Overcoming technological issues associated with color additives in rotational molding via SSSP

Philip J. Brunner, John M Torkelson

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Rotational molding is a low-shear processing method that utilizes polymeric powders and slowly rotates them at elevated temperatures to make large plastic items. These items usually contain additives, such as antioxidants, UV stabilizers, and colorants, that are incorporated into the powder prior to molding. To increase the overall lifetime of the final product, additives such as antioxidants, UV and thermal stabilizers, and other processing aids are mixed or compounded into the plastic prior to molding. Additionally, other additives, such as color pigments, are often added to the powders in order to give the final product an appealing appearance. Rotational molding is an established manufacturing process used to make large, usually hollowed plastic components via a low-shear melting technique. To overcome some of the dispersion issues, turbo-blending, a process in which additives are bonded to the surface of the plastic powder by rotating both together at high speeds and at elevated temperatures, has been employed.

Original languageEnglish (US)
Pages (from-to)28-34
Number of pages7
JournalPlastics Engineering
Volume68
Issue number9
StatePublished - Oct 1 2012

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Chemical Engineering(all)

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