https://www.avient.com/sites/default/files/2022-12/Mevopur Colors for Ophthalmic Closures Application Bulletin_A4.pdf
Processing conditions can cause material properties to shift from the values stated in the information.
It is the responsibility of the medical device manufacturer and the person placing the medical device on the market to ensure compliance of the medical device with all applicable laws and regulations, including
the suitability of all raw materials and components used for its manufacture.
Please be aware that there are certain applications Avient’s Mevopur products have not been designed for, nor are they promoted or intended for use in: including, but not limited to long-term or permanent
implants, birth control devices, or plastic surgery.
https://www.avient.com/products/polymer-colorants/high-temperature-color-concentrates
Injection Molding: Part Design
Injection Molding: Mold Design
Protective Materials
https://www.avient.com/sites/default/files/2024-03/QF-02 QMS Global Standard Response.PDF
Our systems have been designed to comply with applicable laws and
regulations and offer robust programs for supporting our quality and corporate
responsibility initiatives.
Material management
Raw materials used in Avient healthcare applications
must fulfill a minimum set of requirements.
These
standards are designed to mitigate potential health
risks related to food products and or nutraceutical
products from their packaging and/or any other
material that may come into direct contact with it.
https://www.avient.com/sites/default/files/2020-09/surround-processing-guide-2020.pdf
These materials utilize long fiber
technology and exhibit enhanced shielding effectiveness versus standard short fiber conductive polymers.
TEMPERATURE
Material
Rear
°F (°C)
Center
°F (°C)
Front
°F (°C)
Nozzle
°F (°C)
Melt
°F (°C)
Mold
°F (°C)
Nylon 6,6
14% NiCF
540–570
(280–300)
530–560
(275–290)
530–560
(275–290)
540–570
(280–300)
540–570
(280–300)
200–300
(90–150)
Nylon 6,6
30% SS
540–570
(280–300)
530–560
(275–290)
530–560
(275–290)
540–570
(280–300)
540–570
(280–300)
200–300
(90–150)
PBT
14% NiCF
510–410
(265–280)
490–540
(255–280)
480–530
(250–275)
480–530
(250–275)
480–530
(250–275)
150–250
(65–120)
PC
14% NiCF
540–570
(280–300)
540–570
(280–300)
530–560
(275–290)
530–560
(275–290)
530–560
(275–290)
150–250
(65–120)
ABS
14% NiCF
470–520
(240–270)
460–520
(240–270)
460–520
(240–270)
460–530
(240–275)
460–530
(240–275)
100–200
(40–90)
PP
14% NiCF
440–480
(225–250)
440–480
(225–250)
430–470
(220–245)
420–460
(215–240)
420–460
(215–240)
125–175
(50–80)
DRYING
Material
Temperature
°F (°C)
Time
Minimum
Moisture
Maximum
Moisture
Nylon 6,6
14% NiCF
180 (80) 4–5 hours 0.05% 0.20%
Nylon 6,6
30% SS
180 (80) 4–5 hours 0.05% 0.20%
PBT
14% NiCF
250 (120) 6-8 hours 0.02% 0.03%
PC
14% NiCF
250 (120) 3–4 hours 0.02% 0.02%
ABS
14% NiCF
200 (90) 2–4 hours 0.05% 0.10%
PP
14% NiCF
180 (80) 2–4 hours 0.20% 0.30%
Equipment
• Feed throats smaller than 2.5" may cause bridging due to pellet size
- Larger feed throats will be more advantageous with long fiber EMI shielding resins
• General purpose metering screw is recommended
- Mixing/barrier screws are not recommended
• L/D ratio
- 18:1–20:1 (40% feed, 40% transition, 20% metering)
• Low compression ratio
- 2:1–3:1
• Deep flights recommended
- Metering zone 3.5 mm
- Feed zone 7.5 mm
• Check ring
- Three-piece, free-flowing check ring
• General purpose nozzle (large nozzle tips are recommended)
- Minimum orifice diameter of 7/32"
- Tapered nozzles are not recommended for long fiber EMI shielding resins
• Clamp tonnage:
- 2.5–5 tons/in2
Gates
• Large, free-flow gating recommended
- 0.25" x 0.125" land length
- 0.5" gate depth
Runners
• Full round gate design
• No sharp corners
• Minimum of 0.25" diameter
• Hot runners can be used
PROCESSING
Screw Speed Slower screw speeds are recommended to protect fiber length
Back Pressure Lower back pressure is recommended to protect fiber length
Pack Pressure 60–80% of max injection pressure
Hold Pressure 40–60% of max injection pressure
Cool Time 10–30 seconds (depends on part geometry and dimensional stability)
PROCESS CONSIDERATIONS
Recommended – retain fiber length (maximize conductivity)
• Low shear process
• Low screw speed and screw RPM
• Slow Injection speed
• Fill to 99–100% on first stage of injection
- Reduces potential nesting of fibers at gate location
- Improves mechanical performance near gate location
- Promotes ideal fiber orientation
Resin Rich Surface
• Achieved when using a hot mold temperature and longer cure times
≥ Max mold temperature recommendation
• Improved surface aesthetic
• Reduced surface conductivity
• Could reduce attenuation performance in an assembly
Fiber Rich Surface
• Achieved when using a cold mold temperature and shorter cure times
≤ Minimum mold temperature recommendation
• Improved surface aesthetic
• Reduced surface conductivity
• Could improve attenuation performance in an assembly
www.avient.com
Copyright © 2020, Avient Corporation.
Processing conditions can cause material properties to shift from the values stated in the information.
https://www.avient.com/sites/default/files/2024-06/CM Europe Ltd Modern_Slavery_Statement - 2024 V4.pdf
Avient and its global direct and indirect subsidiaries and affiliates, including ColorMatrix (“Avient”), are intermediate suppliers of
specialty polymers and related raw materials designed to meet the specifications of its manufacturing customers.
In sourcing its own raw materials and in distributing products
manufactured by others, Avient is required to meet the specifications prescribed by its customers.
Our total raw material and
packaging spend for 2023 was ~$21 Million.
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.
Processing conditions can cause material properties to shift from the values stated in the information.
https://www.avient.com/sites/default/files/resources/PolyOne%25202017%2520Proxy%2520Statement.PDF
now Silicor Materials Inc.), a solar silicon
company, from August 2010 to 2011.
Nikrant Senior Vice President, President of Specialty Engineered Materials
Stephen D.
RSUs are designed to promote share ownership and promote the retention of our
executives.
https://www.avient.com/sites/default/files/2020-08/smartbatch-frost-collection-english.pdf
It helps customers broaden their
product portfolio under the same ISBM mold to
differentiate their offerings.SmartBatch Frost
Collection enables packaging customers to develop
a soft, touchable, cool, and icy appearance, and
give more design freedom with a wide range of
color options.
Processing conditions can cause material properties to shift from the values stated in the information.
https://www.avient.com/products/polymer-additives/healthcare-additives
Injection Molding: Part Design
Injection Molding: Mold Design
Protective Materials
https://www.avient.com/sites/default/files/2021-09/avient2020sustainabilityreport-9-2-21.pdf
Through our design expertise and material science, we help our customers reduce material usage,
enable recycle solutions, improve physical performance and reuse potential of recycled materials.
As regulations around vehicle air quality have been accelerating, we have
designed a suite of materials that reduce VOC emissions.
From the
headlight to the taillight, sustainable automotive designs and manufacturing ideas come zooming to life with the right
materials.