MoparFins

Techical Discussions => UPHOLSERY HOW TOO's => Topic started by: firedome on April 20, 2011, 03:45:07 PM

Title: Plastic softener/conditioner
Post by: firedome on April 20, 2011, 03:45:07 PM
So is there a good treatment you can put on plastic like on armrests,
dashboard pads, etc that will re-store the plasticizers to soften them
up again and restore their suppleness to keep them from cracking? I'm
not talking ArmorAll here... there must be something that actually
works to restore the softness of the plastic....hopefully...  

Title: Plastic softener/conditioner
Post by: Steve on April 20, 2011, 03:47:09 PM


That reminds me.  I have to look up that dash pad for you.  I saw the box yesterday. . . .
Title: Plastic softener/conditioner
Post by: firedome on April 20, 2011, 03:50:08 PM
I found out my perfect armrests on the sedan wlll fit on the vert, but I'd like to keep them from cracking. Ya I can use that pad! Need to keep it from cracking too.



Title: Plastic softener/conditioner
Post by: Steve on April 20, 2011, 07:03:10 PM


Getting closer. . .  If it ever warms up or stops raining, which ever comes first
Title: Plastic softener/conditioner
Post by: firedome on April 21, 2011, 07:03:33 AM
So anyone know a treatment that will keep the dash or armrest plastic soft??





Title: Plastic softener/conditioner
Post by: Steve on April 21, 2011, 08:27:48 AM
Send a PM to Bob and have him respond.  Just send him the link.
Title: Plastic softener/conditioner
Post by: Stitcherbob on April 22, 2011, 02:03:40 PM
nope, once the plastic dries out it's done......Armor all and others will swell the surface, revealing hundreds of cracks that weren't visible before.

Title: Plastic softener/conditioner
Post by: firedome on April 23, 2011, 03:48:32 AM

A guy has a completely uncracked perfect original dash pad for sale for
$500 (!!) but as it's 40 years old and not new, my concern is that you
could put it in and it'd still go and crack shortly... When new they
had chemicals like pthalates in them that are plasticizers ie: that
make the thin plastic cover soft and flexible, but over the years the
plasticizers outgas then the cover gets baked in the sun making it
brittle. It seems to me there'd be some kind of  organic solvent
or plasticizer that could be absorbed and soften it up somewhat without
making it sticky. I've never liked or used Armor All... wish I knew a plastics chemist...  the
alternative is Just Dashes at over $1000 a pop!! Or live with the
cracks.   It's all these plastics that makes '60s and later cars
so hard and expensive to restore...
firedome2011-04-23 08:50:59
Title: Plastic softener/conditioner
Post by: Steve on April 23, 2011, 08:11:37 AM


One of the keys is not to install it too tight.  Let it move around
Title: Plastic softener/conditioner
Post by: firedome on April 24, 2011, 05:34:18 AM
Makes sense... they seem to crack often on the top near where the
speaker grilles and other openings are.  Oddly the '74 to '78
dashes rarely seem to crack. Must be a design difference.