Re: Miracle size for gum
Well, whenI wrote that, I thought that there was a distinct
separation between polyvinyl acetate and polyvinyl alcohol and that
one was soluble in water and the other was not. Now I understand
that this is not an either/or proposition; it's more complicated than
that and the different variations of PVA rest more on a continuum
than existing as two entirely different substances.
On Oct 10, 2009, at 5:36 AM, phritz phantom wrote:
does it really say "pv alcohol" on the bottle, not "pv acetate"?
i found the data sheet on the gamlin site yesterday and there it says:
"Product: Poly Vinyl Acetate (PVA) Glue
Chemical name: Ethylene/Vinyl Acetate Copolymer"
what i've learnt on the substances so far (i think mostly from a
post from katharine thayer on apug), is that pv-alcohol is
basically a simple glue and not waterproof and pv-acetat is
insoluble in water and the better size.
Marek Matusz schrieb:
A note on the bottle says "post plasticezed neutral pH ply vinyl
perhaps one can mix a PVA solution from polyvinylalcohol that can
be bought. I suspect that there are other additives in the Gamblin
product, but they might not be all that relevant to the gum sizing.
I also have to add it is so simple to just take some solution from
the bottle, add water and brush it on paper, no additional
chemicals, no mess.
> Date: Fri, 9 Oct 2009 23:48:02 +0300
> From: firstname.lastname@example.org
> Subject: Re: Miracle size for gum
> To: email@example.com
> Thanks for the report Marek. Unfortunately we don't have Gamblin
> products here in Turkey. Do you have any idea about the formula?
> find PVA but I'm not sure which one to buy and how much to use...
> Not directly related but just wanted to mention: For those who are
> interested in "casein", the miracle sizing is cheap acrylic
> (or 1+5) with water.
> 2009/10/9 Marek Matusz <firstname.lastname@example.org>:
> > All,
> > A few weeks ago there was some discussion on PVA sizing and I
decided to try
> > it for gum.
> > ...
> > The 1:2 turned out to be a miracle!
> > ...
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