Nowadays, according to the progress of science and technology in the use of plastic materials in various industries, new and advanced devices are made to produce different types of plastic materials. But one of the common questions regarding these devices is what raw materials are used in them? Granule is used as the basic material in the machines that produce plastic products. This basic material has always had many advantages and mechanical and structural properties and has caused a huge change in many related industries, especially the packaging industry. . In the rest of this article, we will explain more about granules, types of granules and the use and benefits of each.
What is granule?
Contrary to the belief of many people, granule is not the name of a specific polymer, but this substance is a form of polymer that has a granular structure. This is while polymer materials are in powder form. Granules are always one of the most popular raw materials for making polymers or plastics. Unlike other powder raw materials that spread in the air and cause breathing problems when used in the production of plastic materials, granules do not cause any harm to They do not enter the respiratory system and do not pollute the surrounding environment. In addition to these cases, due to the special engineering and design of plastic production machines, it is better to use granular raw materials such as granules.
💠 Advantages of using granules 💠
A huge part of the produced waste is related to plastic materials. Accumulation of plastic waste in nature always causes many damages to the environment cycle. Fortunately, with the discovery and use of granules in the plastic production industry, these problems have been solved, because granules have biodegradable properties and can greatly reduce the costs of supplying raw materials. It has caused various companies to use this material as a raw material for the production of all their plastic products.
⏬ types of granules ⏬
🔽 Polyethylene granule 🔽
Polyethylene is obtained as a result of the polymerization of propylene gas in the presence of a catalyst system. This material is often used in the form of powder, pellets and fibers as a raw material for making other items. Polyethylene is one of the most widely used types of granules, and many times the recycled materials of this granule are re-extracted and produced with the help of a granulator. Polyethylene granule is a form of polyethylene, this material has a crystalline structure and a special chemical composition has it. As a result of changing the arrangement of polymer branches in heavy and light polyethylene grades, grades with medium and very high molecular weight are created.
Polyethylenes are divided into different grades due to the type of air or injection molding method used. Polyethylene granules have different types such as HDPE heavy polyethylene and LDPE light polyethylene.
🔽 Polypropylene granules 🔽
This type of material is often used in the form of plastic pellets and granules. Polypropylene granule shows a very high resistance against chemical solvents, dilute acids and bases and has a high melting point. This type of granule is one of the raw materials used in the production of various types of packaging films and nylons.
This material is known in the industry with the abbreviation PP and is widely used in various industries, including automobile manufacturing, various consumer goods, and furniture. and have. Among other uses of this popular granule, the following can be mentioned:
food packaging
making water pipes
producing drinking straws
making medical equipment
producing toys
Manufacture and production of household appliance parts
Production of packaging film
🔽 Polycarbonate granules 🔽
Polycarbonate granules or PC is an amorphous thermoplastic that has high transparency. Of course, this material is found in various colors. Today, this type of granule is used instead of glass in many products. Polycarbonate sheets are particularly resistant to heat and heat, that's why they are widely used in the construction and production industry of building materials.
In fact, polycarbonate granular sheets have properties such as transparency, light transmission and shadowing, as well as The colorless appearance can be coordinated with other building materials. In addition, this type of granule shows high impact resistance. These types of sheets have much lower costs than glass and also have more advantages, so jet is the best alternative for using glass in various industries. Among the applications of this special material in various industries, the following can be mentioned:
making car lights
making medical equipment
household appliances
🔽 Polyvinyl Chloride Granule (PVC) 🔽
One of the most widely used types of granules in the industry is called Polyvinyl Chloride Granule. This very strong and flexible polymer material is used in making all kinds of packaging films such as stretch and shrink packaging films. These types of granules are mainly made from recycled materials and therefore reduce costs.