Sometimes opaque white plastic bags form a black smokelike smudge.

What is this? Can this develop on coroplast.com's plastic sheets?

I am trying desperately to determine that this is not mold.

It makes no logical sence that this is mold or that mold could form on
this corner of the coroplast and not in other parts of it.


- = -
Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist
http://www.panix.com/~vjp2/vasos.htm http://www.facebook.com/vasjpan2
---{Nothing herein constitutes advice. Everything fully disclaimed.}---
[Homeland Security means private firearms not lazy obstructive guards]
[Urb sprawl confounds terror] [Phooey on GUI: Windows for subprime Bimbos]

wrote in
:


Sometimes opaque white plastic bags form a black smokelike smudge.

What is this? Can this develop on coroplast.com's plastic sheets?

I am trying desperately to determine that this is not mold.

It makes no logical sence that this is mold or that mold could form on
this corner of the coroplast and not in other parts of it.



What is the reasoning that leads you to decide that mold is not "logical"?

Corrugated plastic is usually polypropylene or polyethylene. Neither
naturally has antibiotic characteristics; in the presence of moisture, it
is entirely possible for mold to grow on them.

Make a 5% bleach/water mixture and apply it to the corrugated plastic. If
the black goes away, then it was mold.

--
Tegger

Dear vjp2...:

On Mar 24, 11:03*pm, wrote:
Sometimes opaque white plastic bags form a black
smokelike smudge.

What is this? Can this develop on coroplast.com's
plastic sheets?

Plastic films are prone to developing a static charge. This will
allow them to attract and hold everything from mold spores to soot /
smog.

I am trying desperately to determine that this is not
mold.

I recommend you find out what it is, rather than forcing it to be
something you fear. Swab it and look at it under a microscope. Any
regularity to the "grains", any appearance of biology?

It makes no logical sence that this is mold or that
mold could form on this corner of the coroplast
and not in other parts of it.

It might simply have been exposed to the environment in a different
way. Life rarely "makes sense". Look and see. My penny's worth of
free advice.

David A. Smith

On Mar 24, 11:03*pm, wrote:
It makes no logical sence that this is mold or that mold could form on
this corner of the coroplast and not in other parts of it.

If the sheets are stored in sunlight, they may turn black from
photodegradation, depending on the plastic and the way it was
polymerized.

DB