https://www.avient.com/sites/default/files/2021-04/versaflex-hc-bt218-biopharmaceutical-tubing-case-study.pdf
MEDICAL TUBING
EXTRUDER
B I O P H A R M A C E U T I C A L
T U B I N G
• Low leachables & extractables
• Great tensile performance and kink resistance
• Good thermal weldability
• Excellent clarity and medical blue tint
• ISO 10993-4 & 5, USP Class VI & Animal Derivative Free
(ADF)
• Supplied drop-in material replacement to
overcome supply constraints of incumbent TPE
• Offered a lower extractable profile than
comparable materials in the market
• Enabled easy material transition without changes
in tooling or thermal welding machine settings
• Formulated solution with proprietary additives to
provide clarity and prevent yellowing after
sterilization
Versaflex™ HC BT218 Thermoplastic
Elastomer
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/sites/default/files/2025-01/Stethoscope Dispersions Case Study Snapshot.pdf
MEDICAL DEVICE
MANUFACTURER
S T E T H O S C O P E S
• Provide a silicone paste colorant dispersion for liquid silicone
rubber (LSR) to use in stethoscope ear tips
• Create a custom-colored vinyl plastisol formulation for
stethoscope tubing
• Harmonize color across materials to meet specific process
and performance requirements
• Deliver effective communication and cross-functional
collaboration
• Offered dependable silicone paste colorants
that allowed for comfort and easy sterilization
• Provided a colored vinyl plastisol to reduce
tackiness and support product longevity
• Collaborated internally to align all materials and
provide color consistency across components
• Supported fast color changes and met quality
specifications through constant communication
and technical expertise
Silcopas Silicone Paste Colorants and
CORE Vinyl Plastisols for Healthcare
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/products/vinyl-formulations/vinyl-plastisols-organosols/core-vinyl-plastisols-healthcare
https://www.avient.com/products/polymer-colorants/colorant-dispersions/colorants-liquid-silicone-rubber
Slide 1: Medical device manufacturer
https://www.avient.com/sites/default/files/2025-01/ISO 13485 Shanghai %28ZhangJiang%29%2C China.pdf
240625-2017-AQ-RGC-NA-PS
Initial certification date:
14 September 2017
Valid:
08 February 2025 – 07 February 2028
This is to certify that the management system of
PolyOne-Shanghai, China
88 Guoshoujing Road, Z.J.Hi-Tech Park, Pudong Shanghai, China (Unicode:
91310000607342402D)
has been found to conform to the Quality Management System standard:
ISO 13485:2016
This certificate is valid for the following scope:
Design, Manufacture, Sales and Distribution of Medical Colour and Additive Concentrates
Used for the Plastic Parts of Medical Devices
http://www.dnv.com
https://www.avient.com/sites/default/files/2022-12/Mevopur Healthcare Colorants and Formulations_Functional Additives for IVD Devices Bulletin.pdf
Fast, accurate and reliable results
aid medical professionals to understand the
illness and develop the strategy for an effective
treatment.
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.
https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-design-guide-.pdf
FOUR MAIN PLASTIC VARIABLES
Flow Rate
Plastics are a non-Newtonian fluid, therefore,
with a higher shear rate, the viscosity of the
material is reduced.
This will
FIGURE 43 - Non-Newtonian Fluid Flow
Low Level of Orientation Frozen Layer
Highly Oriented Laminates Gate
Transducer A
Transducer B
Hydraulic x 10
Filling Hold Start of
mold shrinkage
Time
Pack
P
ss
A
B
FIGURE 45 - Non-Newtonian fluid flow
Relative Viscosity = Transfer Position * Fill Time
Shear Rate = 1
Fill time
FIGURE 46 - Pressure vs.
Reduce the clamp tonnage until flash is seen
around the parting line, then increase the
clamp tonnage by 5-10%
Minimize Cycle Time
• Mold Open/Close – Should be as fast as
possible, without slamming, and still
produce a nice fluid motion
• Ejector Speed – As fast as possible, without
influencing part quality
• Ejector Stroke – Only stroke the ejectors as
many times as needed to separate the part
from the core
- i.e.
https://www.avient.com/sites/default/files/2021-06/chemical-resistance-technical-bulletin.pdf
MEDICAL DEVICE DISINFECTION—HOW TO PREVENT
CRACKING AND CRAZING
Understanding polymer performance is key to minimizing
disinfectant-related failures
DISINFECTANT-RELATED DAMAGE
ON POLYMER HOUSINGS
Strong chemicals used to reduce hospital-
acquired infections can damage equipment
and result in material failures, such as:
• Stress cracking
• Crazing
• Discoloration
CHEMICAL RESISTANCE REQUIREMENTS
VARY BY ENVIRONMENT
• Patient/exam rooms
• Operating and radiology rooms
• Reception areas
• Home (patient equipment & devices)
Healthcare devices must perform flawlessly in a myriad of challenging environments and engineers must
be certain their devices can withstand increasingly potent disinfectants, which have begun to outstrip
the performance of traditional polymers.
Additionally, the wide variability of environments that medical
devices might see, which can range from home to hospital, mean devices must be able to withstand varying
disinfectant strengths, exposure levels and frequencies.
Whether you are designing for a medical device housing or a surgical device in the operating room, we offer
solutions to meet a wide variety of performance specifications and application needs.
https://www.avient.com/sites/default/files/2022-12/Mevopur Healthcare Colorants and Formulations for Needle Hubs Application Bulletin.pdf
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.
https://www.avient.com/sites/default/files/2022-12/Mevopur Colors for Ophthalmic Closures Application Bulletin_A4.pdf
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.
https://www.avient.com/sites/default/files/2022-12/Mevopur Healthcare Functional Additives Pharma Pkg Application Bulletin.pdf
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.
https://www.avient.com/sites/default/files/2023-09/SEM Services Capabilities Overview Brochure.pdf
gate location,
fill/pack/warp/cool) & material solution
• Evaluates component design viability with
preferred Avient material solution
• Fiber analysis determines fiber orientation
and length
• Predicts part quality and manufacturability
(shrink, warp, weld line location)
FILLING PART QUALITYFIBER ORIENTATION
Finite Element Analysis (FEA)
• Virtually simulates how an application will perform in real-world conditions with a high
level of precision
• Able to represent a variety of problems, test methods, models and outputs to evaluate the design,
process and material combination for validation or optimization
• Dynamic
- Acceleration
- Impact
- Break/no break
- Transmitted force
- Energy absorption
• Thermal Mechanical
- Temperature Computational Fluid Dynamics (CFD)
- Heat path
- Dominant heat transfer
- Temperature mapping
- Coupling with mechanical simulations
FEA Simulation Capabilities
• Static
- Displacement/rotations
- Stress and strains
- Contact pressure
- Reaction forces/moments
- Factors of safety
• Vibration
- Eigen frequencies
- Harmonic response
○ Harmonic
displacement,
acceleration and stress
Software Used
• Autodesk Moldflow
• Digimat
• Simulia/Abaqus
• MSC Cradle
• CAD/CAE
- MSC Apex
- SolidWorks
Failure Mode Effect Analysis (FMEA) Support
By leveraging mold filling simulation,
multiphysics simulation, and the understanding
of the link between design, process and material,
we can help inform your decision-making
process for product development.