Equipment for the production of stretch films: the choice of machines and technology

Stretch film is now used in many areas of life. Basically, this material is used as packaging. Equipment for the production of stretch film is simple, but it is not cheap. To begin with, we will deal with all the advantages of the presented product and its uses.

Where is stretch film used and what advantages does it have

Among the advantages of the presented material, the following can be distinguished:

• simple manufacturing process;
• low cost of raw materials;
• a small amount of necessary equipment;
• high demand for products;
• the possibility of use in various spheres of life;
• long storage period.

As for the use of this film, it is most often used as packaging material for beverages and food. The fact is that it can save food products for longer. And the product is completely safe, as it does not contain dyes or toxic substances.

What is the material made of?

Before you purchase equipment for the production of stretch film, you need to stock up on raw materials. So, the material is usually made from:

• polyethylene;
• PVC
• polystyrene;
• copolymers of ethylene vinyl acetate.

Each presented element has its own properties and as a result gives a type of material with different features and qualities.

Variety of products

Equipment for the production of stretch film is an integral part of the workshop. However, you should choose it depending on what kind of material you will produce. As for the varieties of the film, we can distinguish the following types:

• Kling film. She is very thin and stretchable. Most often this material is used for individual packaging of products.
• Polymer films. They have a large thickness and are intended for packaging non-food products. You can also use such a product to wrap a large number of items for transportation.

It should be noted that the machine for the production of stretch film is also selected depending on the type of extrusion:

• blown;
• flat slit.

Production Line Composition

If you decide to choose equipment, you can purchase all the machines separately. However, it is better if you use an automated line for the production of stretch film, which costs about $ 2,000. It consists of several machines:

• an extruder in which raw materials are cooked;
• film rewinding devices;
• cutting machine.

These devices are quite enough to organize a small workshop. Naturally, the equipment must be selected taking into account performance. That is, the more film you produce per day, the more money you can earn.

Naturally, the quality of the product should be high, otherwise your customers will stop working with you. If you do not have enough money, then you can purchase equipment by installments, a loan or buy used, but working machines.

Features of a flat slot extruder

The presented device is used in the work most often. To work with the device, you can use different raw materials and additives that make the film sticky.In addition, a flat-slot extruder for the production of stretch films makes it possible to produce 2 types of material:

• A product that is used for packaging equipment and other items. Such a material has the ability to stretch three times longer than its original size. Therefore, you can be sure that the products that were packaged in such a film will not crumble.
• Non-oriented polypropylene cast material.

Such a device includes an apparatus for cooling the final product, a product winder, a raw material dispenser, two co-extruders with a flat-slot head. The principle of operation of the device is quite simple. In the boiler, the raw material is heated to a certain temperature. At the same time, the necessary additional substances are added to the mixture. All this viscous mass is forced through the slot head. In this case, the film is cooled. It should be noted that the material in this case is very thin.

Product Manufacturing Technology

Now you can consider how, in fact, the presented product is made. So, the basis for the production is PVC. Various additional substances are added to this raw material that change the properties of the final product.

So, the material from which the film will be made is loaded into the extruder. There it turns into a homogeneous mass and mixes with additional components. The hot mass is then pushed toward a slit which is small in thickness. Due to the pressure that forms inside the machine, the porridge is pushed out. It is at this time that the film thickness is formed. It can be set using the remote control.

Further, the product is cooled and wound on bobbins of different sizes (depending on customer requirements). After that, the finished material goes to packaging, packaging and storage.

You can produce raw materials for work yourself or buy from suppliers. An extruder for the production of stretch film is the main machine, without which the work of your workshop is impossible. His choice should be given special attention. That's all. Good luck