SilcoTek® is helping customers in the plastics molding industry solve Mold sticking and corrosion problems. The result? Longer mold life and better product quality.
Improving Plastic Mold Quality
Anti fouling coatings, like Dursan, are chemically inert but they also have unique qualities that benefit plastic mold production, packaging and plastic medical IVD products. In this blog post we'll discuss how precision mold production can benefit from CVD silicon-based coatings.
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Benefits of Dursan® in Plastic Molding Applications
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Protecting stainless steel from corrosive attack.
The Dursan® coating prevents corrosion by a factor of 8x or more by preventing interaction of corrosive solvents or process materials with Stainless Steel. The surface exceeds typical metal passivation capability and inertness by orders of magnitude while maintaining precision tolerances. Immersion testing in 6M HCl shows that Dursan coated surfaces prevent surface attack by orders of magnitude compared to passivated stainless steel.
Dursan improves the corrosion and wear performance of many materials including:
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Learn how coating thickness changes corrosion resistance and how a thin coating can have surprising corrosion resistance.
Wear resistance
CVD coatings are thin but are they wear resistant? We tested Dursan vs. uncoated stainless steel in a comparative pin-on-disk wear test. We found Dursan was more wear resistant than stainless steel and had higher surface lubricity, making the wear resistant coating ideal for extrusion components, plastic molds, valve components, and other wear prone surfaces.
Performance Case Studies
Testing proves that a silicon CVD coating, like Dursan, can improve plastic mold durability and improve the removal of the plastic part from the mold without the use of chemical agents that can contaminate the product. For example, a Dursan coated Stainless Steel mold was subjected to daily injection molded operations for (4) months and cleaned every (2) days with an aggressive mold cleaner. When the molds were returned to SilcoTek® for analysis, the coating showed no signs of wear or degradation.
Improved packaging for health care products
In another test, a packaging application for health care products improved the corrosion resistance of their plastic extrusion process by coating components with Dursan. After (5) months of use there were no signs of corrosion with any of these coated parts. The previously used nickel-coated SS parts experienced severe corrosion after (3) weeks of use. The customer was able to significantly extend the life of the plastic mold components, saving close to $50,000 USD per year with the use of our coating and the customer found significantly less product contamination. Get our Medical Application Brief to learn more.
Want to learn how SilcoTek improves the performance of products and processes in your industry? Read our case studies.
Plastic Molding Applications Using Dursan®
Plastic Materials
SilcoTek’s Dursan coating has shown excellent release properties with:
• Polyethylene Terephthalate (PET)
• Polyurethane (PU)
• Polypropylene (PP)
• Pebax
• Nylon
Mold Substrates
Dursan® can be successfully coated onto metals such as stainless steel, carbon based steel, and tool steel alloys.
Molded Product Applications
Contact us to discuss your molded product application. Current applications of Dursan coated molds include:
• Medical Devices
• Medical Testing
• Food and Beverage Containers
• Consumer and Industrial Products
Have a question about how SilcoTek® can improve your precision plastic mold operations? Contact our Technical Service Team to speak with our experts or follow us on LinkedIn.
