Granules refer to small, hard, and specific-sized particles. In the field of polymer and chemical industries, the use of granules specifically refers to granular polyvinyl chloride (PVC) particles. PVC is a processed thermoplastic polymer. PVC resin (in powder form in polymer industries) is converted into granules for use in manufacturing processes due to its versatile properties and the ability to modify its characteristics for various industries.
PVC granules are created through a process called polymerization, in which vinyl chloride monomers chemically bond together to form polymer chains. The obtained PVC resin is further processed to achieve the desired physical form, which can include granules, making it suitable for various applications.
Why is PVC granule used instead of PVC resin, and what are its advantages?
Ease of Handling: The granular form of PVC makes it much easier to use, transport, and store.
Melting and Processing: PVC granules have a specific melting range that makes them suitable for various production processes, such as injection molding and blow molding.
Customization: The size of PVC granules can be adjusted to meet the specific requirements of the final product, providing manufacturers with a high degree of flexibility in the production process.
Homogeneity of the Mixture: The granular nature of PVC allows plasticizers and other additives to be uniformly mixed in the manufacturing process.
Industries of Use
Apparel and Footwear: Granules are widely used in the apparel and footwear industries for shoe soles and uppers, boots, and waterproof jackets.
Automotive: Many interior components of automobiles are made from PVC granules, which can be tailored to different quality standards depending on the application and required properties.
Telecommunications: Cable and wire coatings are another common use for PVC granules in this industry, where the composition of PVC, plasticizers, and other additives can vary depending on the required characteristics and application location. Factors such as voltage and operating temperature are of great importance in this regard.
Pipes and Hoses: One of the major uses of this material in Iran and other countries is in the production of consumer, general, and industrial pipes. PVC, due to its basic properties and suitable customization capabilities, is highly practical for this purpose.
