Page 45 - 2010-2022 hose manufactureing ability and guide

Woven Hose A hose made with this loom normally would be
provided with an inner liner which would be
The reinforcement for woven hose is a
seamless, tubular textile jacket woven on a drawn into the circular woven member
loom. This produces a strong, lightweight hose simultaneously with the weaving procedure.
that is flexible for flat storage. Because the The primary use of a hose from such a loom is
for suction applications. This construction
longitudinal warp yarns are parallel to the axis,
woven hose tends to kink more easily than other would normally have two alternate members of
hose constructions. Although sometimes used round wire or plastic rods having physical
characteristics which would provide substantial
with a rubber cover for industrial applications,
woven discharge hose finds its greatest use as a crush resistance in the hose structure. The other
fire hose where lightweight and high strength two would be textile yarn. An illustration of the
Chernack loom construction is shown in Figure
are of great importance.
2-17.
Fire hose consists of a tube and seamless
circular woven jacket or jackets, either separate
or interwoven. Figure 2-15 shows a typical
single and double jacket hose. One of the types
of looms used for the weaving of the fire hose
jackets is shown in Figure 2-16. The tube may
consist of a rubber or plastic compound.

The tube may be extruded, wrapped, or built
up by depositing multiple layers of rubber latex.
If compounded rubber has been used as a tube,
it may be semi-cured and then backed with a
supplemental layer of rubber. This step is
eliminated in the case of plastic tubes. The tube
is then drawn into the jacket or jackets and,
when made with rubber compounds, it is cured
by internal steam pressure, with the jackets Figure 2-15
being the pressure container.
Fire hose is normally made without an outer
rubber cover or protection to the outer jacket.
For certain applications, especially in the
chemical industry and at refineries where
damage to the jacket would occur from
aggressive liquids, it is normal to use either a
rubber covered hose or a hose where the outer
jacket has been impregnated with a rubber type
protective coating.
A great deal of rubber covered fire hose is
made by weaving the jackets on a loom. Then
the tube and cover are applied simultaneously
by pulling the jacket through a special cross
head extruder. This extruder forces the
compound through the weave forming a one-
piece tube and cover.
A common loom variety, a Chernack loom,
is a four-shuttle circular loom in which every
alternate fill member may be of different Figure 2-16
material.

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