https://www.avient.com/sites/default/files/2020-09/stat-tech-tri-fold-processing-guide.pdf
These materials combine the performance
of select engineering resins with reinforcing additives, such as carbon powder, carbon fiber, nickel-coated carbon fiber and
stainless steel fiber, for low-to-high levels of conductivity depending upon application requirements.
PROBLEM CAUSE SOLUTION
Incomplete Fill Melt and/or mold
temperature too cold
Shot Size
• Increase nozzle and barrel temperatures
• Increase mold temperature
• Increase injection speed
• Increase pack and hold pressure
• Increase nozzle tip diameter
• Check thermocouples and heater bands
• 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
• Increase cushion
Brittleness Melt temperature too low
Degraded/Overheated material
Gate location and/or size
• Increase melt temperature
• Increase injection speed
• Measure melt temperature with pyrometer
• Decrease melt temperature
• Decrease back pressure
• Use smaller barrel/excessive residence time
• Relocate gate to nonstress area
• Increase gate size to allow higher flow speed
and lower molded-in stress
Fibers on Surface
(Splay)
Melt temperature too low
Insufficient packing
• Increase melt temperature
• Increase mold temperature
• Increase injection speed
• Increase pack and hold pressure, and time
Sink Marks Part geometry too thick
Melt temperature too hot
Insufficient material volume
• Reduce wall thickness
• Reduce rib thickness
• Decrease nozzle and barrel temperatures
• Increase shot size
• Increase injection rate
• Increase packing pressure
Flash Injection pressure too high
Excess material volume
Melt and/or mold
temperature too hot
• Decrease injection pressure
• Increase clamp pressure
• Decrease injection speed
• Increase transfer position
• Decrease pack pressure
• Decrease shot size
• Decrease injection speed
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Decrease screw speed
TROUBLESHOOTING RECOMMENDATIONS
PROBLEM CAUSE SOLUTION
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
Burning Melt and/or mold
temperature too hot
Mold design
Moisture
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Clean, widen and increase number of vents
• Increase gate size or number of gates
• 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
too low
• Increase pack and hold pressure
• Increase melt temperature
• Increase vent width and locations
• Increase injection speed
• Decrease injection speed
• 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 speed
• Increase number of gates
Sticking in Mold Cavities are overpacked
Part is too hot
• Decrease injection speed and pressure
• Decrease pack and hold pressure
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
• Increase cooling time
• Increase draft angle
• Decrease nozzle and barrel temperatures
• Decrease mold temperature
TROUBLESHOOTING RECOMMENDATIONS
www.avient.com
Copyright © 2020, Avient Corporation.
https://www.avient.com/sites/default/files/2021-04/b-c-industry-bulletin.pdf
BUILDING &
CONSTRUCTION
INDUSTRY BULLETIN
SAFETY
Security and
prevention
SOLUTION: Flame
retardants, laser
marking additives,
electrical and thermal
additives
SURFACE FINISH
Low maintenance,
natural wood grain aesthetics
SOLUTION: Wood plastic composite
(WPC) capstock technology
PROTECTION
Potable water tanks, electrical
connectors, piping & tubing, insulation
SOLUTION: Antimicrobials, electrical
and thermal additives
LONGEVITY
Long service life, chemical resistance,
mold & mildew resistance
SOLUTION: Weatherable colorants,
impact modifiers, antimicrobial
additives
SUSTAINABILITY
LEED building & material credits, healthy building,
reduced energy use, lightweighting, eco-conscious
SOLUTION: Recycled materials, chemical foaming
agents, bio-derived colorants & additives
LANDSCAPE HARMONY
Concrete surfaces, patio coloring, stucco
SOLUTION: Pool colorants, metallic
flooring colorants, stains
The building and construction industry
is dynamic, with trends towards high-
performance buildings, elegant outdoor
areas, healthier living spaces, and
eco-friendly environments.
DESIGN & PROCESSING
Material flexibility and customization, extrusion
and molding optimization techniques
SOLUTION: Advanced polymer science,
application development, technical service
VISUAL AESTHETICS
Custom colors, deep shades,
special effects
SOLUTION: Metallic colorants,
granite & woodgrain effects
DURABILITY
Wind & impact resistance,
chemical resistance, weatherability
SOLUTION: Scratch & mar resistant
or IR/UV resistant additives,
dimensional stabilizers
TECHNOLOGY DESCRIPTION TYPICAL APPLICATIONS
Antimicrobial
Antimicrobial technology to limit microbe growth—
reduces bacterial, mold and fungal growth on surface
and through thickness, protecting finished part
• Potable water equipment • Roofs & eaves
• Decking, fencing & railings • High-touch surfaces
• Bath surrounds, liners & inserts
Scratch & Mar Resistance
For applications requiring resistance to daily surface
abrasion, and management of surface energy
• Exterior fencing, decking, railings & shutters
• Outdoor furniture
• Playground equipment
Flame Retardant
Reduces spread of fire and heat release by creating
a char to limit oxygen at the flame source
• Wire & cable • Telecommunications
• Decking, fencing & railings • Conduit
• Exterior siding & cladding • Housings
UV and Light Blocking
UV stabilizers help mitigate the harmful effects of
UV radiation while light blocking additives protect
products sensitive to light
• Exterior siding & cladding • Trim & moldings
• Roofing, shingles, tiles • Outdoor furniture
• Fencing, decking, railings & shutters
Anti-static and Conductive
Controls build-up of static charges to create
static-dissipated parts while reducing related
dust accumulation
• Electrical connectors • Conduit or tubing
• Junction boxes • Flooring
• 5G enabling
Chemical Foaming
Agents
Reduces weight and density without compromising
mechanical properties
• Exterior siding & cladding • Modular panels
• Decking, fencing & railings
Optimization Additives
Cycle-time reducers that help optimize production
while allowing improved dimensional stability and
energy efficiency, among other processing benefits
• Used in extrusion and injection molding processes
to improve thermal conductivity, and lower
processing temperatures and energy consumption
Laser Marking
Supports design and production flexibility and offers
a new level of control in marking polymers with speed
and clarity
• Wire & cable • Outdoor furniture
• Equipment & housings • Pipes & fittings
Anti-counterfeiting
Customizable in-plastic authentication technologies
that enable positive identification versus counterfeit
products
• Wire & cable jacketing • Pipes & fittings
• Telecommunications • Potable water
equipment
Wood Plastic Composite (WPC)
Capstock Technology
Pair with traditional WPC materials as a substrate
for a durable outer layer
• Exterior siding & cladding • Outdoor furniture
• Fencing, decking & railings
Sustainable Colorants &
Color concentrates and additives carefully chosen
to meet industry requirements and legislation, and
designed to lower environmental impact while
improving sustainability
• Green building roofing • OSHA compliance
• Sheet & profile extrusions • LEED building &
material credits
FX Special Effects
Colorants
Granite, marbling, woodgrain and other distinctive
colorant technologies to provide special surface
effects
• Decorative molding • Chair or hand rails
• Wallcovering • Blinds & shutters
• Any surface or part demanding a distinctive look
Pool Colorants Durable, long-lasting pigment formulations for
finishes that hold up to pool water chemistries
• Pool decks • Coping
• In-ground swimming pools
Metallic Flooring &
Stain Colorants
Colorants designed to give concrete floors and
surfaces a distinctive appearance
• Concrete flooring • Countertops
• Decorative concrete • Walls
While this listing represents many Avient solutions and addresses common applications, we can tackle many other
building & construction needs.