|Ören Kablo is using the ROSENDAHL physical foaming line for its coaxial cables production. This line is producing the insulation in Skin / Foam / Skin construction.
A low density polyethylene is applied over the conductor as the
first layer of insulation. This layer has a thickness of approximately
his first layer is bonded over the conductor with the
help of the pre heating unit. The bonded layer avoids any possible
water leakage into the cable. The water leakage in to the cable
would cause humidity between the insulation and the conductor.
As a result of this humidity, the inner conductor would get oxidized
in time. Oxidation on the inner conductor will cause the cable to
fail in transmitting the data eventually, and the cable would be
required to be replaced. The insulations are being bonded over
the conductor for all the coaxial cables that are being manufactured
by Ören Kablo The gas injected physically foamed polyethylene is the second
layer of the insulation. The physical foaming technology allows
us to achieve high foaming degrees on coaxial cables such as
70% foaming. The construction of the foaming is also homogenous
with physical foaming. As a result of homogenous foaming
construction, the impedance graph gets much more stable.
coaxial cables that are being manufactured by Ören Kablo have physical foaming insulations.
The third and last layer over the insulation is high density
polyethylene. The wall thickness of this layer is approximately
0.02 mm. The physically foamed coaxial insulations have very
high foaming ratios. As a result of high foaming ratio, the insulation
gets spongy. This third layer is applied over the second layer in
order to protect the sensitive and spongy insulation beneath it
from outer effects. This layer also helps to avoid the insulation
to get oval during the production.
The spongy foamed insulation will be lack of protection, if the
third layer is not applied over the insulation.
It would cause the
insulation get oval, therefore; the impedance of the cable would
be unstable. The attenuations would be higher on the cable.
Any kind of abuse during the installation of the cable would cause
peak points on the signal graph of the cable. In order to avoid
instability of the impedance and the insulation get oval; the outer
skin layer must be applied over the insulation. The coaxial cables
that are being manufactured by Ören Kablo have the outer
In summary, In order to avoid all the negative effects over the
insulation, it is required to use a Skin / Foam / Skin construction
physical foaming line.