HDPE Injection Molding: Properties, Specifications and Applications

HDPE is a resin commonly used in injection molded products for its extreme durability and high stress resistance. This material is also used as a processability material. It is an ideal material for multiple aspects of the shipping industry. It's used in injection molding applications for: toys, storage containers, sporting goods, appliances, milk crates, pipe thread protectors, construction products, case, hardware and much more.

Specifications of HDPE

Name High-Density Polyethylene

Chemical Formula (C2H4)n

Melting Point (°C) ~130°C

Tensile Strength ~4550 psi

Impact Strength ~3.0 ft-lb/in notched Izod

Hardness Level (Rockwell) R65 – R95

Flexural Modulus ~233000 psi

HDPE Injection Molding

High-density polyethylene is a material that provides excellent performance characteristics for various applications. Due to its various features, it is commonly used in Injection Molding. HDPE Injection Molding is commonly used for making various applications due to its properties, such as its excellent strength and warp resistance. This resin is also sustainable as it provides a high level of durability.

Design of Injection Molding HDPE

Some members of the family have better melt flow properties than others. For instance, high-density PEs such as HDPE can be molded into large, thin-walled parts without using LDPE.

Following are a few factors to consider when designing with Injection Molding HDPE:

Wall thickness is determined by the requirements of the product and the molding considerations. Most of the time, the requirements are the most important factors when it comes to determining the wall thickness.

It is difficult to determine the maximum and minimum wall thickness for PEs. In recent years, the use of thin-wall molding and micromolding has redefined the requirements for these materials.

Creating sharp corners on PE parts can improve melt flow and minimize molded-in stress. Rounded corners are more resistant to impact type forces and are designed to improve the longevity of these components.

Draft angles are important for minimizing ejection forces and for achieving a cooling part reduction during the molding cycle. They can be achieved with polished core and cavities, and with a high degree of slippery surfaces.

The properties of PE make it easy to create depressions or holes in a variety of materials.

Low injection pressures allow the molding of small holes without the core pins bending problems associated with more rigid plastic materials.

Although tolerances are difficult to determine, generally speaking, a 1-inch-long component with a .125" thickness can be held to +/-0.80 inch with LDPE and +/-0.0085 inch with HDPE.

TEAM MFG Plastic Injection Molding Company Defines Perfection

When it comes to making high-quality molded parts, such as components for industrial applications, TEAM MFG can help you get the job done right the first time. Our experts can handle all of your HDPE Injection Molding plastic part needs. At the Industries, we use high-quality HDPE for various parts, and we can create components that are durable and strong. Our experts can meet the needs of every industry.

Contact the HDPE plastic manufacturing company for a quote at HDPE injection molding now!