https://www.avient.com/investor-center/news/avient-announces-second-quarter-2023-results
I'm pleased with how well we have executed through the first half of the year despite persistent demand weakness and customer inventory destocking," said
We are looking forward to sharing how and where our material science is helping customers achieve their sustainability goals and the megatrends that are underpinning the future growth of our sustainable solutions portfolio."
Senior management uses gross margin before special items and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and how it may serve as a basis for future performance.
https://www.avient.com/news/avient-brings-sustainable-innovation-npe-2024
ORLANDO – May 6, 2024 – Avient Corporation, a premier provider of specialized and sustainable materials solutions and services, invites attendees at NPE 2024 to learn how the company is helping customers solve some of the most pressing challenges facing our industry today, including solutions that enable circularity in addition to solutions that reduce carbon footprint to support sustainability goals, through a dynamic showcase of product launches, sustainability initiatives, and technical seminars.
https://www.avient.com/knowledge-base/article/continuous-fiber-reinforced-thermoplastic-composites?rtype[]=1164
What continuous fiber reinforced thermoplastic composites are, and how they differ from other composite materials
https://www.avient.com/knowledge-base/article/continuous-fiber-reinforced-thermoplastic-composites
What continuous fiber reinforced thermoplastic composites are, and how they differ from other composite materials
https://www.avient.com/knowledge-base/article/beginner-s-guide-tpe
You may also need to think about how you want the product to behave when stretched; there are many stretch properties and tests that can be performed to achieve the appropriate amount of flexibility based on your application.
How are TPEs made?
https://www.avient.com/sites/default/files/2023-11/Cesa Clean Processing Usage Guide.pdf
GUIDELINES FOR USING CESA CLEAN ADDITIVES
• Cesa Clean works best when molded maintaining normal (injection)
pressure/shear
• For best results, Avient recommends a “Running Color Change”
which eliminates breaks in the molding cycle
• Since the Cesa Clean concentrate will expand, it is recommended
to reduce the shot size by 20%
• It is designed for use at a let-down ratio (LDR) of 3.0% or (33:1); however,
use rate can vary depending on the severity of the contamination but
typically is 2.0–4.0% (a use rate higher than 6.0% may not have any
positive affect on the cleaning performance)
• Using Cesa Clean as a routine part of your color change rotation will
allow faster changes and consume a minimal amount of raw material
- Note: If the manifold is not cleaned routinely, this process may be
more time consuming and additional material will be required
• It is best to process at your normal polymer processing temperatures
- For best performance, stock temperature should be at least 400°F
- If 400°F is achieved during the purging process, no additional
activation will occur during the reprocessing of regrind
- All parts produced during the “Running Purge Cycle” should be
captured as regrind, resulting in a scrap-free color change
- If using sequential gates, open and close all gates at the same time
while purging the tool
- If contamination appears to be coming from one gate, open and
close first, and for an extended period of time, to force more material
through this location
- When cleaning in this manner, pay close attention to shot size
- Parts containing the previous or new color plus any Cesa Clean
can be used as regrind
INTRODUCING CESA CLEAN TO YOUR PROCESS
Hand Blend
• Hand weigh enough of the Cesa Clean and
natural resin mix to equate to 3–5 times the
barrel capacity
• Use rate should be 3.0% or 33:1 for routine
cleaning
• For difficult-to-clean tooling, or tooling which
is not routinely cleaned, start at 4.0% or 25:1
• Note: Do not attempt to vacuum load more than
15 feet from source as stratification/separation
may occur
Volumetric Feeder
• Calibrate feeder to dispense 3.0% or 33:1 for
routine cleaning
• For difficult-to-clean tooling, or tooling which
is not routinely cleaned, start at 4.0% or 25:1
• This style of feeder is highly recommended for
at-the-throat metering of Cesa Clean
Blending Units
Most blenders have an extra bin for an additive
• Fill the additive bin with Cesa Clean
• Set blender to introduce the Cesa Clean at
2.0 to 4.0%
• Note: Do not air convey any further than 15 feet
as Cesa Clean has a high density and may separate
from the mix.
GETTING STARTED
TIMING IS THE KEY TO A RUNNING
COLOR CHANGE
Hand Blend
• Have the purge blend ready to load
• If hopper contains a mixture of resin, color and/
or regrind, it should be run dry or drained before
beginning the color change, keeping the screw
full so press cycle continues
• Run the main resin hopper dry or shut off hopper
to hand feed at the throat
• Once press is clean, slide hopper in place
and proceed with next color-resin blend
• The next color can be added while Cesa Clean is
still in the barrel
• When splay is no longer visible in parts, reset shot
size, parts should be ready to pack
(Single) Volumetric/Gravimetric Metering Unit
at the Throat
• Empty and clean feeder while press continues
to run
• Add Cesa Clean to the feeder color hopper and
calibrate to a 3.0% use rate
• When press is clean, start next color
• When splay is no longer visible in parts, reset shot
• Note: If an open/unused secondary feeder is
installed, use it for the Cesa Clean concentrate
Central Blending Unit
• Thoroughly clean unit while continuing to mold
parts, keeping a resin feed to the press
• Using a clean open hopper or regrind hopper, add
the Cesa Clean concentrate
• Set blender for additive/color to 3.0%
• Once press is clean, drain hopper and/or central
blending unit while continuing to mold parts
• Begin new color and continue to mold parts
• When splay is no longer visible in parts, reset shot
Process Adjustments That Can Help
• Increase back pressure
• Increase screw speed
• Increase injection speed (in some tools maximum
injection speed can facilitate cleaning)
• Reduce mold close time (faster cycle)
• Always remember a stock temperature of 400°F
is essential
When press and tool are clean, return all settings to
standard production process profile.
https://www.avient.com/news/polyone-announces-further-realignment-north-american-assets-acquired-spartech
Further, the company has realigned certain resources associated with Spartech’s legacy Color and Specialty Compounds segment, based on how these resources will now report within PolyOne’s businesses.
https://www.avient.com/sites/default/files/2021-04/gravi-tech-pipe-system-valve-case-study.pdf
However, most brass flapper valves open only
25–30 percent, preventing the pig from passing through.
THE IMPACT
Gravi-Tech high-density formulations enabled API to design
and mold a patented, full-opening flapper valve that is not
only unique in the market, but also offers important cost,
performance and environmental advantages over brass
Design freedom = unique product offering: The
ability to injection mold Gravi-Tech materials instead of
machining brass enabled API to design a cost-effective,
full-opening flapper valve that is 100% pigable
https://www.avient.com/sites/default/files/2022-05/Avient_ALL_Policies_2022_0.pdf
Product Stewardship activities encompassing a life cycle approach,
ensure sustainable management of our products and an open dialogue
with all interested parties.
Promote openness and two-way communication with key stakeholders
regarding environmental, health and safety measures and risks associated
with use, storage, transportation and disposal of our products.
https://www.avient.com/sites/default/files/2021-05/avient-responsible-care-ehs-s-policies-2021.pdf
Product Stewardship activities encompassing a life cycle approach,
ensure sustainable management of our products and an open dialogue
with all interested parties.
Promote openness and two-way communication with key
stakeholders regarding environmental, health and safety measures
and risks associated with use, storage, transportation and disposal
of our products.