LLDPE granule for injection and rotational molding

LLDPE granule for injection and rotational molding :LLDPE (Linear Low-Density Polyethylene) Granules are widely used in injection molding and rotational molding processes due to their unique properties, which include flexibility, impact resistance, and ease of processing. LLDPE granules are particularly beneficial in applications where durability, lightweight, and resistance to cracking are important.

Characteristics of LLDPE granule for injection and rotational molding

1. Flexibility and Toughness: LLDPE has high tensile strength, which provides toughness and flexibility, making it ideal for products that need to withstand stress or bending.
2. Impact Resistance: LLDPE resists impact, even at low temperatures, which is crucial for products that may encounter harsh environmental conditions or heavy use.
3. Good Processability: LLDPE granules are relatively easy to process, especially for high-speed production in injection and rotational molding, which contributes to faster production cycles and higher productivity.
4. Chemical and UV Resistance: This material is resistant to a variety of chemicals and UV radiation, making it suitable for outdoor applications where environmental resistance is important.
5. Low Melting Point: The lower melting point of LLDPE (compared to HDPE) makes it easier to mold and allows for energy savings during the molding process.

Applications in Injection Molding

For injection molding, LLDPE granules are used to create items such as:

• Household goods: Containers, lids, and storage bins
• Toys: Durable toys and children’s products
• Medical products: Lightweight and flexible medical devices
• Caps and closures: Durable and flexible caps for containers
• Flexible packaging: Pouches and packaging solutions where flexibility is needed

Applications in Rotational Molding

In rotational molding, LLDPE is especially useful for producing large, hollow products due to its low density and high impact resistance. Common applications include:

• Tanks: Water storage tanks, fuel tanks, and chemical containers
• Outdoor furniture: Weather-resistant chairs, tables, and playground equipment
• Road barriers: Impact-resistant and durable road safety barriers
• Recreational products: Canoes, kayaks, and sports equipment

Grades of LLDPE for Specific Applications

LLDPE granules are available in different grades tailored for specific applications:

• Injection Molding Grades: These grades focus on higher fluidity and faster setting times, allowing for efficient filling and cycle times.
• Rotational Molding Grades: These grades are designed to offer uniform melting and smooth finish, which is important for the durability and aesthetic quality of the final product.

Processing Conditions for LLDPE

1. Injection Molding Temperatures: Typically between 180°C – 220°C depending on part thickness and desired cycle time.
2. Rotational Molding Temperatures: The process often requires oven temperatures around 260°C – 300°C, as LLDPE needs to be evenly heated to prevent air pockets or uneven thickness in large hollow structures.

Advantages of LLDPE Granules in Molding Processes

• Lower Cost: LLDPE is more cost-effective than other types of polyethylene (such as HDPE), especially for high-volume production.
• Ease of Customization: The granules can be blended with colorants, UV stabilizers, and other additives to meet specific aesthetic or functional requirements.
• Recyclability: LLDPE is fully recyclable, making it an eco-friendly choice for products with a shorter lifecycle.

Considerations When Using LLDPE in Molding

1. Cooling Time: LLDPE’s relatively low melting temperature helps reduce cooling time in injection molding, though rotational molding may require longer cooling to prevent warping.
2. Shrinkage: LLDPE has a higher shrinkage rate compared to HDPE, so mold design should account for this factor to maintain dimensional accuracy.

LLDPE granules are a versatile and economical choice for both injection and rotational molding applications due to their balance of strength, flexibility, and ease of processing.

