Validity Avient Switzerland GmbH Hauptstrasse 30 4127 Birsfelden Switzerland Design and manufacture of colour and additive concentrates and specialty compounds for the Healthcare and Medical device market. Ltd. 30, Hsing Pang Road 33068 Taoyuan Taiwan Design and manufacture of colour and additive concentrates and specialty compounds for the Healthcare and Medical device market. Lewiston, ME, 04240 United States of America Design and manufacture of colour and additive concentrates and specialty compounds for the Healthcare and Medical device market.

These antibacterial and antifungal additives reduce growth of bacteria, mold and fungus on the surface and through the thickness of the plastic part. WithStand antimicrobial additives can be combined with colorants or other functional additives in a single masterbatch or liquid solution to get the exact performance needed. ANTIMICROBIALS FOR PLASTICS Effective in reducing bacterial growth across a range of polymer resins Bacteria does not attach to surface of part molded with WithStand Bacteria attaches to surface of part molded without WithStand Side View Molded with antimicrobial additives Molded without antimicrobial additives

VALVE-GATED TOOLS IN INJECTION MOLDING GUIDELINES CESA CLEAN ADDITIVES ™ KEY FEATURES Cesa™ Clean Additives • Cesa Clean is a concentrated purge product, not a purge compound. • It can be processed through manifolds, valve-gated tools and small sub gates. • Cesa Clean is 100% recyclable with polyolefin resins and compounds. 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. Contact your Avient representative with questions or for additional support. 1.844.4AVIENT www.avient.com Copyright © 2023, Avient Corporation.

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 . DEFECTS Design Guide 33 SOURCES Mold Machine Material Process Mold damages Loss of clamp force Barrel malfunction Contamination Wet material Melt temperature too high Injection speed too high Transfer position too low Excessive pack pressure Excessive back pressure RECOMMENDED ADJUSTMENTS Repair mold damage Clean parting line Reduce pinch-off land Increase clamp force Dry material Reduce melt temperature Reduce mold temperature Reduce injection speed Reduce hold pressure Increase transfer position Flash • Excess material commonly found at parting lines or mold features Root cause: Too much plastic or mold damage . 34 Gravi-Tech SOURCES Mold Machine Material Process Design of gate too small or in wrong location Machine not providing requested velocity Heater overriding Wet material Viscosity too low Injection velocity too high Melt temperature too high Mold too cold RECOMMENDED ADJUSTMENTS Increase gate size Remove sharp corners from gate detail Change gate type Move gate to a position where the melt stream will impinge upon a mold feature Dry material Reduce injection velocity Increase melt temperature Jetting Root cause: Injection speed is too high for the viscosity of the material DEFECTS Design Guide 35 SOURCES Mold Machine Material Process Finish too rough Venting impaired Screw configuration Overworking material Non-compatible additive Melt temperature too high Back pressure too high Injection speed too fast Mold too cold RECOMMENDED ADJUSTMENTS Remove sharp corners from gate detail Insure proper venting Increase gate size Use smaller screw/barrel Check melt uniformity Check L/D ratio Dry material Check additive compatibility Reduce melt temperature Reduce screw speed Reduce back pressure Reduce residence time Reduce injection speed Plate-Out • Build-up or deposit on mold surface Root cause: One component of the material is not totally compatible . 36 Gravi-Tech SOURCES Mold Machine Material Process Venting impaired Shut-off partially turned Screw problems Barrel heater problems New lot Contamination Material too dry Under-packing Injection speed too low Not enough pack pressure Melt temperature too low Transfer position too high RECOMMENDED ADJUSTMENTS Make sure gate is not blocked Insure runner shut-off is not turned Check venting Increase gate size Change gating location Add flow leader Insure cushion position Make sure screw is trans- ferring at a correct position Change screw/barrel Make sure material was dried at proper settings Increase melt temperature Increase mold temperature Increase injection speed Decrease transfer position Short Shot • Not enough material is being injected into the mold to fill out all of the cavities Root cause: Not enough plastic is getting into the cavity . It provides additional mixing to the melt, which is especially helpful when using colorants .

INDUSTRIAL EQUIPMENT OEM P A I N T S P R A Y E R • Meet or exceed UL94 V-2 flame rating • Able to interact with existing bulk chemistry without compromising functionality or brand color and aesthetics • Deliver cost targets while providing operational efficiency and a working capital strategy • Accelerate product development timeline, and provide UL94 testing verification prior to production trials • Achieved all flame rating requirements and assisted with regulatory approvals • Developed a proprietary Smartbatch solution that minimized potential effects from interaction with current bulk chemistries • Provided needed support with qualification process and testing requirements, saving time and cost • Afforded on-going support with A2LA test labs, sampling, and lot-to-lot consistency with exacting performance Smartbatch™ Formulation: Cesa™ Flame Retardant Additives and OnColor™ Colorants KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-additives/performance-enhancement-additives/cesa-flame-retardant-additives

Typically additional products such as surfactants are also added to help stabilize the color formulation. Importantly these advances also now allow color to be combined with additional functional additives without impacting process stability. Some key questions to consider when implementing liquid color: • Is your colorant addition negatively impacting or enhancing your process efficiency?

Typically additional products such as surfactants are also added to help stabilize the color formulation. Importantly these advances also now allow color to be combined with additional functional additives without impacting process stability. Some key questions to consider when implementing liquid color: • Is your colorant addition negatively impacting or enhancing your process efficiency?

G E N O M I C D I AG N O S T I C D E V I C E M A N U FAC T U R E R I N - V I T R O D I A G N O S T I C ( I V D ) D E V I C E MEVOPURTM Laser-Transmitting and Laser-Absorbing Pre-color Solution AV I E N T S O L U T I O N • Customized solutions - Quality-by-Design (QdB) approach • Optimized pigment / additive selection – good distribution in final part minimizes welding failure • Mitigated contamination and extractable risk on incoming raw material with control based on fingerprinting • Ensured uninterrupted supply from multiple ISO13485-2016 certified sites • Minimized risk of change with change control agreements W H Y AV I E N T K E Y R E Q U I R E M E N T S P R O D U C T I V I T Y & Q U A L I T Y • Good weldability, low rejection rate • Solutions in wide range of polymers, colors and transparency • Pre-tested ingredients to biocompatibility and extractable metals L E A R N M O R E https://www.avient.com/products/polymer-additives/performance-enhancement-additives/mevopur-functional-additives

CESA™ Light additives can protect the resin in multiple ways. CESA Light additives are available utilizing either of these two methods or with a synergistic blend of both. Many CESA Light products include CESA Nox additives, which also aids in polymer protection. 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation.

Once connected, the CMG controller tracks the input signal from the host machine and allows the FlexCart to accurately meter the required color or additive for the process. What is the normal liquid addition rate? The packaging is designed to effectively contain and transport Avient liquid colors and additives.