Sintra and other material???

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tnframer408

tnframer408

SGF, Supreme Grumble Framer
Joined
Dec 11, 2001
Posts
1,506
Loc
Knoxville TN
We're working on several large original vintage posters, 50 x 35 and 40 x 50. Linen backed with a heavy linen.

Want to use something other than Baibridge acid free rag covered foam or 8-ply rag and thinking of one of the inert plastic/polymers Jim Miller has raved about.

Coroflex? Sintra? need to be totally archival, naturally.

Help would be appreciated
 
Michael,

Coroflex is a stainless steel coronary stent material. I don't think that would work.

Originally posted by preservator:
Framerguy has pointed out why Sintra is not to be used in preservation framing, since it is
made from PVC, polyvinyl chloride, and it will
give off chlorine. It is fine for use as plumbing
pipe that will have chlorinated water flowing
through it, but chlorine is very chemically active
and should not be allowed to escape into a frame
that contains valued items.

Hugh
Click to expand...
Coroplast, behind a layer of 4-ply rag, might be a good combination. Preferably, the Coroplast should be without UV inhibitors, anti-oxidants or paints or pigments.
 
Michael,
Check out the 4,6, and 8mm thick archival fluted polypropylene backers at www.smallcorp.com .
They also have some honeycomb polypropylene boards, but I don't think they are on the website yet. You'll need to call.
 
Michael,

I don't think I'd use Sintra even WITH a rag backing if your posters are valuable. I have used and stored Sintra and, as Hugh pointed out, it outgasses. Badly. I could smell the chemical (although it didn't smell like traditional chlorine) in my work shop when I got in 4 4x8 sheets and left them sit in the back area over the weekend. If it outgasses so that you can smell it, I would guess that it will outgas inside the frame package, rag backing or not.

There are other stiff backing boards available that won't outgas. I will post some tomorrow when I go to the shop. The graphics company I dealt with in St. Louis carried just about every rigid and foam board on the market and I have descriptions of all of them in one of my files.

Framerguy

P.S. You may want to check out this older thread about some of the alternatives to Sintra. I posted those that have rigid Polystyrene and aluminum facings. There are also some comments from Hugh to confirm the use of these boards.
 
That's what I get for posting so early in the morning.

Meant "coroplast". Anyway, may just opt for a coupla sheets of 8-ply rag and fuggedaboudit
 
Hey Michael,

All that really well researched handy advice on which boards to use on those posters, ................... well, just don't pay any attention to that stuff, OK??


Coroplast comes in 2 flavors - "archival" and <strike>chocolate</strike> regular.

(Ron, Rebecca, Wally, and I could have come up with that&nbsp one in about 30 seconds!) :D

FGII

P.S. Don't use Coroplast without mounting the posters on a rag backing. You'll get these little ridges all across your posters. (Just thought I'd throw that one in there for ya.)
 
framerguy:

That's why I posted the fact that they're on very heavy linen. I don't think the ridges will show.

But--alrealdy decided to go the archival 8-ply route, plus he has many more to frame.

So we do it correctly, tell him so and voila---more high end artwork
 
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