typs of grade

118LJ:LLDPE Grade 118LJ is a specialized grade of Linear Low-Density Polyethylene (LLDPE) often used in rotational molding applications, particularly suited for products that need excellent impact resistance and durability.
118NJ:LLDPE Grade 118NJ is a Linear Low-Density Polyethylene (LLDPE) grade that is specifically formulated for applications that require good impact resistance, flexibility, and ease of processing, especially in rotational molding. This grade is commonly used in products where durability and a smooth surface finish are important.
118NM:LLDPE Grade 118NM is a type of Linear Low-Density Polyethylene (LLDPE) commonly used for rotational molding and injection molding applications. This grade is particularly favored for products requiring high impact resistance, good flexibility, and excellent environmental durability.
118WJ:LLDPE Grade 118WJ is a Linear Low-Density Polyethylene (LLDPE) grade designed for rotational molding applications, known for its excellent impact resistance, flexibility, and smooth processing characteristics. This grade is widely used in applications requiring durability and consistent performance, particularly in large molded products with complex shapes.
118WM:LLDPE Grade 118WM is a specialized Linear Low-Density Polyethylene (LLDPE) grade designed primarily for rotational molding applications. It is known for its high durability, impact resistance, and good environmental stress crack resistance (ESCR), making it suitable for a variety of demanding applications.
119NJ:LLDPE Grade 119NJ is a Linear Low-Density Polyethylene (LLDPE) grade primarily designed for rotational molding applications, although it may also be suitable for other processes depending on specific requirements. This grade is known for its excellent impact resistance, flexibility, and ease of processing, making it ideal for products that need durability and resistance to cracking and environmental stress.
120NT:LLDPE Grade 120NT is a type of Linear Low-Density Polyethylene (LLDPE) that is specifically formulated for rotational molding applications. Known for its high impact resistance, good flexibility, and environmental stress crack resistance (ESCR), 120NT is well-suited for products that require durability and resistance to harsh environmental conditions.
121WJ:LLDPE Grade 121WJ is a specific type of Linear Low-Density Polyethylene (LLDPE) that is typically used in rotational molding applications. This grade is recognized for its balance of impact resistance, flexibility, and processability, making it suitable for various durable and resilient products.
122WJ:LLDPE Grade 122WJ is a specific type of Linear Low-Density Polyethylene (LLDPE) designed primarily for rotational molding applications. This grade is characterized by its combination of impact resistance, flexibility, and processing efficiency, making it suitable for a variety of products that require durability and resilience.
128CNJ:LLDPE Grade 128CNJ is a specific grade of Linear Low-Density Polyethylene (LLDPE) that is tailored for use in various applications, particularly in rotational molding and injection molding processes. This grade is recognized for its excellent balance of mechanical properties, flexibility, and resistance to environmental stress, making it suitable for a wide range of products.
218BE:LLDPE Grade 218BE is a specific formulation of Linear Low-Density Polyethylene (LLDPE) that is designed for applications requiring a combination of excellent impact resistance, good flexibility, and processing efficiency. This grade is often utilized in various manufacturing processes, including injection molding and rotational molding, depending on its specific properties.
218NF:LLDPE Grade 218NF is a specific formulation of Linear Low-Density Polyethylene (LLDPE) designed for applications requiring high performance in terms of impact resistance, flexibility, and processing characteristics. This grade is commonly used in various molding processes, including injection molding and blow molding, due to its excellent mechanical properties.
218NJA:LLDPE Grade 218NJA is a specialized Linear Low-Density Polyethylene (LLDPE) grade formulated for rotational molding applications, though it can also be suitable for injection molding depending on specific requirements. Known for its excellent impact resistance, flexibility, and environmental durability, 218NJA is widely used in applications where product durability and high-quality finishes are essential.
218NT:LLDPE Grade 218NT is a Linear Low-Density Polyethylene (LLDPE) grade designed for rotational molding and injection molding applications. It is particularly valued for its high impact strength, good environmental stress crack resistance (ESCR), and ease of processing. This grade is ideal for applications that demand durability, flexibility, and resistance to environmental factors.
218WJA:LLDPE Grade 218WJA is a specialized Linear Low-Density Polyethylene (LLDPE) grade often used for rotational molding applications. It is engineered to provide high impact resistance, excellent flexibility, and environmental stress crack resistance (ESCR), making it suitable for large molded products that need durability and consistent performance under stress.

recycled LLDPE granule for injection and rotational molding

Recycled LLDPE Granules are cost-effective and eco-friendly alternatives to virgin LLDPE (Linear Low-Density Polyethylene) granules. These recycled granules are suitable for injection molding and rotational molding applications, offering a balance between performance, sustainability, and affordability. Recycled LLDPE granules are derived from processed and purified plastic waste, making them a popular choice for manufacturers aiming to reduce environmental impact while maintaining product quality.

recycled granule for bottle caps

Recycled HDPE or PP Granules for Bottle Caps are commonly used in manufacturing due to their strength, durability, and recyclability. These granules are sourced from post-consumer or post-industrial plastic waste, then processed and refined to meet quality standards suitable for bottle cap production. Using recycled materials not only reduces environmental impact but also provides a cost-effective option for manufacturers.

for bottle caps

For manufacturing bottle caps, recycled HDPE (High-Density Polyethylene) and PP (Polypropylene) granules are widely used due to their rigidity, durability, and recyclability. Both materials are processed from post-consumer or industrial plastic waste and refined to provide consistent quality suitable for precise molding processes like injection molding.

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