Two wire coating lines with SOMOS material drying system

We offer a fully functional and complete machinery park designed for coating steel wire with plastics (PP, PE, PVC and others).

The set includes:
Two extrusion lines: LW20CN04 (year of manufacture 2020) and LW21CN01 (year of manufacture 2021)
Complete granulate drying and dosing system by SOMOS
Production tools (dies and punches)
Stock of raw materials and components
Finished product stock

The machines were used in professional production of wire for IIR medical masks (PN EN14683) and FFP2 filtering half masks.

Technology description
The extrusion line is used to coat steel wire with an insulating layer of polypropylene, polyethylene or other plastics.

The production process includes:
1. Feeding bare steel wire from the pay-off unit
2. Coating the wire in the extruder head
3. Stabilization and cooling in a water bath
4. Precise wheel-belt haul-off
5. Automatic winding of the finished product onto spools

Control is based on an Allen&Bradley programmable controller communicating with inverters via the Ethernet/IP network.
An integrated STO safety function is applied.
The lines are of Polish manufacture.

Extrusion line LW20CN04 (2020)
Line configuration:
Pay-off unit UZ20CN05 (2020) + UZ21CN02 (2022)
FI30 extruder
FI8 GL20CN02 head
Cooling bath
FI350 wheel-belt haul-off
NW20CN01 winder
Electrical cabinet

Technical parameters:
Power supply: 3x400V, 50Hz
Protection: 25A
Rated line speed: 60 m/min (max. 100 m/min)
Product diameter range: 0.4 - 0.5 mm
Nominal pulling force: approx. 150N
Pulley diameter: 350 mm
Spool diameter: 250 mm
Spool width: 150 mm
Axis height: 1000 mm

Extrusion line LW21CN01 (2021)
Line configuration:
Pay-off unit
FI45 extruder
FI8 GL20CN02 head
Cooling bath
FI350 wheel-belt haul-off
NW21VN03 winder
Electrical cabinet

Technical parameters:
Power supply: 3x400V, 50Hz
Protection: 25A
Rated line speed: 300 m/min
Product diameter range: 0.4 - 0.5 mm
Nominal pulling force: approx. 400N
Pulley diameter: 350 mm
Spool diameter: 400 mm
Spool width: 250 mm
Axis height: 1000 mm

Material drying line - SOMOS
The complete granulate preparation and feeding system includes:
Mobile granulate dryer Somos RDM-70/200
3 conveyors FG 204.1/21
Volumetric dosing unit Somos MiniMix MC18

The system provides:
Stable material quality
Precise additive dosing
Automated raw material feeding
Continuous operation in industrial mode

Production capabilities
The lines can be used to produce:
Medical wire for masks
Gardening wire (PVC)
Florist wire
Clipband / twistband (food industry)
Electrical wires and cables
LED, installation and speaker wires
Plastic elements up to 8 mm wide (small profiles, monofilaments, cords, tubes, pen refills, etc.)

After suitable retrofitting, the lines can be adapted to other industrial applications.

Materials and tools included
Annealed steel wire:
FI 0.4 mm - 4914 kg
FI 0.5 mm - 3550 kg
FI 0.73 mm - 208 kg

Granulate:
PP - 10,358 kg
Additional granulates - 199 kg
Coloring plastomers - 165 kg

Tools:
20 sets of dies and punches (0.4; 0.5; 2x0.6; 1.75; 0.73)

Other items:
960 pcs. of bulk boxes

Finished product stock
Polypropylene (PP) coated wire - intended for masks:
0.4 mm natural - 14,846 linear m
0.4 mm super white - 1,517,500 linear m
0.4 mm super white FI20 - 8,371,200 linear m
0.5 mm white - 1,406,210 linear m
0.5 x2 white FI20 - 144,000 linear m
0.6 x2 white - 452,400 linear m
0.4 mm white - 1,128,030 linear m

Summary
The offered machinery park is a complete, operational and ready-to-start production line, enabling immediate launch of coated wire production.

Two efficient production lines
Professional drying and dosing system
Complete tooling equipment
Stock of raw materials and finished products
Wide technological adaptation possibilities

It is an ideal solution for companies in the medical, electrical engineering, gardening and plastics processing industries.