What Is Extruded Plastic Net?

Extruded plastic nets are generally all kinds of plastic nets and net products made of HDPE or PP by extrusion process. During the process, materials melt and form tubular or flat structure with mesh openings.

It has higher tensile strength and tear resistance, and can be cut into any size without damaging its structure.

The extruded plastic net in the production process
Material

Extruded plastic net is generally made of PE, PP, PET and other thermoplastic polymers as raw materials added with antioxidants, UV stabilizers, plasticizers, flame retardant, heat stabilizer and other additives, and then is extruded out.

Polypropylene (PP)
It is one of the lightest material among general plastics, and has good mechanical properties, heat resistance, electrical insulation and chemical stability. In addition to strong oxidant, it will not react with most chemicals.
Low density polyethylene (LDPF)
It is also known as high pressure polyethylene and has excellent softness, ductility, transparency, cold resistance, electrical insulation, fabricability, stable chemical property and good resistant to acids, alkalis and organic solvents at 60 °C below.
High density polyethylene (HDPE)
It is also called low pressure polyethylene and has excellent high temperature and low temperature resistance and an operating temperature ranging from -70 °C to 100 °C. It has higher mechanical properties than low density polyethylene, good wear resistance, great chemical stability and is almost insoluble in any solvent at room temperature.
Polyamide 6 (PA6)
It has the highest tensile strength among thermoplastic plastic materials. In addition, it has good chemical properties, and has excellent resistant to high concentration hydrofluoric acid, phosphoric acid and acetic acid at higher temperature, but it does not resistant to alkali.

Thermoplastic polymer is a kind of plastic that softens and flows when the temperature rises, and then hardens and maintains its shape at high temperature after cooling. It can be repeatedly processed and molded under certain conditions. Polymer materials are viscoelastic, that is, when the load is unchanged, it will continue to stretch over time and has creep property.

Colorful extruded plastic nets are displayed.
Mesh Shape

There are some common mesh shapes. Besides, we also provide made-to-order services, for more information, please contact us directly.

Green hexagonal extruded plastic net

Hexagonal mesh shape

Green diamond extruded plastic net

Diamond mesh shape

Black square extruded plastic net

Square mesh shape

Black slotted extruded plastic net

Slotted mesh shape

Black geogird on a white background

3-way plastic net

Triangle mesh shape plastic net

4-way plastic net

Black 3D plastic net

M-shaped 3D plastic mat

Corrugated plastic net on a black background

Corrugated plastic net

Production Process
  1. Mixing. Mix raw materials, colorants and additives well
  2. Stirring. Screw moves materials forward to the extrusion head. During the process, raw materials, colorants and additives melt together.
  3. Molding. Materials enter the die from the extrusion head. Two dies rotate in opposite directions. Both dies have grooves through which melted plastic materials flows together to form a net.
  4. Cooling. The net comes in contact with the water, allowing it to solidify for further processing.
  5. Cutting. Flatten the plastic net and cut inside or outside the water.
  6. Drying & making rolls. During the rolling transportation, moisture is died out and the net is made in rolls for package or further treatment.
The picture shows the overall process of the extruded plastic net production
Post-processes
  • Stretching
  • Lamination
Stretching: Orientation & Bi-orientation

Polymeric molecular chains in a plastic net can be oriented by stretching it under a controlled temperature. This process offers higher tensile strength and weight reduction.

Orientation is the process by which the molecule chains formed by polymers facing the same direction are oriented in a line. To this end, the plastic net must be heated to an optimal temperature to stretch it lengthwise for mono-oriented products and crosswise as well for bi-oriented products. It significantly increases the resistance to traction and reduces the weight of the net by reducing the strand diameter, and is applied to manufacture products intended for specific applications.

The plastic net is stretched in the post-processes.
Lamination

For geotechnical products, extruded plastic net is often used as a support of other material.

The plastic net combines with one or two layers of geosynthetic materials (geotextiles or geomembranes) to form a geocomposite material through heat bonding.

The machine bonds the plastic net with other geotechnical products.