https://www.avient.com/knowledge-base/article/what-s-difference-fillers-reinforcements?ind[]=21509
2http://www.aerosil.com/product/aerosil/en/industries/plastics-thermoplastics/pages/default.aspx
Long- and short- can be used in thermoplastic compounds for lightweight, high-end reinforcement.
https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/compl-t-long-fiber-reinforced-structural-thermoplastics
https://www.avient.com/knowledge-base/article/what-s-difference-fillers-reinforcements?ind[]=6598
2http://www.aerosil.com/product/aerosil/en/industries/plastics-thermoplastics/pages/default.aspx
Long- and short- can be used in thermoplastic compounds for lightweight, high-end reinforcement.
https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/compl-t-long-fiber-reinforced-structural-thermoplastics
https://www.avient.com/knowledge-base/article/what-s-difference-fillers-reinforcements?rtype[]=1164
2http://www.aerosil.com/product/aerosil/en/industries/plastics-thermoplastics/pages/default.aspx
Long- and short- can be used in thermoplastic compounds for lightweight, high-end reinforcement.
https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/compl-t-long-fiber-reinforced-structural-thermoplastics
https://www.avient.com/knowledge-base/article/what-s-difference-fillers-reinforcements
2http://www.aerosil.com/product/aerosil/en/industries/plastics-thermoplastics/pages/default.aspx
Long- and short- can be used in thermoplastic compounds for lightweight, high-end reinforcement.
https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/compl-t-long-fiber-reinforced-structural-thermoplastics
https://www.avient.com/sites/default/files/2023-03/Avient Annual Report 2022.pdf
Thermoplastics offer versatility and a wide range of applications.
Garratt
worked for DuPont Dow Elastomers, a joint venture of Dupont and Dow (global manufacturers of engineered
13 AVIENT CORPORATION
thermoset rubber and thermoplastic elastomer materials) in market development and product management
positions, culminating in a regional commercial leadership role for Europe, the Middle East and Africa.
Our product portfolio, which we believe to be one of the most diverse in our industry,
includes specialty formulated high-performance polymer materials that are manufactured using thermoplastic resins
and elastomers, which are then combined with advanced polymer additives, reinforcement, filler, colorant and/or
biomaterial technologies.
https://www.avient.com/sites/default/files/2022-03/Avient 2021 Annual Report.pdf
Thermoplastics offer versatility and a wide range of applications.
Garratt worked for DuPont
Dow Elastomers, a joint venture of Dupont and Dow (global manufacturers of engineered thermoset rubber and
thermoplastic elastomer materials) in market development and product management positions, culminating in a
regional commercial leadership role for EMEA.
Our product portfolio, which we believe to be one of the most diverse in our industry,
includes specialty formulated high-performance polymer materials that are manufactured using thermoplastic resins
and elastomers, which are then combined with advanced polymer additives, reinforcement, filler, colorant and/or
biomaterial technologies.
https://www.avient.com/products/polymer-colorants/healthcare-colorants/mevopur-healthcare-colorants-and-formulations
Healthcare Thermoplastics: Trilliant™ HC
https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-design-guide-.pdf
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Four Main Areas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Obtain Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Strategy Theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Defects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Angel Hair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Burns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Delamination. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Dimension – Small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Dimension – Large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Distortion / Deformation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Flash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Jetting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Plate-Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Short Shot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Sink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Splay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Surface Finish. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Gate Vestige. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Voids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Warpage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Weld Lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
The Injection Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Non-Return Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Nozzle Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Important Advice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
The Clamping Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Mold Design Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Determining Cooling Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Cooling Line Spacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Bibliography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Design Guide 5
CHAPTER 1 | PRODUCT SUMMARY
GRAVI-TECH™ DENSITY MODIFIED FORMULATIONS
High-Performance Alternative to Lead and Other Traditional Metals
PRODUCT DESCRIPTION
Gravi-Tech™ polymer-metal composites offer
a high-performance thermoplastic-based
alternative to lead and other traditional dense
metals.
KEY CHARACTERISTICS
The primary features and benefits
of Gravi-Tech formulations are:
• Customized density, offering a wide range of
specific gravities from 1.5 to 11 gm/cm3
• Broad modulus range, from very flexible to
very rigid grades
• Corrosion resistance, withstanding oxidation
for long-term use and benefit
• Chemical resistance, withstanding fuels, oils
and other harsh chemicals
Additional features include:
• Design flexibility and processing ease
• Good impact strength
• Elevated heat deflection temperature
6 Gravi-Tech Design Guide 7
CHAPTER 2 | PROCESS SETTINGS
Density Modified Formulations
Gravi-Tech™ polymer-metal composites are high-density materials developed as thermoplastic-based
alternatives to lead and other traditional metals.
These materials have been formulated using select metallic
fillers and engineered thermoplastic resins to have densities similar to actual metals, while also providing the
design flexibility and processing ease of conventional thermoplastics.
https://www.avient.com/resource-center?document_subtype=127&document_type=59&form_build_id=form-Ojq3VtEkRrXIsgZSyKvAgO_Z3JHuKtjJLR7xfOXoAI8&form_id=resource_filter_form&industry=0&op=FILTER RESULTS&product_family=81&product_name=0&product_subfamily=0&page=0
Versaflex™ TPE Formulation provided chemical resistance and bonding for EV charging gun grip
https://www.avient.com/resource-center/services/avient-design/industrial-design
Avient Design services and a custom Versaflex™ wet grip TPE combine to deliver an optimized and aesthetically differentiated fishing tool for outdoor gear OEM