https://www.avient.com/products/long-fiber-technology/long-vs-short-fiber
Our long fiber products are produced using a pultrusion process in which continuous tows of fiber are pulled through an impregnation die (to introduce polymer and additive solutions) and then chopped to length (typically 12mm) in a pelletizer.
In contrast, short fiber reinforced solutions are produced by introducing pre-chopped fibers (typically 1mm or less) into an extruder where the fibers are mixed with polymer and other additives.
After a pyrolysis study, in which we burn away the polymer to study the remaining fiber, you can see how the structural skeleton of the long fiber part holds its shape and the short fiber part collapses on itself.
https://www.avient.com/news/polyone-features-total-portfolio-healthcare-polymers-and-colorants-mdm-west-2017
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PolyOne Features Total Portfolio of Healthcare Polymers and Colorants at MD&M West 2017
And thanks to our formulation expertise, we can select from nearly any polymer chemistry to drive that success.”
About PolyOne
PolyOne Corporation, with 2016 revenues of $3.3 billion, is a premier provider of specialized polymer materials, services and solutions.
https://www.avient.com/industries/healthcare/drug-delivery-systems/inhalation-devices
Polymer Colorants
Polymer Additives
Engineered Polymers
https://www.avient.com/industries/healthcare/remote-monitoring-wearables/home-care-monitors
Polymer Additives
Polymer Colorants
Engineered Polymer Formulations
https://www.avient.com/resources/safety-data-sheets?page=6823
PINK TRI-LAYER PB V4
BLUE PB TRI-LAYER V4
https://www.avient.com/resources/safety-data-sheets?page=2144
2577C PURP 40% BIS TRI
YELLOW 102C 40% BIS TRI
https://www.avient.com/resources/safety-data-sheets?page=6677
TRL DARK BLUE 540C TRI
TRL LIGHT BLUE 543C TRI
https://www.avient.com/resources/safety-data-sheets?page=3823
TIE DYE RED TRI
TIE DYE BLUE TRI
https://www.avient.com/resources/safety-data-sheets?page=6793
TRI LIGHT GREEN 2412C V2
TRI LIGHT BLUE 2727C V2
https://www.avient.com/resources/safety-data-sheets?page=6356
TRI COSMIC SKY 15-3909 V2
TRI RASPBERRY SORBET 18-2043 V3