https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-processing-guide.pdf
Place vents at each 90° intersection and vent to atmosphere.
6.
Increase nozzle tip diameter
6.
Perform short shots to determine fill
pattern and verify proper vent location
6.
https://www.avient.com/sites/default/files/2024-04/OnColor Orange Nylon Colorant for EV Connectors Application Bulletin.pdf
Orange Nylon Colorants
for High-Voltage Electric Vehicle (EV) Connectors
The electric vehicle (EV) industry is growing
rapidly as governments worldwide encourage
sustainable energy.
This is where Avient’s orange nylon colorants can
help.
Its portfolio of OnColor™ polymer colorants
was developed to improve the heat and long-term
color stability of cautionary orange polymers for
high-voltage EV connectors, offering the following
benefits:
• Long-term fading resistance in thermal aging
tests at up to 130°C for 1,000 hours,
• No migration, excellent processing stability
• Lower corrosion risk vs. typical comparable
colorants
• No impact on flame retardancy and limited
adverse effects on essential mechanical
characteristics, including flexural and impact
strength
Avient’s orange nylon colorants are available in
several validated RAL, Pantone, and JPMA orange
shades for compounding, injection molding, and
extrusion.
https://www.avient.com/industries/consumer/consumer-discretionary/home-household/housewares-accessories
Alternatives to Nylon 6,6
Nylon Solutions Engineered Thermoplastics (Chinese)
Nymax™ Glass and Mineral Fiber Reinforced Nylon 6 Formulation delivers service and performance for transportation OEM
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.
In addition, the Nymax™ REC series offers PA6 and PA66 grades with post-industrial recycled (PIR)
or post-consumer recycled (PCR) nylon to support a circular economy.
Degraded/
overheated
material
• Decrease melt temperature
• Decrease back pressure
• Use smaller barrel
• Decrease injection speed
Gate location
and/or size
• Relocate gate to nonstress area
• Increase gate size to allow higher flow rate
and lower molded in stress
Fibers/Minerals on
Surface or Uneven
Surface Appearance
Melt temperature
too low
• Increase melt temperature
• Increase mold temperature
• Increase injection speed
Insufficient packing • Increase hold pressure and time• Increase shot size
Processing Guide 5
Problem Cause Solution
Sink Marks
Part geometry
too thick
• Reduce wall thickness
• Reduce rib thickness
Melt too hot • Decrease nozzle and barrel temperatures• Decrease mold temperature
Insufficient
material volume
• Increase shot size
• Increase injection rate
• Increase packing pressure
• Increase gate size
Flash
Injection pressure
too high
• Decrease injection pressure
• Increase clamp pressure
• Decrease injection rate
• Increase transfer position
Excess
material volume
• Adjust transfer position
• 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
Loose clamp • Reset mold height• Increase clamp tonnage
Shrink
Too much
shrink
• Increase cooling time
• Decrease mold temperature
Too little
shrink
• Decrease cooling time
• Increase mold temperature
Troubleshooting Recommendations
6 Nymax Polymer Formulations
Troubleshooting Recommendations
Problem Cause Solution
Burning
Process related
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Decrease injection rate
Mold design • Clean, widen and increase number of vents• Increase gate size to reduce shear
Wet material
• Check moisture.
https://www.avient.com/sites/default/files/resources/Novel_Thermoplastic_Elastomers_with_Universal_Bonding_Characteristics.pdf
The substrates materials
employed for overmolding were PP, ABS, PC/ABS, polyester, Nylon and POM.
Compared to other substrates, Nylon and polyacetal, i.e., POM,
appear to be difficult to bond.
Adhesion value of TPE-2 on different substrates
TPE-2A TPE-2B
Substrate
Peel Strength
(N/mm) Failure Type
Peel Strength
(N/mm)
Failure Type
PP 4.9 Adhesive 3.6 Adhesive
PET 1.2 Adhesive 3.9 Adhesive
PC/ABS 3.3 Adhesive 4.0 Adhesive
ABS - Adhesive 4.3 Adhesive
Nylon 1.2 Adhesive 2.7 Adhesive
POM 1.1 Adhesive 1.9 Adhesive
6
Figure 3.
https://www.avient.com/sites/default/files/2021-10/microbial-susceptibility-of-various-polymers-and-evaluation.pdf
For ASTM G21-15, most polymer compounds
also exhibited marginal or no change in fungal growth
with the added texture, except for nylon-6; trace growth
(rating = 1) was observed on the smooth surface while
heavy growth (rating = 4) occurred on the textured sur-
face.
Control samples (top row) are shown for comparison to samples post-incubation and washing (bottom row)
TABLE 1 Summary of ASTM G21 results for initial
susceptibility screening of untreated resins/compounds
Fungal growth Resin/compound
4 = Heavy growth (61%–
100% coverage, fail)
TPE, 6 formulations
3 = Moderate growth
(31%–60% coverage,
fail)
Poly(urethane), 2 formulations
2 = Light growth (11%–
30% coverage, fail)
Nylon-6,10, PBT, poly(amide)
elastomer, ABS, 3 formulations,
reinforced Nylon, 2 formulations
1 = Trace growth (
CFU, colony-forming unit; ZPT, zinc pyrithione
6 ZANDER ET AL.
https://www.avient.com/investor-center/news/polyone-announces-second-quarter-2018-results
In addition, certain raw materials such as nylon 6/6 and fluoropolymers continue to be in short supply."
Attachment 6
https://www.avient.com/sites/default/files/resources/Overmolding_of_Thermoplastic_Elastomers_Engineered_solutions_for_consumer_product_differentiation.pdf
Rigid substrates include polypropylene(PP), polyethylene (PE),
amorphous polar plastics such as polycarbonate (PC), polymethylmethacrylate (PMMA), polystyrene (PS), high
impact polystyrene(HIPS), polyphenylene oxide (PPO), glycol modified polyethylene terephthalate (PETG),
Acrylonitrile Butadiene Styrene (ABS), semicrystalline polar plastics such as polyester (PET, PBT) and
Polyamide (Nylon 6, Nylon 66).
Copolyesters and
6.
Selective commercial
grades of TPEs and developmental TPEs bond to crystalline polymers such as Acetal (POM), Nylon 6, Nylon
6,6, Copolyester , Polybutylene terephthalate (PBT).
https://www.avient.com/resources/safety-data-sheets?page=2798
S1701NP NYLON PLUS AQUA
S1201NP NYLON PLUS BROWN
PP FR 8-6 LMS-1000
https://www.avient.com/resources/safety-data-sheets?page=2797
S1100NP NYLON PLUS WHITE
S1500NP NYLON PLUS PURPLE
PP FR 8-6 LMS-1000