HDPE Injection Molding Resin HD6070EA is a high-density polyethylene copolymer designed primarily for injection molding applications. It contains butene-1 (C4) as a comonomer and is enriched with a medium content of light stabilizers. This material is engineered for general-purpose use and provides a blend of desirable physical properties, including high impact strength, excellent UV stabilization, and warpage resistance.

Key Characteristics

1. Impact Strength:

   • HD6070EA exhibits good impact strength, meaning that it is resistant to breaking or cracking under stress or impact. This makes it suitable for applications where durability is crucial, such as crates, boxes, and seats, which are exposed to rough handling or physical stress.

2. Easy Processing:

   • The material has been designed for easy processing, which means that it flows well in injection molding processes. This allows manufacturers to produce parts more efficiently and with fewer defects, helping improve productivity.

3. Warpage Resistance:

   • HD6070EA is highly resistant to warpage (distortion or deformation) during or after the molding process. This is critical in ensuring that the final molded parts maintain their shape, dimensions, and functional integrity.

4. Rigidity:

   • With high rigidity, HD6070EA is ideal for applications requiring strength and stiffness, ensuring that molded products do not bend or flex easily under load, making them more stable and robust.

5. UV Stabilization:

   • The UV stabilization ensures that the material is resistant to the damaging effects of ultraviolet (UV) light exposure. This means that products made with this resin can maintain their appearance and performance even when used outdoors or in environments with high UV exposure.

6. Food Contact Approval:

   • The material is approved for food contact, which is an important regulatory aspect for products that will be used in environments where food safety standards must be met, such as packaging or food storage.

Typical Data of HD6070EA

Analysis of Typical Data

1. Melt Flow Index (MFI):

   • The Melt Flow Index (MFI) of 7 g/10min (as per ASTM D1238) is a moderate value. This indicates that the resin has a balanced viscosity, making it suitable for general-purpose molding. The value suggests it can be processed efficiently without requiring high temperatures or long cycle times, which is a benefit in injection molding processes.

2. Density:

   • The density of 0.960 g/cm³ (as per ASTM D1505) is typical for high-density polyethylene. This value suggests that the material is robust and solid, contributing to its rigidity and overall mechanical strength.

3. Tensile Strength:

   • The tensile strength at yield is 26 MPa (as per ASTM D638), which indicates that the material can withstand moderate amounts of stress before it begins to deform. This is particularly useful in structural applications such as crates or boxes, where resistance to deformation under load is essential.

4. Vicat Softening Point:

   • A Vicat softening point of 120°C (as per ASTM D1525) indicates the temperature at which the material begins to soften. This value ensures that HD6070EA can maintain its shape and structural integrity at moderate temperatures, making it suitable for everyday applications where it will not be exposed to high heat.

5. Melting Point:

   • The melting point of 132°C (as per ASTM D2117) confirms that HD6070EA can handle typical processing conditions during injection molding without risk of premature softening or melting, contributing to its stability during manufacturing.

6. Elongation at Break:

   • An elongation at break of 900% (as per ASTM D638) is quite high, which means that the material is very flexible and can stretch a great deal before breaking. This is beneficial for applications where the material may experience impacts or bending without fracturing.

7. Flexural Modulus:

   • The flexural modulus of 1400 MPa (ISO 178-197) suggests that the material has high stiffness and is resistant to bending under load, which is important in applications requiring rigidity, such as structural components in crates and boxes.

8. Charpy Impact:

   • A Charpy impact of 5 KJ/m² (ASTM D6110) means the material has good impact resistance, making it suitable for applications that may undergo sudden impacts or mechanical stress without breaking.

Applications

Given its properties, HD6070EA is well-suited for a variety of applications, particularly where durability, impact resistance, and food safety are required. Some of the key applications include:

1. Crates and Boxes: Due to its high rigidity and impact strength, HD6070EA is ideal for manufacturing crates and boxes used in packaging, storage, and transportation, particularly in the food industry where food contact approval is a must.

2. Seats: The material’s high rigidity and impact strength make it a good choice for seat components, particularly for outdoor or industrial seating where UV stability is important to prevent degradation over time.

3. General Purpose Injection Molding Items: Given its balanced set of properties, it is also used for a wide range of general-purpose injection molding products that require good mechanical properties and ease of processing.

Summary

HD6070EA is a versatile and reliable high-density polyethylene resin designed for general-purpose injection molding. It offers a balanced combination of impact resistance, rigidity, UV stabilization, and food contact approval, making it suitable for products like crates, boxes, and seats. With its excellent processing characteristics and solid mechanical properties, it ensures both efficient manufacturing and durable, long-lasting products.

 

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