TPI April 2009

34 / 68

32 Tube Products International April 2009
developmentsproducts &
Hot foil indent printers for marking
plastic tubes
Gnata Filippo Srl is a manufacturer and supplier of hot foil indent printers.
Gnata machines are designed for inline hot marking with coloured tape on
extruded PVC, PE, PP, ABS and PA pipes
and cables from 6 to 2,000mm in diameter.
Any writing can be transferred by means of
steel or brass stamps that are placed on
the marking wheel.
An electronically controlled resistance
heats the characters, while marking is
achieved through tape colour transfer. The
tape, stocked in ten colours, is placed
between the characters and the product
to be marked. A wide choice of printing
tape colours provides easy identification of
pipes according to their application.
Colour thermal transfer printing is a reliable
and durable marking method.
The slight fusion with the plastic material
offers stronger resistance to abrasion and
atmospheric agents.
Several models of printer and marking accessories are available according to
the minimum and maximum diameter of the pipe to be marked and according
to the extrusion speed.
Gnata Filippo Srl – Italy
•
The marking wheel of a Gnata S S
machine
pipe can be proven during the final
acceptance of the construction work.
For special applications, egeplast has
developed the SLA® barrier pipe with
special barrier layer. This pipe is made
from PE 100 RC with an additional
protection layer made from mineral-
reinforced polyolefine and with a KIWA-
accredited barrier layer made from
aluminium. A WIS approved version
(WIS 4-32-19) is also available.
The SLA barrier pipe is claimed to be
the world’s only plastic pipe system for
drinking water that is officially approved
for installation in contaminated soil (pipe
and joining techniques).
Its diffusion-resistant aluminium
barrier layer prevents the penetration
of pollutants. Accordingly, the SLA
pipe combines the advantages of a
plastic pipe (no corrosion, possibility of
trenchless installation) with those of a
metal pipe (barrier properties).
For leak monitoring, egeplast produces
the 3L Leak Control pipe. This pipe
is also made from PE 100 RC, with
an additional mineral-reinforced
polypropylene protection layer, and
electrical conductive layer made from
aluminiumforcontinuousleakmonitoring.
In addition to diffusion resistance, the
egeplast 3L Leak Control provides the
option of permanent leakage monitoring
and leak localisation to an accuracy
of 10cm. egeplast states that it is the
only PE-pipe system that fulfils the
requirements on permanent leakage
monitoring pursuant to ATV A 142 for
Class II Water Protection Zones.
egeplast Werner Strumann
GmbH & Co KG – Germany
egeplast, a manufacturer of PE high-
pressure pipes, has developed
HexelOne™ pipe, designed to have
around double the strength of existing
polyethylene pipes, making it suitable
for use in high-pressure applications
and as a reduced usage of material in
familiar applications. The new plastic
pipe is made from polyethylene only,
using the new HexelOne manufacturing
process.
egeplast has also introduced the SLM®
DCT pipe for trenchless installation with
additional protection and checking. This
pipe is made from PE 100 RC, with
an additional protection layer made
from mineral-reinforced polypropylene
and conductive aluminium strips for
acceptance of work.
Until now it has not been possible to
detect signs of damage to inserted
pressure pipes
in the case of
the trenchless
installation of
pipelines. Whether
directional drilling,
relining or bursting,
the largest part of
the pipeline eludes
checks by the
client’s or respon-
sible planner’s
quality management
team, and this is where the pipe is
exposed to the greatest stress.
Unacceptably high levels of damage to
the pressure bearing pipe wall place a
burden on safety and service life.
The egeplast SLM DCT (Detection
and Checking Technology) has been
developed by egeplast specifically for
this reason. The intactness of the new
High-strength polyethylene pipe
The new HexelOne pipe S S