Summary for polyolefin thermoplastic elastomer coating removal Discussion
Polyolefin thermoplastic elastomer coating removal is the core issue here: Najeeb Haddad asked how to strip a peeling two-part clear paint from extruded PTE tubing without damaging the 1.5 mm thick substrate. The coating was described as a fluorine copolymer base resin with an isocyanate curing agent, about 100 micrometers thick, and the goal was to remove it so the tubing could be recoated properly. The only answer in the thread came from Guillermo Marrufo, who suggested sand blasting as a possible method, with the caution that it might remove the coating without distorting the base plastic. No other methods, solvents, or process details were provided, so the discussion remains a brief suggestion rather than a proven procedure. The practical takeaway is that any stripping method must be tested carefully to avoid harming the PTE tubing.
Q. I need to remove a two-part paint that is coated onto a Polyolefin Thermoplastic Elastomer (PTE) [PTE is composed of a hard segment of polyolefin and a soft segment of olefin rubber]. The PTE is extruded into a tube (1.5 mm thick) and has this two-part paint coated on the surface (about 100 micrometers thick).
The two-part paint coating is composed of a base resin formed of a fluorine coating copolymer and a curing agent formed of isocynate (it is a clear coating).
The coating on the tubes I have is peeling. I need to essential strip this coating from the surface of the PTE tubing so that I can re-coat the tubing properly. But is essential that in the process of removing the coating, I do not deteriorate the PTE tubing.
So if anyone can provide a solution or maybe point me in the right direction as to how I can accomplish this- it would be appreciated.
Najeeb Haddad
– Plymouth, Michigan, USA
April 4, 2012
A. Perhaps sand blasting can do it without distorting the base plastic. G. Marrufo-Mexico
Guillermo Marrufo
Monterrey, NL, Mexico
April 15, 2012