Polyethylene granule is one of the widely used materials for the production of various plastic products in the industry. The granular form of this product has made it suitable for storage, and in addition, it is easy to transport and has good usability. On this page, you will read information about polyethylene granules (PE) and its types and applications.

What is polyethylene granule?

Polyethylene is one of the most widely used polymers in the world, which belongs to the polyolefin family and belongs to the thermoplastic category. This material is one of the thermoplastic polymers; In this way, when it reaches the melting point, it turns into a liquid state and when it reaches the freezing point, it turns into a solid state. Polyethylene contains a very simple structure, so that it is simpler than all commercial polymers. A polyethylene molecule is a long chain of carbon atoms with two hydrogen atoms attached to each carbon atom.

Granular polyethylene (PE) is a special form of polyethylene. In fact, granule is not a specific grade or combination of polyethylene, but refers to its pellet form, and the molecular type of granule can be different. Polyethylene granules are widely used in the production of bags and containers, plastic spoons, milk bottles, etc.

Types of polyethylene granules

In this section, we will examine different types of granules.

Light polyethylene granules (LDPE)

This polyethylene has a branched chain. Therefore, LDPE chains cannot connect well with each other and have weak intermolecular force and less tensile strength. This polymer has high flexibility and the possibility of decomposition by microorganisms. In terms of low and low molecular compression, it has a low density, which increases its flexibility. This property has caused more than fifty percent of the production of this product to be used in the production of films and sheets for use in transparent talc coatings, packaging linings, covers and suitcases. This type of polymer is also used to make containers such as pressurized bottles.

Linear light polyethylene granules (LLDPE)

The density of this type of polyethylene is less than light polyethylene. This type of polymer shows better strength and elasticity against tearing and puncture resistance.

Heavy polyethylene (HDPE) granules

The most common and widely used, and perhaps the first type of plastic that appeared, was heavy duty polyethylene (HDPE). The molecular chain in this type of polymer is compact, which increases its density. Although this type of polymer has less impact resistance than light polyethylene, its resistance to chemicals is good, such as its resistance to environmental breaking stresses.

Therefore, this type of polymer is used in a variety of commercial products such as fuel storage containers, outdoor chairs, toys, wardrobes, high pressure water pipes, sewage pipes and ducts. Among the famous types of heavy polyethylene granule, we can mention heavy injection granule and air heavy granule.

polyethylene terephthalate

Polyethylene terephthalate is a polymer that is used in most countries to produce polyester fibers (70 percent), bottle resin (22 percent), film (6 percent) and engineering polyester resins (2 percent), but in Iran, from this Polymer is mostly used to make all kinds of drinking bottles. Due to the high resistance of these bottles against breakage, temperature and gas penetration, low weight and cheap price compared to other packaging materials such as glass and metal, the production of plastic bottles from this resin has been widely used.

Application of polyethylene granules

Polyethylene granules are widely used in different parts of the plastic industry. All kinds of plastic containers and items that we see around us are produced with this widely used material. Some of the most important uses of this product are:

• Application in the product packaging industry
• Application in the automotive industry
• Application in home appliance industry
• Application in electricity and telecommunication industries
• Application in water and sewage, oil and chemical industries
• Application in medical and pharmaceutical industries
• Application in insulation and coating industry

Advantages and disadvantages of polyethylene granules

Polyethylene granules have certain advantages and disadvantages. Below are some of these advantages and disadvantages:

benefits

• Ability to mold and produce plastic parts: Polyethylene granules can be easily used in hot and cold casting processes to produce various plastic parts. This capability increases flexibility and multitasking in designing and manufacturing parts.
• Resistance to impact and breakage: Granular polyethylene has high resistance to impact and breakage. This feature makes the parts made of polyethylene granules more resistant to shocks and bearing external pressures.
• Chemical resistance: Polyethylene granules have good resistance to oxidation, contact with chemicals and solvents. This property allows it to be used as a suitable material in some industries such as chemical and petrochemical industries.

Disadvantages

• Heat sensitivity: polyethylene granules are sensitive to high temperatures. If its temperature increases too much, it may be deformed and disintegrated.
• Gas permeability: Granular polyethylene is permeable to gases and vapors. This feature may be undesirable in some applications such as food packaging.

Production and processing of polyethylene granules

The production and processing of polyethylene granules is a complex and fraudulent process that includes several main steps. Initially, the polyethylene polymer comes in the form of large blocks. These blocks can be produced through the polymerization process, which takes place using catalysts and special conditions. Then the polymer blocks are fragmented into smaller sizes to enter the processing process as polymer raw materials.

In the next step, polymer raw materials are transferred into the extruder machine. Extruder is a screw device that softens and heats materials uniformly and at the same time with proper temperature and pressure. In this process, polymer raw materials pass through small slits in the screw mold and are thinned to thick with controlled pressure and heat and formed into polyethylene granules.

In the final step, the polyethylene granules are sent to their final destination, such as plastic parts manufacturing plants. In these stages, the granules may undergo other processes such as coloring, compounding with additives and reinforcements. Then, using molding or casting processes, plastic parts are produced using polyethylene granules.

By using these production and processing processes, polyethylene granules are used as an important raw material in various industries. These processes serve as the basis for the production of diverse plastic products that can be used in many sectors and applications.

The price of polyethylene granules

The price of polyethylene granules is affected by several factors. One of the main factors is the price of crude oil. Because polyethylene, which is produced from crude oil, is directly dependent on the price of oil. If the price of crude oil increases, the price of polyethylene granules also usually increases.

Other factors that affect the price of polyethylene granules are: market demand, international supply and demand, production costs, transportation costs, type and quality of polyethylene granules, and local and international market conditions.

In addition, polyethylene granule production technologies can also have a direct impact on the price. For example, the use of advanced technologies and optimization of production processes can reduce the cost of production and thus reduce the price of polyethylene granules.

Buy polyethylene granules

Considering the wide range of polyethylene granule grades, it can be difficult to choose a suitable grade for the production of plastic products, and in some cases, it leads to confusion for producers. According to the purpose, type of product and its applications, different grades of this granule can be used. If you have problems in choosing the PE granule you want, you can contact Shams Javaid experts to guide you in choosing the right option. You can also click on the button below to buy granules and find out the weekly price of granules.

Granule price (weekly update)

Please note that the prices on the desired page are updated weekly and due to the variable prices, if you want to know the latest prices, call 02179615000.