https://www.avient.com/sites/default/files/2020-09/surround-processing-guide-2020.pdf
These materials utilize long fiber
technology and exhibit enhanced shielding effectiveness versus standard short fiber conductive polymers.
Furthermore, Surround formulations offer improved performance in the areas of creep and fatigue resistance,
dimensional stability, and surface finish when compared to traditional highly-filled, short fiber formulations.
TEMPERATURE
Material Rear
Center
Front
Nozzle
Melt
Mold
Nylon 6,6
540–570
530–560
530–560
540–570
540–570
200–300
(90–150)
Nylon 6,6
30% SS
540–570
530–560
530–560
540–570
540–570
200–300
(90–150)
PBT
510–410
(265–280)
490–540
(255–280)
480–530
480–530
480–530
150–250
(65–120)
PC
14% NiCF
540–570
540–570
530–560
530–560
530–560
150–250
(65–120)
ABS
470–520
460–520
460–520
460–530
(240–275)
460–530
(240–275)
100–200
(40–90)
PP
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/knowledge-base/case-study/military-grade-protection-us-soldiers?rtype[]=1164
GlasArmor panels made with fiber-reinforced polymer (FRP) composites provide excellent ballistic stopping power for the MPS while meeting the requirement of being lightweight and portable.
They are constructed from layers of 0°/90° woven E-glass fiber reinforcements combined with a proprietary resin system in a continuous pultrusion manufacturing process.
https://www.avient.com/knowledge-base/case-study/military-grade-protection-us-soldiers?ind[]=6595
GlasArmor panels made with fiber-reinforced polymer (FRP) composites provide excellent ballistic stopping power for the MPS while meeting the requirement of being lightweight and portable.
They are constructed from layers of 0°/90° woven E-glass fiber reinforcements combined with a proprietary resin system in a continuous pultrusion manufacturing process.
https://www.avient.com/sites/default/files/2025-07/Onforce LFT-Cell Filter Frame-case study snapshot.pdf
PowerPoint Presentation
BIOPHARMACEUTICAL
MANUFACTURER
C E L L F I L T E R F R A M E
• Excellent product smoothness
• Welding without overflow
• Maintain burst pressure above 6 bar+
• Pre-colored solution
• Provided a reinforced thermoplastic with
long glass fiber that offered a noticeable
improvement compared to short fiber in
stiffness and strength properties
• Delivered custom pre-colored specialty
engineered formulations for color
consistency
• Offered a solution that injection molded well
for welds that did not exhibit overflow
OnForce Long Glass Fiber Reinforced
Polypropylene Composites
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/products/long-fiber-technology/long-fiber-technologies/onforce-long-glass-fiber-reinforced-polypropylene-composites
Slide 1: biopharmaceutical Manufacturer
https://www.avient.com/sites/default/files/2023-12/Complet LFT OHP Side by Side Seat Pan %281%29.pdf
OFF-ROAD VEHICLE
MANUFACTURER
S E A T P A N
• Consolidate parts to reduce assembly time and lower
manufacturing costs
• Maintain performance while replacing metal seat pan with
lightweight composite material
• Aided consolidation of multiple metal parts
and fasteners into a single injection molded
component, lowering costs $100k year
• Saved time and money using FEA validation
to confirm real-world performance before
building tooling
• Created full-size 3D printed prototypes to
test fit and function
Complēt™ Long Glass Fiber Nylon Composite
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/products/long-fiber-technology/long-fiber-technologies/compl-t-long-fiber-reinforced-structural-thermoplastics
https://www.avient.com/sites/default/files/2021-10/bergamid-house-of-sports-gun-case-study-one-pager-1020.pdf
UTG® HUNTING &
SHOOTING SPORTS
G U N M A G A Z I N E H O U S I N G
• Good dimension stability with low warpage at different
temperature ranges (70˚C, room temperature, -40˚C)
• Good appearance with less glass fiber exposure
• Provided durable and impact-resistant glass
fiber reinforced formulation with excellent
surface finish and good dimensional stability
for smooth operation
• Passed all temperature durability and drop tests
to confirm use in outdoor environments
• Collaborated with customer via technology
services to accelerate product development
Bergamid™ Customized Polyamide
Formulation
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations/short-fiber-reinforced-formulations
https://www.avient.com/sites/default/files/2021-01/eccoh-cpr-product-bulletin.pdf
Optical fiber sheathing1 5702
SEPAP 8.0 10.5 140 47 Cca
Specially formulated for optical fiber
applications where the SEPAP UV test is
required.
Optical fiber sheathing1 5924 UV 3.9 11.5 170 39 Dca
Medium char formation, high flame
retardancy, UV resistance and good
Optical fiber sheathing1 5501 UV 11.0 11.5 170 35 Dca Easy processing and enhanced UV
resistance.
Optical Fiber Loose Tube PF 1043 2.1 15 190 40 Medium stiffness for dry loose tubes.
https://www.avient.com/sites/default/files/2020-08/eccoh-cpr-product-bulletin.pdf
Optical fiber sheathing1 5702
SEPAP 8.0 10.5 140 47 Cca
Specially formulated for optical fiber
applications where the SEPAP UV test is
required.
Optical fiber sheathing1 5924 UV 3.9 11.5 170 39 Dca
Medium char formation, high flame
retardancy, UV resistance and good
Optical fiber sheathing1 5501 UV 11.0 11.5 170 35 Dca Easy processing and enhanced UV
resistance.
Optical Fiber Loose Tube PF 1043 2.1 15 190 40 Medium stiffness for dry loose tubes.
https://www.avient.com/products/polymer-additives/colorants-and-additives-wire-cable/cesa-laser-additives
Avient Solutions for Fiber Optic Cable
Explore material solutions for fiber optic cable, including engineered fibers, specialty engineered materials, colorants, and additives
https://www.avient.com/resource-center?document_type=59&document_subtype=0&industry=0&product_family=0&product_name=0&op=FILTER RESULTS&form_id=resource_filter_form&page=6
LFT Basics - Understanding Long Fiber Thermoplastics
Learn about long fiber technology and why it’s replacing metal.
Fiber-Line™ Specialty Engineered Thermoplastic Tapes