- PET
bottles recycling.
-
-
- Pet
bottles recycling is what everybody wants to go
in.
- Fine
-
- Before
doing this you should consider what follows:
-
- Your
source of scraps
- If
bottles are already sorted by colour
- If
bottles are PVC free (this never happens)
- If
scrap bottles contain more than 10% of ex edible
oil bottles
- If
PET bottles have PVC or PS labels
- If
bales of scraps can contain also PS trays (very
common) aluminum cans, cloth, stones etc.
-
- According
with what you have, you better think to sorting
first that is the most difficult part of the system,
together with water treatment.
-
- This
means that bottles going to granulator, MUST be
only PET bottles, with all the dirt you want, don't
matter much, but absolutely 100% PET (99,999 is
not enough !)
-
- Sorting
comes to be also the most expensive part of the
system if you want to go with automatic sorting
devices and, if you live in a country where man
power is cheap, it will be expensive as well because
you'll need lots of people to get the job done the
proper way.
-
- When
it goes to washing, we did engineer some special
machinery for this particular purpose we are very
proud of, to give you the lower cost ratio between
energy and throughput.
-
- As
for starting, we do not use any steam, or heaters
to make water hot but we do use hot water, that's
actually the only way to get the glue removed.
-
- Water
circuit is another big issue; if properly done,
water consumption will be low.
- Water
should go backwards, meaning fresh water used
for rinsing should be used in all steps of the process
till it collects all dirt before going to a set
of mechanical filters first and to water treatment
last .
-
- Few
words about Bottle to Bottle systems.
-
- As
you may know, to get the FDA approval, not only
washing is required; you should go a couple of steps
further meaning Pelletizing and Solid State Polycondensation.
-
- And
here the matter gets highly technical.
-
- We'll
not go in details with this but only tell you that
the matter is pretty complicated and requires a
deep knoweledge of mechanical, chemical and plastic
processing.
-
- And
people that's already in the PET bottles recycling
business know what we are talking about.
-
-
