Among the different types of polyethylene used in household and molding applications, high crates and pails are typical applications for HDPE injection molding.

Processing and Thermal Stability

In order to guarantee an optimum balance between melt flowability during processing and toughness for the final application, polyethylene has to be stabilized adequately,  particularly at high recycling rates.

The recommended stabilizer solution depends on the type of catalyst and type of production process. Typically, chromium catalyst-based Phillips-type polyethylene (Cr-HDPE) requires higher levels of stabilizers than titanium-based Ziegler/Natta-type polyethylene (Ti-HDPE). Ciba offers Ciba® IRGANOX® B blends such as Ciba® IRGANOX® B 921 and Ciba® IRGANOX® B 215 for processing and thermal stability.

Light Stability

For injection molded articles in outdoor applications Ciba® TINUVIN® 783 in combination with Ciba® TINUVIN® 326 are recommended to prevent light-induced polymer degradation.

Ciba® IRGASTAT® permanent antistat and Ciba® IRGAGUARD® antimicrobials offer further value to the polyethylene in injection molding applications.

To incorporate additives efficiently, we offer Customer Specific Blends in various product forms For more information, please visit our website or contact us.