https://www.avient.com/sites/default/files/2024-10/Replacing Aluminum with Long Fiber Thermoplastics _LFT_ Application Bulletin.pdf
Injection Molding - Thermoplastics
Injection molding creates molded parts by injecting
heated, molten plastic materials into a mold,
which are then cooled and solidified.
This design flexibility also enables engineers
to reassess assemblies and take advantage of
consolidating multiple parts into one molded
offering.
Injection molded long fiber composites deliver
comparable performance characteristics to
metals and offer excellent strength-to-weight
ratios.
https://www.avient.com/sites/default/files/2020-10/mulch-films-case-study.pdf
Mulch films case study
BIODEGRADABLE &
COMPOSTABLE
M U L C H F I L M S
• Compliance with European Standard EN17033 or OK
Compost
• Black and white color standards available
under different TÜV Austria certifications
(OK Compost and more)
• Full support for end-product certification for
both EN13432 and EN17033
• Formulated with pigments tested and
approved by certified body
OnColor™ Bio-Colorants
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/sites/default/files/2021-05/certincorporation-64590-17may2021.pdf
Certificate of Incorporation
AVIENT NEW ZEALAND LIMITED
64590
NZBN: 9429040671338
This is to certify that HOECHST (NEW ZEALAND) LIMITED was incorporated under the Companies Act
1955 on the 3rd day of May 1963
and changed its name to HOECHST NEW ZEALAND LIMITED on the 30th day of January 1974
and was reregistered to become a company under the Companies Act 1993 on the 3rd day of April
1995
and changed its name to CLARIANT (NEW ZEALAND) LIMITED on the 27th day of June 1997
and changed its name to AVIENT NEW ZEALAND LIMITED on the 17th day of May 2021.
Registrar of Companies
17th day of May 2021
Certificate generated 17 May 2021 09:10 AM NZST
https://www.avient.com/sites/default/files/2020-12/therma-tech-processing-guide.pdf
Mold Design Recommendations
Gates
1.
Hot runner molds are acceptable and should be sized by the manufacturer.
Maintain a minimum draft angle of 1° per side.
4 Therma-Tech
Incomplete Fill
Melt and/or mold
too cold
• Increase nozzle and barrel temperatures
• 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 cushion
• Decrease transfer position
Brittleness
Low melt
temperature
• 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 injection speed
• Increase screw rpm
Insufficient packing
• Increase pack and hold pressure, and time
Processing Guide 5
Sink Marks
Part geometry
too thick
• Reduce wall thickness
• Reduce rib thickness
• Maintain nominal wall thickness
Melt too hot • Decrease nozzle and barrel temperatures
Insufficient
material volume
• Increase pack pressure/time
Flash
Injection pressure
too high
• Decrease injection pressure
• Increase clamp pressure
• Increase transfer position
Excess
material volume
• Decrease pack pressure
• Decrease shot size
Melt and/or mold
too hot
• Decrease screw speed
Excessive Shrink Too much
orientation
• Increase packing time and pressure
• Increase hold pressure
• Decrease melt temperature
• Decrease injection speed
• Decrease screw rpm
• Increase venting
Not Enough Shrink Too little
orientation
• Decrease packing pressure and time
• Decrease hold pressure
• Increase injection speed
• Increase screw rpm
• Decrease cooling time
6 Therma-Tech
Burning
Melt and/or mold
too cold
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 vent width and locations
Mold design
• 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
• 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
Mold design • Increase draft angle
Part is too hot
1.844.4AVIENT
www.avient.com
Copyright © 2020, Avient Corporation.
https://www.avient.com/sites/default/files/2021-04/certificate-of-incorporation-on-change-of-name-avient-colorants-ireland-limited-14-april-2021.pdf
G1QCertificate
Number: 82756
Certificate of Incorporation on Change Of Name
For Registrar of Companies
I hereby certify that
CLARIANT PLASTICS & COATINGS (IRELAND) LIMITED
having, by a Special Resolution of the Company,
and with the approval of the Registrar of Companies,
changed its name, is now incorporated as a
LTD - Private Company Limited by Shares
under the name
AVIENT COLORANTS IRELAND LIMITED
and I have entered such name on the Register accordingly.
https://www.avient.com/knowledge-base/article/how-lightweight-automotive-components?rtype[]=1164
Injection-molded polymers can streamline assembly steps and eliminate secondary finishing processes, such as protective coatings and paint, enhancing production efficiency.
Engineered polymers and specialty composites are gaining popularity because they can achieve metal-like performance while providing design flexibility through injection molding.
LFTs still offer the ease of injection molding, like short-fiber polymers, but the fiber length and type (glass, carbon, etc.) are key factors in the strength, stiffness, and durability of plastics.
https://www.avient.com/knowledge-base/article/how-lightweight-automotive-components?sust[]=1165
Injection-molded polymers can streamline assembly steps and eliminate secondary finishing processes, such as protective coatings and paint, enhancing production efficiency.
Engineered polymers and specialty composites are gaining popularity because they can achieve metal-like performance while providing design flexibility through injection molding.
LFTs still offer the ease of injection molding, like short-fiber polymers, but the fiber length and type (glass, carbon, etc.) are key factors in the strength, stiffness, and durability of plastics.
https://www.avient.com/knowledge-base/article/how-lightweight-automotive-components
Injection-molded polymers can streamline assembly steps and eliminate secondary finishing processes, such as protective coatings and paint, enhancing production efficiency.
Engineered polymers and specialty composites are gaining popularity because they can achieve metal-like performance while providing design flexibility through injection molding.
LFTs still offer the ease of injection molding, like short-fiber polymers, but the fiber length and type (glass, carbon, etc.) are key factors in the strength, stiffness, and durability of plastics.
https://www.avient.com/knowledge-base/article/how-lightweight-automotive-components?ind[]=6601
Injection-molded polymers can streamline assembly steps and eliminate secondary finishing processes, such as protective coatings and paint, enhancing production efficiency.
Engineered polymers and specialty composites are gaining popularity because they can achieve metal-like performance while providing design flexibility through injection molding.
LFTs still offer the ease of injection molding, like short-fiber polymers, but the fiber length and type (glass, carbon, etc.) are key factors in the strength, stiffness, and durability of plastics.
https://www.avient.com/sites/default/files/2020-10/mulch-films-case-study-french.pdf
BIODÉGRADABLE ET
COMPOSTABLE
F I L M S D E P A I L L A G E
• Conforme à la norme européenne EN17033 et certifiée OK
Compost
• Disponibles en noir ou blanc en standard
avec différentes certifications TÜV Austria
(OK Compost, etc
• Prise en charge totale de la certification du
produit final pour les normes EN13432 et
EN17033
• Formulé avec des pigments testés et
approuvés par un organisme certifié
OnColor™ Bio-Colorants
PRINCIPALES EXIGENCES
POURQUOI AVIENT ?