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Aloha All
As well as running our USDA organically certified commercial aquaponics farm
since 2008, my wife Susanne and I've been designing and building
"high-tech" Chinese-style greenhouses since 2011. A page on our
website describing our mid-size greenhouse is here:
(http://www.friendlyaquaponics.com/farmers-greenhouse/).
We used Asahi Glass Company's "F-Clean" ETFE film in the 100-mil thickness to
cover this greenhouse. It is incredibly durable when installed and tensioned
properly (30+ years); and when not tensioned or installed properly performs
just like "really expensive" poly film, that is, it only lasts a
couple of years.
It is not possible to glue or cement
ETFE together; and the "welding machine" for welding it costs
$100,000 and requires a lot of training to use. Asahi Glass is the only company
in the world that welds ETFE (TBMK), and supplies sheets up to 39 feet wide by
110 feet long. There is (unfortunately) only one North American distributor,
and their price sheet is here: (http://www.friendlyaquaponics.com/docs/ETFE%20Pricing%202014.pdf).
If you have a LARGE order ($20,000 or more) contact Asahi Glass directly; you
will get better service and a better price. It is difficult to buy sheet ETFE
from other manufacturers, or even to get them interested in returning your
emails or calls, because they all want big, $100,000+ orders.
The real benefit of ETFE comes into
play when used as a greenhouse covering at higher latitudes or in other
locations with minimal wintertime sunshine. It passes more light than glass,
while coming in at a fraction of the cost and weight, and is the ONLY cheap way to get around having to
install lights and pay for electricity to keep your crops growing during cloudy
or low-light periods during the winter. ETFE, though “expensive” is far, far
cheaper than buying the lights plus paying the electric bill (forever!).
ETFE is absolutely unnecessary if you are below about 36 degrees latitude in a place that has relatively sunny winters, and you should use standard 6-mil single-layer EV-stabilized greenhouse poly film. This is unless your location also has high winds; in which case it is far cheaper than poly, which has no strength, and which you have to replace after every high-wind event because it shreds and disappears into the wind. We have clients in “Tornado Alley” in Alabama/Tennessee who have greenhouses covered with ETFE that have gone through 5 high-wind events of 70+ miles per hour over a 2-year period, with no damage and no detectible degradation of the ETFE.
Aloha, Tim Mann, trai...@friendlyaquaponics.com
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Dear Paul,
A big thank you for pointing the direction.
However these are ETFE panels, and being used for different purpose i.e, agricultural purpose.
The ETFE we require comes in a film form, having thickness from 15 to 25 microns.
It is specially being used for demoulding process in composite industries.
I am attaching a photograph for your kind consideration.
Please let me know if you come across the same. (Hopefully within India).
Regards,
Ravi