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Technical analysis of the shielding
fabrics Elettrosmog Tex and Swiss Shield
From a comparative
analysis between the shielding fabrics Elettrosmog Tex
produced by Mr. de Cavi, and Swiss Shield produced by Spoerry
of Flums ( Switzerland) I would like to point out various
considerations that need to be taken into account. The first
consideration is technical and concerns the construction , the
performance values and price .
performance values of Elettrosmog Tex:
You can notice how the
performance values increase during the raising of frequency.
The performance values of
You can notice how the
performance values decrease during the raising of frequency.
A microscope image of Elettrosmog
Tex multifiber fabrics
The insertion of manifolds
inoxidable filaments in Elettrosmog Tex fabrics ensures the long life
and durability of the product.
A microscope image of
Swiss Shield monofiber fabrics ( only one filament)
The use of only one
oxidable filament would decrease the shielding properties
drastically because it could be broken or damaged during use or while
Swiss Shield has got an
inferior electromagnetic protection output compared to Elettrosmog
Tex, especially with high frequencies.
Swiss Shield is
made of only one metalic oxidable filament, which can damage itself
easily: that is why it is a low quality product and obviously
inferior to Elettrosmog Tex.
misleading information of the producer, Swiss Shield , as it is
electroconductive, must be grounded.
Swiss Shield costs
more, it has got inferior shielding properties, it has a short life, it
only has a 2 years guarantee.
Elettrosmog Tex costs 45
euro + iva/ mq
filling and warp 0.55 mm multifiber ( many filaments) inoxidable
guarantee: 15 years
Swiss Shield monofiber
(one filament) oxidable , filling and warp 1.4 mm
Cost : 42,44 euro + iva /mq
Swiss Shield natural
monofiber (one filament) oxidable . filling and warp 0.7mm.
Cost: 48,69 euro + iva /mq
guarantee : 2 years
The patent rights
Mr. de Cavi is the
owner of the two patents (
Switzerland), in virtue of this he has
warned Spoerry , which produces Swiss Shield (patent 1997), not to
sell and distribute their fabrics in Italy and Switzerland.
Despite this warning,
Naturalia bau of Merano (Bz) continues to distribute these fabrics .
Here is the
legal letter which warns Spoerry. The
legal office reserves the legal acts.
Schneider Feldman is
the agency that deals with Spoerrys’ patents.
The Spoerry patent
described by its inventor Mr. Fritz Blum:
Application number :
Publication date :
Filing date: 06.30.1997
As you can see it is
obvious that it talks about a conductive yarn. It is the “Faraday
cage” which must be absolutely grounded, not only to guarantee its
shielding properties and to avoid the saturation but also to comply
with the international Legislation (force norm d.p.r. 547/55,
decree n. 37 of January 22nd 2008, norm CEI 64 8/4) .
The international norms‚ oblige the grounding of any metallic
component or electric conductor for safety reasons.
Extracted by the text
deposited by Mr.de Cavi, Elettrosmog Tex:
The fabrics according to
the present invention allow an exceptional protection against the
generation of electromagnetic energy, thanks to the fact that the
shielding takes place by reflection of the electromagnetic weaves and
not by the "Faraday effect", as it is the fabrics described in the
state of the art. Therefore, in its shielding function this system
does not need to be grounded.
How can Spoerry
declare that Swiss Shield doesn’t need to be grounded ?
Maybe Spoerry is in
complete ignorance of the laws of physics or declares untruthful
it a clear violation of Mr. de Cavis’ patents whether
Spoerry produces curtains
or declares that its fabrics don’t need to be grounded ?