https://www.avient.com/sites/default/files/2020-09/surround-processing-guide-2020.pdf
TEMPERATURE Material Rear °F (°C) Center °F (°C) Front °F (°C) Nozzle °F (°C) Melt °F (°C) Mold °F (°C) Nylon 6,6 14% NiCF 540–570 (280–300) 530–560 (275–290) 530–560 (275–290) 540–570 (280–300) 540–570 (280–300) 200–300 (90–150) Nylon 6,6 30% SS 540–570 (280–300) 530–560 (275–290) 530–560 (275–290) 540–570 (280–300) 540–570 (280–300) 200–300 (90–150) PBT 14% NiCF 510–410 (265–280) 490–540 (255–280) 480–530 (250–275) 480–530 (250–275) 480–530 (250–275) 150–250 (65–120) PC 14% NiCF 540–570 (280–300) 540–570 (280–300) 530–560 (275–290) 530–560 (275–290) 530–560 (275–290) 150–250 (65–120) ABS 14% NiCF 470–520 (240–270) 460–520 (240–270) 460–520 (240–270) 460–530 (240–275) 460–530 (240–275) 100–200 (40–90) PP 14% NiCF 440–480 (225–250) 440–480 (225–250) 430–470 (220–245) 420–460 (215–240) 420–460 (215–240) 125–175 (50–80) DRYING Material Temperature °F (°C) Time Minimum Moisture Maximum Moisture Nylon 6,6 14% NiCF 180 (80) 4–5 hours 0.05% 0.20% Nylon 6,6 30% SS 180 (80) 4–5 hours 0.05% 0.20% PBT 14% NiCF 250 (120) 6-8 hours 0.02% 0.03% PC 14% NiCF 250 (120) 3–4 hours 0.02% 0.02% ABS 14% NiCF 200 (90) 2–4 hours 0.05% 0.10% PP 14% NiCF 180 (80) 2–4 hours 0.20% 0.30% Equipment • Feed throats smaller than 2.5" may cause bridging due to pellet size - Larger feed throats will be more advantageous with long fiber EMI shielding resins • General purpose metering screw is recommended - Mixing/barrier screws are not recommended • L/D ratio - 18:1–20:1 (40% feed, 40% transition, 20% metering) • Low compression ratio - 2:1–3:1 • Deep flights recommended - Metering zone 3.5 mm - Feed zone 7.5 mm • Check ring - Three-piece, free-flowing check ring • General purpose nozzle (large nozzle tips are recommended) - Minimum orifice diameter of 7/32" - Tapered nozzles are not recommended for long fiber EMI shielding resins • Clamp tonnage: - 2.5–5 tons/in2 Gates • Large, free-flow gating recommended - 0.25" x 0.125" land length - 0.5" gate depth Runners • Full round gate design • No sharp corners • Minimum of 0.25" diameter • Hot runners can be used PROCESSING Screw Speed Slower screw speeds are recommended to protect fiber length Back Pressure Lower back pressure is recommended to protect fiber length Pack Pressure 60–80% of max injection pressure Hold Pressure 40–60% of max injection pressure Cool Time 10–30 seconds (depends on part geometry and dimensional stability) PROCESS CONSIDERATIONS Recommended – retain fiber length (maximize conductivity) • Low shear process • Low screw speed and screw RPM • Slow Injection speed • Fill to 99–100% on first stage of injection - Reduces potential nesting of fibers at gate location - Improves mechanical performance near gate location - Promotes ideal fiber orientation Resin Rich Surface • Achieved when using a hot mold temperature and longer cure times ≥ Max mold temperature recommendation • Improved surface aesthetic • Reduced surface conductivity • Could reduce attenuation performance in an assembly Fiber Rich Surface • Achieved when using a cold mold temperature and shorter cure times ≤ Minimum mold temperature recommendation • Improved surface aesthetic • Reduced surface conductivity • Could improve attenuation performance in an assembly www.avient.com Copyright © 2020, Avient Corporation.
https://www.avient.com/sites/default/files/2020-09/sem-stain-resistant-phone-cases-application-bulletin.pdf
Offering premium blue jean stain resistance on par with silicone, this material increases design freedom, boosts speed to market capabilities, and enhances supply chain flexibility at a significantly reduced cost.
Increase speed to market – Avient TPEs have a shorter lead time than silicone and can be processed quickly on high speed injection molding equipment.
https://www.avient.com/sites/default/files/2020-07/sem-w-c-solutions-for-optical-fiber-cable-product-bulletin-a4.pdf
ECCOH™ LSFOH 6153/6154 UV Formulations Improved processing speeds & greater gel resistance for optical fiber cables ECCOH™ LSFOH 6153 UV and 6154 UV grades are low smoke, fume, non-halogen material solutions for optical fiber cables with increased processing speeds and greater resistance to chemicals such as gel water blocking compounds, used to protect optical fibers.
VALUE ECCOH LSFOH grades can run at high processing speeds of up to 1,000 m/min and, with a much lower melting temperature than PBT alternatives, can greatly enhance manufacturing efficiency.
Performing at a lower pressure and with less stress enables a smoother surface finish and can increase processing speeds by up to 15% compared to alternative grades.
https://www.avient.com/sites/default/files/2022-01/Versaflex CE TPEs for 5G Application Bulletin.pdf
Device designs are changing to improve high-speed performance and network connectivity to support faster speeds, higher capacity, and lower latencies for customers.
KEY CHARACTERISTICS • Enables excellent permittivity and low-loss performance for high-speed signal transmission and connectivity • Delivers lower Dk and Df performance compared to standard TPEs • Provides excellent physical properties, UV resistance and aesthetics INDUSTRIES & APPLICATIONS Versaflex CE 3140 TPEs are formulated for use in phone cases to minimize signal loss and enable high-speed connectively for 5G devices to deliver a seamless experience for consumers.
https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-design-guide-.pdf
This is due to the machine transferring from injection speed controlled to pressure controlled.
Injection Speed The injection speed for Gravi-Tech material is most often higher than what is used for other formulations.
Due to this increased heat transfer rate, a faster injection speed should be used to increase the shear heat in the material during injection.
https://www.avient.com/resources/safety-data-sheets?page=2989
SLD 654C HO EPIC SPEED BLUE A2WX
https://www.avient.com/knowledge-base/article/guidelines-coloring-dynaflex-and-kraton-tpes?rtype[]=1164
For coloring TPEs, GLS recommends that you use high screw speeds (100-200 rpm), high back pressure (100psi), and a higher degree of ramping of the temperatures in the barrel.
https://www.avient.com/knowledge-base/article/three-ways-automotive-color-influences-buyers
High-end sports car buyers continue to favor strong colors that indicate speed and strength.
https://www.avient.com/knowledge-base/article/minimize-fogging-food-packaging
If you decide to use additives, taking a collaborative approach with your supplier can help you to speed development times and raise efficiency.
https://www.avient.com/resource-center?document_type=0&industry=0&product_family=84&product_subfamily=0&product_name=0&op=FILTER RESULTS&form_build_id=form-fNS88LG3BRw1MCsEhxqrGzoCcCISeOxlsDfIOUV4Mx0&form_id=resource_filter_form
Demonstrating color development and speed to market with a PCR solution