[pure-silver] Re: D-76 and variations

On Tuesday 29 November 2005 14:16, DarkroomMagic wrote:
> As a side note:
>
> Some PET bottles are not straight PET. Coca Cola for example is using
> plastic bottles made from a co-extrusion or co-injection process, which
> contain up to 7 layers of different polymers, aiming to stop gas
> permeability and maintain the 'fizz' over a long time. The tiny bottles are
> later heated and blow-molded into their final shape.
>
> However, I don't know how resistant Coke bottles are to darkroom chemicals
> compared to the typically used polyethylene bottles.
>
> If I remember correctly, Coca Cola had a patent for this process, and it is
> now used to mold automotive plastic fuel tanks.


        I got to say this is kind of scary. Do we really need coke that lasts 
for 
twenty years in the bottle?

        Nick
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