04/27/2026
🔵When forming catheter tips using PVC, success really comes down to getting the heat and material flow right.
In this project, we worked on a 21FR PVC bullet nose catheter and ran into a couple of challenges early on. The material was sticking to the die, and the tip shapes were inconsistent.
Using our Dual Air Tipper, we made a few key adjustments. We applied mold release to prevent sticking, positioned the coil to only heat the start of the taper and slight overinserted the tube to ensure enough material filled both the outer shape and the inside of the tip.
As a result, 99% of the 60 tested samples met requirements, with fully formed tips and no bubbles or voids.
It’s a good reminder that when working with PVC, small process tweaks can have a big impact on consistency and quality.
Read the full article here 🔗 https://www.onexrf.com/blog/how-we-formed-it-forming-pvc-bullet-nose-tips