EoW November 2009

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EuroWire – November 2009 30
technology news
A new concept in wire mesh and screen
technology is said to overcome the
limitations of traditional mesh products
based on a square or rectangle.
New 3WF® (waved welded wire fabric)
technology, developed from a physics
theory by Ghattas Y Koussaifi and based
on the research of two scientists, Gaspar
Coriolis and Denys Fisher, offers a
solution that the developer believes will
“move the industry forward. “
The attractive mesh designs produced
using 3WF can be used as fences,
screens, partitions and decorative items.
The production process is based on an
arithmetic equation that facilitates the
design of an unlimited number of mesh
patterns, produced from one continuous
wire formed to shape and welded at
intersection points, without cutting the
wire during the production process.
3WF panels are ornamental but also
rigid, providing security at a reasonable
price. 3WF patterns or styles range from
hand drawn designs to highly complex
computer aided designs. The different
patterns are grouped into families to suit
any taste, purpose or customer need.
Using the 3WF concept each panel design
can be made up of several segments,
and for each segment there is an almost
unlimited number of alternatives
available. For example, a pattern divided
into five segments, with 20 designs for
each segment offers around 3 million
mesh design alternatives. Every segment
can have designs varying between
curves (convex and concave), angles
(obtuse, acute, and right) and straight
lines (vertical and diagonal). Mesh can
be produced to different specifications
in terms of wire diameter, height length,
mesh size and wire type (galvanized,
black or stainless steel).
3WF’s patent covers concept, technology,
machine and product, which gives solid
protection and indicates the significance
of this development. The patterns are
registered industrial designs.
The 3WF concept, offering ornamental
design and security at a relatively afford-
able price, can solve the conflict between
cost and aesthetics when specifying
security fencing.
The developer of 3WF is keen to find
worldwide licensees for this technology.
3WFWavedWeldedWire Fabric –
Lebanon
Fax: +961 9 621444
Email:
Website :
Welded wire fabric said to offer almost unlimited design choices
Typical example of the 3WF technique ▲ ▲
SKET Verseilmaschinenbau GmbH offers
a broad range of cage-type stranding
machines for producing both cable
and steel wire ropes with and without
back twist. The company specialises in
cage stranders for the production of
submarine power cables, as well as for
long and heavy steel ropes, and has
supplied several large-sized stranders of
this type.
At the end of 2008, the company supplied
what is thought to be the world’s largest
cage-type stranding machine for the
production of power cables. The MKVD
machine is suitable for stranding cores
with a 1200mm² cross-sectional area
into cables with a maximum diameter of
240mm and can be operated either with
or without back twist. The full bobbins
in the stranding cages weigh 20 or
50 tonnes, some of them having flange
diameters of more than 4,000mm.
Early in 2009, SKET supplied another two
planetary stranders for armouring cables
with steel wire. One of these MKRD type
machines with two cages can be operated
in both the single (72 bobbins) and
tandem (138 bobbins) mode, whereas
the other consists of an 88-bobbin cage,
each bobbin having a flange diameter of
800mm, for stranding steel wires of up
to 10mm diameter. Maximum finished
diameter of the cables armoured on this
machine exceeds 250mm.
The line, including the stranding cage
and all associated assemblies delivered
by SKET, has an overall length of more
than 90m and weighs 250 tonnes.
SKET Verseilmaschinenbau GmbH –
Germany
Fax: +49 391 40558 37
Email: info@ sketvmb.de
Website:
Extra large planetary stranders
The MKVD cage-type stranding machine ▲ ▲
for power cables
Fluoropolymer
compounds
Colorant Chromatics produces a
full range of colour concentrates,
compounds, pigment dispersions and
inks for processors of fluoropolymers
and high performance plastics.
Colorant Chromatics’ extensive melt-
processable product line includes
colour concentrates and compounds for
polymers including FEP, ETFE, PFA, PVdF,
ECTFE, MFA, THV, PEEK, and PES. Colour
concentrates are offered in various
pigment strengths and resin viscosities
to assure optimal performance in the
end use manufacturing process.
In addition to the Colorant Chromatics
standard line of colours and compounds,
the company offers special services
including colour matching, pre-colouring,
and custom compounding.
The company also supplies a full
range of pigment dispersions for PTFE
extrusion, as well as printing and
striping inks for FEP, ETFE, PFA, PVdF,
PTFE, PEEK and polyimide.
Colorant Chromatics AG –
Switzerland
Fax: +41 41 741 0102
Email:
Website: