Digital BW, The Print

Hi Ernst,

> -----Original Message-----
> From: Ernst Dinkla [mailto:E.Dinkla@...] 
> Sent: Wednesday, August 27, 2003 11:52 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Re: Septone system (LONG)
> 
> 
> 
> ----- Original Message ----- 
> From: "Loris Medici" <lorism@...>
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Sent: Wednesday, August 27, 2003 8:25 AM
> Subject: RE: [Digital BW] Re: Septone system (LONG)
> 
> > I think most of the modern inkjet and water color papers are
> sized using
> > a synthetic material named "Aquapel", not gelatine (even if
> they use the
> > term "gelatine sized").
> >
> > Regards,
> > Loris.
> 
> 
> Loris, that is a water repellent, if used it will be just 
> part of the total size. It is used for the same reason in 
> concrete. Instead of gelatine most papers are sized with PVA 
> nowaday, it is a synthetic gelatine that can have different 
> grades of hydrolisation that translate to different grades of 
> hygroscopy when dry.
> ...

Thanks for the useful information you've provided... But I have to
insist that aquapel alone also can be used to size paper.
Serious/important watercolor paper manufacturers such as Fabriano and
Whatman claim their papers are sized using aquapel and also see the
"description and use" section of this document:
http://www.herc.com/indspec/Data_Sheets/Aquapel%20752-1.pdf

Best regards,
Loris.