temperature
• Increase injection rate
• Increase pack and hold pressure
• Increase nozzle tip diameter
• Check thermocouples and heater bands
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
• Increase shot size
• Increase cushion
• Decrease transfer position
Brittleness
Low melt
temperature
• Increase melt temperature
• Increase injection rate
• Measure melt temperature with pyrometer
Degraded/
overheated
material
• Decrease melt temperature
• Decrease back pressure
• Use smaller barrel/excessive residence time
• Decrease screw rpm
Gate location
and/or size
• Relocate gate to nonstress area
• Increase gate size to allow higher flow rate and lower
molded in stress
Fibers on Surface
(Splay)
Melt temperature
too low
• Increase melt temperature
• Increase mold temperature
• Increase injection speed
• Increase screw rpm
Insufficient packing
• Increase pack and hold pressure, and time
• Increase shot size
• Increase gate size
Processing Guide 5
Problem Cause Solution
Sink Marks
Part geometry
too thick
• Reduce wall thickness
• Reduce rib thickness
• Maintain nominal wall thickness
Melt too hot • Decrease nozzle and barrel temperatures• Decrease mold temperature
Insufficient
material volume
• Increase shot size
• Increase injection rate
• Increase pack pressure/time
• Increase gate size
Flash
Injection pressure
too high
• Decrease injection pressure
• Increase clamp pressure
• Decrease injection rate
• Increase transfer position
Excess
material volume
• Decrease pack pressure
• Decrease shot size
• Decrease injection rate
Melt and/or mold
too hot
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Decrease screw speed
Excessive Shrink Too much orientation
• Increase packing time and pressure
• Increase hold pressure
• Decrease melt temperature
• Decrease mold temperature
• Decrease injection speed
• Decrease screw rpm
• Increase venting
• Increase cooling time
Not Enough Shrink Too little orientation
• Decrease packing pressure and time
• Decrease hold pressure
• Increase melt temperature
• Increase mold temperature
• Increase injection speed
• Increase screw rpm
• Decrease cooling time
Troubleshooting Recommendations
6 Therma-Tech
Troubleshooting Recommendations
Problem Cause Solution
Burning
Melt and/or mold
too cold
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Decrease injection rate
Mold design • Clean, widen and increase number of vents• Increase gate size or number of gates
Moisture • Verify material is dried at proper conditions
Nozzle Drool Nozzle temperature too hot
• Decrease nozzle temperature
• Decrease back pressure
• Increase screw decompression
• Verify material has been dried at proper conditions
Weld Lines
Melt front temperatures
are too low
• Increase pack and hold pressure
• Increase melt temperature
• Increase vent width and locations
• Increase injection rate
• Increase mold temperature
Mold design
• Decrease injection rate
• 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
Warp
Excessive orientation
• Increase cooling time
• Increase melt temperature
• Decrease injection pressure and injection rate
Mold design • Increase number of gates
Sticking in Mold
Cavities are
overpacked
• Decrease injection rate and pressure
• Decrease pack and hold pressure
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Increase cooling time
Mold design • Increase draft angle
Part is too hot
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Increase cooling time
1.844.4AVIENT
www.avient.com
Copyright © 2020, Avient Corporation.
https://www.avient.com/sites/default/files/2025-04/OnForce - electronic card reader case study snapshot.pdf
AUTOMOTIVE
MOLDER TIER 1
E L E C T R O N I C C A R D R E A D E R
P A R T F O R M U L T I M E D I A H U B
• Aluminum replacement
• Good mechanical properties
• PP with 40% Long Glass Fiber
• Meet the strict automotive OEM specification
• Designed a material solution to obtain all critical
mechanical criteria and supply the OEM in a short
timeframe
• Delivered tailored strategy while offering global
reach
OnForce Long Fiber Reinforced
Thermoplastic Formulations
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/products/long-fiber-technology/long-fiber-technologies/onforce-long-glass-fiber-reinforced-polypropylene-composites
Default Section
Slide 1: Automotive Molder tier 1
https://www.avient.com/products/thermoplastic-elastomers/tpe-knowledge-center/technical-bulletins/sbc-design
Gordon Glass™ Archery Bow Limbs
OnForce™ Long Glass Fiber Reinforced Polypropylene Composites
Long Glass Fiber Reinforcement
https://www.avient.com/sites/default/files/2022-04/Sustainable Material Answers_ Recycled PET 2022_0.pdf
PET and rPET
are also popular options for manufacturers because they are cost-effective
materials compared to alternatives like glass and aluminum.
Energy Efficient
PET takes less energy to manufacture than alternative materials like glass.
STAGE SOLUTION CAPABILITIES
Polymer Recycling ColorMatrix™ rePrize™ - Increases intrinsic viscosity to enhance use of recycled PET
- Reduces yellowing and decontamination
Materials Selection ColorMatrix™ Joule™ RHB - Reduces the energy required and costs
- Ensures minimal yellowing and light-weighting
Preform Molding ColorMatrix™ AAzure™ - Reduces yellowing and acetaldehyde levels for improved
bottled strength
Preform Molding ColorWorks™ - Provides a range of possible colors for end products based
on the color of the rPET available for use
Preform Molding Rejoin™ PCR Masterbatch - Combines pigments and functional additives with a 100% PCR carrier
for polyolefins
- Enables packaging that is 100% PCR
Bottle Blowing & Filling ColorMatrix™ Optica™ - Excellent acid & thermal stability to reduce yellowing and create
a haze-free container
Bottle Blowing & Filling ColorMatrix™ Smartheat RHC™
Process Aid
- Optimizes weight distribution to increase bottle strength and quality
- Reduces energy required and costs
Sales, Distribution,
Consumption
ColorMatrix™ Amosorb™ - Scavenges oxygen to extend the shelf life and preserve the
freshness of food or beverages within container
Sales, Distribution,
Consumption
ColorMatrix™ Ultimate™ UV - Blocks ultraviolet light transmission to protect the container
and its contents
- Enables light-weighting
Sales, Distribution,
Consumption
ColorMatrix™ Lactra™ - High-performance light blocking that extends the shelf life
of light-sensitive dairy products
Taking the
Next Steps
Move Your Sustainability to the Next Level
Because sustainable material solutions and technology are evolving at
the speed of life, it takes fresh thinking, agile R & D, and imaginative use
of next-generation materials to bring
life-changing products to market safely and quickly.