Page 350 - 3rd issue

Telephone Wires & Cables

Manufacturing Flow Chart

Input Material Process Output

*Copper rod size Drawing M/CS *Cu. Wire 3 mm
Rod break down

*Insulation Material solid Drawing *Drawn Annealed copper wires
polyethylene foam skin Annealing, Insulating size 0.4 up to 0.9 mm and the
polythyethylene conductor is insulated

Pair or star quad
Twisting

*Identification Bilding tape Pair or star quad *5 quads. 10 pairs. no.
Twisting of pairs up to 25 pairs

Intermediate
Inspetion

*Identification Bilding tape Laying up of *No of sub-unit laid up to
sub-units and units form units and No. of
*Filling compound (Petroleum Jelley) units to form cable core
*Binding tape. Stranding
*ALU with PE tape *Cable core are filled with jelly,
*Black polyethelene sheath Filling *Wrapping tape is applied and
Lap serving *Lap serving tape is
NB. If requierd cable Sheathing longitudinally applied
will be aroured or *The cable are sheathed with
with double sheath Final polyethylene and marking
Inspection
Shapping
To Customer