EPE Foam Pipe And Sheet Extrusion Line​

EPE foam pipe is a kind of new-type foam material and it is widely used in the jacket of air conditioner, pipeline, heat insulation, toy guardrail, recreation places etc. Due to its high foaming ratio, good elasticity and insulation. As a kind of new type foam filling and stem and ornament material.

 

Extruder

Material of screw barrel：38CrMoALAThe high quality alloy steel was treated by multiple annealing and ion nitriding;
Driving form：Variable frequency speed regulation;
Driving Power：30KW(Around);
Heating mode：Iron Sheet and cast aluminum heater;
Cooling mode：Circulating Water Cooling;

 

Screen changer and die head unit

Screen changer unit
Do not stop to change the network Heating power: 3 KW
Heating zone: 1 pc

 

Die head unit
Heating mode： CAST aluminum heating;Heating Zone：2 zone,Automatic constant temperature;
Cooling mode: Wind cooling ;
Net Change: Automatic non-stop hydraulic screen change

 

Haul-off and cutting unit

Length controlled: controlled by haul-off Material of the knife: carbon and alloy steel Driven type: motor drives gear box, controlled by inverter.
Motor power: 0.75kw*2 (speed regulation) Count control: meter controller can be preset alarming

To operate a PE foam net machine efficiently, you need a carefully selected combination of raw materials that work together to produce the lightweight, protective foam netting commonly used for fruit packaging. A PE foam net machine typically processes low-density polyethylene (LDPE) as its base polymer, combined with several essential additives that enable foaming, coloring, and stabilization. Understanding these raw materials is crucial for achieving consistent product quality and minimizing production downtime.

The primary raw material for any PE foam net machine is Low-Density Polyethylene (LDPE)​ resin, usually in pellet form. LDPE is chosen for its excellent flexibility, low melting point, and ability to expand uniformly when blended with a foaming agent. Most manufacturers use virgin LDPE pellets for premium-grade netting, but some PE foam net machine operators incorporate a controlled percentage of recycled LDPE to reduce costs, provided the recycled material maintains consistent melt flow properties.

The second critical component is the foaming agent, typically azodicarbonamide (ADC) or a similar chemical blowing agent. When heated inside the extruder barrel of the PE foam net machine, the foaming agent decomposes to release nitrogen and carbon dioxide gas, creating the cellular structure that gives the netting its cushioning properties. The dosage of foaming agent directly determines the net's density, softness, and expansion ratio-too little results in heavy, rigid netting, while too much can cause uncontrolled bubble growth and weak walls.

A nucleating agent​ is often added alongside the foaming agent to control cell size and distribution. Fine particles such as talc, calcium carbonate, or specialized nucleating masterbatch help create uniform, tiny bubbles within the foam structure. This ensures that the PE foam net machine produces netting with consistent thickness and compressive strength across the entire roll.

Color masterbatch​ is another common raw material. Since most fruit netting is brightly colored for visual appeal and brand identification, operators add pigment concentrates-often orange, green, yellow, or red-directly into the hopper of the PE foam net machine. The masterbatch must be compatible with LDPE and stable at extrusion temperatures to prevent color streaking or fading.

To protect the polymer from thermal degradation during processing, antioxidants and UV stabilizers​ are frequently incorporated. These additives extend the service life of the foam netting, especially when the final product will be exposed to sunlight during storage or transportation. Some formulations also include anti-static agents​ to reduce dust attraction on the finished nets.

Finally, a processing aid​ such as zinc stearate or calcium stearate may be used to improve lubrication inside the extruder screw and die head of the PE foam net machine. This reduces friction, prevents material buildup, and ensures smooth, continuous extrusion of the tubular foam net.

In summary, running a PE foam net machine requires more than just plastic pellets. The core recipe consists of LDPE resin, a chemical foaming agent, a nucleating agent, color masterbatch, stabilizers, and processing aids. Each ingredient plays a specific role in determining the net's appearance, feel, durability, and production efficiency. By carefully sourcing and proportioning these raw materials, operators can maximize the output quality and profitability of their PE foam net machine.