Re: PP meshes

I Know PP meshes used in Oil Filtering they use 1m X 1m meshes very
critical design and manufacturing, they need to have flexibility as
well as should resist the high loadings.

Uncle Al wrote:
> borzage@xxxxxxxxx wrote:
> >
> > i was wondering what the way of making a polypropylene mesh (as for a
> > hernia repair) is. i would imagine isotactic polypropylene would be
> > made, then switched to atactic. then i would take the bulk material
> > and apply forces such that the segements between the crysatals became
> > less slack. is this a (the?) way of making it?
> >
> > Would it be possible to use the vapor-phase hydrogen peroxide (VPHP)
> > method to sterilize the polymer mesh? or is there an alternate way
> > that does less damage to the polymer?
> >
> > Thank you for your advice
>
> PP mesh is a commercial product, in huge rolls with many mesh spacings
> available. You can also get sintered porous materials and non-woven
> fibrous stuff. Do you have a problem with ETO sterilization? PP
> won't like steam, gamma, or e-beam.
>
> http://www.uspto.gov/
>
> Look it up. Also Gore-Tex kinds of mechanically-pored materials.
>
> --
> Uncle Al
> http://www.mazepath.com/uncleal/
> (Toxic URL! Unsafe for children and most mammals)
> http://www.mazepath.com/uncleal/qz.pdf

.

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