[WWI] First report: Clear cigarette paper

[Douglas Anderson]

Knut, you are not a Geo, you are a pseudo-geo :P

   
  
knuterha at eunet.no wrote:
  Hei,

Surprisingly enough, this is something I can answer as a Geo.

Paper can either be made white by bleaching, using Chlorine (dioxide) or
similar reactants.
Disadvantages include weakening the paper, it is bad for the environment
and the paper deteriorates over the years due to continuing chemical
reactions.
Advantage is that you can get the paper to be really white

The other way which is in common use today is by mixing in finely ground
chalk or China clay of high quality.
Advantages are that it does not weaken the paper, makes it more chemically
stable and is cheap - paper is usually sold by weight and chalk often
makes up 25-50% of the weight when the paper leaves the factory.
High quality chalk for use in the paper industry in Europe is produced by
Hustadmarmor in Norway and exported as a slurry (more than three million
tons each year. The industry does leave a hole in the ground, but is much
kinder to the environment than clorine and other chemicals used for
bleaching.
Disadvantage is that it does not get as white as the bleached paper.


Eders
Knut Erik

> Here's what I've learned so far:
> The package says this stuff is clear because the paper hasn't gone through
> the chemical process that is normally used to turn the paper white. Now I
> admit I don't really know jack chit about paper making in general and even
> less about making rolling papers. But I would have bet a nickle that any
> whitening process that paper goes through would be a bleaching process, to
> remove undesireable(?) color. Anyone qualified to educate me(us) on
> matters of paper manufacture?




       
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