You use the 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set to work with two raw materials at the same time. It makes a strong co-extruded film. This machine can use HDPE, LDPE, and LLDPE plastics.

Double-layer co-extrusion gives better barrier protection. It makes films stronger and more flexible. These films keep out moisture and oxygen. This helps products stay fresh.

• The 2SJ-G Series machine works with two plastics at the same time. It makes films that are strong and bend easily.

• Double-layer co-extrusion makes the film better. It helps block water and air from getting in.

• The rotary die head helps the film stay the same thickness. This makes the film stronger and work better.

• This machine can lower how much it costs to make film by 20% to 30%. It also uses much less energy.

• Double-layer films can be used in many ways. They are good for food packaging and for medical things.

2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set

The 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set helps you make plastic films that are strong and bend easily. It uses two kinds of raw materials at once. The machine melts and mixes them to form a film with two layers. You can pick HDPE, LDPE, or LLDPE for the main materials. These plastics help the film stay tough and block water.

Here is a simple table about the main parts and features:

This machine is made to work fast and last a long time. The double-layer co-extrusion lets you mix materials for better film quality.

Key Features

The 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set has a rotary die head. This part turns at a steady speed. It helps make films that are smooth and the same thickness everywhere. Older machines do not have this part. They often make films that are not even.

Here are some technical details:

Tip: The rotary die head is made from strong alloy steel. This helps it last longer and keeps it from rusting. The screw inside is special. It melts the plastic better and helps you make more film.

You can use this machine for many kinds of packaging. It works with different plastics, so you can make films for lots of things. The 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set always gives you strong, bendy, and even films.

Material Feeding and Melting

You start by feeding plastic pellets into the machine. You can use HDPE, LDPE, or LLDPE pellets. The 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set has two separate hoppers. Each hopper holds a different type of plastic. The machine uses strong screws to push the pellets forward. The screws heat up and melt the pellets. You get two streams of hot, melted plastic.

Tip: Always check the temperature settings before you start. Proper heat helps the plastic melt evenly.

Co-extrusion and Rotary Die Head

The melted plastics move into the co-extrusion section. Here, the machine combines the two streams. You get a double-layer flow. The rotary die head spins at a steady speed. This part is very important. It spreads the melted plastic evenly. You get a film with the same thickness everywhere. The rotary die head helps you avoid thin or thick spots in the film. This is especially useful when you make LDPE films. You get better quality and performance.

You control the speed and temperature with a digital panel. You can adjust these settings to get the film quality you want. The 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set lets you change the thickness and width of the film. You get precise control over the process.

Film Formation and Cooling

After the rotary die head shapes the film, the film rises up like a bubble. You use air to blow the film and stretch it. The film cools down as it moves upward. Cooling rollers help the film set its shape. You can adjust the air flow and roller speed. This helps you get the right thickness and smoothness.

• You guide the film through rollers.

• The film cools and hardens.

• You wind the finished film onto rolls.

Note: If you control the cooling and take-up speed well, you get films that are strong and flexible.

The 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set gives you a smooth workflow. You feed the pellets, melt them, co-extrude with the rotary die head, and cool the film. You get high-quality double-layer films every time.

Structural Differences

Single-layer and double-layer machines are not the same. A single-layer machine has one extruder and one die head. It melts one kind of plastic. The film has only one layer. The 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set uses two extruders. It also has a rotary die head. This means it melts two plastics at once. You get a film with two layers. The rotary die head spins and spreads the melted plastic. This helps make the film strong and even.

Tip: Double-layer machines let you use recycled plastic in one layer. You can use new plastic in the other layer. This helps save money and makes better film.

Performance and Applications

Single-layer machines are good for simple films. You can use them to make regular bags. These machines are easy to use and cost less. But you cannot mix plastics or add special features. Double-layer machines, like the 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set, give you more choices. You can make films that are stronger and bend more. These films block water and air better.

Here is a table that shows what each machine can do:

You can use double-layer machines to make:

• Garbage bags

• Shopping bags

• T-shirt bags

• Courier bag film

• Two-color film

You can control how thick and strong the film is. Double-layer machines help you make better packaging. You can pick the best plastic for each layer. This helps you make films for many different uses.

Advantages of Double-layer Co-extrusion

Double-layer co-extrusion gives you many good benefits. This process helps you make films that are stronger than single-layer films. Here are some main advantages:

• You can cut your production costs by 20% to 30%. This is better than older ways.

• You make your films safer and cleaner. You do not need dangerous chemicals.

• Your finished films have better quality and stay stable.

• You help the environment because this process does not make waste.

• You save space since one machine does the job of two. You need 30% less room.

• You use less electricity and save more than half on power bills.

• You can lower your budget with a 20% drop in costs.

You also get films that are stronger and block things better. The table below shows how double-layer co-extrusion is different from single-layer extrusion:

Tip: If you use the 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set, you can make films that are strong, safe, and save money.

Typical Uses

Double-layer co-extruded films are used in many industries. These films are good for packaging, farming, and electronics. The table below lists some common uses and their benefits:

Many markets use these films. Here are some examples:

You can see the 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set helps many markets. You get films that protect food, help medical safety, and keep electronics clean. This technology lets you meet different needs with one machine.

You can use the 2SJ-G Series Double-layer Co-extrusion Rotary Die head Film Blowing Machine Set to make films with two layers. These films are strong and bend easily. The machine lets you mix different plastics. Each layer can have its own special features. You can control how thick the film is. You also control how good the film looks. Manufacturers pick equipment that fits what they need. Co-extrusion technology helps you change things and work faster. You get better films and make good choices for your business.

What plastics can you use with this machine?

You can use HDPE, LDPE, and LLDPE. These plastics help you make films that are strong, flexible, and good for many uses.

How does the rotary die head help film quality?

The rotary die head spins as you make film. This movement spreads the melted plastic evenly. You get film with the same thickness everywhere.

Can you adjust the film thickness?

Yes! You control the thickness using the digital panel. Change the speed or temperature to make the film thicker or thinner.

What are the main uses for double-layer films?

• Food packaging

• Shopping bags

• Medical packaging

• Electronics protection

These films keep products safe and fresh.