[Shop-talk] removing mylar coating from door

[Ron Horwitz]

--- On Mon, 6/21/10, Pat Horne <pat at hornesystemstx.com> wrote:

> From: Pat Horne <pat at hornesystemstx.com>
> 
> Most of that kind of protective film is held on by static
> charge, so I 
> wouldn't expect any adhesive to be present. 

Not exactly true.  For modern electronics, yes.  In the past for electronics, and still current for industrial and transportation applications, there is a cross-linked adhesive, typically acrylic, used.  Adhesive starts out as a low tack removable, and the cross-linking helps to keep the adhesive on the protective film and prevent transfer to the protected good.

Over time the two surfaces become more intimate, and the adhesive builds in strength.  Therefore, the longer it's there, the harder it is to remove.  My guess is that the cross-linking also boosted the chemical resistance, hence the reduced effect of solvent now.

Heat to soften and letting solvent soak on the surface for a while are the best chances.  Maybe a light sanding?


Ron