What Medical Device Component Manufacturers Need from an Injection Molding Partner

Once a process is validated and documented in a regulatory file, finding a new medical device component manufacturer can mean months of requalification and significant expense.

Selecting a molder based solely on unit price often leads to downstream problems that might not surface until years down the line. That’s why it’s more prudent to evaluate capacity and quality control alongside cost.

Below, Westec Plastics Corporation outlines key qualifications medical device component manufacturers should look for in molding partners. Speak with our team today to learn how our molding capabilities and extensive medical injection molding experience align with these criteria.

Material Expertise Rooted in Real Processing Experience

Manufacturing medical plastic components requires unique resin considerations as devices often need to withstand repeated sterilization involving harsh chemical disinfectants. Datasheets are a helpful starting point, but processing conditions such as moisture content and melting temperature strongly influence how a polymer performs in the field.

Experienced medical device component manufacturers should look for a molder that understands these interactions and offers guidance on how a candidate material will respond to the specific sterilization method the device will undergo.

Repeatable Tolerances Through Disciplined Process Control

Meeting a tolerance on the first run does not guarantee consistent results across hundreds of cycles. Medical device component manufacturers need a molding partner like Westec that uses scientific molding practices to establish documented, data-driven processing windows to help identify drift before a nonconforming part is produced. This predictability improves assembly yields and reduces the risk of an out-of-tolerance device reaching the field.

A Clear Paper Trail for Every Molded Part

When a discrepancy about a part arises, medical device component manufactures need answers quickly. Which resin lot was used? Which press and mold produced the part?

A reliable injection molding company should be able to answer these questions with detailed documentation. Lot control and clear change records prevent ambiguity that can complicate audits.

Validation Support

Medical device component manufacturers operate under stringent quality and compliance requirements and need molding suppliers that support those requirements. Westec Plastics is ISO 13485:2016 certified and supports process validation through first article inspection and Gage R&R studies. We measure critical dimensions using a Micro-Vu CMM and a Keyence instant measurement system.

Clean Room Capabilities

Cleanliness is nonnegotiable with medical injection molding. Medical device components manufacturers should confirm that a molder’s clean room capabilities align with their application.

At Westec Plastics Corporation, our hard wall ISO Class 8 clean room has six injection molding machines, while our ISO Class 6 and ISO Class 7 rooms are used for secondary operations and assembly. When a program allows it, we run assembly in line with molding to limit handling, which reduces the risk of contamination.

See Why Medical Device Component Manufacturers Partner with Westec

With so much at stake, it can be difficult for medical device component manufacturers to find a reliable injection molding partner. Price is an important consideration, but it should be evaluated alongside other important factors like if a supplier offers DFM support, material guidance, disciplined process control, record keeping, and clean room injection molding.

If your team is preparing a new medical plastic component for production, reach out to Westec Plastics Corporation to discuss your program requirements.