Frequently asked questions

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Common questions

Granules usually refer to small, granular parts that are used for various applications such as packaging or manufacturing other materials.

Various materials are used to produce granules, including recycled plastics, polymers, etc. The type of material depends on the final application of the granule.

Granules are widely used in the plastic manufacturing industry. After melting and molding, these granules are turned into various products such as bottles, auto parts, and household appliances.

To distinguish high-quality granules, one should pay attention to factors such as the uniformity of grain size, color, and the absence of impurities. Technical tests and review of production standards can also help in quality assessment.

The price of granules can be affected by factors such as the type of raw material, production process, purchase volume, and market fluctuations. The quality and purity of raw materials can also affect the final price.

Depending on the type of granules, they may require special storage conditions. In general, granules should be stored in a dry and cool environment to avoid changes in their quality and properties.

Yes, many granules are recyclable. Plastic granules can usually be recycled into new granules, a process that helps reduce waste and conserve natural resources.

Low-quality granules may have non-uniform grains, unnatural colors, and various impurities. Quality tests and checking the technical specifications of the product can help identify these types of granules.

Yes, granules can be produced at various scales, from small quantities for trials and sampling to large quantities for mass production. The scale of production depends on the specific needs and customer orders.

Yes, granules can be obtained from various suppliers. Choosing the right supplier depends on your specific needs, product quality, and delivery terms.

Unfortunately, yes, pellets can harm the environment if not recycled properly. Non-biodegradable plastics may turn into microplastics and harm aquatic and terrestrial ecosystems. For this reason, recycling and proper management of plastic waste is very important.

The use of granules, especially in certain industries such as food or pharmaceuticals, may require special permits or compliance with health and quality standards. It is better to consult the relevant authorities and relevant standards.

Common questions about LDPE and HDPE

Granule LDPE (low density polyethylene) is a type of polyethylene that has a branched structure and a lower density than HDPE. This type of granule is used to produce films, plastic bags, and thin coatings.

HDPE granule (high density polyethylene) is a type of polyethylene with a linear structure and high density. Due to its strength and high resistance to chemicals and pressure, this type of granule is used to produce tubes, bottles, and other resistant products.

The main differences between LDPE and HDPE include:

  • Density: LDPE has a lower density than HDPE.
  • Structure: LDPE has a branched structure and HDPE has a linear and denser structure.
  • Properties: LDPE is more flexible and softer, while HDPE has higher resistance to pressure and chemicals.
  • LDPE: Used to produce plastic films, shopping bags, protective coatings, and flexible products.
  • HDPE: Used to manufacture milk bottles, pipes, tanks, and chemical and impact resistant products.

The production process of LDPE is usually done through high-pressure, low-temperature polymerization, while HDPE is produced through high-pressure, high-temperature polymerization. These differences affect the molecular structure and final properties of each type of polyethylene.

  • LDPE derivatives: such as packaging films, wire wraps, and hygiene products.
  • HDPE derivatives: including water and sewer pipes, beverage bottles, and construction products.

Yes, HDPE can usually be more expensive than LDPE due to its more complex manufacturing process and superior properties. The price of both types of polyethylene is affected by factors such as market fluctuations, production costs, and supply of raw materials.