Digital BW, The Print

Are they vaporous in any way, with possible effects on traditional
photographic or inkjet prints?

On Sun, Jul 24, 2011 at 3:14 PM, Ernst Dinkla <edinkla@...>wrote:

> **
>
>
> On 07/24/2011 07:16 PM, Lew Schwartz wrote:
> > Can anyone explain the difference?
> >
>
> The lowest quality acrylic sheets are made in an extrusion process from
> molten acrylic pellets and will show stria in the sheet, less even
> surfaces, etc if compared to cast acrylic sheets. The last produced as
> in mold (between glass) polymerised acrylic that is considered the best
> optical quality plastic available. Styrene transparent sheets are always
> produced as an extrusion directly from molten styrene pellets.With
> polystyrene the optical effects are worse and its surface will scratch
> faster. Polystyrene will yellow in time and usually its optical quality
> is also reduced if it has to have more impact strength by adding other
> components. For example the ABS qualities. There are copolymeres of
> styrene and acrylic but they still do not deliver the quality of cast PMMA.
>
> --
> Met vriendelijke groeten, Ernst
>
> Try: http://tech.groups.yahoo.com/group/Wide_Inkjet_Printers/
>
> | Dinkla Grafische Techniek |
> | www.pigment-print.com |
> | ( unvollendet ) |
>
>  
>


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