Plastic PPR PE Pipe Making Line 3 Layer PLC Remote Control
High Quality Plastic PPR/PE Pipe Making Line
Co-Extrusion Process Technology
In standard extrusion, solid plastic pellets are gravity fed into a
forming mechanism where jacketed compression screws melt and feed
materials into a die. Co-extrusion involves multi-layer extrusion
forming layered or encapsulated parts, with up to five or more
materials used in a single cycle. Each extruder delivers precise
amounts of molten plastic required for the operation.
Unlike ordinary plastic mixing, each individual plastic retains its
original properties while being combined into a compound-material
part. When mixed prior to extrusion, material characteristics may
be altered, resulting in a homogeneous product.
Not all plastics are suitable for co-extrusion. Some polymers won't
adhere to others, though introducing a conductive middle layer can
often solve adhesion problems. Plastics with drastically different
melting temperatures are unsuitable due to potential degradation in
lower-melting materials. PVC and acetals should never be coextruded
together because of potentially violent reactions when joined.
Complete Extrusion Line Components
- Single screw extruder
- Co-extruder for manufacturing marking line on pipe or multilayer
pipes
- Die head
- Vacuum tank (single or double vacuum chamber design based on
diameter)
- Cooling tank (one, two, or three tanks based on diameter
requirements)
- Haul-offs (double, three, four, six, eight, ten, or twelve s based
on diameter)
- Cutter (no-scraps cutter or planetary cutter design based on
diameter)
- Coiler/Tipping chute
Key Features & Advantages
PLC control system for high automation
Specialized screw design for optimal plasticizing effect
Vacuum calibration with constant temperature control to eliminate
pipe stress
Co-extrusion head for adding color lines
High extrusion capacity with low, equal melt temperature
Wide processing range for various raw materials
